Carquinez Bridge, Toll bridge in Vallejo, United States.

Carquinez Bridge is a road crossing in the San Francisco Bay Area linking Vallejo and Crockett across the Carquinez Strait. The steel structure runs for 1056 meters (about 3500 feet) and combines suspension and cantilever elements in a single span.

The bridge opened on November 11, 2003, replacing an older crossing from the 1920s. It came about as part of a modernization program for the transportation routes around San Francisco Bay.

The suspension span is officially the Alfred Zampa Memorial Bridge, named for an ironworker who began his career on the 1927 Carquinez span in 1925 and also worked on the Golden Gate Bridge; he was one of the few people to survive a fall from it. The 3.6 m pedestrian and bicycle path on the western side opened in May 2004.

Toll is collected only on the northbound 1958 cantilever span, at a station on the north shore; the southbound Alfred Zampa Memorial Bridge is toll-free. A separated pedestrian and bicycle path, 3.6 m wide, runs along the western side of the suspension span and opened in May 2004.

The Carquinez crossing is not one bridge but three built side by side in succession: the 1927 cantilever span was demolished by September 4, 2007, the 1958 cantilever carries northbound traffic, and the 2003 suspension span carries southbound traffic. A 3,000-pound bronze bell that sat atop a pier of the 1927 bridge was taken down and stored for a future museum at the Oakland end of the Bay Bridge.