Illinois Route 38 is an east-west route connecting Chicagoland and rural areas farther west in north-central Illinois. In Chicagoland, it's known as Roosevelt Road. Illinois 38 has the unique distinction of being named for the sound of its number; it used to be "Route 30A", but the designation changed to "38" because "8" sounds like "A". Illinois 38 connects locales like Dixon, Rochelle, DeKalb, Geneva, Wheaton, and Hillside, and it used to reach inner Chicago.
The western end of Illinois 38 is at US Route 52 in Dixon:
Illinois 38 zigzags easterly and northerly through Franklin Grove and Ashton, paralleling Interstate 88 to the north, before entering Rochelle where it joins Illinois 251:
Illinois 38 then crosses the Fox River to encounter Illinois 25:
In West Chicago, Illinois 38 goes under Illinois 59, but a pair of connectors provide access...
Illinois 38, now squarely known as Roosevelt Road, meets a similar situation in Glen Ellyn passing over Illinois 53, but drivers can use Baker Hill Road in the northeast quadrant of the crossing to connect between the routes...
Illinois 38 meets a partial interchange with Interstate 294, with three-quarters of full access (only the north leg and east leg can't access one another):
At Hillside, Illinois 38 ends at the triplicate concurrency of US Routes 12, 20, and 45; however, Roosevelt Road continues east through several more suburbs and the entire width of Chicago, ending at Lake Shore Drive (US Route 41).