Built in 1920 by designers Thomas G. Pihlfeldt, Hugh E. Young, Edward Bennett. The Michigan Avenue Bridge connects the downtown Loop to the Magnificent Mile, this is essentially the "Main Street Bridge" of Chicago, since it carries a busy roadway including as many as 30,000 pedestrians daily, and has been decorated to give it the feel of a gateway bridge. It the is most well-known of the Chicago bascule bridges. The design of the trusses and the bridge itself is comparable to other bridges in the city, except that this bridge is one of the less common double-deck bridges in the city. The decorations such as the bridge-tender towers on this bridge, and the plaques on the bridge also set this aside from other Chicago bridges. The city has furthered this bridge's unique appearance by flying various flags on the bridge as well.
The southwest bridgetender tower of this bridge contains the "McCormick Bridgehouse & Chicago River Museum". With an entry fee of only three dollars, this small museum offers a history of the bridge and the Chicago River, but perhaps one of the most exciting parts of the muesum is that they have opened up a viewing area to the public where you can view the motors, breaks, trunnion, and other mechanical parts of the movable bridge that are normally hidden and restricted from the view of the public. Some of the original electrical equipment that was saved from a previous rennovation project is on display here as well. (historicbridges.org)