^Illinois 163 continuing north away from Bond Avenue in Centreville, February 2023.
Illinois 163 is a very short north-south route from Alorton to Millstadt in St. Louis's southeastern suburbs.
Illinois 163 begins at Illinois 15 at the north end of its route, in Alorton, before passing under Interstate 255...
Illinois 163 begins at Illinois 15 at the north end of its route, in Alorton, before passing under Interstate 255...
Illinois 163 then encounters a signalized intersection where Illinois 13 sees its western end, and where Illinois 157 joins toward the south. Three routes enter, but only two continue south...
The two routes that continued onward, Illinois 157 and Illinois 163, split up again after a concurrency lasting shorter than one mile...
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Finally, Illinois 163 reaches its southern terminus at Illinois 158 in Millstadt...
