Rte. 12 - Rand Road

 

From Wikipedia:

U.S. Route 12 or US 12 is an east-west United States highway, running from Grays Harbor on the Pacific Ocean, in the state of Washington, to downtown Detroit, for almost 2500 miles (4000 km). As a thoroughfare, it has mostly been supplanted by I-90 and I-94, but remains an important road for local travel.

The highway begins in Aberdeen, Washington and ends currently in downtown Detroit

But for those of us who drove it:

US 12 is referred to as Rand Road in Chicago's northwest suburbs. Rand is an original name for the area around Des Plaines, Illinois, the location where the road resumes its westerly direction.