Lewis and Clark Memorial Bridge

The Lewis and Clark Memorial Bridge in the US state of South Dakota is a bridge that carries Interstate 90 (I-90) across the Missouri River and Lake Francis Case between Chamberlain on the east bank and Oacoma on the west bank of the river. Construction on the bridge began in 1967 and cost $8 million. It was dedicated on July 7, 1974, and was opened to traffic in August.[1][2]

Lewis and Clark Memorial Bridge
Coordinates43°48′06″N 99°21′12″W
Carries4 lanes of I-90
CrossesMissouri River
LocaleChamberlain and Oacoma, South Dakota, United States
Maintained bySouth Dakota Department of Transportation
History
Construction start1967
Construction cost$8 million
OpenedAugust 1974
Location

A historical marker, located at the Lewis and Clark Interpretive Center in Chamberlain-Oacoma, South Dakota, overlooks the bridge.

A view of the Lewis and Clark Memorial Bridge from the Lewis & Clark Interpretive Center in Chamberlain-Oacoma, South Dakota.
Historical marker at the Lewis & Clark Interpretive Center in Chamberlain-Oacoma, South Dakota.

See also

References
  1. "2,000 foot span on Missouri". Lead Daily Call. July 8, 1974. p. 2. Retrieved December 3, 2021 – via Newspapers.com.
  2. "I-90 Bridge at Chamberlain Opens to Traffic". Mitchell Daily Republic. August 7, 1974. p. 17. Retrieved December 3, 2021 – via Newspapers.com.


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