All of the steel girders have successfully been erected in Spring Valley, IL on IL 89 over the Illinois River. Pictured is one of the gate beam picks,
which tied the final unit together. The gate beams were nine-foot tall girders measuring 230 feet in length. They were lifted into place with a 300-ton crane floating on a barge.
Westbrook involvement with the girder erection included the design of the girder erection procedure and development of the associated plans: design of the 120-foot pick beam, design of the temporary bents both on land and in the waterway, and the crane on barge stability analyses for the 300-ton crane and accessory barges.