Benicia-Martinez Bridge

Built to replace the ferries crossing the Carquinez Strait between Benicia and Martinez, the Benicia-Martinez Bridge is now a bustling span, and was the first of Northern California's bridges to feature an open road tolling system.

John Huseby

While it took a half-century of traffic growth to require a bridge to replace the ferries crossing the Carquinez Strait between Benicia and Martinez, it took only a couple of decades for ballooning traffic on Interstates 680 and 780 to overwhelm the Benicia-Martinez Bridge, also known as the George Miller Jr. Bridge.

To accommodate the growth, the Bay Area Transit Authority (BATA) and Caltrans completed a second, parallel span that carries five lanes of northbound traffic. The toll plaza on the bridge features Northern California's first open road tolling system, allowing FasTrak® customers to travel through the toll plaza at freeway speeds.

Seismic retrofit work on the Benicia-Martinez Bridge
Seismic Safety

In 2009, the original span of the Benicia-Martinez was seismically retrofitted, and then converted to carry four lanes of southbound traffic.

Bridge Facts At-A-Glance

Location: Interstate 680 between Solano and Contra Costa counties
Structure: Deck truss
Length: 1.2 miles
Vertical Clearance: 138 feet
Channel Span: 528 feet
Opened: September 1962 (widened in 1991, parallel structure in 2007)
  • Original Structure - $25 million
  • 2007 Parallel Structure- $1.2 billion
Auto Toll: $7
Carpools: $3.50
Collection: One-way, northbound in Martinez
Traffic Lanes: Three in southern direction, five in northern direction
FY 2020-21 Total Toll-Paid Vehicles: 17,753,585
FY 2020-21 Total Tolls Collected: $141,740,478
Bridge Path Counter Data: Access bicycle and pedestrian counter data
Did You Know?

The second span of the Benicia-Martinez Bridge is named in honor of Congressman George Miller, who is the son of late State Assemblymember and state Senator George Miller, Jr.

Regional Measure 1

Regional Measure 1, 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.