Indian Nation Turnpike Bridge No. 65.94 Rehabilitation

The Oklahoma Turnpike Authority selected Walter P Moore to provide bridge rehabilitation services for Bridge 65.94 which carries the Indian Nation Turnpike over SH-43 in Atoka County, Oklahoma. The project involved replacing the existing deck, bridge rails, and bearings of this three-span prestressed concrete beam bridge. Our team had to design repairs which would minimize impacts to the approach roadway and maintain an acceptable vertical clearance over the underlying state roadway.

Carbon fiber repairs were made in order to re-use the existing precast concrete girders, slotted bridge rails were introduced in the end spans to improve drainage from the bridge deck, and a special bearing pad design was performed in order to provide thin pads. These thinner bearing pads eliminated the need to raise the grade of the bridge which would have required the replacement of dozens of concrete panels in the approach roadway.

As part of the project, substructure repairs were made including the reconstruction of the northeast wing. The existing raised median was replaced with cable barrier for the length of the interchange, approximately 2,000 feet. Temporary median crossovers were utilized to shift traffic, so lanes remained open in both directions throughout construction of the project.