State Route 151
Click here for a key to the symbols used. An explanation of acronyms may be found at the bottom of the page.
From Shasta Dam to Route 5 near the City of Shasta Lake..
Post 1964 Signage History
In 1964 Toyon (one of the company towns established during the
construction of Shasta Dam) disbanded and was turned over to the Job
Corps. In 1993 the communities of Central Valley, Pine Grove,
Project City, and Summit City consolidated into the incorporated City of
In 2010, SB 1318, Chapter 421, 9/29/10, changed the terminus of the
definition to "Route 5 ."
Pre 1964 Signage History
This route was first defined in 1939; it was not formally assigned a
legislative route number until 1943. It was not signed before 1964.
Route 151 was not defined as part of the initial state signage of routes
The highway was added to accommodate heavy truck traffic to Shasta Dam,
and first appears as LRN 209 on the 1940 Division of Highways Map.
LRN 209 would not be formalized as a Legislative Route until 1943
Legislative Chapter 964. Note; the 1940 Division of Highways Map
shows LRN 209 ending at the site of Shasta Dam but the road continuing to
the site of Kennett on the Sacramento River.
(Source: Gribblenation Blog, "California State Route 151", September 2020)
The Gribblenation Blog "California State Route 151" provides a detailed history of Shasta Dam.
It is unclear what (if any) route was signed as Route 151 between 1934
[SHC 263.1] Entire route.
Other WWW Links
Overall statistics for Route 151:
- Total Length (1995): 7 miles
- Average Daily Traffic (1992): 310 to 12,600
- Mileage Classification: Rural: 0; Sm. Urban: 0; Urbanized: 7.
- Previous Federal Aid Mileage: FAU: 7 mi.
- Functional Classification: Minor Arterial: 7 mi.
- Counties Traversed: Shasta.
Pre-1964 Legislative Route
In 1933, Chapter 767 defined the route from "[LRN 2] near Rincon to [LRN 79] near Santa Paula" as part of the highway system. In 1935, this route
was added to the highway code as LRN 151 with that definition. The
definition remained unchanged until the 1963 renumbering.
The route ran from US 101 near Rincon (roughly Rincon Beach Park, just
below Carpinteria) to Route 126 near Santa Paula. This is present-day
Acronyms and Explanations:
- "LRN" refers to the Pre-1964 Legislative Route Number.
"US" refers to a US Shield signed route.
"I" refers to an Eisenhower Interstate signed route.
"Route" usually indicates a state shield signed route, but said route may be signed as US or I.
- Previous Federal Aid (pre-1992) categories:
Federal Aid Interstate (FAI); Federal Aid Primary (FAP);
Federal Aid Urban (FAU); and Federal Aid Secondary (FAS).
Current Functional Classifications (used for aid purposes):
Principal Arterial (PA); Minor Arterial (MA);
Collector (Col); Rural Minor Collector/Local Road (RMC/LR). Note that ISTEA repealed the previous Federal-Aid System, effective in 1992, and established the functional classification system for all public roads.
- Other frequently used terms: California Transportation Commission (Commission or CTC), California Department of Transportation (Department or Caltrans), Regional Improvement Program (RIP), Interregional Improvement Program (IIP), State Transportation Improvement Program (STIP), State Highway Operation and Protection Program (SHOPP), Traffic Congestion Relief Program (TCRP), Clean Air and Transportation Improvement Act of 1990 (Proposition 116), High Speed Passenger Train Bond Program (Proposition 1A), Highway Safety, Traffic Reduction, Air Quality, and Port Security Bond Act of 2006 (Proposition 1B), Corridor Mobility Improvement Account (CMIA), State Route 99 Bond Program (RTE or SR 99), Local Bridge Seismic Retrofit Account (LBSRA), Trade Corridors Improvement Fund (TCIF), Highway-Railroad Crossing Safety Account (HRCSA), State-Local Partnership Program (SLPP), Environmental Phase (PA&ED), Design Phase (PS&E), Right of Way (R/W), Fiscal Year (FY), Active Transportation Program (ATP), Trade Corridor Enhancement Program (TCEP), Local Partnership Program (LPP), Local Streets and Roads Program (LSRP), Solutions for Congested Corridors Program (SCCP).
© 1996-2020 Daniel P. Faigin.
Maintained by: Daniel P. Faigin