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Michigan Avenue Bridge

Michigan Avenue Bridge
Michigan Ave Bridge 20100912.jpg
Michigan Avenue Bridge viewed from the west
Coordinates 41°53′19.9″N 87°37′27.7″W / 41.888861°N 87.624361°W / 41.888861; -87.624361Coordinates: 41°53′19.9″N 87°37′27.7″W / 41.888861°N 87.624361°W / 41.888861; -87.624361
Carries Michigan Avenue
Crosses Chicago River
Locale Chicago
Official name DuSable Bridge
Heritage status Chicago Landmark
ID number 000016612026812
Characteristics
Design Double-leaf, double-deck, fixed counterweight, trunnion bascule bridge
Total length 399 feet (122 m)
Width 91.75 feet (27.97 m)
Longest span 256 feet (78 m) between trunnions
220 feet (67 m) between piers
Clearance below 16 feet (4.9 m)
History
Designer Bureau of Engineering, Chicago Department of Public Works
Construction begin April 15, 1918
Construction end 1920
Opened May 14, 1920
Statistics
Daily traffic 37900 (upper deck)
11700 (lower deck)

The Michigan Avenue Bridge (officially DuSable Bridge) is a bascule bridge that carries Michigan Avenue across the main stem of the Chicago River in downtown Chicago, Illinois, United States. The bridge was proposed in the early 20th century as part of a plan to link Chicago's south side and north side parks with a grand boulevard. Construction of the bridge started in 1918, it opened to traffic in 1920, and decorative work was completed in 1928. The bridge provides passage for vehicles and pedestrians on two levels; it is an example of a fixed trunnion bascule bridge, which is also known as a "Chicago style bascule bridge". The bridge is included in the Michigan–Wacker Historic District and has been designated as a Chicago Landmark.

The location is significant in the early history of Chicago. Events from the city's past are commemorated with sculptures and plaques on the bridge, and exhibits in the McCormick Bridgehouse & Chicago River Museum—housed in one of the bridge tender houses—detail the history of the Chicago River.

The Michigan Avenue Bridge has a north–south orientation, spanning the main stem of the Chicago River between the Near North Side and Loop community areas of Chicago. Its northern portal lies at the foot of the Magnificent Mile, between the Wrigley Building and Tribune Tower. Its southern portal is at the intersection of Michigan Avenue and Wacker Drive, overlooked by the London Guarantee Building and 333 North Michigan. The neighboring bridges are Columbus Drive Bridge to the east and Wabash Avenue Bridge to the west.


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