# Illinois Route 157

Illinois Route 157 (IL 157) is a 35.50-mile-long (57.13 km) north–south state highway in the southwestern part of the U.S. state of Illinois. The southern terminus of the highway is at an intersection with IL 3 in Cahokia. The northern terminus of the highway is at an intersection with IL 140 in Hamel.

## Route description

IL 157 travels concurrent with IL 13 and IL 163 in Centreville and IL 159 and IL 143 in Edwardsville. IL 157 is the major north–south road through the busiest towns in Madison County – Collinsville and Edwardsville.
The segment of the highway in Cahokia Heights from IL 3 to IL 13 is known as Camp Jackson Road.
The segment of the highway north from IL 13 to approximately Interstate 270 (I-270) is known as Bluff Road, because it roughly follows the eastern bluffs of the Mississippi River which define the American Bottoms in Madison and St. Clair counties.

## History

State Bond Issue Route (SBI) Route 157 originally traveled from Cahokia to Glen Carbon. It was then extended to the Missouri state line at the Jefferson Barracks Bridge in 1946; this was undone by 1958. In 1965, the northern terminus was moved to Hamel, replacing U.S. Route 66 Bypass (US 66 Byp.), which itself was the US 66 mainline prior to 1957.

## Major intersections

| County | Location | mi | km | Destinations | Notes |
| St. Clair | Cahokia | 0.0 | 0.0 | IL 3 / Great River Road – East St. Louis | Southern terminus of IL 157 |
| St. Clair | Cahokia | 2.0 | 3.2 | I-255 / US 50 – Chicago, Memphis | I-255 exit 13 |
| St. Clair | ​ | 5.1 | 8.2 | IL 163 south (Millstadt Rd) – Millstadt | South end of IL 163 concurrency |
| St. Clair | Centreville | 5.6 | 9.0 | IL 163 north / IL 13 – Alorton | North end of IL 163 concurrency; south end of IL 13 concurrency; western terminus of IL 13 |
| St. Clair | Centreville | 6.0 | 9.7 | IL 13 east – Belleville | North end of IL 13 concurrency |
| St. Clair | Centreville | 6.8 | 10.9 | IL 15 – East St. Louis, Belleville | interchange |
| St. Clair | East St. Louis | 9.9 | 15.9 | IL 161 south (St. Clair Ave) – Fairview Heights | Northern terminus of IL 161; interchange |
| St. Clair | Caseyville | 10.2 | 16.4 | I-64 / US 50 – Mt. Vernon, St. Louis | I-64 exit 9 |
| Madison | Collinsville | 16.3 | 26.2 | I-55 / I-70 / US 40 – Chicago, Indianapolis, St. Louis, Memphis | I-55 / I-70 exit 11 |
| Madison | Glen Carbon | 20.6 | 33.2 | IL 162 east – Troy | South end of IL 162 concurrency |
| Madison | Glen Carbon | 20.7 | 33.3 | IL 162 west – Granite City | North end of IL 162 concurrency |
| Madison | Glen Carbon | 21.7 | 34.9 | I-270 – Effingham, St. Charles | I-270 exit 9 |
| Madison | Glen Carbon | 22.1 | 35.6 | Historic US 66 west (Chain of Rocks Road) | Southwestern end of Historic US 66 overlap |
| Madison | Edwardsville | 27.1 | 43.6 | IL 143 west / IL 159 (Main St) | South end of IL 143 concurrency |
| Madison | Edwardsville | 27.6 | 44.4 | IL 143 west (E Vandalia St) | North end of IL 143 concurrency |
| Madison | Hamel | 35.50 | 57.13 | IL 140 (State St) – Alton, Greenville | Northeastern end of Historic US 66 overlap; northern terminus |
| Madison | Hamel | | | Historic US 66 east | Continuation beyond IL 157 |
| 1.000 mi = 1.609 km; 1.000 km = 0.621 mi Concurrency terminus ||||||