Most of this work happens while Champaign is asleep. Under the orange lights of an empty lot at two in the morning, with the wind coming in unobstructed off the fields west of Duncan Road, Cleanvue Services, LLC is pushing snow into windrows and laying salt ahead of the refreeze. Plowing, clearing the entries, treating the ice — a night measured in inches against a stake. January dawn comes late here and comes up pink over flat ground, and by then the pavement is dark and open again. Nobody sees the shift; everybody uses it.