San Francisco-Oakland Bay Bridge

The San Francisco-Oakland Bay Bridge is the region's workhorse bridge, carrying more than a third of the traffic of all of the state-owned bridges combined. It is also a jewel along the San Francisco waterfront.

The San Francisco-Oakland Bay Bridge is made up of two bridge segments: a skyway structure/single anchored suspension bridge between Oakland and Yerba Buena Island, and a suspension span from the island to San Francisco. Connecting the two is the largest diameter bore tunnel in the world.

The design of the new East Span — which opened in September 2013 — features a single-tower, self-anchored suspension bridge for the segment of the bridge that crosses the shipping channel, and a skyway structure over the shallower waters close to the Oakland shore.

Restricted Bicycle/Pedestrian Access to Treasure Island

Due to unforeseen construction conditions encountered during construction of the new bicycle path on Yerba Buena Island as part of the Southgate Road Realignment Project there will be no bicycle or pedestrian access between Yerba Buena Island and Treasure Island until Mid-November 2021. This means no access on weekdays, weekends and holidays through mid-November 2021.

Get the details at 511.org.

The Bay Bridge in background with dismantled San Francisco-Oakland Bay Bridge in foreground

Seismic Safety

Seismic retrofit of the West Span of the San Francisco-Oakland Bay Bridge was completed in 2004. The original East Span was damaged in the 1989 Loma Prieta earthquake and subsequently repaired. The replacement East Span opened on September 2, 2013.

Bikes & Pedestrians

How many bikes and pedestrians have used the San Francisco-Oakland Bay Bridge path since November 2016? What times of day do most bikes and pedestrians travel the path?

See the data.

Bridge Tolls

Find information about bridge tolls and more.

Visit 511.org.

View of the West Span San Francisco – Oakland Bay Bridge from Embarcadero pier

Bay Lights

Bay Lights is a sculpture made of 25,000 LEDs designed by artist Leo Villareal. Unveiled in 2013 to commemorate the 75th anniversary of the Bay Bridge, the installation dazzles the San Francisco waterfront.

Bridge Facts At-A-Glance

LOCATION:	Interstate 80, between San Francisco and Alameda counties
STRUCTURE:	Suspension, tunnel, skyway
LENGTH:	8.4 miles (including approaches and toll plaza)
VERTICAL CLEARANCE:	220 feet
CHANNEL SPAN:	1,400 feet
OPENED:	Original Structure: November 1936 New Structure (Just the Eastern Span): September 2013
COST:	1936 Structure: $77 million (including the Transbay Transit Terminal) 2013 Structure (Just the Eastern Span): $6.4 billion
AUTO TOLL:	Weekday Peak Autos: $7 Weekday Peak Carpools: $3 Weekday Non-Peak Autos: $5 Weekends: $6
COLLECTION:	One way, westbound, in Oakland
TRAFFIC LANES:	Five lanes in each direction
FY 2018-19 TOTAL TOLL-PAID VEHICLES:	45,760,984
FY 2018-19 TOTAL TOLLS COLLECTED:	$241,641,856
BRIDGE PATH COUNTER DATA:	Access bicycle and pedestrian counter data

Monthly Transportation Statistics

See vehicle traffic and public transit ridership numbers from 2019 to the present.

Get the data.

Regional Measure 1

This regional measure, approved by Bay Area voters in 1988, raised tolls on the Bay Area’s seven state-owned toll bridges to fund bridge improvements and parkway construction.

Bay Bridge East Span Path

The Bay Bridge Trail carries bicyclists and pedestrians across the majestic East Span, connecting the Oakland shoreline with Yerba Buena Island.

Bay Bridge Metering Lights Upgrade

The Bay Area Toll Authority (BATA) and Caltrans are upgrading the metering lights at the San Francisco-Oakland Bay Bridge toll plaza to a more automated and adaptive system.