394 Accident Today Illinois — Traffic has come to a standstill on northbound Illinois Route 394 near U.S. 30 after a serious crash blocked all lanes of the Calumet Expressway, according to early reports from authorities and on‑scene traffic data.
The collision occurred in the south suburban area close to the US 30 interchange, forcing police and emergency crews to shut down the entire northbound roadway as they work to manage the scene and clear the wreckage. Illinois Route 394 is a major north–south route serving the Chicago south suburbs and connects traffic with US 30 and other regional highways.
Although initial details about injuries or fatalities are not yet available, a related hit‑and‑run crash reported earlier today on Route 394 near US 30 resulted in at least one person being taken to hospital with injuries, according to local law enforcement.
Motorists are being urged to avoid the area and seek alternate routes as congestion has quickly built on surrounding roadways. Delays are expected to extend for several hours while police conduct their investigation, document the scene, and coordinate tow and recovery operations.
This remains an active traffic incident, and updates on injuries, lane reopenings, and official statements are expected as more information becomes available.

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