Illinois State Police said there were major traffic impacts following a three-vehicle crash in Northbrook near Dundee Road Monday afternoon.

State police said they were called to the scene in the southbound lanes of the Edens Expressway around 12:30 p.m. near milepost 30 at Dundee Road near Route 41.

Police have not given details about what kinds of cars were involved in the crash, or how many people were injured or killed. As of 5 p.m., a tow operator was taking away a car in the crash.

All southbound lanes of I-94 were closed at Dundee Road following the crash. The Dundee Road southbound ramp to I-94 and the southbound lanes of Lake Cook Road to I-94 were also closed. 

Police did not say how long they expect the closures to last.

Forestway Drive, Skokie Boulevard, Waukegan Road, Green Bay Road, and even the Tri-State Tollway were gridlocked following the crash.

State police said the crash scene is still active and the investigation is ongoing. Drivers should seek alternate routes and are advised to avoid the area. Delays on I-94 south should be expected.

The inbound lanes of the Edens were finally reopening at 6 p.m.