California State Route 84 west from Interstate 880 over the Dumbarton Bridge

On a recent Bay Area trip I took California State 84 west from Interstate 880 over San Francisco Bay via the Dumbarton Bridge.

The Dumbarton Bridge is a 1.63 mile structure crossing San Francisco Bay near Dumbarton Point. The Dumbarton Bridge is the southernmost bridge in San Francisco Bay and the shortest. The current Dumbarton Bridge was completed by 1982 in a four-lane configuration and was expanded to six-lanes by 1989.

The original Dumbarton Bridge opened in 1927 and was built private money. The 1927 Dumbarton Bridge was similar to the 1929 San Mateo-Hayward Bridge in that it featured a causeway structure and a center vertical lift span. Like the 1929 San Mateo-Hayward Bridge the 1927 Dumbarton Bridge was purchased by the California Division of Highways in 1951. The 1927 Dumbarton Bridge became part of Legislative Route 107 which already existed on both ends of the structure since 1933. Said change to LRN 107 can be observed by comparing the 1951 State Highway Map to the 1952 edition.

1951 State Highway Map

1952 State Highway Map

LRN 107 and the 1927 Dumbarton Bridge would become part of CA 84 during the California Highway Renumbering of 1964.

1963 State Highway Map

1964 State Highway Map

The 1927 Dumbarton Bridge was mostly demolished in 1984 but a small portion of the eastern approach near in Newark exists as a fishing pier.

My approach to CA 84 west and the Dumbarton Bridge were from I-880 south.

CA 84 west enters the City Limits of Newark (Alameda County) west of I-880. CA 84 west to the Dumbarton Bridge toll is a freeway grade signed at 65 MPH.

Heading west on CA 84 it is apparent some of the overhead signage has seen better days.

Tolls for the Dumbarton Bridge are collected on westbound CA 84 and are $6 dollars cash for a two axle vehicle. The last Exit before the Dumbarton Bridge toll is at Thorton Avenue/Paseo Padre Parkway.

West of the Dumbarton Bridge toll the route of CA 84 largely falls below freeway standards and has a poor surface quality. The speed limit over the Dumbarton Bridge is 55 MPH.

As the Dumbarton Bridge rises over San Francisco Bay it enters San Mateo County and Menlo Park.

The Dumbarton Bridge ends in Menlo Park. CA 84 continues west over the San Cruz Mountains to CA 1 on the Pacific Ocean. After crossing the Dumbarton Bridge I turned south on CA 109 on University Avenue.

Comments

Former US Route 50 and the Pioneer Route Lincoln Highway on Johnson's Pass Road

Johnson's Pass Road is one of the oldest highway corridors in California. Johnson's Pass was part of the Lake Tahoe Wagon Road as it was completed during 1856 over the Sierra Nevada. The pass would later be incorporated into the Pioneer Branch of the Lincoln Highway in 1913 and US Route 50 in 1926. Johnson's Pass Road would be bypassed by a new alignment of US Route 50 over Echo Summit in 1938. A replacement of the Meyers Grade east of Johnson's Pass would be opened to traffic in 1947. Johnson's Pass Road remains accessible to traffic and is still signed by the Lincoln Highway Association. Pictured as the blog cover is the view from the top of Johnson's Pass Road overlooking modern US Route 50 and Lake Tahoe. Part 1; the history of Johnson's Pass Much of the history of what become the Lake Tahoe Wagon Road is discussed in the September 1950 California Highways & Public Works during its Centennial Edition. The or...

Abandoned US Route 40 in the Truckee River Canyon

Within the Truckee River Canyon in the Sierra Nevada range numerous abandoned portions of US Route 40 can be found alongside modern Interstate 80. This segment of highway was opened during 1926 as a bypass of the Dog Valley Grade which carried the early North Lincoln Highway and Victory Highway. The corridor of the Truckee River Canyon State Highway would be assigned as US Route 40 when the US Route System was commissioned during November 1926. During 1958 the segment of Interstate 80 between Boca, California and the Nevada state line was complete. When Interstate 80 opened east of Boca numerous obsolete portions of US Route 40 were abandoned. Some of these abandoned segments have been incorporated into the Tahoe-Pyramid Trail. Part 1; the history of US Route 40 in the Truckee River Canyon The Truckee River Canyon for centuries has been an established corridor of travel known to native tribes crossing the Sierra Nevada range. The first documented wagon crossi...

Former US Route 50 and the South Lincoln Highway from Folsom east to Placerville

The corridor of Folsom of Sacramento County east to Placerville of El Dorado County has been a long established corridor of overland travel dating back to the California Gold Rush. The Folsom-Placerville corridor was once part of the path of the Lake Tahoe Wagon Road which became the first California State Highway and later the South Lincoln Highway. In time the South Lincoln Highway's surface alignment was inherited by US Route 50. The Folsom-Placerville corridor also includes the communities of; Clarksville, Shingle Springs and El Dorado. Part 1; the history of the Lake Tahoe Wagon Road, South Lincoln Highway and US Route 50 through Folsom-Placerville Folsom is located on the American River/Lake Natoma of eastern Sacramento County. That lands now occupied by the City of Folsom were part of Rancho Rio de los Americanos prior to the finding of gold at Sutter's Mill during 1848. During the California Gold Rush the lands of Rancho Rio de los Americanos were p...

Gribblenation

Search This Blog