Route 543 and 603 End of Detour

New Detour

Effective Date

Tue, 07/21/2026

Effective Tuesday, July 21, 2026,

Construction on Dundee in Elgin between Page and Plum has shifted to allow Route 543 and 603 to return to their regular route on Dundee starting on Tuesday, July 21, 2026.

Please note that continued construction on the northbound lanes may result in temporary stop closures on Route 543.

Routes

543 - Dundee – Carpentersville

603 - Elgin Transportation Center – Rosemont Express