The
Carquinez Bridge refers to
parallel bridges spanning the
Carquinez Strait, forming part of
Interstate 80 between
Crockett and
Vallejo, in the
U.S. state of
California. The name originally referred to a single
cantilever bridge built in 1927, helping to form a direct route between
San Francisco and
Sacramento. A second parallel cantilever bridge was completed in 1958 to deal with the increased traffic. Later, seismic problems of the 1927 span led to the construction and 2003 opening of a replacement: a
suspension bridge officially called the
Alfred Zampa Memorial Bridge. Currently, the Alfred Zampa Memorial Bridge carries westbound traffic from Vallejo to Crockett, and the 1958 cantilever span carries eastbound traffic.