Starting Monday, drivers will not be able to use the Keystone Dam bridge for the next 13 months.
The bridge, also known as Oklahoma 151, will be out of commission while crews replace the road surface which has been there since the dam was built in 1964.
$10-million in federal grant money will be used to replace the bridge.
Drivers are advised to choose one of the alternate routes that are posted near the area by the U.S. Army Corps of Engineers.