Wacker Drive Viaduct
Reconstruction from Monroe Street to Randolph Street
This $75 million project was located in the heart of downtown Chicago east of the Chicago River. The project involved the demolition of the existing viaduct superstructure with partial substructure removal from the north side of Monroe Street to the north edge of Randolph Street on Wacker Drive.
The project included a new post-tensioned cast-in-place viaduct superstructure with a latex concrete overlay, re-use of existing caissons, new columns, and new grade beams. Also involved was the lower level roadway reconstruction including paving, barrier walls, storm and sanitary sewers, water main, lighting and traffic signals, construction of ventilation chambers, Bascule Bridge fixed span repairs, and sidewalk rehabilitation. In addition, upper level roadway work included paving, sidewalks, drainage, lighting, traffic signals, and planters. The Washington Trolley Tunnel and the Chicago Freight Tunnel were also filled.
Reconstruction was staged so that the upper level storefronts and lower level dock and garage accessibility were maintained at all times. This high visibility project received intensive local media scrutiny.