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

Yes, the color of your nearby fire hydrant matters...

...and here's why. You will find White, Red, Yellow and Violet colored fire hydrants pretty much everywhere.  But there's a reason for this - and it's because of the National Fire Protection Association (NFPA).  This association has issued guidelines for color coding standards for fire hydrants.  These color codes from the body of the hydrant, top of the hydrant, and in some municipalities the outlet caps are designed to allow fire fighters to know what type of system, water flow rate (Gallons Per Minute or GPM), and level of water pressure.  This guideline is known as NFPA 291 and is intended to be used universally throughout the United States. The NFPA guidelines are specific to the body and the top cap of the hydrant.  If a hydrant is WHITE or YELLOW - it means that it is connected to a public/municipal water system.  If a hydrant is RED - the hydrant is connected to a private system, typically a well.  These are most common in rural or unincorporated areas

Legend of the Ridge Route; a history of crossing the mountains between the Los Angeles Basin and San Joaquin Valley from wagon trails to Interstates

Over the past two decades I've crossed the Interstate 5 corridor from Los Angeles north over the Sierra Pelona Mountains and Tehachapi Range to San Joaquin Valley what seems to be an immeasurable number of times.  While Interstate 5 from Castaic Junction to Grapevine via Tejon Pass today is known to most as "The Grapevine" it occupies a corridor which has been traversed by numerous historic highways.  The most notable of these highways is known as the "Ridge Route."  This article is dedicated to the Ridge Route and the various highways that preceded it.  This blog is part of the larger Gribblenation US Route 99 Page.  For more information pertaining to the other various segments of US Route 99 and it's three-digit child routes check out the link the below. Gribblenation US Route 99 Page Ridge Route corridor introdution The Ridge Route as originally envisioned was a segment of highway which was completed in 1915 between the northern Los Angeles city limit

Establishing the numbering conventions of California's chargeable Interstates

The Federal Highway Aid Act of 1956 brought the Interstate Highway System into existence which would largely be constructed by Federal Highway Administration fund matching.  The Interstate Highway System was deliberately numbered to run opposite the established conventions of the US Route System.  While the Interstate Highway numbering conventions are now well established there was a period during the late 1950s where they were still being finalized.  This blog examines the history of the establishing of the chargeable Interstate Highway route numbers in California.  The above blog cover depicts the Interstate Highway route numbers requested by the Division of Highways in the Los Angeles area during November 1957.  The establishment of the numbering conventions of California's chargeable Interstates The Interstate Highway System was not created in a vacuum by way of the passage of the 1956 Federal Highway Aid Act.  The beginning of the Interstate Highway System can be found in the