Location: Sioux, IA
Owner: Union Pacific Railroad
OCCI teamed with UPRR to design and construct a new bridge under emergency response conditions, working around the clock, in 8 days. The existing bridge Br 24.75 on the Sioux City Subdivision just north of the mouth of the Little Sioux River collapsed when the main river pier fell and the adjacent center spans were partially submerged. The four-span bridge was replaced with three long spans that the railroad had in their structural steel stock and two custom short end spans. The first train was able to cross the bridge within 8 days.