One person is dead and another is hospitalized after a two-vehicle crash tore through the northbound express lanes of the Dan Ryan Expressway near 55th Street early Monday morning, prompting Illinois State Police to shut down inbound express lanes at 71st Street as troopers worked the scene.
The crash happened at 8:16 a.m. Monday, according to ABC7 Chicago, which reported that Illinois State Police confirmed one person killed and another injured in the collision. The injured person was transported to the hospital, police said, and troopers shut down the inbound express lanes at 71st Street while investigating. No further details were immediately available as of Monday afternoon.
Illinois State Police Troop 3, based in Des Plaines, holds primary jurisdiction over crashes on the Dan Ryan and other state highways and interstates across Cook County — not the Chicago Police Department, as Hoodline has previously reported. Illinois State Police were identified as the reporting agency for Monday's collision.
A Highway Built for Speed, and Danger
Monday's crash unfolded in the express lane system, a design meant to let long-distance drivers bypass local exit ramps, according to Grokipedia. The Dan Ryan's overall 14-lane configuration separates that through-traffic from local access lanes, but the split can complicate emergency access when a serious crash forces a shutdown, as happened at 71st Street on Monday.
The interchange of the Dan Ryan and 79th Street was identified as the single most dangerous location for fatal car crashes in Chicago, recording 135 fatal collisions between 2016 and 2024, according to data compiled by the Chicago Injury Lawyer analysis. The analysis also identifies factors at the 79th Street interchange.
Part of a Grim Pattern on the Dan Ryan
Monday's fatal crash adds to a string of deadly incidents on the Dan Ryan in recent weeks. Illinois State Police arrested a driver on reckless homicide charges following a fatal Labor Day weekend crash on the expressway that left an infant dead, an arrest announced less than two weeks before Monday's collision, per the state police. Hoodline has also reported on a fatal pedestrian hit-and-run, a death investigation involving a body found inside a disabled car near 35th Street, and a fatal hit-and-run at 47th Street in which a man was struck outside his red Jeep.
Further back, Hoodline covered a fatal wrong-way crash that led to charges against an Aurora man, and a separate collision in the northbound lanes. The corridor also saw a fatal crash last October, and another crash last November.
Speed and Volume Drive Statewide Risk
The Dan Ryan carries up to 307,100 vehicles daily on a portion of the roadway connecting downtown Chicago to the South Side and regional interstates including I-55, I-57, and the Chicago Skyway, according to Gribblenation. That volume, combined with high speeds, is a recurring theme in Illinois crash data.
Roughly 34.1% of all fatal motor vehicle crashes in Illinois between 2023 and 2024 — 760 out of 2,228 total fatal crashes — were speed-related, according to National Highway Traffic Safety Administration data cited by the St. Charles Police Department. Statewide, overall traffic fatalities held around 1,170 to 1,180 annually in 2024 and 2025, even as pedestrian deaths climbed to 218 in 2025, according to NHTSA figures referenced by Malm Law.
Troopers Lean on Cameras and Scott's Law
A report from CBS Chicago described Illinois State Police efforts involving vehicle-related crimes on highways like the Dan Ryan.
The state's Move Over Law, known as Scott's Law, also governs how motorists must behave around stopped emergency vehicles on highways like the Dan Ryan. Illinois State Police identify the law as Scott's Law. Violations of the law can carry fines up to $10,000, according to Illinois State Police.
As of Monday afternoon, Illinois State Police had not released the identities of the person killed or the person injured in the 55th Street crash, and no further details on the collision were immediately available.
