DuSable Bridge, Chicago

Chicago boasts one of the largest collections of movable bridges in the world, with trunnion bascules being the predominant type. This particular bridge, well-suited for its prominent and bustling location, elegantly spans the river without any protruding superstructures, maintaining a generous, navigable channel. Its construction held paramount importance in the 1909 Plan of Chicago, serving as a catalyst for the rapid revitalization of real estate along North Michigan Avenue. Drawing inspiration from the design of Paris's Alexander III Bridge (1900), it features four corner pylons, decorative abutments, a gracefully flat arch profile, and seamlessly integrated embankments.

The forty-foot pylons, serving as functional operator houses, are adorned with sculptural reliefs narrating key events in Chicago's history. These include the explorations of Marquette and Joliet, the establishment of the city by trader Jean Baptiste Point du Sable, the Fort Dearborn Massacre of 1812, and the city's reconstruction following the devastating Great Chicago Fire of 1871. A commemorative plaque marks the site of the fort at the southern end of the bridge. Additionally, the southwest structure now houses a museum operated by the Friends of the Chicago River, open seasonally, providing visitors with the opportunity to observe the inner workings of the bridge's gears responsible for its opening and closing.