The Clark Bridge is a cable-stayed bridge across the Mississippi River between West Alton, Missouri and Alton, Illinois.

Named after explorer William Clark like the bridge it replaced, the cable-stayed bridge opened in 1994.

It is the northernmost river crossing in the St. Louis metropolitan area.

Designed by Hanson Engineers under contract to Illinois Department of Transportation (DOT), the Clark Bridge was the first in the United States in which "such a light steel-framed cable-stayed design was combined with a cable saddle type of pylon".

[1] The bridge used 8,100 short tons (7,200 long tons; 7,300,000 kg) of structural steel; 44,100 cubic yards (33,700 m3) of concrete; and more than 160 miles (260 km) of cable wrapped with 4 acres (1.6 ha) of yellow plastic piping.