Illinois Route 111 is a north-south highway connecting points in the Metro-East and Alton areas to points north. Its northern end is in Waverly, in southeastern Morgan County. From there, it runs as a rural two-lane road, south-southwesterly to Godfrey, where it cuts east along Illinois Routes 3 and 140 to Bethalto. At Bethalto, Illinois 111 runs southerly to its final stretch. This final stretch passes through Washington Park, meets an interchange with Interstate 64, and ends about a mile south of that interchange. The southern terminus is at Lake Drive, in the eastern reaches of East St. Louis.
Illinois Route 111's northern end is at Illinois 104 in Waverly, about a dozen miles southwest of Springfield:
Illinois Route 111's northern end is at Illinois 104 in Waverly, about a dozen miles southwest of Springfield:
Illinois 108, which branches east toward Carlinville, comes from Carlinville and joins Illinois 111 south for a mile...
Illinois 108 splits away from Illinois 111 to continue east...
At Medora, Illinois 111 joins Illinois 267 south for a long concurrency:
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The twin routes Illinois 111 and Illinois 267 cross Illinois 16 near Piasa:
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Just after the Illinois 255 interchange, Illinois 111 meets US Route 67 to join that route south, as Illinois 267 ends:
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Illinois 111 splits from US Route 67 in Godfrey on what is basically an access road to Illinois 3...
Illinois 111 joins Illinois 3 easterly then southerly, passing back under US Route 67 with no access...
A diamond interchange with ramps from Illinois 3 provides access to Illinois 140, and Illinois 111 turns to follow Illinois 140 east...
Shortly after that junction with Illinois 255, Illinois 111 splits to head south independently of Illinois 140 at Bethalto...
Illinois 111 jogs westerly to cross over Illinois 255 again, where the pair of routes are connected by another interchange...
In Wood River, Illinois 111 crosses Illinois 143...
Approaching Pontoon Beach, Illinois 111 meets Interstate 270 at an interchange...
In Pontoon Beach, Illinois 111 connects with Illinois 162 at a standard 4-way intersection:
Alongside Washington Park, Illinois 111 meets another interchange, this time with Interstate 64...
Illinois 111 reaches its random southern endpoint at Lake Drive, just west of Interstate 255, in East Saint Louis...
