Don N. Holt Bridge

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Don Holt Bridge
Coordinates 32°53′28″N 79°57′47″W / 32.89111°N 79.96306°W / 32.89111; -79.96306Coordinates: 32°53′28″N 79°57′47″W / 32.89111°N 79.96306°W / 32.89111; -79.96306
Carries I-526
Crosses Cooper River
Locale North Charleston, Charleston
Official name Don N. Holt Bridge
Maintained by South Carolina Department of Transportation
Design Continuous truss bridge
Width 93 feet 7 inches (28.52 m), 6 lanes of traffic
Longest span 800 feet (240 m)
Clearance below 155 feet (47 m)
Construction end 1992
Opened March 10, 1992; 26 years ago (1992-03-10)
Daily traffic 72,200[1]

The Don N. Holt Bridge (Known locally as "The Dirty Don") is a parallel chord, three-span continuous, modified Warren-type truss bridge that carries Interstate 526 (I-526) over the Cooper River between Charleston and North Charleston. It was built in 1992 by the South Carolina Department of Transportation and was designed by HNTB Corporation.

The bridge provides a connection between the communities east of the Cooper River, including Mount Pleasant and Daniel Island, to North Charleston and I-26. It is part of a major hurricane evacuation route for the area.

The Don Holt Bridge is adjacent to a Kapstone (formerly MeadWestvaco) paper mill.

The bridge was named for Don N. Holt who served in the South Carolina House of Representatives and was in the insurance business.

See also[edit]


  1. ^ SCDOT Traffic Counts, Accessed April 19, 2007