The San Mateo-Hayward Bridge on State Route 92 crosses the Bay between San Mateo and Hayward in Alameda County. There is no bicycle or pedestrian access on this bridge. All tolls are collected electronically in the westbound direction.

The San Francisco-Oakland Bay Bridge, on I-80, links San Francisco and Oakland. It consists of two major spans: the eastern span, which features a protected bicycle and pedestrian path to Yerba Buena Island, and the western suspension span, which is reserved for vehicles only. All tolls are collected electronically in the westbound direction into San Francisco. Construction may affect access to Treasure Island.

The iconic Golden Gate Bridge carries US 101 between San Francisco and Marin counties. It features six lanes with variable lane configuration for traffic flow and provides separated pathways for bicycles and pedestrians. All tolls are collected electronically in the southbound direction into San Francisco.