CTA Blue Line Tie Replacement.
Slow Zone Elimination Project Blue Line Reroutes:
More details...
Block 37 open cut tunnel
Will offer connection for Blue, Red line
Dearborn / Congress Block 37
I-55 over CSX RR Bridge/I-55 over Rte 30 Bridge
Butterfield Rd. & Rte 137, Libertyville, IL.
