California State Route 45

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"CA 45" redirects here. For the congressional district, see California's 45th congressional district.

State Route 45 marker

State Route 45
Route information
Defined by Streets and Highways Code § 345
Maintained by Caltrans
Length: 70 mi[1] (113 km)
Existed: 1934 – present
Major junctions
South end: SR 113 at Knights Landing
  SR 20 in Colusa
SR 162 at Glenn
North end: SR 32 at Hamilton City
Highway system
SR 44 SR 46

State Route 45 (SR 45) is a state highway in the U.S. State of California that travels in a north–south direction from Route 113 in Knights Landing to Route 32 in Hamilton City.

Route description[edit]

This route is part of the California Freeway and Expressway System.[2]

The route begins at SR 113 in Knights Landing in Yolo County. It then heads northward and enters Colusa County, where it has a short overlap with SR 20. It then enters Glenn County, where it overlaps SR 162 through the cities of Codora and Glenn. It the continues northward to its end at SR 32 in Hamilton City.

Major intersections[edit]

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 an overlap due to a correction or change, and T indicates postmiles classified as temporary (for a full list of prefixes, see the list of postmile definitions).[3] Segments that remain unconstructed or have been relinquished to local control may be omitted. The numbers reset at county lines; the start and end postmiles in each county are given in the county column.

County Location Postmile
Destinations Notes
YOL 0.00-12.92
Knights Landing 0.00 4th Street Continuation beyond SR 113
0.00 SR 113 (Locust Street) – Robbins, Yuba City, Woodland South end of SR 45
  5.80 CR E11 (Road 98A)
COL 0.00-34.18
36.79[N 1]
SR 20 east – Meridian, Yuba City South end of SR 20 overlap
Colusa 31.09[N 1]
SR 20 west (10th Street) – Williams, Clearlake North end of SR 20 overlap
  24.53 I-5 (CA).svg Maxwell Road to I-5Maxwell
GLE 0.00-23.23
Codora 3.06 SR 162 east / Road 61 – Butte City, Oroville South end of SR 162 overlap
Glenn 7.53 SR 162 west – Willows North end of SR 162 overlap
Hamilton City 23.23 SR 32 (6th Street) – Chico, Orland North end of SR 45
23.23 Canal Street (Road 203) Continuation beyond SR 32
1.000 mi = 1.609 km; 1.000 km = 0.621 mi
  1. ^ a b Indicates that the postmile represents the distance along SR 20 rather than SR 45.

External links[edit]

Route map: Bing / Google


  1. ^ January 1, 2006 California Log of Bridges on State Highways
  2. ^ CA Codes (shc:250-257)
  3. ^ a b 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. 
  4. ^ California Department of Transportation, Log of Bridges on State Highways, July 2007
  5. ^ California Department of Transportation, All Traffic Volumes on CSHS, 2007