DOWNED I-40 BRIDGE OPENED IN JUST 47 DAYS

This article describes the 24-hour work schedule and new technology used by the contractor who completed repairs of the knocked down I-40 bridge in Oklahoma in just 47 days. The original time estimate was 6 months, but the contract specified completion in 120 days because of user costs imposed by lengthy detours. Traffic had to be back on the bridge in 57 days. Recovery of the vehicles that plunged off the structure after it was hit by a barge was included in the contract for stabilizing the structure. Demolition and removal of the fallen span took just two weeks. The final reconstruction phase started before the removal was complete, as crews focused on the piers and supports. Early-strength concrete was used, and its hardening was monitored by new Versiflex elastomeric bearings. Steelflex modular expansion joints and strip seal expansion were also used.