The Fresno River Viaduct under construction in 2017.[1]

The construction of the California High-Speed Rail system is an undertaking by the California High-Speed Rail Authority. The project is expected to span about 800 miles (1,300 km) and will be completed in two phases:

  • Phase 1 (totaling about 500 miles (800 km)) runs from the metropolitan area of the San Francisco Bay Area in northern California to the metropolitan area of Greater Los Angeles in southern California. It has been under construction in the San Joaquin Valley since 2015, and in "bookend" investments in the two metropolitan areas, and will take an as-yet unknown number of years to complete.
  • Phase 2 extends the system north to Sacramento, and south through the Inland Empire to San Diego.

Funding for all of the Phase 1 construction has not been secured yet, and Phase 2 is only in the preliminary planning stage.

Due to financial constraints, the Authority is implementing an Interim Initial Operating Segment (IOS) in the San Joaquin Valley (improving on existing Amtrak service). This will be a financially self-sustaining system. The next goal of the Authority is to extend the system west and north to San Francisco.

Current construction status

CASHR initial construction packages in the Interim Initial Operating Segment (Interim IOS).

A December 2023 status summary presentation, which contains extensive status information as well as information about improved management procedures, was prepared for the December 6, 2023 Board Meeting.[2]

In the Central Valley major construction projects are underway. Three separate construction packages total 119 miles of guideway and 93 structures. As of August 2023, 53 miles of guideway are complete, 43 structures are complete, and 32 are underway.[3]

  • Construction Package 1 (CP 1) comprises 32 miles (51 km) from Avenue 17 north of Madera to East American Avenue south of Fresno. It includes 12 grade separations, two viaducts, one tunnel, a major river crossing over the San Joaquin River, and the realignment of State Route 99. The contractor is the joint venture of Tutor-Perini/Zachry/Parsons.[4] The design-build contract was signed August 16, 2013.[3]: 12  CP 1 is anticipated to be substantially completed in 2026. As of end of October 2023: of 33 structures, by the end of 2023 10 will be underway, and only 15 will remain to be completed; of 32 miles of guideway, 2 miles are completed, 18 are underway, and 12 miles remain; and of 992 utility relocations, 564 have been completed, 250 are in progress, and 178 remain.
  • Construction Package 2-3 (CP 2-3) comprises 65 miles (105 km) from East American Avenue south of Fresno to 1 mile (1.6 km) north of the Tulare / Kern County border. It includes approximately 36 grade separations, viaducts, underpasses, and overpasses. The contractor is the joint venture of Dragados USA/Flatiron Construction.[5] The design-build contract was signed June 10, 2015.[3]: 21  CP 2-3 is anticipated to be substantially completed in 2026. As of end of October 2023: of 49 structures, by the end of 2023, 16 are complete, 23 will be underway, and only 10 will remain to be completed; of 65 miles of guideway, 33 miles are completed, 16 are underway, and 16 miles remain; and of 701 utility relocations, 493 have been completed, 66 are in progress, and 142 remain.
  • Construction Package 4 (CP 4) comprises 22 miles (35 km) adjoining the end of CP 2-3 to the intersection of Poplar / Madera Avenue northwest of Shafter. It includes at-grade embankments, retained-fill over-crossings, viaducts, aerial sections of the high-speed rail alignment, and the relocation of four miles of existing Burlington Northern Santa Fe (BNSF) tracks. The contractor is California Rail Builders, a joint venture of Ferrovial-Agroman West, LLC and Griffith Company.[6] The design-build contract was signed February 29, 2016.[3]: 30  CP4 is anticipated to be substantially completed by the end of 2023, and Track and Systems Installation begun on it in 2024. As of December 6, 2023 only 400 ft. of guideway remain to be completed.

Per the December 6, 2023 Board Memo: Construction Update: [7]

"Currently, 98% (2,258) of parcels have now been delivered to the design-builder, and the remaining parcels now stands at just over 2% (37).

"CP 1: The Revised Baseline Schedule has been accepted, and all major commercial issues previously reported have now been resolved. The primary risks have been identified and mitigated; however, risks remain that include delays with third-party approvals and design approval.

"CP 2-3: The primary risk areas are ROW acquisitions for utility relocations, delays with third-party design reviews and approvals, and obtaining an agreement from DFJV on the Revised Baseline Schedule. The Authority is proactively managing these risks and working collaboratively with the respective parties to advance a resolution.

"CP 4: All structures are now complete, including the delivery of all right-of-way parcels. There is only 400 feet of guideway that remains in progress due to outstanding land conveyance issues with Canal 9-22. Mitigation efforts include the evaluation of various options to identify a path forward and working closely with the North Kern Water Storage District (NKWSD) to reach a mutual agreement to advance the completion of work in this area."

Per the 2023 Project Status Report (released Mar. 1, 2023): [8]

  • CP1 Seven of eight major commercial issues noted in 2022 Business Plan have resolved, and only Church Avenue remains.
  • CP2-3 Three of four major commercial issues noted in 2022 Business Plan have been resolved, and the last one (Cross Creek) is in arbitration.
  • CP4 The one major commercial issue noted in the 2022 Business Plan has been resolved.
  • Finishing the 119-mile Construction Packages:
    • "The Authority now has over 96% of right-of-way in hand, has completed design of the 119-mile HSR civil infrastructure, and has completed 53% of utility relocations, with another 19% underway. The new estimates for this existing construction work represent updates from major final design elements being incorporated into construction contracts via change orders and updates due to global inflation and new construction schedules – due in part to COVID-19. To complete current civil contracts and related work, $2.2 billion is added to the 2022 Business Plan estimate."
  • New Contracts/Work to Complete Merced to Bakersfield:
    • "The Authority is also looking towards new procurements for civil construction to Merced and Bakersfield, the track and systems work, stations, and finally trainsets. We are already approaching the extensions differently by advancing design to the configuration-level, which is generally about 30 percent, and will procure right-of-way in advance of construction work."
  • Beginning planning work for IOS stations.
  • Extensions of the line from the above central section to Bakersfield and Merced, totaling 52 additional miles (84 km), are also progressing through advanced design work, right-of-way mapping, and identification of utility relocation work. Construction contracts have not yet been let.
    • Merced to Madera extension (34 miles). Segment begins at R Street in Downtown Merced and concludes at Avenue 19 in Madera.
    • Shafter to Bakersfield (19 miles). Segment begins at southern limit of CP 4 at Poplar Avenue in Shafter and ends at the Bakersfield station at F Street.
  • The Heavy Maintenance Facility (HMF) is proceeding through the planning and approval process.[9]
  • Cost updates for new contracts are:
Revised cost update for 119 mile segment civil construction per 2023 Project Update Report of $2.2 billion at P65 level. The total cost increase estimate until operational implementation at P65 is $3.7 billion.

"Bookend" investments are also underway to the north and south:

  • The Caltrain electrification "bookend" investment in the Bay Area (as well as grade separations, etc.) is proceeding, and is expected to be completed in late 2024.[10]
  • A "bookend" investment in the "Link US" project (Phase A) will shortly begin construction for Los Angeles Union Station. Phase B still needs to be funded. (There are also other "bookend" investments which are in progress.)[11]

Staged Project Delivery Process and the Project Delivery Decision Committee

On page 6 in the 2023 Project Update Report the Authority describes the Staged Project Delivery process which it is now using.

Associated with this process was an identified need to enhance and supplement the current overview process by establishing a Project Delivery Decision Committee. This is a director-level committee to provide oversight on scope, cost, and scheduling on each project; formally evaluate the most appropriate delivery methods for each project; and recommend the best course of action. It also reviews major project decisions.[12]

History of construction

Historical construction milestones

  • On December 2, 2010, the Authority Board of Directors voted to begin construction on the first section of the system (in the Central Valley).
  • On July 19, 2012, Governor Jerry Brown signed legislation approving construction of the high-speed system.[13][14]
  • On January 6, 2015, the City of Fresno hosted a groundbreaking ceremony to mark the commencement of sustained construction activities.[15]

History of projected construction timelines

The 2008 Business Plan projected that construction for the entire project would be completed by 2030.[16]

The 2012 Business Plan projected HSR service between Los Angeles and San Francisco would not be available until 2029.[17]

The 2016 Business Plan projected:

  • By 2018: The Initial Construction Segment (ICS) would be completed – 130 miles (210 km) – Merced to Bakersfield.
  • By 2022: Initial Operating Section (IOS) would be completed – 300 miles (480 km) – Merced to Burbank[18]
  • By 2027: Bay to Basin would be completed – 410 miles (660 km) – San Jose & Merced to Burbank
  • By 2029: Phase 1 Blended would be completed – 520 miles (840 km) – San Francisco to Los Angeles/Anaheim

The 2018 Business Plan projected HSR service between Los Angeles and San Francisco will not be available until 2033.[19]

The 2020 Business Plan projected HSR service between Silicon Valley and the Central Valley would be operational by late 2031, and that service between Los Angeles and San Francisco will be operational in 2033.[20]

The 2022 Business Plan does not have a projected timeline for completion of any of the segments other than the Interim IOS, recognizing that financial constraints make such an estimate unpredictable. Table 5.0 gives estimates of costs to finish the construction in year of expenditure dollars, but assumes that there would be no major delays.[21]

Initial construction approvals

On December 2, 2010, the Authority Board of Directors voted to begin construction on the first section of the system from Madera to Fresno, known as the Initial Construction Segment (ICS). Five "construction packages" are currently being planned for this section. With the Design-Build contractual system the Authority is using, the contractor will be responsible for the final construction design elements, following the guidelines and specifications of the contract. The intent of this (as explained by Dan Richard, chair of the Authority) is to minimize last minute design change orders arising during the construction process (which tend to add to expenses and slow construction).[22]

On December 20, 2010, due to the infusion of an additional $616 million in federal funds reallocated from states that canceled their high-speed rail plans, the initial segment of construction was extended to Bakersfield. Another $300 million was reallocated on May 9, 2011, extending the funded portion north to the future Chowchilla Wye (where trains can be turned).[23]

In September 2012, the Obama administration gave California's high-speed rail project the green light to streamline the permitting process for the 114-mile (183 km) section of the project which starts just north of Fresno in Madera County and runs south to Bakersfield.

On August 12, 2014, the federal Surface Transportation Board approved the HSR route from Fresno to Bakersfield. This was the final approval needed before beginning construction.[24]

Also, on December 15, 2014, the federal Surface Transportation Board determined (using well-understood preemption rules) that its approval of the HSR project in August "categorically preexempts" lawsuits filed under the California Environmental Quality Act (CEQA). This cleared the last obstacle before construction could begin.[25] However, this supposition is still being tested in the California courts in a similar case, Friends of Eel River v. North Coast Railroad Authority.[26]

On June 10, 2015, the Authority authorized a "Rail Delivery Partner" contract to be negotiated and signed by the CEO, valued at up to $700 million, for services through 2022. This is a successor to the support provided by the current Project Management Team contract. The RDP will provide engineering and management services to see the project from a planning mode into a construction mode. The RDP partnership under the lead of Parsons Brinckerhoff includes Network Rail Consulting (the international consulting arm of the UK rail authority) and LeighFisher (a global management firm with extensive experience in infrastructure and advisory services). The other partnership competing was under Bechtel Infrastructure Corporation.[27]

Awarding initial construction packages (San Joaquin Valley segments)

CP1. On August 20, 2013, the joint venture of Tutor Perini/Zachry/Parsons executed a design-build contract for the initial Madera to Fresno segment, about 29 miles (47 km) long. The contract is valued at approximately $985 million, plus an additional $53 million in provisional sums.[28] Construction was originally expected to begin in 2013, but was delayed by the slow pace of property acquisition.[29]

CP2-3. Dragados of Spain, with Flatiron West of San Marcos, and Jacobs Engineering of Oakland, won the bid for the second design-build construction package on December 11, 2014. Dragados/Flatiron/Jacobs submitted a bid of $1,365,335,890 to design and build the 65-mile (105 km) stretch from the south end of Fresno to near the Tulare-Kings county line and was deemed the "apparent best value" bidder by the Authority.[30] The winning bid came well below the range of $1.5 billion to $2 billion that was forecast by engineers and consultants working for the rail authority due to their innovative plan for cutting-and-filling instead of more expensive construction alternatives.[22] This plan however was deemed impossible due to soil and hydrological conditions on site and the plan was reverted back to its original designs.

CP4. Five construction teams competed for this 22-mile (35.4 km) segment.[31] This section was estimated to cost $400–500 million.[32] In January 2016 the apparent best value bid of $347.5 million (about $50 to $150 less than the estimated cost) was received from California Rail Builders (a consortium led by Ferrovial Agroman US Corp, an American subsidiary of Spain's Ferrovial S.A., also including Eurostudios, a Spanish engineering firm, and Othon Inc., a Houston-based engineering and environmental consulting company).[33] The California Rail Builders bid was $347.5 million. The contract awarded includes an additional $107 million for utility relocation costs for electric, gas and communication lines.[34] This project has had the least issues out of all of the current construction packages and is set to be completed by late 2023.

This package was shortened by about 8 miles (13 km) to a length of 22 miles (35 km) due to disputes with the cities of Bakersfield and Shafter. The construction segment now ends on the north side of Shafter due to the need to negotiate routes through Shafter and northern Bakersfield. The agreement between the cities and the Authority gave the parties until January 2016 to come up with the new alignment.[35] The Poplar Avenue to Bakersfield Locally Generated Alternative was signed by the Authority's CEO on October 31, 2019, and as of May 2022, geotechnical work has begun taking place.

Extending initial San Joaquin Valley construction

In August 2022, contracts for advanced design work, right-of-way mapping, and identification of utility relocation work in the Merced-Madera and the Shafter to Bakersfield (Locally Generated Alternative) segments were approved.[36] Construction will only begin once the design and land has been acquired. This reflects a change from the approach taken with the first four construction packages. Utility relocations will also begin as land is purchased to speed the construction process and avoid delays.

The Merced to Madera extension design contract ($41 million) was awarded to Stantec Consulting Services Inc., for approximately 33.9 mi. with 40 structures. The Shafter to Bakersfield (Locally Generated Alternative) extension design contract ($44.9 million) was awarded to HNTB for approximately 18.5 mi. with 31 structures. These design contracts are expected to last into 2024.[37]

Other San Joaquin Valley constructions

The design contract for the central valley stations was awarded on October 20, 2022.[38]

In addition, a large parcel will be needed for a rail yard, train sheds, machine shops, and other buildings for work on the tracks and trainsets in the Heavy Maintenance Facility (HMF). The counties of Fresno, Madera, Merced, Kings, and Kern all have expressed some interest in being selected for the site, since it is expected to provide up to 1500 good paying jobs. Per the May 2023 CEO Report to the Board, eleven potential sites have been identified in these four counties, and an architectural and engineering contractor will be selected (approximately by October 2023) for a two year contract to evaluate the properties, develop the necessary environmental documents, and obtain necessary approvals. In 2025 staff will provide the Board with their preferred alternative for their decision.

Statewide connectivity projects

According to the Authority: "Connectivity or ‘Bookend’ Projects refer to the billions of dollars in infrastructure investment throughout the state that are part of the California High-Speed Rail system. These funds will strengthen and improve existing rail networks, while also connecting them with California’s future high-speed rail system. Senate Bill (SB) 1029[39] passed by the California Legislature and signed by Governor Brown in July 2012, invests almost $2 billion from the Safe, Reliable, High-Speed Passenger Train Bond Act for the 21st Century (Proposition 1A) into transit, commuter, and intercity rail projects across the state. This funding leverages approximately $5 billion in additional funding for these projects."[40]

Major "bookend" investments are underway to the north and south:

  • The Caltrain electrification "bookend" investment in the Bay Area (as well as grade separations, etc.) is proceeding, and is expected to be completed in late 2024.[41]
  • A "bookend" investment in the "Link US" project (Phase A) will shortly begin construction for Los Angeles Union Station. Phase B still needs to be funded.[42]

Other connectivity projects partly funded by the Authority are:[43]

  • Bay Area Caltrain Advanced Signal System (CBOSS/Positive Train Control)
  • Bay Area Central Subway
  • Bay Area Maintenance Shop and Yard Improvements
  • Bay Area Millbrae Station Track Improvement and Car Purchase
  • Central Valley Sacramento Intermodal Facility High-Speed
  • Central Valley San Joaquin Corridor, Merced to Le Grand Segment 1
  • Central Valley Stockton Passenger Track Extension
  • Central Valley/Los Angeles Metrolink High-Speed Rail Readiness Program
  • Los Angeles Metrolink Positive Train Control
  • Los Angeles Positive Train Control, Los Angeles to Fullerton Triple Track
  • Los Angeles Positive Train Control, Moorpark to San Onofre
  • Los Angeles Regional Connector Transit Corridor
  • San Diego Blue Line Light Rail Improvements
  • San Diego North San Diego County Transit District, Positive Train Control
  • San Diego Positive Train Control, San Onofre to San Diego

Construction package details

CP 1 (Madera–Fresno)

Construction Package 1 (CP 1) is 32 miles (51 km) long, running from Avenue 19 north of Madera to East American Avenue south of Fresno.[4] The contract was awarded August 16, 2013, and a Notice to Proceed was given on October 15, 2013.[3]: 12  Groundbreaking was on January 6, 2015, in Fresno.

As of November 2023, out of 33 structures, 18 were complete, 10 were under construction, and 5 had not yet begun construction; out of 32 miles of guideway, 2 were complete, 18 were under construction, and 12 had not yet begun construction.[44]

# Project Status Milepost[45] Type Date of completion Notes Refs
1 Road 26 GS Not yet started Grade Separation (GS) Construct roadway overcrossing of existing BNSF track and the future High-Speed Rail alignment. Awaiting relocation of the adjacent Madera AMTRAK Station to its new location 8 miles south (to north of Avenue 12) by the San Joaquin Joint Powers Authority (SJJPA) expected to occur in 2024. [46]
2 Road 27 GS Completed 167.69 mi (269.87 km) GS Aug 20, 2021 636 ft (194 m) length over BNSF and High-Speed Rail [47]
3 Avenue 17 GS Under construction GS Construct roadway overcrossing of existing BNSF track and the future High-Speed Rail alignment. Will continue Avenue 17 across the existing railway where no connection previously existed.
4 Fresno River Viaduct Completed 169.99 mi (273.57 km) Viaduct 2018 1,600 ft (490 m) length [48]
5 Avenue 15+1⁄2 GS Completed GS Aug 26, 2022 468 ft (143 m) length over BNSF and High-Speed Rail [49]
6 Avenue 15 GS Completed 171.32 mi (275.71 km) GS Aug 26, 2020 278 ft (85 m) length over BNSF and High-Speed Rail [50]
7 Cottonwood Creek Viaduct Completed Viaduct Mar 2018 250 ft (76 m) length [51]
8 Avenue 12 GS Completed 174.81 mi (281.33 km) GS 2022 167 ft (51 m) length over High-Speed Rail and local access road; a separate structure was built further east to carry Avenue 12 over the existing BNSF track. [52]
9 Avenue 11 GS Completed 175.82 mi (282.95 km) GS Jul 31, 2019 100 ft (30 m) length over High-Speed Rail. [53]
10 Avenue 10 GS Completed 176.85 mi (284.61 km) GS Sep 8, 2020 116 ft (35 m) length over High-Speed Rail. [54]
11 Avenue 9 GS Completed 177.94 mi (286.37 km) GS Nov 15, 2023 Complete and open to traffic.
12 private agricultural underpass Completed Culvert Jul 31, 2019 Box Culvert undercrossing for private farm road.
13 Avenue 8 Overpass Completed 179.08 mi (288.20 km) Overpass Jul 31, 2019 110 ft (34 m) length over High-Speed Rail. [55]
14 Avenue 7 GS Completed 180.27 mi (290.12 km) GS Oct 2, 2020 196 ft (60 m) length over High-Speed Rail. [56]
15 San Joaquin River Viaduct & Pergola Completed 181.59 mi (292.24 km) Viaduct/Pergola May 2021 4,741 ft (1,445 m) total length. Arch Span over San Joaquin River is 200 ft (61 m) long; the Pergola section over the Union Pacific Railroad has a length of 1,626 ft (496 m). [57][58]
16 Herndon Avenue Underpass Not yet started Underpass
17 Veterans Boulevard Completed Street / GS Sep 19, 2022 Bridge crossing over Golden State Boulevard, High-Speed Rail and UPRR tracks. Small connector leading from future Golden State Boulevard Alignment is being used to allow traffic to use the new bridge structure while the rest of Golden State Boulevard is being worked on. [59]
18 Herndon Canal culvert Completed Culvert 2021 Culvert built, Golden State Boulevard rerouted over culvert.
19 Shaw Avenue GS Not yet started GS Bridge going over CHSRA, UPRR, and Golden State Boulevard. Right of way is partially cleared both for the Grade Separation and the realignment of Golden State Boulevard.
20 Golden State Boulevard Realignment Under construction Realignment Utility relocations and new sewer lines in preparation of the realignment. Right of way is mostly cleared. [60]
21 State Route 99 Realignment Completed Realignment Feb 15, 2018 Open to traffic [61]
22 McKinley Avenue GS Not yet started 188.99 mi (304.15 km) GS Utility relocations have been taking place periodically since March 2022. Right of way is mostly cleared on either end.
23 Motel Drive Realignment Not yet started Realignment Right of way largely cleared. Utility relocations periodically taking place.
24 Olive Avenue GS Not yet started GS Overpass over CHSRA, UPRR, and North Weber Avenue. Utilities are in the process of being relocated, most if not all of the required land has been cleared on either end.
25 Belmont Avenue GS Under construction GS Work has kicked off on the west side of the Union Pacific tracks and utility relocations continue on the east side. This grade separation will be a viaduct over Weber Avenue, the Union Pacific, the northern end of the High-Speed Rail's Fresno Trench, and a narrowed Golden State Boulevard (a/k/a Motel Drive).
26 Fresno Trench Under construction Trench Wall covering of the secant retaining walls complete; intrusion protection barrier walls next to Union Pacific tracks installed. A shoofly for the Westside Wye has been opened sometime during May 2022. Utility relocations have begun taking place again as of March 2022, with pilings being put in between North Thorne Avenue and the northern leg of the Westside Wye. [62]
27 State Route 180 Passageway Completed 190.83 mi (307.11 km) Tunnel Cut-and-cover-tunnel under SR 180 freeway has been finished. [62]
28 Stanislaus Street Bridge Not yet started Removal Existing structure to be removed due to inadequate vertical clearance for High-Speed Rail.
29 Tuolumne Street Bridge Completed Overpass Aug 4, 2017 Completed and open to traffic. [63]
30 Fresno Street Underpass Not yet started 191.85 mi (308.75 km) Underpass To be lengthened and renovated.
31 Tulare Street Underpass Under construction 192.03 mi (309.04 km) Underpass Post-tensioning of the G Street bridge has been completed, falsework has been removed, and the concrete to form the barrier and sidewalk has been placed. Crews are now putting the finishing touches, including paving and installing streetlights on the bridge for traffic. Work continues on the eastern approach to the underpass next to the Historic Fresno Depot. [64]
32 Ventura Street Underpass Under construction Underpass Crossing G St / Ventura St removed; temporary tracks for Union Pacific railway. Trench being dug and formwork appears to have been put up for the future G Street Bridge. [65]
33 State Route 41 Freeway Not yet started Modify Existing Viaducts Minor modifications to existing two structures (westbound and eastbound) which carry SR 41 over the High-Speed Rail alignment.
34 Church Avenue GS Under construction GS Roadway overpass; right of way cleared. Road closures for Utility relocations began in July 2022. Construction started on April 27, 2023, with several road closures. The BuildHSR website currently estimates this structure's completion date at the end of September 2025.
35 Cedar Viaduct Completed 195.66 mi (314.88 km) Viaduct May 10, 2023 3,700 ft (1,100 m) in length. [66]
36 Muscat Avenue Viaduct Completed 195.98 mi (315.40 km) Viaduct Mar 2018 North Central Canal culvert complete [67]
37 Property access Viaduct Completed Viaduct Mar 2018 Short section of viaduct to allow a property access road to run underneath. Completed at the same time as the Muscat Viaduct just to the north.
38 Central Avenue GS Under construction 196.48 mi (316.20 km) GS Canal culvert has been completed, right of way appears to be cleared. [68]
39 East American Avenue GS Completed 197.49 mi (317.83 km) GS Nov 16, 2021 353 ft (108 m) length over High-Speed Rail alignment and BNSF Railway. Allowance for additional track to access the HSR Heavy Maintenance Facility if it is chosen to be built just to the south. [69]

CP 2-3 (Fresno – Tulare/Kern)

Construction package 2-3 (CP 2-3) is 65 miles (105 km) long, running from East American Avenue south of Fresno to 1 mile (1.6 km) north of the Tulare / Kern County border. The contract was awarded June 10, 2015, and a Notice to Proceed was given on July 25, 2015.[3]: 21  The contractor is the joint venture of Dragados USA/Flatiron Construction. Groundbreaking took place in August 2018.

As of November 2023, out of 49 structures, 16 were complete, 23 were under construction, and 10 had not yet begun construction; out of 65 miles of guideway, 33 were complete, 16 were under construction, and 16 had not yet begun construction.[44]

# Project Status Milepost Type Date of completion Notes Refs
1 Lincoln Avenue GS Not yet started Grade  Separation (GS) Roadway overpass; right of way cleared
2 Adams Avenue GS Completed 199.49 mi (321.05 km) GS Dec 20, 2022 Complete and open to traffic. [70]
3 South Avenue GS Completed 200.49 mi (322.66 km) GS Feb 28, 2022 Complete and open to traffic. [71]
4 BNSF Track Realignment Under construction Realignment Shifting the existing BNSF tracks to the east side of the right of way between South Avenue and the Conejo Viaduct.
5 Manning Avenue GS Not yet started 201.49 mi (324.27 km) GS Roadway overpass; right of way cleared
6 Floral Avenue GS Under Construction 203.52 mi (327.53 km) GS Embankments are mostly built up on both sides.
7 Nebraska Avenue GS Not yet started 204.60 mi (329.27 km) GS Roadway overpass; right of way partially cleared
8 Mountain View Avenue GS Under construction 205.58 mi (330.85 km) GS Embankment work has begun. [72]
9 Conejo Viaduct & Pergola Under construction 207.70 mi (334.26 km) Viaduct/Pergola All girders have been placed. [73]
10 Peach Avenue Viaduct Under construction 208.29 mi (335.21 km) Viaduct Embankments and abutments complete on both sides, bridge deck appears to be in place.
11 Elkhorn Avenue Overcrossing Completed Overpass Jul 7, 2023 Complete and open to traffic.
12 Fowler Avenue Overcrossing Completed Overpass Dec 21, 2022 Complete and open to traffic. [74]
13 Davis Avenue Overcrossing Completed 212.08 mi (341.31 km) Overpass Oct 30, 2023 Complete and open to traffic. [75]
14 State Route 43 Tied Arch Bridge Under construction Viaduct Abutment walls were mostly complete, however, possible workmanship issues that had been reported by the Authority during a concrete pour were found to be severe. Abutment 2 required complete demolition, while Abutment 1 needed to be repaired. The demolition of Abutment 2 took place between March and June 2022, and the repair of Abutment 1 is ongoing as of June 14, 2022. The rebuilding of these Abutments is to be done at the contractor's expense. As a result, falsework spanning SR-43 has not been put up yet. [76][77]
15 Cole Slough Viaduct Under construction Viaduct Right of way leading up on both sides cleared, river basin is partially cleared.
16 Dutch John Cut Viaduct Not yet started Viaduct Right of way leading up on both sides cleared, river basin is partially cleared.
17 9th Avenue Viaduct Under construction 215.67 mi (347.09 km) Viaduct Bridge is mostly complete. Embankments are being built up on either end.
18 Cairo Avenue Viaduct Completed 216.09 mi (347.76 km) Viaduct Dec 20, 2022 Complete and open to traffic. [78]
19 Kings River Viaduct Under construction Viaduct Right of way leading up on both sides cleared, river basin cleared, test pilings finished in mid-2020. Three rows of bridge supports are in the process of being built up, with the northern bridge abutment having already been completed as of October 7, 2022. [79]
20 Dover Avenue Overcrossing Completed 217.82 mi (350.55 km) Overcrossing May 3, 2023 Dover Avenue Overcrossing opened on May 3, 2023, along with the Idaho Avenue Overcrossing. [80]
21 Excelsior Avenue Grade Separation Under construction 218.3 mi (351.3 km) GS Bridge deck under construction. [81]
22 Elder Avenue Grade Separation Not yet started GS Unknown if this structure will actually be constructed. If not, Elder Ave will be terminated on either side of the high speed rail alignment.
23 Flint Avenue Grade Separation Under construction 220.86 mi (355.44 km) GS The bridge deck is complete. [82]
24 Fargo Avenue Grade Separation Under construction 221.88 mi (357.08 km) GS Bridge columns under construction. [83]
25 Grangeville Boulevard Viaduct Not yet started Viaduct Viaduct to carry 2 tracks of High-Speed Rail over Grangeville Boulevard just north of the Hanford Viaduct.
26 Hanford Viaduct Under construction Viaduct Abutments under construction. All 286 bridge columns have been completed. Construction of the falsework for the superstructure is underway. As of November 2, 2023, the majority of the 978 total girders needed have been installed. [84]
27 Hanford Armona Road Grade Separation Not yet started 224.92 mi (361.97 km) GS
28 Houston Avenue Grade Separation Not yet started 225.96 mi (363.65 km) GS
29 Iona Avenue Grade Separation Not yet started GS Unknown if this structure will actually be constructed. If not, Iona Ave will be terminated on either side of the high speed rail alignment.
30 Idaho Avenue Overcrossing Completed 227.96 mi (366.87 km) Overcrossing May 3, 2023 Idaho Avenue Overcrossing opened on May 3, 2023, along with the Dover Avenue Overcrossing [85]
31 Jackson Avenue Overcrossing Completed 228.97 mi (368.49 km) Overcrossing Sep 15, 2022 Bridge was opened to traffic on September 15, 2022, and was the first structure to be completed in Kings County. [86][87]
32 State Route 43 (near Jersey Avenue) Overpass Not yet started GS High speed rail will pass through a closed Jersey Avenue and under SR 43 which will be rebuilt on an elevated structure.
33 Kent Avenue Grade Separation Completed 231.18 mi (372.05 km) GS Oct 12, 2022 Structure completed and opened to traffic on October 12, 2022, and was the second structure to be completed in Kings County. [88][89]
34 Kansas Avenue Grade Separation Completed 232.21 mi (373.71 km) GS Nov 2, 2023 [90]
35 Lansing Avenue Underpass Not yet started Culvert Box culvert-style agricultural underpass.
36 Cross Creek Viaduct Not yet started Viaduct Viaduct spanning Cross Creek.
37 State Route 43 (south of Cross Creek) Overpass Not yet started 235.82 mi (379.52 km) Overpass High speed rail crossing under a new elevated structure for SR 43.
38 Newark Avenue Overpass Not yet started Overpass High speed rail crossing over Newark Avenue. This grade separation structure may not be built; if so, Newark Ave will be terminated on either side of the high speed rail embankment.
39 Waukena Avenue Overpass Not yet started 240.17 mi (386.52 km) Overpass High speed rail crossing over a realigned Waukena Avenue (a/k/a Corcoran Highway).
40 Whitley Avenue Overpass Under construction 241.16 mi (388.11 km) Overpass High speed rail crossing over Whitley Avenue/SR 137. Construction started in December 2022 and is expected to continue through 2023 and into 2024.
41 Tule River Viaduct & Pergola Under construction 244.79 mi (393.95 km) Viaduct/Pergola Viaduct/Pergola/Bridge combination over SR 43, Avenue 144, the BNSF Railway, and the Tule River. SR 43 realigned. As of November 22, 2023, 102 girders of the 264 total needed have been placed.
42 Avenue 120 Grade Separation Under construction 248.1 mi (399.3 km) GS Land has started being cleared on both sides.[91]
43 Avenue 88 Grade Separation Under construction 252.90 mi (407.00 km) GS Embankments and abutments complete.

Bridge deck has been complete for several months, awaiting paving of embankment ramps.
44 Deer Creek Viaduct Under construction Viaduct Viaduct spanning Deer Creek and adjacent wetlands to the south.
45 West Isle Line Railroad Grade Separation Not yet started Railway GS High speed rail to cross over freight rail track on an overhead structure.
46 Alpaugh Irrigation Pond Not yet started Causeway High speed rail to bisect Alpaugh Pond via a causeway.
47 Avenue 56 Grade Separation Under construction 257.16 mi (413.86 km) GS Embankments have begun being built up, power line and temporary road relocations are complete.
48 Avenue 24 Grade Separation Under construction 261.17 mi (420.31 km) Culvert Box culvert-style agricultural underpass. Utility relocations are complete, embankments are in the process of being built up.

CP 4 (Tulare/Kern – Poplar Avenue)

CP4 spans 22 miles (35 km), from the end of CP2-3 to the intersection of Poplar and Madera Avenue northwest of Shafter. The contract was awarded February 29, 2016, and a Notice to Proceed was given on April 15, 2016.[3]: 30 

As of November 2023, all 11 structures were complete; out of 22 miles of guideway, 21 were complete, and the remaining one was under construction.[44]

# Project Status Milepost Type Date of completion Notes Refs
1 Garces Highway Viaduct Completed 266.50 mi (428.89 km) Viaduct Jan 27, 2021 Bridge allowing High Speed Rail to pass over Garces Highway [92]
2 North-South Canal Culvert Under construction Culvert Culvert for Semitropic Water Storage District Canal to cross under High Speed Rail embankment. This project was delayed by cracks discovered in the existing canal when preparing the diversion of it to the relocated crossing.
3 Pond Road Viaduct Completed 270.00 mi (434.52 km) Viaduct May 10, 2023 [93]
4 Peterson Road Bridge Completed 271.20 mi (436.45 km) Grade Separation (GS) May 10, 2023 [94]
5 Sherwood Canal Culvert Completed Culvert Culvert for Canal to cross under High Speed Rail embankment. Completed sometime prior to Spring 2022.
6 Poso Creek Viaduct Completed Viaduct Oct 28, 2020 240 ft (73 m) length [95]
7 McCombs Road Grade Separation Completed 277.30 mi (446.27 km) GS Jul 18, 2023 McCombs Road crossing over High Speed rail, BNSF tracks, and SR 43. [96]
8 SR 46 Underpass Under construction Underpass Rebuilt underpass enabling SR 46 to pass under High Speed Rail and BNSF tracks. Girders have been placed.
9 Wasco Pedestrian Underpass Under construction Underpass Box culvert underpass enabling pedestrians to cross under High Speed Rail for access to Wasco AMTRAK Station along adjacent BNSF tracks. Street-side and station-side connecting ramps and stairs being built.
10 Poso Drive Underpass Completed Underpass Aug 3, 2023 New underpass enabling Poso Drive to pass under High Speed Rail and BNSF tracks, now complete and open to traffic.
11 Wasco Viaduct Under construction 280.40 mi (451.26 km) Viaduct/Pergola All girders have been placed. Bridge deck edge walls have begun having their forms put up on half of the northern approach to the pergola section. [97][98]
12 Kimberlina Viaduct Completed 281.40 mi (452.87 km) Viaduct Viaduct for High Speed Rail to pass over Kimberlina Road. [99]
13 Merced Avenue Grade Separation Completed GS Aug 9, 2023 Roadway overpass of SR 43, BNSF Railway, and high speed rail alignment now completed and open to traffic. Temporary solar panels installed for powering roadway lighting pending permanent connection to PG&E electrical grid.


Station construction details

Five stations are planned for the Initial Operating Segment (IOS). The design contract for the central valley stations was awarded on October 20, 2022. This contact is for initial planning, including utilities management; a follow-on contract will be necessary for detailed station construction plans.[100] The number of stations on the completed system was limited by Proposition 1A to 24.

At the start of operations of the Interim Initial Operating Segment (Interim IOS, Merced to Bakersfield) there will be 5 stations. These stations are discussed in the 2023 Project Update Report on pages 12-15. The report also has a timeline (on pages 8-9) that shows station construction is anticipated to commence in mid-2026, and finish in mid-2029.

Station Information
StationStatusLocationNotesImages
MercedInitial planing & designAn aerial multi-modal hub station located adjacent to State Route 99, the Union Pacific Railroad Line and the Merced Transpo between R and O streets.Local community is responsible...
MaderaInitial planing & designLocated on Ave. 12 in MaderaThe Authority is responsible...
Fresno Historic DepotThe Fresno Historic Depot seismic retrofit design also commenced and is expected to be completed in December 2024.Located in downtown Fresno on H Street between Fresno and Tulare streets.The Authority is responsible
Kings-Tulare RegionalInitial planing & designLocated near the intersection of State Routes 198 and 43The Authority is responsible...
BakersfieldInitial planing & designProject area is generally bounded by F Street to the west, 38th Street to the north, Union Avenue to the east and California Avenue to the southThe Authority is responsible...

Per the December 6, 2023 Board Memo: Construction Update: [101]

"Central Valley Station Design Update
The station design contract was executed in March 2023 and awarded to Foster + Partners and Arup (F+P Arup) for the first phase of station designs. The preliminary designs for the four Central Valley stations have started, and the concept designs were submitted to the Authority in November 2023. The Fresno Historic Depot seismic retrofit design also commenced and is expected to be completed in December 2024. Outreach and coordination efforts with local agencies and stakeholders will remain ongoing as the design of stations advances."

References

  1. ↑ "San Joaquin River Viaduct Chosen as Structure Project of the Year by the California Transportation Foundation". High Speed Rail Authority. May 27, 2021.
  2. ↑ https://hsr.ca.gov/wp-content/uploads/2023/11/BK-Construction-Update-December-2023-FINAL-A11Y.pdf
  3. 1 2 3 4 5 6 7 "Build HSR 'Construction Progress'". California High-Speed Rail Authority Finance & Audit Committee.
  4. 1 2 "Construction Package 1". BuildHSR. California High-Speed Rail Authority. Retrieved 2023-07-30.
  5. ↑ "Construction Package 2-3". BuildHSR. California High-Speed Rail Authority. Retrieved 2023-07-30.
  6. ↑ "Construction Package 4". BuildHSR. California High-Speed Rail Authority. Retrieved 2023-07-30.
  7. ↑ "Board Memo: Consruction Update" (PDF). CAHSR Authority. Retrieved 1 December 2023.
  8. ↑ https://hsr.ca.gov/wp-content/uploads/2023/03/2023-Project-Update-Report-FINAL-022823.pdf
  9. ↑ "2022 Business Plan" (PDF). p. 42.
  10. ↑ "Caltrain Electrification Delayed to 2024 | Caltrain". 3 June 2021.
  11. ↑ "Metro to Approve Early Phase of Union Station Run-Through Tracks Construction". 24 May 2022.
  12. ↑ https://hsr.ca.gov/wp-content/uploads/2023/03/2023-Project-Update-Report-FINAL-022823.pdf pg 11
  13. ↑ Michael Martinez (July 19, 2012). "Governor signs law to make California home to nation's first truly high-speed rail". CNN. Retrieved September 3, 2012.
  14. ↑ "Office of Governor Edmund G. Brown Jr". ca.gov. Archived from the original on September 5, 2015. Retrieved January 14, 2016.
  15. ↑ "High-Speed Rail Authority Hosts Official Groundbreaking Ceremony" (PDF). California High-Speed Rail Authority. January 6, 2015.
  16. ↑ "California High-Speed Train November 2008 Business Plan" (PDF). Hsr.ca.gov. Retrieved July 25, 2022.
  17. ↑ "Revised 2012 Business Plan" (PDF). Hsr.ca.gov. Retrieved July 25, 2022.
  18. ↑ "Project Update Report to the California State Legislature" (PDF). Hsr.ca.gov. Retrieved 2016-01-14.
  19. ↑ "2018 Business Plan" (PDF). Hsr.ca.gov. Retrieved July 25, 2022.
  20. ↑ Draft 2020 Business Plan
  21. ↑ 2022 Business Plan. Chapter 5
  22. 1 2 "Bold Bets: California on the Move?". The Atlantic. February 25, 2015. Video of event
  23. ↑ "High-Speed Rail Authority Approves State Matching Funds to Extend Backbone of Statewide System" (Press release). California High-Speed Rail Authority. December 20, 2010. Archived from the original on December 26, 2010. Retrieved January 8, 2010.
  24. ↑ Cruickshank, Robert (August 12, 2014). "STB Approves Fresno to Bakersfield Route". California High-Speed Rail Blog. Archived from the original on November 21, 2014.{{cite web}}: CS1 maint: unfit URL (link)
  25. ↑ Sheehan, Tim (December 15, 2014). "U.S. board: Federal law on high-speed rail trumps state environmental lawsuits". The Fresno Bee.
  26. ↑ Sheehan, Tim (June 2, 2015). "Farm Bureaus jump into Supreme Court high-speed rail case". The Fresno Bee.
  27. ↑ "Archived copy" (PDF). Archived from the original (PDF) on 2015-09-24. Retrieved 2015-08-31.{{cite web}}: CS1 maint: archived copy as title (link)
  28. ↑ "Tutor Perini Joint Venture Executes Contract for California High-Speed Rail Project". The Wall Street Journal. August 20, 2013.
  29. ↑ "California high-speed-rail groundbreaking pushed back another few months". San Jose Mercury News. September 17, 2013. Retrieved October 21, 2013.
  30. ↑ Interview of Dan Richard by James Fallows at Bold Bets conference on February 25, 2015
  31. ↑ Sheehan, Tim (May 12, 2015). "Five construction teams invited to bid for next high-speed rail contract in Valley". The Fresno Bee.
  32. ↑ "Archived copy" (PDF). Archived from the original (PDF) on 2015-09-24. Retrieved 2015-08-31.{{cite web}}: CS1 maint: archived copy as title (link)
  33. ↑ "Archived copy" (PDF). Archived from the original (PDF) on 2016-01-09. Retrieved 2016-01-16.{{cite web}}: CS1 maint: archived copy as title (link)
  34. ↑ "CA: High-Speed Rail Contract Inked for Kern County Stretch". Archived from the original on 2016-05-13. Retrieved 2016-04-29.
  35. ↑ Weikel, Dan; Vartabedian, Ralph (June 8, 2015). "First phase of bullet train is cut due to Bakersfield, Shafter disputes". Los Angeles Times.
  36. ↑ "NEWS RELEASE: California High-Speed Rail Board Approves Design Contracts to Prepare for Construction into Merced and Bakersfield". California High-Speed Rail. Retrieved 2022-08-17.
  37. ↑ "Despite Hurdles, Pushback, Major Construction Under Way On High-Speed Rail Project". Construction Equipment Guide. 15 November 2022. Retrieved 26 December 2022.
  38. ↑ CAHSRA. "High Speed Rail Board Awards Design Contract for Central Valley Stations".
  39. ↑ "Senate Bill No. 1029". California Legislature. Retrieved 27 December 2022.
  40. ↑ "Connectivity Projects". California HSRA. Retrieved 27 December 2022.
  41. ↑ "Caltrain Electrification Delayed to 2024 | Caltrain". 3 June 2021.
  42. ↑ "Metro to Approve Early Phase of Union Station Run-Through Tracks Construction". 24 May 2022.
  43. ↑ "Connectivity Projects". California HSRA. Retrieved 27 December 2022.
  44. 1 2 3 CAHSRA. "Central Valley Status Report January 2024" (PDF).
  45. ↑ "Rail Crossing Inventory Data". California Public Utilities Commission. Retrieved 4 August 2023.
  46. ↑ "Madera Station Relocation Project". San Joaquin Joint Powers Authority. Retrieved 2023-10-01.
  47. ↑ "Road 27 Grade Separation". BuildHSR. California High-Speed Rail Authority. Retrieved 2021-09-24.
  48. ↑ "Fresno River Viaduct". BuildHSR. California High-Speed Rail Authority. Retrieved 2021-09-24.
  49. ↑ "NEWS RELEASE: High-Speed Rail Authority Completes Overpass, Opens Roadway to Traffic in Madera County". California High-Speed Rail. Retrieved 2022-08-28.
  50. ↑ "Avenue 15 Grade Separation". BuildHSR. California High-Speed Rail Authority. Retrieved 2021-09-24.
  51. ↑ "Cottonwood Creek Viaduct". BuildHSR. California High-Speed Rail Authority. Retrieved 2021-09-24.
  52. ↑ "Avenue 12 Grade Separation". BuildHSR. California High-Speed Rail Authority. Retrieved 2021-09-24.
  53. ↑ "Avenue 11 Grade Separation". BuildHSR. California High-Speed Rail Authority. Retrieved 2021-09-24.
  54. ↑ "Avenue 10 Grade Separation". BuildHSR. California High-Speed Rail Authority. Retrieved 2021-09-24.
  55. ↑ "Avenue 8 Overpass". BuildHSR. California High-Speed Rail Authority. Retrieved 2021-09-24.
  56. ↑ "Avenue 7 Grade Separation". BuildHSR. California High-Speed Rail Authority. Retrieved 2021-09-24.
  57. ↑ "San Joaquin River Viaduct & Pergola". BuildHSR. California High-Speed Rail Authority. Retrieved 2021-09-24.
  58. ↑ "Construction Update: May 2021 Edition". BuildHSR. California High-Speed Rail Authority. Retrieved 2021-12-21.
  59. ↑ "Veterans Boulevard". BuildHSR. California High-Speed Rail Authority. Retrieved 2021-09-24.
  60. ↑ "Golden State Boulevard Realignment". BuildHSR. California High-Speed Rail Authority. Retrieved 2021-09-24.
  61. ↑ "State Route 99 Realignment". BuildHSR. California High-Speed Rail Authority. Retrieved 2021-09-24.
  62. 1 2 "Fresno Trench & State Route 180 Passageway". BuildHSR. California High-Speed Rail Authority. Retrieved 2021-09-23.
  63. ↑ "Tuolumne Street Bridge Construction". BuildHSR. California High-Speed Rail Authority. Retrieved 2021-09-23.
  64. ↑ "Tulare Street Undercrossing". BuildHSR. California High-Speed Rail Authority. Retrieved 2021-09-23.
  65. ↑ "Ventura Street Undercrossing". BuildHSR. California High-Speed Rail Authority. Retrieved 2021-09-23.
  66. ↑ "PHOTO RELEASE: High-Speed Rail Completes Signature Structure in City of Fresno". California High-Speed Rail. Retrieved 2023-05-10.
  67. ↑ "Muscat Avenue Viaduct". BuildHSR. California High-Speed Rail Authority. Retrieved 2021-09-23.
  68. ↑ CAHSRA. "Central Valley Status Report, September 2022" (PDF). p. 18.
  69. ↑ "American Avenue Grade Separation". BuildHSR. California High-Speed Rail Authority. Retrieved 2021-09-23.
  70. ↑ "Adams Avenue Grade Separation". BuildHSR. California High-Speed Rail Authority. Retrieved 2021-12-13.
  71. ↑ "South Avenue Grade Separation". BuildHSR. California High-Speed Rail Authority. Retrieved 2021-12-13.
  72. ↑ "Mountain View Avenue Grade Separation". BuildHSR. California High-Speed Rail Authority. Retrieved 2021-12-13.
  73. ↑ "Conejo Viaduct". BuildHSR. California High-Speed Rail Authority. Retrieved 2021-12-13.
  74. ↑ "Fowler Avenue Grade Separation". BuildHSR. California High-Speed Rail Authority. Retrieved 2021-12-13.
  75. ↑ CAHSRA. "High-Speed Rail Authority Completes Overcrossing at Davis Avenue in Fresno County".
  76. ↑ "State Route 43 Tied Arch Bridge". BuildHSR. California High-Speed Rail Authority. Retrieved 2021-12-13.
  77. ↑ "California High-Speed Rail Construction Update" (PDF). Hsr.ca.gov. Retrieved July 25, 2022.
  78. ↑ "Cairo Avenue Viaduct". BuildHSR. California High-Speed Rail Authority. Retrieved 2021-12-13.
  79. ↑ CA High-Speed Rail DRONE UPDATE: Cairo Avenue Viaduct - Kings County, CA | 10/7/22, retrieved 2022-10-08
  80. ↑ California High-Speed Rail. "🚨 The Authority & contractor @DFJV_CP23 announced the completion of the Dover Avenue & Idaho Avenue grade separations. These two new overcrossings are now open to traffic & are the latest HSR structures to be completed in Kings County. #BuildHSR 🔗". Twitter. Retrieved 4 May 2023.
  81. ↑ "Excelsior Avenue Overcrossing". BuildHSR. California High-Speed Rail Authority. Retrieved 2021-12-13.
  82. ↑ "Flint Avenue Grade Separation". BuildHSR. California High-Speed Rail Authority. Retrieved 2021-12-13.
  83. ↑ "Fargo Avenue Grade Separation". BuildHSR. California High-Speed Rail Authority. Retrieved 2021-12-13.
  84. ↑ "Hanford Viaduct". BuildHSR. California High-Speed Rail Authority. Retrieved 2021-12-13.
  85. ↑ California High-Speed Rail. "🚨 The Authority & contractor @DFJV_CP23 announced the completion of the Dover Avenue & Idaho Avenue grade separations. These two new overcrossings are now open to traffic & are the latest HSR structures to be completed in Kings County. #BuildHSR 🔗". Twitter. Retrieved 4 May 2023.
  86. ↑ "Jackson Avenue Overcrossing". BuildHSR. California High-Speed Rail Authority. Retrieved 2021-12-13.
  87. ↑ "Twitter message". Twitter. Retrieved 2022-09-15.
  88. ↑ "Kent Avenue Grade Separation". BuildHSR. California High-Speed Rail Authority. Retrieved 2021-12-13.
  89. ↑ "NEWS RELEASE: High-Speed Rail Completes Second Structure in Kings County". California High-Speed Rail. 2022-10-12. Retrieved 2022-10-12.
  90. ↑ CAHSRA. "High-Speed Rail Authority Completes Overcrossing at Kansas Avenue in Kings County".
  91. ↑ "Avenue 120 on Sentinelhub".
  92. ↑ "Garces Highway Viaduct". BuildHSR. California High-Speed Rail Authority. Retrieved 2021-12-13.
  93. ↑ "Pond Road Viaduct". BuildHSR. California High-Speed Rail Authority. Retrieved 2021-12-13.
  94. ↑ "Peterson Road Bridge". BuildHSR. California High-Speed Rail Authority. Retrieved 2021-12-14.
  95. ↑ "Poso Creek Viaduct". BuildHSR. California High-Speed Rail Authority. Retrieved 2021-12-14.
  96. ↑ California High-Speed Rail. "🚨 The McCombs Road overcrossing in Kern County is now completed! This is the fifth structure completed by the Authority in 2023. This grade separation spans 415 ft, is 40 ft wide, & realigns McCombs Road to take traffic over SR 43 and the future high-speed rail lines. #BuildHSR". Twitter. Retrieved 2023-07-27.
  97. ↑ "Wasco Viaduct". BuildHSR. California High-Speed Rail Authority. Retrieved 2021-12-14.
  98. ↑ "California High-Speed Rail Project Drone Flyover UPDATE - Wasco, CA: 5/14/22 [4K 60FPS HDR] - YouTube". Retrieved 2022-05-15 – via YouTube.
  99. ↑ "Kimberlina Viaduct". BuildHSR. California High-Speed Rail Authority. Retrieved 2021-12-14.
  100. ↑ CAHSRA. "High Speed Rail Board Awards Design Contract for Central Valley Stations".
  101. ↑ "Board Memo: Consruction Update" (PDF). CAHSR Authority. Retrieved 1 December 2023.
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