# List of county roads in Will County, Illinois

The Will County Highway System is a county-maintained system of arterial county highways in Will County, Illinois, United States. They are marked with the standard M1-6 pentagon-shaped highway marker on the base of traffic signals at intersections with other county highways. They are not marked on any freeway or tollway exits or signed with separate reassurance markers. In addition, although concurrencies of county highways exist in the county, they too are not explicitly signed as such.

## Route list

| Number | Length (mi) | Length (km) | Southern or western terminus | Northern or eastern terminus | Local names | Formed | Removed | Notes |
| CR 1 | 3.664 | 5.897 | US 6 near Homer Glen | East Will-Cook county line in Homer Glen | Parker Road, Hadley Road | — | — | |
| CR 4 | 3.204 | 5.156 | US 52 (Joliet Road) near Manhattan | US 52 (Cedar Road) near Manhattan | Elevator Road | — | — | Southern segment |
| CR 4 | 3.204 | 5.156 | US 52 in Manhattan | US 52 (Cedar Road) near Manhattan | Cedar Road (South) | — | — | Central segment |
| CR 5 | 0.994 | 1.600 | Essington Road in Joliet | US 30 (Plainfield Road) in Crest Hill | Caton Farm Road | — | — | |
| CR 6 | 5.395 | 8.682 | CR 19 (Center Road) in Frankfort | IL 50 (Governors Highway) in Monee | Manhattan-Monee Road | — | — | |
| CR 7 | 3.041 | 4.894 | Wesley-Florence Township Line near Wilmington | South Arsenal Road, Quigley Road near Wilmington | Old Chicago Road | — | — | |
| CR 8 | 4.184 | 6.733 | IL 102 near Wilmington | East Kankakee-Will county line near Manteno | Manteno Road | — | — | |
| CR 10 | 8.532 | 13.731 | South Kankakee-Will county line near Peotone | Court Street, Crete-Monee Road in Monee | Will Center Road | — | — | |
| CR 14 | 5.232 | 8.420 | 127th Street in Plainfield | 87th Street in Naperville | Plainfield-Naperville Road | — | — | Plainfield-Naperville Road continues north as DuPage CR 1 |
| CR 16 | 3.004 | 4.834 | IL 7 (159th Street) in Homer Glen | North Will-Cook county line in Lemont | Bell Road | — | — | Bell Road continues north as Cook CR W18 |
| CR 17 | 7.965 | 12.818 | Elwood International Port Road in Elwood | US 52 in Manhattan | Arsenal Road, Manhattan Road | — | — | |
| CR 19 | 10.109 | 16.269 | CR 25 (Wilmington Road) near Peotone | Steger Road in Frankfort | Center Road | — | — | |
| CR 20 | 5.467 | 8.798 | US 45/US 52 near Peotone | West Street | Joliet Road (Peotone) | — | — | |
| CR 21 | 4.365 | 7.025 | IL 59 (Neltnor Boulevard) in West Chicago | Main Street – Glen Ellyn in Glen Ellyn | Crete-Monee Road | — | — | |
| CR 23 | 6.833 | 10.997 | IL 50 (Governors Highway) in Monee | IL 1/IL 394 (Dixie Highway) in Crete | Pauling Road, Goodenow Road | — | — | Southern terminus of IL 394 |
| CR 24 | 13.461 | 21.663 | IL 50 (Harlem Avenue) in Peotone | Illinois-Indiana state line | Peotone-Beecher Road, Indiana Avenue | — | — | |
| CR 25 | 18.079 | 29.095 | IL 53 in Wilmington | CR 70 (Drecksler Road) in Peotone | Wilmington-Peotone Road | — | — | Longest county highway in Will County |
| CR 28 | 4.012 | 6.457 | South Will-Kankakee county line near Essex | IL 113 near Braidwood | Essex Road | — | — | Essex Road continues south as Kankakee CR 41 |
| CR 29 | 1.606 | 2.585 | IL 129 (Washington Street) near Wilmington | IL 53 (Baltimore Street) in Wilmington | Strip Mine Road | — | — | |
| CR 35 | 2.300 | 3.701 | New Avenue in Romeoville | Archer Avenue in Lemont | 135th Street - Romeo Road | — | — |
| CR 36 | 5.854 | 9.421 | US 30 (Joliet Road) in Plainfield | IL 7/IL 53 in Lockport | Renwick Road | — | — | |
| CR 37 | 5.694 | 9.164 | US 30 (Joliet Road) in Plainfield | IL 7/IL 53 in Lockport | 143rd Street | — | — | |
| CR 49 | 7.865 | 12.657 | CR 53 (Western Avenue) in University Park | Illinois-Indiana state line near Crete | Exchange Street | — | — | |
| CR 51 | 2.966 | 4.773 | IL 53 (Chicago Street) in Joliet | CR 55 (Cherry Hill Road) in Joliet | Mills Road | — | — | |
| CR 53 | 3.460 | 5.568 | CR 21 (Crete-Monee Road) in University Park | North Will-Cook county line in Park Forest | Western Avenue | — | — | |
| CR 55 | 1.704 | 2.742 | CR 51 (Mills Road) in Joliet | US 30 (Cass Street) in Joliet | Cherry Hill Road | — | — | |
| CR 58 | 5.854 | 9.421 | CR 10 (Will Center Road) in Plainfield | IL 7/IL 53 in Lockport | County Line Road | — | — | |
| CR 63 | 1.544 | 2.485 | US 30 (Lincoln Highway) in New Lenox | CR 64 (Francis Road) in Mokena | Schoolhouse Road | — | — | |
| CR 64 | 6.127 | 9.860 | CR 52 (Gougar Road) in Joliet | Front Street in Mokena | Francis Road | — | — | |
| CR 66 | 1.972 | 3.174 | Illinois Route 59 in Naperville | CR 14 (Plainfield-Naperville Road) in Bolingbrook | 111th Street, Hassert Boulevard | — | — | |
| CR 74 | 12.382 | 19.927 | US 52 in Joliet | East Will-Cook county line in Frankfort | Laraway Road | — | — | |
| CR 77 | 1.320 | 2.124 | US 6 in Channahon | I-55 in Channahon | West Bluff Road | — | — | |
| CR 79 | 2.024 | 3.257 | South Kankakee-Will county line | CR 25 (Wilmington Road) near Manhattan | Tully Road | — | — | Tully Road continues south as Kankakee CR 7 |
| CR 80 | 1.742 | 2.803 | West Grundy-Will county line | BNSF Railroad in Wilmington | Lorenzo Road | — | — | |
| CR 83 | 1.001 | 1.611 | CR 84 (191st Street) in Tinley Park | 183rd Street in Tinley Park | 80th Avenue | — | — | |
| CR 84 | 3.008 | 4.841 | US 45 (LaGrange Road) in Mokena | IL 43 (Harlem Avenue) in Tinley Park | 191st Street | — | — | |
| CR 86 | 0.476 | 0.766 | US 52 (Manhattan Road) in Joliet | CR 74 (Laraway Road) in Joliet | Cherry Hill Road | — | — | Shortest county highway in Will County |
| CR 88 | 9.384 | 15.102 | US 30 (Plainfield Road) in Crest Hill | Lily Cache Lane in Bolingbrook | Weber Road | — | — | |
| CR 89 | 1.205 | 1.939 | CR 14 (Plainfield-Naperville Road) in Naperville | DuPage River Bridge in Bolingbrook | 95th Street | 02017-01-012017 | current | |
| CR 90 | 5.880 | 9.463 | IL 53 in Elwood | Wauponsee Glacial Trail near Manhattan | Hoff Road | — | — | |