From the Jan. 13, 2016, MidWeek (DeKalb County, Illinois).
1941, 75 years ago: "Many have asked in the past few days when work would start on the rebuilding of the Sycamore-DeKalb road (Ill. Route 23). Only a vague answer can be given. In the first place attention is given to the fact that the state government is in a transition stage and funds for road building must be officially allocated for particular projects before anything can be done."
I imagine this involved widening it to four lanes. It is today a very congested stretch of road.