| State: | IL |
| Type: | IL |
| Route: | 136 |
| Map Custom: | yes |
| Map Notes: | IL 136 highlighted in red |
| Length Mi: | 3.22 |
| Length Ref: | [1] |
| Direction B: | East |
| Direction A: | West |
| Terminus A: | in Fulton |
| Terminus B: | in Fulton |
| Counties: | Whiteside |
| Established: | 1967[2] |
| Previous Route: | 136 |
| Previous Type: | US |
| Next Type: | IL |
| Next Route: | 137 |
Illinois Route 136 (IL 136) is an east–west state highway in northwestern Illinois. It runs from the Mark Morris Memorial Bridge over the Mississippi River, connecting to Iowa Highway 136 in Clinton, Iowa, east to U.S. Route 30 (US 30) east of Fulton. This is a distance of 3.22miles.
IL 136 is a two-lane surface road for its entire length. The highway begins at the Mark Morris Memorial Bridge, which connects to Iowa Highway 136 in Clinton, Iowa. At the foot of the bridge is a signal-controlled intersection with 4th Street in Fulton, which is signed as the Lincoln Highway. IL 136 continues east along 14th Avenue, a residential street dotted by churches and businesses. On the eastern edge of Fulton, IL 136 intersects IL 84. The final 2miles of IL 136, which run along Fulton Road, are part of the Lincoln Highway and are signed as such. IL 136 ends at an intersection with US 30.
SBI Route 136 originally traveled from IL 1 to the village of Flat Rock in rural Crawford County, a distance of about 3000feet. In the meantime, the Lyons–Fulton Bridge was numbered US 30 through 1957, and US 30 Alternate (US 30 Alt.) through 1967. After 1967, the bridge and road to US 30 were changed to IL 136. In 1975, the Lyons–Fulton Bridge closed and was replaced by the Mark Morris Memorial Bridge located NaNmiles downstream. The spur to Flat Rock was left unnumbered.[2]