State Route 253
Click here for a key to the symbols used. An explanation of acronyms may be found at the bottom of the page.
From Route 128 near Boonville to Route 101 near Ukiah.
Post 1964 Signage History
This route was added in 1963 by Chapter 2155 as “Route 128 near
Boonville to Route 101 near Ukiah.”.
There were plans for a new alignment for Route 253 running north of the
existing Ukiah-Boonville Road when it was added in 1963, but when the
improvements to the Ukiah-Boonville road were completed, that road was
(Source: Gribblenation Blog (Tom Fearer): California State Route 253, March 2021)
Pre 1964 Signage History
This route was not part of the state highway system before 1963. This is
The route started its existence as the Anderson Valley Trail in 1851. In
1868, John Gschwind got a bill through the legislature authorizing the
Mendocino County Supervisors to grant the right to construct a toll road
over the Anderson Valley Trail Route from Boonville to a point where the
Anderson Valley Trail intersected the state route in Ukiah Valley. It
continued as a toll road, primarily transporting lumber, until the late
1800's and was adopted into the Mendocino County system in 1896. A
contract was let in 1896 for a 10' width roadbed and a 35' minimum radius
curve by the Mendocino County Supervisors. The road continued on
essentially the original location with minor improvements until 1952.
Mendocino County began improvements to the route in 1953 under the Federal
Aid Secondary program. It was added to the state highway system in 1963,
upon completion of the final improvement contract.
(Source: CHPW, July/August 1966)
In August 2011, the CTC approved $1.54 million to repair two slipouts
near Boonville, from 4.1 to 4.3 miles east of Soda Creek Bridge, that
occurred in the winter of 2005-2006 and to build a retaining wall.
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Overall statistics for Route 253:
- Total Length (1995): 17 miles
- Average Daily Traffic (1992): 1,600 to 2,300
- Mileage Classification: Rural: 17; Sm. Urban: 0; Urbanized: 0.
- Previous Federal Aid Mileage: FAP: 17 mi.
- Functional Classification: Minor Arterial: 17 mi.
- Counties Traversed: Mendocino.
Pre-1964 Legislative Route
In 1959, Chapter 1062 defined LRN 253 as:
- [LRN 68] near the south city limits of San Francisco to [LRN 224] near
the San Francisco-Oakland Bay Bridge
- [LRN 68] near Alemany Boulevard to the route described in subdivision
(a) of this section.
In 1959, Chapter 1841 added the condition “Construction on either
portion of [LRN 253] described in subdivisions (a) and (b) may be
commenced when the City and County of San Francisco has acquired all
rights of way necessary for the construction of such portion and has
conveyed these rights of way to the State of California for highway
In 1961, Chapter 1010 reworded the construction amendment:
“Notwithstanding the provision of Section 89 of Chapter 1062 of the
Statutes of 1959, construction of any or all portions of [LRN 253] may be
commenced at any time, if the City and County of San Francisco has has
conveyed or does convey to the State of California, without charge, all
real property presently acquired by it for the construction of such route
or portion thereof.”
This route was signed as follows:
- From LRN 68 (Route 1) near the S city limits of San Francisco to LRN 224 (former Route 480) near the San Francisco-Oakland Bay Bridge.
This is the I-280 "Southern Freeway" through San Francisco. At times
it was considered an extension of the Embarcadero Freeway (Route 480)
- From LRN 68 (Route 1) near Alemany Boulevard to the route described in
This is also part of I-280.
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