Gray adventures
Marshall County IL, Putnam County IL (0)
The Illinois official bicycle maps are excellent - still the best ones I know of even though some other midwestern states have also come out with good maps in recent years. The green roads are the ones rated the best, the orange ones are good, too, and the red ones should usually be avoided.
But what about the gray roads? The Illinois maps leave those as an adventure for the rider. Often they're gravel. But the one in Putnam County circled in red (above) is different. It no longer exists as a road. ...