The Chicago Dept. of Transportation will have just nine days in late April to replace a large section of a double-deck drawbridge spanning the Chicago River, mirroring an early March operation to avoid a lengthy disruption of rail operations atop the two-leaf structure.
Beginning April 26, CDOT will suspend rail operations to replace a cantilevered leaf, or bridge arm, on the 91-year-old Wells Street Bridge, one of 40 fixed-trunnion bascule spans in Chicago and one of two that features a lower level for vehicles and pedestrians and, above it, commuter rail.