Skip to main content

California State Route 131

A couple years ago I drove a brief segment of California State Route 131 on Tiburon Boulevard.


CA 131 is a 4 mile east/west State Highway entirely contained within Marin County.  CA 131 begins at US 101 Exit 447 and is aligned entirely on Tiburon Boulevard east into the town of Tiburon where it ends at Point Tiburon.  From Point Tiburon there is connecting pedestrian ferry routes to San Francisco and Angel Island.

CA 131 is a post-1964 Highway Renumbering for what was Legislative Route Number 52.  LRN 52 was added to the State Highway System in 1919 during the Third State Highway Bond Act according go CAhighways.org.

CAhighways.org on CA 131

LRN 52 was likely created to take advantage of the ferry route in Tiburon as an alternate to LRN 1 which departed from Sausalito Point.  Tiburon became an important ferry landing when the San Francisco and San Rafael Railroad was built as an extension of the San Francisco and North Pacific Railroad from San Rafael.   The San Francisco and North Pacific Railroad can be seen at it's height on this 1893 map of San Francisco Bay.

1893 Railroad Map of San Francisco Bay

The San Francisco and Northern Pacific Railroad was reformed as the California Northwest Railroad Company by 1898.  By 1907 the California Northwest Railroad had been absorbed into the Northwest Pacific Railroad by 1907.  Passenger rail service over the ferry landing in Tiburon ended in 1941.  Passenger service over the Tiburon ferry landing resumed in the 1960s but all rail service, including freight shuttered in 1967.  The rails in Tiburon were removed during the 1970s but the grade of the San Francisco and San Rafael Railroad was eventually recycled into the present pedestrian pathway running along CA 131 today.

LRN 52 first appears on the 1920 State Highway as a 1919 special appropriations road.

1920 State Highway Map 

According to AAroads the route LRN 52 apparently once took San Rafael Avenue through Belvedere before entering Tiburon.  The modern alignment of Tiburon Boulevard seems to have been constructed by 1930.

AAroads on CA 131

LRN 52 appears on the 1935 California Division of Highways Map of Marin County running interestingly from Campo Alto eastward on Blithedale Avenue to US 101/LRN 1.  From US 101/LRN 1 the route of LRN 52 is shown following Tiburon Boulevard east to the ferry landing at Point Tiburon. 

1935 Marin County Highway Map 

According to CAhighways.org the definition of LRN 52 was truncated from Campo Alto in 1947.  This can be seen by comparing the 1946 State Highway Map to the 1948 edition .

1946 State Highway Map City Insert

1948 State Highway Map City Insert

As noted above LRN 52 was assigned CA 131 during the 1964 State Highway Renumbering.  The change from LRN 52 to CA 131 can be seen by comparing the 1963 State Highway Map to the 1964 edition.

1963 State Highway Map City Insert

1964 State Highway Map City Insert

CA 131 doesn't appear as a signed highway until the 1969 State Highway Map.

1969 State Highway Map City Insert

Of note; according to AAroads above there was once a proposal to build a bridge to San Francisco via Point Tiburon and Angel Island to San Francisco.  These plans seem to have been effectively blocked when Angel Island became a State Park in 1955.  There used to be a link to the history of the bridge project but the link AAroads used has run dead.

A link to the unbuilt bridge from 1962 connecting Tiburon to San Francisco can be found on the link below.  The structure was known as the Marin-San Francisco Crossing.

1962 Draft of the Marin-San Francisco Crossing

Comments

Popular posts from this blog

California State Route 232

This past month I drove the entirety of California State Route 232 in Ventura County. CA 232 is an approximately 4 miles State Highway aligned on Vineland Avenye which begins near Saticoy at CA 118 and traverses southwest to US Route 101 in Oxnard.  The alignment of CA 232 was first adopted into the State Highway System in 1933 as Legislative Route Number 154 according to CAhighways.org. CAhighways.org on LRN 154 As originally defined LRN 154 was aligned from LRN 9 (future CA 118) southwest to LRN 2/US 101 in El Rio.  This configuration of LRN 154 between CA 118/LRN 9 and US 101/LRN 2 can be seen on the 1935 California Division of Highways Map of Ventura County. 1935 Ventura County Highway Map According to CAhighways.org the route of LRN 154 was extended west from US 101/LRN 2 to US 101A/LRN 60 in 1951.  Unfortunately State Highway Maps do not show this extension due to it being extremely small. During the 1964 State Highway Renumbering LRN 154 was assigned CA 232.  Of n

Former US Route 101 and California State Route 1 in San Luis Obispo

Originally US Route 101 upon descending Cuesta Pass southbound entered the City of San Luis Obispo via Monterey Street.  From Monterey Street US Route 101 utilized Santa Rosa Street and Higuera Street southbound through downtown San Luis Obispo.  Upon departing downtown San Luis Obispo US Route 101 would have stayed on Higuera Street southward towards Pismo Beach and Arroyo Grande.  Notably; beginning in 1934 US Route 101 picked up California State Route 1 at the intersection of Monterey Street/Santa Rosa Street where the two would multiplex to Pismo Beach.  Pictured below is the 1 935 Division of Highways Map of San Luis Obispo County depicting the original alignments of US Route 101 and California State Route 1 in the City of San Luis Obispo.   Part 1; the history of US Route 1 and California State Route 1 in San Luis Obispo San Luis Obispo lies at the bottom of the Cuesta Pass (also known as the Cuesta Grade) which has made it favored corridor of travel for centuries.  Cuesta Pass

Former California State Route 1 over Old Pedro Mountain Road

California State Route 1 in western San Mateo County traverses the Montara Mountain spur of the Santa Cruz Mountains.  In modern times California State Route 1 passes through Montara Mountain via the Tom Lantos Tunnels and the highway is traditionally associated with Devils Slide.  Although Devils Slide carries an infamous legacy due it being prone landslides it pales in comparison to the alignment California State Route 1 carried prior to November 1937 over Old Pedro Mountain Road.   Old Pedro Mountain Road opened to traffic in 1915 and is considered one of the first major asphalted highways in California.  Old Pedro Mountain Road clambers over a grade from Montara towards Pacifica via the 922 foot high Saddle Pass.  Pictured above an overlook of Old Pedro Mountain Road facing southward towards Montara as it appears today.  Pictured below it the same view during June 1937 when it was part of the original alignment of California State Route 1.  Today Old Pedro Mountain sits abandoned a