State Route 147
Click here for a key to the symbols used. An explanation of acronyms may be found at the bottom of the page.
From Route 89 near Canyon Dam to
Route 36 near Westwood.
Post 1964 Signage History
The definition of this route is unchanged from 1963.
Pre 1964 Signage History
This was LRN 183, defined in 1961. This route was not signed before 1963.
Signed Route 147 was not defined as part of the initial state signage of
routes in 1934. It is unclear what (if any) route was signed as Route 147
between 1934 and 1964.
Hamilton Branch Bridge (~ PLU
In October 2015, the CTC approved for future consideration
of funding a project that will replace the Hamilton Branch Bridge on Route 147 near the community of Clear Creek. The project is programmed in the
2014 State Highway Operation and Protection Program. The total estimated
cost is $13,492,000 for capital and support. Construction is estimated to
begin in Fiscal Year 2016/17. The scope, as described for the preferred
alternative, is consistent with the project scope programmed by the
Commission in the 2014 State Highway Operation and Protection Program. A
copy of the Negative Declaration has been provided to Commission staff.
The project will result in less than significant impacts to the
environment after mitigation.
In January 2016, the CTC approved SHOPP funding in
Plumas County, on Route 147 near Canyon Dam, from 0.1 mile south to 0.4
mile north of Hamilton Branch Bridge No. 09-0065. Outcome/Output: Replace
bridge on same alignment. $6,610,000.
In June 2018, Caltrans District 2 tweeted that "The new
Hamilton Branch Bridge on SR 147 is almost complete." and that work was
being done to improve the connecting pavement.
(Source: @CaltransD2 6/5/2018)
Other WWW Links
Overall statistics for Route 147:
- Total Length (1995): 12 miles
- Average Daily Traffic (1992): 830 to 2,000
- Mileage Classification: Rural: 12; Sm. Urban: 0; Urbanized: 0.
- Previous Federal Aid Mileage: FAP: 12 mi.
- Functional Classification: Minor Arterial: 12 mi.
- Counties Traversed: Plumas, Lassen.
Pre-1964 Legislative Route
In 1933, Chapter 767 defined the route from "[LRN 2] near Arroyo Grande
to [LRN 2] near San Luis Obispo" as part of the state highway system. In
1935, LRN 147 was added to the highway code with the definition. The route
remained unchanged until 1963. It ran from US 101 near Arroyo Grande to US 101 near San Luis Obispo, and is present-day Route 227.
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