Express highways--Illinois
Express highways--Missouri
Interstate 270 (Ill. and Mo. : Proposed)
Interstate Highway 255 (Ill. and Mo.)
I-270 (Ill. and Mo. : Proposed)
Interstate Highway 270 (Ill. and Mo. : Proposed)
I-255 (Ill. and Mo.)
Here are entered works on the highway that was originally proposed as Interstate 270, but completed as Interstate 255.
Interstate 255 (Ill. and Mo.)