Cutting in half the number of piers on a toll-funded Interstate bridge made the litany of obstacles beneath it more manageable.
Crews are building a pair of nearly mile-long new highway bridges amid a confluence of existing transportation systems in Chicago’s southwest suburbs. There’s the Des Plaines River, the Chicago Sanitary and Ship Canal, the Illinois and Michigan Canal, two sets of major railroad tracks, local roads and a pipeline operated by Buckeye Partners that sends jet fuel to O’Hare airport.