San Mateo-Hayward Bridge

Efforts to widen the San Mateo-Hayward Bridge have significantly improved evening commutes on State Route 92 between San Mateo and Alameda counties.

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Once one of the busiest evening commutes in the Bay Area, the San Mateo-Hayward Bridge saw enormous improvements in traffic flow with the completion of the bridge’s widening in January 2003.

Funded as part of the Bay Area Transit Authority’s (BATA) Regional Measure 1 (RM1) program, the low-rise trestle portion of the bridge was widened from four to six lanes to match the configuration of the high-rise portion of the bridge.

As part of the effort to improve traffic flow and to relieve congestion on the bridge and the roads that lead to it, the RM1-funded Interstate 880/State Route 92 interchange in Hayward was completed in October 2011.

Safety on the San Mateo-Hayward bridge has been improved with the addition of full shoulders along both low-rise trestles providing a better space for disabled vehicles.

A toll plaza at dusk
Bridge Tolls

Find information about bridge tolls and more.

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Seismic retrofit work on the San Mateo-Hayward Bridge
Seismic Safety

The seismic safety of the bridge was increased by Caltrans’ completion of its bridge retrofit project in 2000.

Bridge Facts At-A-Glance

LOCATION: State Route 92 between San Mateo and Alameda counties
STRUCTURE: Steel box girder and concrete trestle approach spans
LENGTH: Highrise steel girder spans 1.9 miles, lowrise trestle portion 5.1 miles
VERTICAL CLEARANCE: 135 feet
CHANNEL SPAN: 750 feet
OPENED: October 1967, widened 2003
COST:
  • Original structure: $70 million
  • Widened structure: $200 million
AUTO TOLL: $6
CARPOOLS: $3
COLLECTION: One way, westbound in Hayward
TRAFFIC LANES: Three in each direction
FY 2018-19 TOTAL TOLL-PAID VEHICLES: 19,732,168
FY 2018-19 TOTAL TOLLS COLLECTED: $105,140,985
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.