In Cook County, Illinois State Route 171 runs along the Illinois and Michigan Canal and then turns north along 1st Ave. This is a heavlily used north-south aritery in the near western burbs of Chicago. IL St Rt 171 passes through the following towns. Lemont
Willow Springs
Justice
Bridge View
Bedford Park
Summit
Mc Cook Lyons
Riverside
Brookfield
North Riverside
Maywood Melorse Park
River Grove Chicago Norridge IL St Rt 171 is multi-plexed in Cook County. Illinois State Route 83, in unicorporated Lemont.
IL St Rt 171 intersects the following highways in Cook County. Illinois State Route 83, in unicorporated Lemont.
SB IL St Rt 171 near the Will/Cook County Line at Homer Glen. A junction marker on SB IL St Rt 83/171. NB IL St Rt 83/171 near the Cal-Sag Canal. NB IL St Rt 83/171 crossing the Cal-Sag Canal. NB IL St Rt 171 near Willow Springs. NB IL st Rt 171 in Willow Springs. A BGS on EB U.S. Rt. 12/20; SB U.S. Rt. 45. A BGS on NB U.S. Rt. 45. Another BGS on EB U.S. Rt. 12/20; SB U.S. Rt. 45. A BGS on SB IL St Rt 171. NB IL St Rt 171 in Justice. A guild marker on NB IL St Rt 171. BGS on NB I-55. A BGS on SB I-55. NB IL St Rt 171 at I-55. NB IL St Rt 171 in Mc Cook. NB IL St Rt 171 at the end of the 1st Ave. expy. Signs on the entrance ramp to SB IL St Rt 171 in Mc Cook at 47th Street. The junction marker on EB U.S. Rt. 34. NB IL St Rt 171 near Brookfield Zoo. Junction sign on Roosevelt Road in Maywood. A BGS on EB I-290/IL St Rt 110. A BGS on EB I-290/IL St Rt 110. BGS on WB I-90. A BGS on EB I-190. NB IL St Rt 171 at its northern end. A junction sign on WB IL St Rt 72. A street marker on the stop light mast on WB IL St Rt 72. The begin and end marker at IL St Rt 72.
