Illinois 159 is a north-south route running from Red Bud through the Metro-East to IL16. It passes through Collinsville and Belleville on its way.
Intersections from south to north:
In the town of Red Bud, IL159 begins at IL3, at a point which is the western terminus of IL154
IL156 joins from the west
IL156 breaks off and goes east
IL15 at Belleville
IL161 at Swansea
IL162 near Glen Carbon
I-255 near Glen Carbon
As IL157 joins IL143 from the west, IL159 joins IL143 to go toward the northwest at Edwardsville
IL143 breaks off and heads west
IL138 near Bunker Hill
IL159 ends at IL16 at Royal Lakes.
It passes through these towns: Red Bud, Smithton, Belleville, Swansea, Fairview Hts., Collinsville, Maryville, Edwardsville, Bunker Hill, Royal Lakes.
