Length: 322 mi. Direction: south-north. Illinois Route 1 (IL-1) begins in Chicago, and ends in Cave-in-Rock. The highway stretches across the counties of Clark, Cook, Crawford, Edgar, Edwards, Gallatin, Hardin, Iroquois, Lawrence, Vermilion, Wabash, White, and Will. It was opened in 1918.
POPULAR SIGNS:More signs
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