Carquinez Bridge

Carquinez Bridge
Carquinez Bridge
	The Carquinez Bridge in 2022: (from closest to furthest) a 2003 suspension bridge and the 1958 cantilever bridge
Coordinates	38°03′39″N 122°13′33″W / 38.0608°N 122.2257°W
Carries	8 lanes of I-80; Bicycles and pedestrians on westbound span;
Crosses	Carquinez Strait
Locale	Crockett and Vallejo, California, U.S.
Official name	Alfred Zampa Memorial Bridge (suspension bridge only)
Other name(s)	Zampa Bridge, Vallejo Bridge
Owner	State of California
Maintained by	California Department of Transportation and the Bay Area Toll Authority
ID number	28+0352 (2003 span), 23+0015L (1927 span), 23+0015R (1958 span)
Website	www.bayareafastrak.org
Characteristics
Design	Cantilever bridge (Eastbound); Suspension bridge (Westbound)
Total length	3,465 feet (1,056 m) or 0.66 miles (1.06 km) (suspension bridge), 3,300 feet (1,000 m) (cantilever bridge)
Width	84 feet (26 m) (suspension deck), 52 feet (16 m) (cantilever deck)
Height	410 feet (120 m) (suspension tower)
Longest span	2,387 feet (728 m) (suspension span)
Clearance below	148 feet (45 m) (suspension bridge), 140 feet (43 m) (cantilever bridge)
History
Opened	May 21, 1927 (original span); November 25, 1958 (eastbound); November 11, 2003 (westbound)
Closed	September 4, 2007 (original span)
Statistics
Toll	Eastbound only; FasTrak or pay-by-plate, cash not accepted; Effective January 1, 2022 – December 31, 2024:; $7.00; $3.50 (carpool rush hours, FasTrak only);
Location

The Carquinez Bridge is a pair of parallel bridges spanning the Carquinez Strait at the northeastern end of San Francisco Bay. They form the part of Interstate 80 between Crockett and Vallejo, California, United States.

The name Carquinez Bridge originally referred to a single cantilever bridge built in 1927, which was part of the 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 made the 1927 span unsafe in case of an earthquake, and led to the construction, and 2003 opening, of a replacement: a suspension bridge officially named the Alfred Zampa Memorial Bridge, in memory of iron worker Al Zampa, who played an integral role in the construction of numerous San Francisco Bay Area bridges. The Alfred Zampa Memorial Bridge carries southbound traffic from Vallejo to Crockett, and the 1958 cantilever span carries northbound traffic.