TULSA, Okla. — The Tulsa District Corps of Engineers report Kiewit Construction has removed eight of the 18 roadway spans over Keystone Dam. Modifications to the bridge piers are currently taking place. Next, the precast pier pedestals will be installed on the piers providing support for the new precast girders.
Col. Richard Pratt, Commander of the Tulsa District said, “The progress on the Keystone Bridge replacement is impressive including the installation of a gantry crane used to remove the existing bridge components and replace them in a systematic and efficient manner."
After making necessary substructure repairs and upgrades, the spans will be replaced with prefabricated components custom made for the bridge. The purpose of using prefabricated components is to decrease the time of construction so the bridge can be reopened as soon as possible.
Project Engineer for the Corps Keith Rice said, “Removing the first span was used as a learning experience to improve efficiency and safety for removing the rest of the spans. The demolition is preceding placement of prefabricated roadway elements scheduled to begin this month.”
The 18 spans have been in place since the dam was constructed in 1964. Over time, the bridge has degraded to the point where engineers determined it necessary to replace the bridge.
Col. Pratt commented, "This project represents a great partnership between the U.S. Army Corps of Engineers and the Oklahoma Department of Transportation to replace a critical roadway crossing the Arkansas River just 15 miles west of Tulsa."
The complete replacement and opening of the roadway bridge is expected to be in November of 2014. Contract completion is scheduled for February 2015.