The bridge is double-decked, the lower deck carrying three lanes of traffic south over the river with sidewalks on both sides of the street.
The upper deck serves as a bridge for the Chicago Transit Authority's Brown and Purple lines.
The bridge was constructed during the first term of William Hale Thompson.
[2][3] The two leaves (north and south) were built off-site and floated on the river to Wells Street for installation.
[5] The second period of the reconstruction that affects Chicago Transit Authority train service on the upper level began at 10 pm April 26, 2013 and ended before the morning rush hour Monday May 6, 2013.