Edwardsville, Illinois

Historical marker location:

632 W Schwarz Street, Edwardsville, Illinois

( Marker is at the intersection of West Street (Illinois Route 157) and West Schwarz Street, on the right when traveling east on West Street.)

Marker installed: 2013

Welcome to Route 66 Illinois.

The Chicago River was famously dyed green for the first time in 1962 to celebrate St. Patrick's Day. The tradition has continued every year since then, and now the river is dyed green for the holiday using an eco-friendly vegetable dye.