Allen Street Bridge Replacement - Kelso, Wash.
This new bridge carries four lanes of traffic over the Cowlitz River and Burlington-Northern mainline railroad. The bridge serves as the main link between downtown Kelso and Longview. At 1,120 ft long, the bridge was constructed using reinforced earth techniques with precast panel facing. The span of the bridge over the river has six piers founded on three 10 ft diameter drilled shafts. The bridge deck and rail are cast-in-place concrete.