Bay Area Toll Authority


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San Francisco-Oakland Bay Bridge

Above: a live image of the new East Span in operation and the old East Span demolition.


LOCATION: Interstate 80, between San Francisco and Alameda counties

STRUCTURE: Suspension, tunnel, skyway

LENGTH: 8.4 miles (including approaches and toll plaza)


CHANNEL SPAN: 1,400 feet


  • Original Structure: November 1936
  • New Structure (Just the Eastern Span): September 2013


  • 1936 Structure: $77 million (including the Transbay Transit Terminal)
  • 2013 Structure (Just the Eastern Span): $6.4 billion

AUTO TOLL: Varies (see below)

Weekday Peak Autos:
Weekday Peak Carpools: $2.50
Weekday Non-Peak Autos: $4.00
Weekends: $5.00

COLLECTION: One way, westbound, in Oakland

TRAFFIC LANES: Five lanes in each direction

FY 2014-15 TOTAL TOLL-PAID VEHICLES: 45,534,437

FY 2014-15 TOTAL TOLLS COLLECTED: $228,421,028

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 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.

Seismic retrofit of the western span of the bridge was completed in 2004. The original eastern span, damaged in the 1989 Loma Prieta earthquake and subsequently repaired, was replaced on September 2, 2013.

The design of the new east span — selected by the Bay Area Toll Authority in 1998 — 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.

See also: