Downtown Chicago residents faced a chaotic morning on September 2 when the DuSable Lake Shore Drive bridge over the Chicago River failed to close after a scheduled lift. The bridge remained open for more than four hours, blocking all motor, bicycle and pedestrian traffic and creating a nightmare of congestion on Lake Shore Drive and surrounding streets.
Heat‑induced expansion caused the malfunction
City officials had opened the bridge early Wednesday to allow the Spirit of Chicago dining and entertainment yacht to pass. However, a “heat‑related issue” prevented the steel span from fully lowering and locking back into place. As temperatures climbed to 96 °F, the metal expanded, a phenomenon explained by Mike Pries, assistant director of operations at Total Traffic & Weather Network Chicago. He noted that on extremely hot days, steel bridges can expand enough to hinder proper closure.
Fire Department attempts to cool the bridge
A Chicago Fire Department fireboat stationed east of the bridge pumped thousands of gallons of water onto the 200‑foot steel span in an effort to cool it and restore functionality. Despite the effort, the bridge remained stuck open until approximately 2:30 p.m.
Traffic disruptions and detours
Police initially blocked northbound traffic at East Monroe Drive, later extending the closure to East Jackson Drive. Southbound traffic was redirected to the Navy Pier exit at Illinois Street and Grand Avenue. The resulting backups stretched for miles on Lake Shore Drive and spilled onto adjacent streets, including Michigan Avenue, where a mile‑long line of northbound vehicles was observed from Ida B. Wells Drive to Chicago Avenue.
Social‑media posts showed drivers stranded in the middle of the expressway, and pedestrians were forced to seek alternate routes. Runners and cyclists on the Lakefront Trail were turned back, with some carrying their bikes down stairs to cross on Columbus Drive.
Public reaction
Local commuters expressed frustration. One driver on X wrote, “Oh man…who authorized opening this damn thing on a day of extreme heat? I’m sure the Spirit of Chicago Cruise was worth it….” Residents along the riverfront gathered to watch the fireboat’s water spray, while visitors from out of state, such as Ann Van Karfen from Ohio, described the experience as unusual compared to traffic conditions in their hometowns.
Despite the inconvenience, riverboat tours, including Chicago’s First Lady Architecture Tour, continued to pass beneath the bridge, occasionally receiving a mist of water from the fire department’s efforts.
City response
The Chicago Department of Transportation confirmed the heat‑related issue but did not immediately answer why the lift was scheduled despite the forecasted extreme temperatures. Officials emphasized that safety remains a priority and that the bridge is a critical piece of downtown infrastructure.
As Chicago heads into the peak of summer heat, the incident underscores the challenges city engineers face in maintaining aging infrastructure under extreme weather conditions.
Original reporting: Block Club Chicago — read the source article.
