Interstate 5 marker

Interstate 5

National Purple Heart Trail
Korean War Veterans Memorial Highway
Map of Western Oregon with I-5 highlighted in red
Route information
Maintained by ODOT
Length308.14 mi[1] (495.90 km)
ExistedAugust 14, 1957[2][3]–present
HistoryCompleted in 1966
NHSEntire route
Major junctions
South end I-5 at California state line near Ashland
Major intersections
North end I-5 at Washington state line in Portland
Location
CountryUnited States
StateOregon
CountiesJackson, Josephine, Douglas, Lane, Linn, Marion, Clackamas, Washington, Multnomah
Highway system
← OR 3→ OR 6

Interstate 5 (I-5) in the U.S. state of Oregon is a major Interstate Highway that traverses the state from north to south. It travels to the west of the Cascade Mountains, connecting Portland to Salem, Eugene, Medford, and other major cities in the Willamette Valley and across the northern Siskiyou Mountains. The highway runs 308 miles (496 km) from the California state line near Ashland to the Washington state line in northern Portland, forming the central part of Interstate 5's route between Mexico and Canada.

I-5 was designated in 1957 and replaced U.S. Route 99 (US 99) for most of its length, itself preceded by the Pacific Highway and various wagon roads. The freeway incorporated early bypasses and expressways built for US 99 in the 1950s, including a new freeway route from Portland to Salem, and additional bypasses were built using federal funds. The last segment of I-5, on the Marquam Bridge in Portland, was opened in October 1966 and the whole highway was dedicated later that month. The freeway remains parallel or concurrent to Oregon Route 99 (OR 99) and its spur routes, running along former segments of US 99 that were bypassed by I-5, from Ashland to Portland.

Under Oregon's named route system, all of I-5 is designated as Pacific Highway No. 1. The Salem–Portland section was named the Baldock Freeway until 2022. The freeway also has three signed auxiliary routes that function as spurs and bypasses of major cities: I-105 in Eugene, I-205 in eastern Portland, I-405 in downtown Portland. Two additional auxiliary routes were planned in the early years of the Interstate system, but were shelved after local opposition.

Route description

Interstate 5 is the second-longest freeway in Oregon, at 308 miles (496 km), and is the only Interstate to traverse the state from north to south.[4] The highway connects several of the state's largest metropolitan areas, which lie in the Rogue and Willamette valleys,[5] and passes through counties with approximately 81 percent of Oregon's population.[6] As a component of the Interstate Highway System, I-5 is also designated as an important highway under the National Highway System.[7][8] It is officially designated under Oregon's named route system as the Pacific Highway No. 1, a name shared with Oregon Route 99 (OR 99) and its split routes north of Junction City.[9] OR 99 runs concurrent to I-5 through most of southern Oregon, splitting from the freeway to serve city centers and use other alternate routes, while OR 99W and OR 99E serve corridors on opposite sides of the Willamette River.[5] The state legislature also designated I-5 as the Purple Heart Trail and Korean War Veterans Memorial Highway in 2015.[10][11]

I-5 is maintained by the Oregon Department of Transportation (ODOT), who conduct an annual survey of traffic volume that is expressed in terms of annual average daily traffic (AADT), a measure of traffic volume for any average day of the year. The highway's busiest section is near Durham between junctions with I-205 and OR 217, carrying 164,000 vehicles in 2017. The least-traveled section of I-5 is located near Ashland and carries only 16,600 vehicles.[9]

California to Eugene

Aerial view of Interstate 5 in downtown Medford, where it travels on an elevated viaduct

I-5 enters Oregon at the California state line in southern Jackson County. The highway travels northeast along a ridge in the Siskiyou Mountains, with a maximum grade of 6 percent, to Siskiyou Summit;[12] at 4,310 feet (1,310 m), it is the highest point on all of I-5 and one of the highest points on the Interstate system.[13] The mountainous, 11-mile (18 km) section of the freeway runs along Siskiyou Pass and includes several runaway truck ramps and chain-up areas due to its heavy use by trucks and its foggy and snowy conditions in winter.[13][14] North of the summit, the freeway intersects the Old Siskiyou Highway (OR 273) and the Pacific Crest Trail before it travels out of the Rogue River–Siskiyou National Forest.[15][16]

The highway descends from the mountains into the Rogue Valley and intersects the south end of OR 99 west of Emigrant Lake, adjacent to a railroad underpass. I-5 follows OR 99 and passes a rest area and welcome center before entering the city of Ashland.[17] The freeway crosses OR 66 west of the city's municipal airport and follows Bear Creek around the north side of downtown Ashland. I-5 and OR 99 run parallel each other on opposite sides of Bear Creek through Talent and Phoenix to Medford, at the center of the Rogue Valley and its winery region.[18][19] The freeway runs through downtown Medford on a 3,229-foot (984 m) elevated viaduct with no exits to the city center.[20][21] It then intersects OR 62 at the Rogue Valley Mall, providing access to Crater Lake and Mount McLoughlin northeast of the valley. The freeway continues northwest, passing Rogue Valley International–Medford Airport and the suburb of Central Point before turning west to follow the Rogue River.[5][15]

I-5 follows the Rogue River downstream through a narrow valley, where OR 99 and a railroad cross over and under the freeway several times, and passes Valley of the Rogue State Park. It also passes the Oregon Vortex, a popular roadside attraction near Gold Hill.[19] At the west end of the valley in Josephine County, the freeway reaches Grants Pass and intersects U.S. Route 199 (US 199), which connects to Crescent City, California, on the Pacific Coast.[5][22] The freeway continues along the northeast edge of Grants Pass and becomes concurrent with OR 99 at an interchange north of the city. I-5 splits from the Rogue River and continues north along a zig-zag course across several passes and valleys in the Southern Oregon Coast Range. At Wolf Creek, it passes a historic inn and tavern that is listed on the National Register of Historic Places.[19] The freeway crosses into Douglas County near Stage Road Pass east of Glendale and turns northeast to follow the Cow Creek valley before resuming its northern course through the mountains. After descending from Canyon Creek Pass and following Canyon Creek, I-5 reaches Canyonville and passes the Seven Feathers Casino Resort.[19] The freeway follows the South Umpqua River through Myrtle Creek and the Cow Creek Reservation, with OR 99 splitting to serve Winston. I-5 intersects OR 42 east of Winston in Green and continues north into the outskirts of Roseburg.[5][15]

Within Roseburg, the freeway runs along the west bank of the South Umpqua River opposite from the city's downtown and passes through several residential neighborhoods near the regional airport. At Harvard Avenue, I-5 begins a concurrency with OR 138 that continues for 12 miles (19 km) to Sutherlin, running parallel to OR 99 as the highways cross the North Umpqua River. OR 99 rejoins I-5 between Oakland and Yoncalla in the Cabin Creek canyon, but splits off again to serve the Pass Creek valley while I-5 remains in the Pleasant Valley. The two highways are rejoined at Anlauf and continue northeast along Pass Creek towards Cottage Grove in Lane County. The freeway runs through the eastern outskirts of Cottage Grove and continues north along the Coast Fork Willamette River into the Willamette Valley, trading the mountainous terrain of southern Oregon for rolling hills and farms. At Goshen, I-5 intersects OR 58 and passes the Lane Community College campus before entering Eugene.[5][15]

Eugene to Wilsonville

The Whilamut Passage Bridge, a pair of arch bridges that carry I-5 over the Willamette River in Eugene

I-5 continues north into Eugene, running along the city's eastern border with Springfield, and intersects OR 225 at Coryell Pass. OR 99 then splits from the freeway travels west along OR 126 Business into downtown Eugene, serving the University of Oregon campus, and continues north to Junction City, where it splits into OR 99W and OR 99E.[5] The freeway then travels over the Whilamut Passage Bridge, a pair of concrete arch bridges that span 1,985 feet (605 m) across the Willamette River west of downtown Springfield.[23] On the north side of the river near the Gateway Mall, it intersects I-105, providing freeway access to downtown Eugene, and OR 126. At the north end of Eugene, intersects Beltline Road in a partial cloverleaf interchange with direct ramps to the western freeway, which carries OR 569 around Eugene.[5][15]

The freeway leaves Eugene after crossing the McKenzie River at Armitage Park south of Coburg. I-5 continues north along OR 99E through rural Linn County, intersecting OR 228 near Brownsville and OR 34 west of Lebanon, before the two highways reach Albany. The freeway skirts the east side of the city, where it intersects US 20, and begins a concurrency with OR 99E. I-5 and OR 99E then intersect the south and north ends of OR 164 near Millersburg and the Ankeny National Wildlife Refuge.[5] The freeway continues northeast and passes the Enchanted Forest amusement park and several wineries before reaching the southern outskirts of Salem.[15][19]

The freeway travels around McNary Field and intersects OR 22 at Mission Street, near the Corban University campus southeast of downtown Salem. I-5 and OR 99E continue north through suburban Salem, passing the Oregon State Penitentiary and Oregon State Hospital campus, which is located two miles (3.2 km) east of the Oregon State Capitol and Willamette University. Between the Willamette Town Center shopping mall and the Oregon State Fairgrounds, the freeway intersects the south end of OR 213, a local highway that parallels I-5 to the east towards the Portland area.[5] OR 99E splits from I-5 at an interchange with Portland Road, located west of the Chemeketa Community College campus in Hayesville. The freeway continues northwest into Keizer and intersects Salem Parkway, a divided highway carrying OR 99E Business, at an interchange that straddles the 45th parallel (marked with a sign in the median).[15][24]

I-5 continues northeast from the interchange, passing the Keizer Station complex and the minor-league Volcanoes Stadium before leaving the suburban fringes of Keizer. The freeway continues north along OR 99E and the former Oregon Electric Railway, passing the Powerland Heritage Park and Oregon Electric Railway Museum near Brooks. At the Woodburn Premium Outlets mall west of Woodburn, I-5 intersects the dual termini of OR 214 and OR 219, which provide access to Silverton and Newberg, respectively.[5][19] It reaches a junction with OR 551 north of Aurora State Airport and adjacent to the French Prairie rest area, which includes a seven-acre (2.8 ha) solar power array with 7,000 panels.[25][26] North of the interchange, I-5 crosses the Willamette River on the Boone Bridge and enters the city of Wilsonville, at the edge of the Portland metropolitan area.[15]

Portland area

Aerial view of Interstate 5 at its interchange with I-405 in Downtown Portland, as seen from the Portland Aerial Tram.

The highway bisects downtown Wilsonville and its adjacent suburban neighborhoods, continuing north along the WES Commuter Rail line into Tualatin. On the south side of the city, I-5 intersects the south end of I-205, a bypass of Portland serving Oregon City and eastern Portland. The freeway crosses over the Tualatin River into Durham, where it passes the Bridgeport Village shopping center, before entering Tigard and an intersection with OR 217, a major freeway that connects to Beaverton. I-5 then enters Multnomah County and the city of Portland, where it travels around Mount Sylvania and through a meandering course along Barbur Boulevard (part of OR 99W) across several hilltops.[15] In the South Burlingame neighborhood, the freeway begins a fishhook-shaped turn through the "Terwilliger curves", a notoriously dangerous section of I-5 that changes directions five times in one mile (1.6 km). The area averaged about 100 collisions and crashes per year between 1995 and 2005.[27]

I-5 continues north from the Terwilliger curves through South Portland, running uphill from OR 43 on the western bank of the Willamette River and downhill from Barbur Boulevard (now carrying OR 10 and OR 99W). The freeway dives northeasterly towards the South Waterfront district to avoid Marquam Hill, home of the Oregon Health & Science University campus. The lanes of OR 43 are split between Hood and Macadam avenues on west and east sides of I-5 as it crosses under the Portland Aerial Tram and Gibbs Street Pedestrian Bridge.[28] The freeway passes under the Ross Island Bridge (part of US 26) and reaches the southern terminus of I-405, which it intersects in a large Y interchange situated over the light rail tracks of the MAX Orange Line and the Portland Streetcar.[15][29]

I-5 crosses the Willamette River on the Marquam Bridge, connecting two sides of Portland

From the interchange, I-405 passes through the western part of Downtown Portland and Harbor Drive continues into downtown along the Willamette River waterfront.[5] I-5 continues northeast over the Willamette River on the double-decked Marquam Bridge, with its northbound lanes on the upper deck and southbound lanes carried on the lower deck. The bridge is the busiest crossing in Oregon, with over 140,000 daily vehicles traveling across it,[30] and runs parallel to the Tilikum Crossing transit bridge and Ross Island Bridge. The east end of the bridge, adjacent to the Oregon Museum of Science and Industry, has a southbound stub ramp that was built to serve the cancelled Mount Hood Freeway.[31][32] I-5 descends from the bridge and runs north along the Willamette River, following the eastern bank of the river and the Eastbank Esplanade bicycle and pedestrian trail a few blocks west of OR 99E. The freeway crosses over the east end of the Hawthorne Bridge and under the Morrison Bridge, intersecting the latter to provide direct access to Downtown Portland.[15]

After passing under the Burnside Bridge, I-5 intersects the western terminus of I-84, Oregon's lone east–west freeway and the main route through the Columbia River Gorge.[4][5] After the interchange, US 30 joins I-5 in a short concurrency while the freeway travels around major landmarks in the Rose Quarter, including the Oregon Convention Center, the Moda Center, and the Veterans Memorial Coliseum. At Northeast Holladay Street, the highway passes directly over the MAX Light Rail platforms of the Rose Quarter Transit Center just east of the Steel Bridge, which carries four MAX lines and OR 99W into Downtown Portland.[29][33] I-5 veers northwest and briefly into a sunken section near the Broadway Bridge, which carries the Portland Streetcar's loop lines.[29] Between the Boise and Eliot neighborhoods, the freeway intersects the terminating I-405 a short distance from the Fremont Bridge, which carries US 30 west into the Pearl District after it splits from I-5.[15] The interchange, located between the Legacy Emanuel Medical Center and Albina railyard,[34] has a set of three stub ramps that were built for the cancelled Rose City Freeway and were re-purposed to serve the hospital.[31]

Through most of North Portland, I-5 runs in a trench that is crossed by several local streets and pedestrian overpasses, connecting Interstate Avenue to the west and Albina Avenue to the east. Interstate Avenue, a part of OR 99W, also carries the MAX Yellow Line through the Overlook, Arbor Lodge, and Kenton neighborhoods.[35] At an interchange with Going Street, the freeway's northbound lanes gain the city's lone high-occupancy vehicle (HOV) lane, which runs for 3.5 miles (5.6 km) to the north end of Delta Park.[36] I-5 continues north and passes Peninsula Park and the Cascade campus of the Portland Community College in the Piedmont neighborhood before reaching an interchange with Lombard Street, which carries the US 30 Bypass. From the Lombard Street interchange, the freeway turns northwest and crosses over the Columbia Slough, reaching Delta Park on the site of the former city of Vanport.[37] The area also includes the Portland International Raceway and Portland Meadows horse racing track, along with several sports fields. At the north end of Delta Park, I-5 intersects the north end of OR 99E and the east end of OR 120, a short local route connecting to the Portland Expo Center (where the MAX Yellow Line terminates) and St. Johns.[5][35] The freeway continues north onto Hayden Island, where a single exit serves the entire island, and crosses over the Columbia River on the Interstate Bridge into Vancouver, Washington.[15] The Interstate Bridge carries a daily average of 132,000 vehicles and consists of two bridges that lift vertically for river traffic.[38]

History

Predecessor trails and highways

I-5 roughly follows the Siskiyou Trail, an early trading route used by indigenous Oregonians and early trappers between the Willamette Valley and California.[39][40] The trail was re-purposed as a settler's route in 1846, following the creation of the Applegate Trail by the territorial government.[41] It was later incorporated into the early roads of the Willamette Valley, but remained secondary to waterborne transportation along the river and railroads built in the late 19th century.[42] The rising popularity of automobiles at the turn of the century spurred the construction of new highways and the formation of automobile clubs and good roads associations.[43]

The Pacific Highway Association was formed in 1910 to bolster an ongoing campaign to build a highway along the West Coast, from Tijuana to Vancouver, British Columbia.[44][45] The highway was incorporated into a state highway plan adopted by the Oregon State Highway Commission in 1914, a year after the state legislature had established the commission and a state highway department.[46] The first sections of the 345-mile (555 km) Pacific Highway were initially built by counties through bond issues and other revenue streams.[47] Jackson County was the first to begin construction on its section of the highway, breaking ground on a link between Siskiyou Summit and Medford on November 28, 1913.[48][49] These early sections were built using compacted dirt, which turned into mud in inclement weather and rendered them impassible. The state government enacted its own revenue sources for highway construction at the end of the decade, including the first state gas tax to be levied in the United States.[46] The Pacific Highway was completed in 1922 and was the first highway to be completely paved from border to border within a state west of the Mississippi River.[46]

Freeway construction

I-5 near Tigard, photographed in 1973 prior to later expansion

The Oregon state legislature authorized the construction of controlled-access "throughways" (now called freeways) in 1947 and the Pacific Highway was designated as a future corridor the following year.[50][51] A six-cent gas tax increase was approved by the legislature in 1949 and would be used to improve sections of US 99 to freeway standards.[52] It would later be augmented by federal funding under the Interstate Highways program.[53] The State Highway Commission studied and approved the routing of I-5 around several cities in the late 1950s, including an elevated bypass of Medford.[54]

Although not generally referred as such, the portion of I-5 south of Portland near Tigard to Salem was formerly named the Robert Hugh Baldock Freeway after a former Oregon highway engineer.[4] In 2022, the name was removed from state records following the discovery of his membership in the Ku Klux Klan.[55] Early proposals by engineers put the southern section of I-5 further east through Klamath Falls and the flatter Klamath Basin, but the Siskiyou Pass route was favored by local politicians.[56] Most of the highway in the Pacific Northwest was incorporated into U.S. Route 99 (US 99), created as part of a national highway system in 1926.[57] The Oregon section was divided between Junction City and Portland into US 99W and US 99E, with the latter taking the original route of the Pacific Highway.[58] It was completed on December 1, 1961, with direct connections to Harbor Drive in Downtown Portland.[59]

The first modern rest area in Oregon was opened in 1962 between Eugene and Albany; within four years, eight more sets were completed.[46][60] The first section of the East Bank Freeway in Portland, running 2.5 miles (4.0 km) from the Morrison Bridge to Shaver and Failing streets, opened to traffic on January 7, 1964.[61][62] The Marquam Bridge, which connected the completed portions of I-5 to the East Bank Freeway, opened to southbound traffic on October 4, 1966, and northbound traffic two weeks later. Its design was criticized by the public and the Portland Art Commission, who described it as "so gross, so lacking in grace, so utterly inconsistent with any concept of aesthetics" in a formal complaint.[63]

The final section of Interstate 5 was dedicated on October 22, 1966, at the Cow Creek rest area. At the time, the freeway had 114 interchanges and 467 bridge structures; it cost an estimated $298 million to construct.[60][64]

Later history

The Salem–Portland section of I-5 was widened to six lanes in the late 1970s and early 1980s.[46]

The Albany–Salem section was renamed the Atomic Veterans Memorial Highway by the Oregon Legislative Assembly in August 2017.[65] In 2022, ODOT completed an emergency onramp at Mountain Avenue in Ashland to aid in evacuations in the event of a wildfire.[66] The gravel ramp is controlled by a locked gate and was approved for construction following the 2020 Almeda fire, which started in the area and destroyed 2,500 homes.[67]

Future projects

The states of Oregon and Washington began planning of a replacement for the twin spans of the Interstate Bridge in the late 1990s to address regional congestion and disruptions due to the lift span. The Columbia River Crossing program was established in 2004 to design a replacement, which was to be 17 lanes wide over Hayden Island and cost up to $3.5 billion.[68][69] The program was cancelled in 2013 due to opposition within the Washington state legislature; $200 million had been spent during planning, which included federal funds that would need to be reimbursed unless a new proposal was submitted.[68] A new program, named the Interstate Bridge Replacement, began in 2019 and is expected to publish an environmental impact statement in 2023.[70] The updated design would include an eight-lane toll bridge, a multi-use trail for cyclists and pedestrians, and a MAX Light Rail extension into Vancouver.[71] The bridge replacement is expected to cost up to $2.45 billion, while the entire program—including reconstruction of several interchanges and transit improvements—is estimated to cost $5.5 billion to $7.5 billion and would begin construction in 2025.[72]

In 2017, ODOT began planning an expansion of I-5 through the Rose Quarter to address congestion and safety issues on a 1.8-mile (2.9 km) section between I-84 and I-405.[73] The agency's proposal—the addition of an auxiliary lane for merging and weaving traffic, as well as a freeway lid—would cost $450 million and was approved by the state legislature that year.[74] The project attracted opposition and protests as it went through several years of environmental review and design revisions, during which the estimated cost grew to $715 million by 2020.[75][76] In June 2020, several elected officials from the city and county governments announced that they would not support the proposal, following a local nonprofit advocacy group from the Albina neighborhood that did the same.[77] A new design with larger freeway lids and potential for development, estimated to cost $1.25 billion, was adopted by ODOT in September 2021; the city government later returned to the project, which was expected to begin construction in 2025.[78] By June 2023, the estimated cost had risen to $1.9 billion and ODOT delayed work on the project for an indefinite period of time.[79]

Exit list

CountyLocation[80]mi[80]kmExitDestinationsNotes
Jackson​0.000.00—
 I-5 south – Yreka, Redding		Continuation into California
​0.741.191Siskiyou SummitNorthbound exit and southbound entrance; unsigned OR 273
​4.306.92Siskiyou Summit, elevation 4,310 feet (1,310 m)
​5.368.636Mount AshlandUnsigned OR 273
​11.6218.7011
 OR 99 north (Siskiyou Boulevard) – Ashland		Northbound exit and southbound entrance
Ashland14.2022.8514 OR 66 – Ashland, Klamath Falls
​19.1430.8019Valley View Road – AshlandValley View Road only appears on northbound signage
Talent21.2234.1521Talent
Phoenix24.4239.3024Phoenix
Medford27.2443.8427
 To OR 99 – South Medford
30.3248.8030

 OR 62 east (Crater Lake Highway) to OR 238 – North Medford, Crater Lake		Northbound exit and entrance

 OR 62 east (Crater Lake Highway) – Medford, Klamath Falls		Southbound exit and entrance
Central Point32.7852.7533Central Point, Eagle Point
​35.5157.1535

 OR 99 south / OR 140 east / Blackwell Road – Central Point
​40.8665.7640
 OR 99 (Rogue-Umpqua Scenic Byway / Blackwell Road) to OR 234		Northbound exit and entrance
Gold HillSouthbound exit and entrance
​43.8070.4943

 To OR 99 (Rogue River Route) / OR 234 – Gold Hill, Crater Lake		OR 234, Gold Hill, and Crater Lake only appear on southbound signage
​45.4873.1945A OR 99 (Rogue River Route)
​45.75–
46.08		73.63–
74.16		45BValley of the Rogue State Park
Rogue River48.8578.6248City of Rogue River
JosephineGrants Pass55.8189.8255
 US 199 south (Redwood Highway) – South Grants Pass
57.96–
58.34		93.28–
93.89		58

 OR 99 south to US 199 (Redwood Highway) – Grants Pass City Center		South end of OR 99 concurrency
​61.4798.9361Merlin
​66.31106.7266Hugo
​69.11111.22Sexton Mountain Pass summit, elevation 1,960 feet (600 m)
​71.42114.9471Sunny Valley
​73.84118.83Smith Hill summit, elevation 1,730 feet (530 m)
Wolf Creek75.82–
76.78		122.02–
123.57		76Wolf Creek
​78.46126.2778Speaker RoadSouthbound exit and northbound entrance
​79.81128.44Stage Road Pass summit, elevation 1,830 feet (560 m)
Douglas​80.79130.0280Glendale
​83.28134.0383Barton RoadNorthbound exit and southbound entrance
Quines Creek86.13138.6186Quines Creek Road / Barton RoadBarton Road only appears on southbound signage
​88.12141.8288Azalea, Galesville Reservoir
​90.19145.15Canyon Creek Pass summit, elevation 2,020 feet (620 m)
​95.81154.1995Canyon Creek
Canyonville98.27158.1598Canyonville, Days Creek
​99.51160.1599North Canyonville, Stanton Park (northbound), Crater Lake (southbound)
​101.05–
101.39		162.62–
163.17		101Riddle, Stanton ParkStanton Park only appears on southbound signage
​101.89163.98102Gazley Road
Tri-City103.94167.28103Tri-City, Riddle
Myrtle Creek106.70171.72106Tri-City, Myrtle CreekNorthbound signage
Weaver RoadSouthbound signage
107.98–
108.47		173.78–
174.57		108Myrtle Creek
​110.35177.59110Boomer Hill Road
​112.12–
112.48		180.44–
181.02		112


 OR 99 north to OR 42 west – Dillard, Coos Bay, Winston		OR 99 and OR 42 only appear on northbound signage; Winston only appears on southbound signage; northern end of concurrency with OR 99
​113.43182.55113Clarks Branch Road – Round Prairie
​116.42187.36Roberts Mountain summit, elevation 956 feet (291 m)
Green119.50192.32119

 OR 42 west to OR 99 – Winston, Coos Bay
​120.48193.89120
 OR 99 north – South Roseburg		Northbound exit only
Green District, RoseburgSouthbound exit and entrance
​121.68195.82121McLain Avenue
​123.00197.95123Douglas County Fairgrounds, Umpqua Park
Roseburg124.13199.77124
 OR 138 east – Roseburg City Center, Diamond Lake		Southern end of concurrency with OR 138
125.07201.28125Garden Valley Boulevard – Roseburg
126.51203.60127Edenbower Boulevard – North Roseburg
​129.45208.33129WinchesterNorthbound signage
WilburSouthbound signage
Sutherlin135.13217.47135Sutherlin, Wilbur
136.51219.69136
 OR 138 west – Sutherlin, Elkton		Northern end of concurrency with OR 138
​138.29222.56138OaklandNorthbound exit and southbound entrance
​140.53226.16140
 OR 99 south – Oakland		Southern end of concurrency with OR 99; southbound exit and northbound entrance
​142.17228.80142Metz Hill
​142.31229.03Rice Hill summit, elevation 723 feet (220 m)
​146.24235.35146Rice Valley
Rice Hill148.40–
149.59		238.83–
240.74		148Rice Hill
​150.32241.92150

 OR 99 north to OR 38 – Yoncalla, Drain		North end of OR 99 concurrenmcy
​154.36–
154.95		248.42–
249.37		154Scotts Valley, Elkhead
​159.27256.32159Cox Road – Elk Creek
​160.13257.70160Salt Springs Road
​161.70260.23161Anlauf, LoraneNorthbound exit only
​162.35261.28162

 OR 38 west / OR 99 south – Drain, Elkton		Southern end of concurrency with OR 99
​163.43263.02163Curtin, Lorane
Lane​168.36270.95170
 OR 99 north – Cottage Grove		Northern end of concurrency with OR 99; northbound exit and southbound entrance
​172.23277.18172Sixth Street – Cottage Grove LakeSouthbound exit and northbound entrance
Cottage Grove174.73281.20174Cottage Grove, Dorena Lake
​176.75284.45176Saginaw
Creswell182.82294.22182OR 222 – Creswell
​186.42300.01186Dillard Road – GoshenNorthbound exit only
​188.33303.09188A
 OR 58 east (Willamette Highway) – Oakridge, Klamath Falls		Signed as Exit 188 southbound; OR 99 only appears on northbound signage; Klamath Falls only appears on southbound signage; southern end of concurrency with OR 99
​188.65303.60188B
 OR 99 south – Goshen
​189.64–
190.73		305.20–
306.95		189OR 225 / 30th Avenue – South Eugene
Springfield–Eugene line191.97308.95191
Glenwood Boulevard to OR 126 Bus. east – Downtown Springfield		OR 126 Bus. only appears on northbound signage
192.26309.41192


 OR 99 north / OR 126 Bus. west – University of Oregon, Downtown Eugene		Northern end of concurrency with OR 99; northbound exit and southbound entrance
192.74310.18Whilamut Passage Bridge over the Willamette River
193.71–
194.18		311.75–
312.50		194A
 OR 126 east – Springfield
194B

 I-105 west / OR 126 west – Eugene		Exit 4 on I-105
195.43–
195.70		314.51–
314.95		195ABeltline Road east – Springfield, Gateway MallSigned as Exit 195 southbound; Beltline Road east only appears on northbound signage; Springfield and Eugene only appears on southbound signage
195B
 OR 569 west (Randy Papé Beltline) – Springfield, Eugene, Florence, Eugene Airport
Coburg199.14320.48199Coburg National Historic District
Linn​209.05336.43209Harrisburg, Junction City
​216.56348.52216 OR 228 – Halsey, Brownsville
​228.08367.06228 OR 34 – Lebanon, Corvallis
Albany233.21375.32233 US 20 (Santiam Highway) – Albany, Lebanon, Sweet Home, Foster LakeAlbany only appears on northbound signage; Sweet Home only appears on southbound signage
233.85–
234.39		376.35–
377.21		234AKnox Butte Road – Fair/Expo CenterSigned as exit 234 northbound; no southbound entrance; southbound access via exit 233
Albany–Millersburg line234B
 OR 99E south – Albany		Southern end of concurrency with OR 99E; southbound exit and northbound entrance
Millersburg235.66379.26235ViewcrestNorthbound signage
MillersburgSouthbound signage
237.66382.48237ViewcrestNo northbound exit
​238.23383.39238OR 164 north – South Jefferson, Scio, MillersburgSouth Jefferson only appears on northbound signage; Millersburg only appears on southbound signage
​239.66385.70239Dever–Conner
Linn–Marion
county line		​240.65387.29Santiam River
Marion​242.12389.65242Talbot Road
​243.52391.91243Ankeny Hill
​244.67393.76244OR 164 south – North Jefferson, JeffersonNorth Jefferson only appears on northbound signage; Jefferson only appears on southbound signage
​248.40399.76248Delaney Road – Sunnyside, TurnerSunnyside only appears on northbound signage; Delaney Road only appears on southbound signage
Salem248.57400.03249Commercial StreetNorthbound exit and southbound entrance
251.52404.78252Kuebler Boulevard
253.86408.55253

 OR 22 / OR 99E Bus. north – Detroit Lake, Bend
256.27412.43256
 OR 213 north (Market Street) – Silverton, Lancaster Mall		Silverton only appears on northbound signage; Lancaster Mall only appears on southbound signage
258.62416.21258
 OR 99E north (Portland Road)		Northbound signage; northern end of concurrency with OR 99E
North Salem, Oregon State Fairgrounds, L. B. Day Comcast AmphitheatreSouthbound signage
259.96418.37260A

 OR 99E Bus. south (Salem Parkway)		Southbound exit and northbound entrance
260.21418.77260BChemawa Road – KeizerSigned as Exit 260 northbound; Chemawa Road only appears on northbound signage
​263.48424.03263Brooks, Gervais
Woodburn271.85437.50271

 OR 214 south / OR 219 north – Woodburn, Molalla, Silverton		Molalla only appears on northbound signage; Silverton only appears on southbound signage
​278.66448.46278Ehlen Road – Donald, Aurora National Historic DistrictDonald only appears on northbound signage; Ehlen Road only appears on southbound signage
Clackamas​282.24454.22282A
 OR 551 south – Canby, Hubbard		Southbound exit and northbound entrance
​282.59454.78282CanbyNorthbound signage
282BCharbonneau DistrictSouthbound signage
Wilsonville283.10455.61Boone Bridge over the Willamette River
283.87456.84283Wilsonville Road
Washington286.17460.55286OR 141 north (Boones Ferry Road) / Elligsen Road
Tualatin288.20–
288.97		463.81–
465.05		288
 I-205 north – Oregon City, West Linn		West Linn only appears on southbound signage
289.49465.89289Nyberg Street / Tualatin-Sherwood Road - Tualatin
290.47467.47290Lower Boones Ferry Road
Washington–Clackamas
county line		Tigard291.29468.79291Carman Drive
Tigard–Lake Oswego line292.19470.23292

 OR 217 north to US 26 – Tigard, Beaverton		Signed as Exit 292 southbound; 72nd Avenue, Tigard, and Beaverton only appear on northbound signage; Lake Oswego only appears on southbound signage
292Kruse Way, 72nd Avenue – Lake Oswego
WashingtonTigard292.90–
293.28		471.38–
471.99		293Haines Street
MultnomahPortland293.79472.81294Barbur BoulevardNorthbound signage
OR 99W – Tigard, NewbergSouthbound signage
295.03474.80295Capitol HighwayNo northbound exit
295.52475.59295Taylors Ferry RoadNorthbound exit only
296.30476.85296ABarbur BoulevardSouthbound exit and northbound entrance
296.68477.46296BMultnomah BoulevardSouthbound exit and northbound entrance
297.16478.23297Terwilliger BoulevardNo southbound entrance
298.74480.78298Corbett AvenueNorthbound exit only
299.16–
299.83		481.45–
482.53		299A

 OR 43 (Macadam Avenue) to US 26 east / Ross Island Bridge – Lake Oswego		US 26 and Ross Island Bridge only appear on northbound signage; Lake Oswego only appears on southbound signage
299.51–
300.27		482.01–
483.24		299B


 I-405 north to US 26 west – City Center, Beaverton		No exit number southbound; City Center only appears northbound; Beaverton only appears southbound
300.35–
300.45		483.37–
483.53		Marquam Bridge over the Willamette River
300.65–
301.91		483.85–
485.88		300
 I-84 / US 30 east – The Dalles, PDX		Northbound signage; access to OMSI and Central Eastside Industrial District
300B

 OR 99E to US 26 east – OMSI, Oregon City		Southbound signage; southbound exit and northbound entrance
301
 I-84 / US 30 east – The Dalles		Southbound signage; southern end of concurrency with US 30
302.08–
302.60		486.15–
486.99		302ABroadway / Weidler Street – Moda Center
302.73–
303.47		487.20–
488.39		302B

 I-405 south / US 30 west – St. Helens, Beaverton		Beaverton only appears on southbound signage; northern end of concurrency with US 30
303.15487.87302CGreeley Avenue – Swan IslandNorthbound exit and southbound entrance
303.75–
304.47		488.84–
490.00		303Killingsworth Street – Swan IslandNorthbound signage
Alberta Street – Swan IslandSouthbound signage
304.92490.72304Rosa Parks Way
305.43491.54305
 US 30 Byp. (Lombard Street)		Northbound exit and southbound entrance; signed as Exits 305A (east) and 305B (west)
305.91492.31306AColumbia BoulevardNorthbound exit and southbound entrance
306.44493.17306BVictory Boulevard – Expo CenterNo southbound exit
306.97494.02306

 To US 30 Byp. (Lombard Street) / Interstate Avenue - Portland International Raceway, Portland Meadows		Southbound exit and northbound entrance; former OR 99W south
307.33494.60307
 OR 99E south (Martin Luther King Jr. Boulevard) / OR 120 west (Marine Drive) – Delta Park		Delta Park only appears on northbound signage
North Portland Harbor307.45–
307.70		494.79–
495.20		North Portland Harbor Bridge
Hayden Island307.77–
307.99		495.31–
495.66		308Hayden Island, ODOT Permits
Columbia River308.17–
308.37		495.95–
496.27		Interstate Bridge

 I-5 north – Seattle		Continuation into Washington
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

References

  1. ↑ "Table 1: Main Routes of the Dwight D. Eisenhower National System Of Interstate and Defense Highways as of December 31, 2017". Federal Highway Administration. December 31, 2017. Archived from the original on July 3, 2017. Retrieved June 22, 2018.
  2. ↑ Official Route Numbering for the National System of Interstate and Defense Highways (Map). American Association of State Highway Officials, Public Roads Administration. August 14, 1957. Archived from the original on July 19, 2017. Retrieved April 14, 2013.
  3. ↑ Weingroff, Richard F. (Summer 1996). "Federal-Aid Highway Act of 1956, Creating the Interstate System". Public Roads. Vol. 60, no. 1. Washington, D.C.: Federal Highway Administration. ISSN 0033-3735. Archived from the original on March 7, 2012. Retrieved April 14, 2013.
  4. 1 2 3 Kramer, George (May 2004). The Interstate Highway System in Oregon: A Historic Overview (PDF) (Report). Oregon Department of Transportation. p. 1. Archived (PDF) from the original on August 30, 2021. Retrieved June 24, 2018 – via Oregon State Library.
  5. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 Oregon 2017–2019 Official State Map (PDF) (Map). Oregon Department of Transportation. March 2017. Archived (PDF) from the original on July 17, 2020. Retrieved June 24, 2018, with inset maps Archived April 3, 2018, at the Wayback Machine.
  6. ↑ Transportation Development Division (April 2001). Study of Eastern Oregon Freeway Alternatives, Pursuant to House Bill 3090 (PDF) (Report). Oregon Department of Transportation. p. 12. Archived (PDF) from the original on September 5, 2018. Retrieved September 4, 2018.
  7. ↑ "Functional Classification". Oregon Department of Transportation. Archived from the original on June 19, 2018. Retrieved June 24, 2018.
  8. ↑ National Highway System: Oregon (PDF) (Map). Federal Highway Administration. March 25, 2015. Archived (PDF) from the original on February 12, 2017. Retrieved June 24, 2018.
  9. 1 2 ODOT Transportation Data Section and Transportation Systems Monitoring Unit (November 2018). "2017 Transportation Volume Tables" (PDF). Oregon Department of Transportation. pp. 17–21, 31–33. Archived (PDF) from the original on December 4, 2018. Retrieved December 3, 2018.
  10. ↑ Bengel, Erick (January 11, 2016). "Highway becomes a memorial to veterans of recent wars". Daily Astorian. Archived from the original on September 10, 2018. Retrieved September 9, 2018.
  11. ↑ Miller, Mark (January 13, 2016). "Purple Heart Trail signage placed along Interstate 5 in Tualatin". Beaverton Valley Times. Archived from the original on September 2, 2022. Retrieved October 1, 2018.
  12. ↑ "Respect the Siskiyou Pass" (PDF). Oregon Department of Transportation. September 2005. Archived (PDF) from the original on March 21, 2018. Retrieved June 22, 2018.
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  31. 1 2 Anderson, Jennifer (April 19, 2007). "Stumptown Stumper". Portland Tribune. Archived from the original on July 10, 2018. Retrieved July 9, 2018.
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