The $41 million Antioch Bridge (John A. Nejedly Bridge) was opened to traffic in December 1978, and carries over 9,700 vehicles daily.

The new high-level structure is 1.6 miles long and 40 feet wide with a narrow shoulder in each direction for bicyclists, pedestrians, and emergency use. It spans the 3,600-foot wide San Joaquin River and extends 4,000 feet onto Sherman Island in Sacramento County to the north and 1,000 feet in Contra Costa County to the south. The new bridge has a navigational clearance of 135 feet vertically and 400 feet horizontally.

The American Toll Bridge Company completed the original bridge in 1925 and opened it to traffic in 1926. The company operated the bridge until 1940 when the State acquired it.

It is the only northerly highway connection across the San Joaquin River linking east Contra Costa County to the Delta communities of Rio Vista and Lodi.

Toll for a 2-axle vehicle is $3, collected from northbound traffic.