State Route 172 marker

State Route 172

Map of Tehama County in northern California with SR 172 highlighted in red
Route information
Maintained by Caltrans
Length8.917 mi[1] (14.351 km)
RestrictionsSegment between Mineral and Mill Creek is typically closed in winter.
Major junctions
West end SR 36 at Mineral
East end SR 36 / SR 89 at Morgan Springs
Location
CountryUnited States
StateCalifornia
CountiesTehama
Highway system
← SR 170→ SR 173

State Route 172 (SR 172) is a state highway in the U.S. state of California in Tehama County. It is a loop route off of State Route 36 that serves the Mill Creek area of Lassen National Forest.

Route description

SR 172 begins at a junction with SR 36 in Mineral and heads southeast through Lassen National Forest. The route then turns south, crossing the South Fork Battle Creek and entering a wooded area. The road then winds eastward through the forest, roughly parallel to Mill Creek. SR 172 then turns northward along Mill Creek and heads back toward SR 36 in Morgan Springs, its eastern terminus.[2]

The segment between Mineral and Mill Creek is not plowed during the winter and thus is typically closed during snowy conditions.[3][4]

SR 172 is not part of the National Highway System,[5] a network of highways that are considered essential to the country's economy, defense, and mobility by the Federal Highway Administration.[6]

Major intersections

Except where prefixed with a letter, postmiles were measured on the road as it was in 1964, based on the alignment that existed at the time, and do not necessarily reflect current mileage. R reflects a realignment in the route since then, M indicates a second realignment, L refers to an overlap due to a correction or change, and T indicates postmiles classified as temporary (for a full list of prefixes, see California postmile § Official postmile definitions).[1] Segments that remain unconstructed or have been relinquished to local control may be omitted. The entire route is in Tehama County.

LocationPostmile
[1][7][8]		DestinationsNotes
Mineral0.00 SR 36 – Chester, SusanvilleWest end of SR 172
​​Segment between Mineral and Mill Creek typically closes in winter
Morgan Springs8.92 SR 36 / SR 89 – Red Bluff, SusanvilleEast end of SR 172
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

See also

References

  1. 1 2 3 California Department of Transportation. "State Truck Route List". Sacramento: California Department of Transportation. Archived from the original (XLS file) on June 30, 2015. Retrieved June 30, 2015.
  2. ↑ Microsoft; Nokia (February 12, 2011). "SR 172" (Map). Bing Maps. Microsoft. Retrieved February 12, 2011.
  3. ↑ ""Snow not removed beyond here" sign along eastbound SR 172 in Mineral". Google Street View. January 2009. Retrieved February 4, 2023.
  4. ↑ ""Snow not removed beyond here" sign along westbound SR 172 west of Mill Creek". Google Street View. January 2009. Retrieved February 4, 2023.
  5. ↑ Federal Highway Administration (March 25, 2015). National Highway System: California (North) (PDF) (Map). Scale not given. Washington, DC: Federal Highway Administration. Retrieved September 17, 2017.
  6. ↑ Natzke, Stefan; Neathery, Mike & Adderly, Kevin (June 20, 2012). "What is the National Highway System?". National Highway System. Washington, DC: Federal Highway Administration. Retrieved July 1, 2012.
  7. ↑ California Department of Transportation (July 2007). "Log of Bridges on State Highways". Sacramento: California Department of Transportation.
  8. ↑ California Department of Transportation, All Traffic Volumes on CSHS, 2005 and 2006
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