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
The bridge in 2007
Coordinates	43°48′06″N 99°21′12″W
Carries	4 lanes of I-90
Crosses	Missouri River
Locale	Chamberlain and Oacoma, South Dakota, United States
Maintained by	South Dakota Department of Transportation
History
Construction start	1967
Construction cost	$8 million
Opened	August 1974
Location

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

Historical marker at the Lewis & Clark Interpretive Center in Chamberlain-Oacoma, South Dakota.

See also

• Transport portal
• Engineering portal

• List of crossings of the Missouri River