This article was accepted into the corpus but its outbound wikilinks were never NER-processed — typical at the deepest BFS hop or when the run's entity cap was reached. No expansion funnel to show.
| Illinois Route 157 | |
|---|---|
| State | IL |
| Type | IL |
| Route | 157 |
| Length mi | 38.43 |
| Established | 1924 |
| Direction a | South |
| Terminus a | Collinsville |
| Direction b | North |
| Terminus b | Hamel |
| Counties | Madison County, St. Clair County, Montgomery County |
Illinois Route 157 Illinois Route 157 is a north–south state highway in southern Illinois connecting communities in the St. Louis metropolitan area, Madison County, and the Illinois portion of the Metro-East. The route links the riverfront and industrial corridors near Mississippi River crossings to suburban and exurban nodes adjacent to Interstate 55, Interstate 64, and other arterial highways. It serves as a local connector for commuters, freight, and regional traffic between Collinsville, Bethalto, Edwardsville, Glen Carbon, Rosewood Heights, and Maryville.
The alignment begins near Collinsville close to the Lewis and Clark Bridge approaches and the Chain of Rocks Bridge historic corridor, proceeding north through mixed residential and commercial districts that interface with Interstate 255 and the St. Clair County Transit District. Within Edwardsville the roadway passes landmarks tied to Southern Illinois University Edwardsville and municipal facilities near the Madison County Courthouse, transitioning through suburban centers adjacent to Illinois Route 159 and Illinois Route 143. Northbound, the corridor traverses the Metro-East Regional Airport catchment and crosses rail lines used by Union Pacific Railroad and BNSF Railway, serving industrial parks linked to Granite City supply chains and Scott Air Force Base support routes. Farther north the highway connects to the exurban ring near Hamel intersecting with Interstate 55 and local arterials that feed commuters toward Downtown St. Louis, Gateway Arch National Park, and manufacturing clusters in the St. Louis County area.
The corridor originated during early 20th-century route numbering associated with the Illinois State Highway System and regional planning influenced by the Good Roads Movement and interstate river commerce centered on the Mississippi River. Initial designations in the 1920s aligned with state efforts to link county seats such as Edwardsville and Collinsville to national routes like U.S. Route 66 and U.S. Route 40. Mid-century improvements paralleled expansion of Scott Air Force Base and the growth of the St. Louis metropolitan area, prompting resurfacing projects funded through partnerships with the Illinois Department of Transportation and federal aid under programs influenced by the Federal Aid Highway Act of 1956. Later decades saw corridor adjustments to accommodate suburbanization driven by employment centers such as Abraham Lincoln Capital Airport-area logistics and retail development anchored by national chains headquartered near Edwardsville and Collinsville. Preservation efforts for historic bridges and integration with regional transit initiatives involved stakeholders including the Madison County Transit and the Bi-State Development Agency.
The route intersects a series of arterial and limited-access highways that structure regional mobility: junctions with Illinois Route 13 in the south near Collinsville, crossing with Interstate 255 close to the Gateway Galleria retail district, intersections with Illinois Route 159 and Illinois Route 143 within Edwardsville and Glen Carbon, grade-separated connections adjacent to U.S. Route 40 corridors, and northern terminations that meet Interstate 55 near Hamel, facilitating access toward Springfield and Chicago via the interstate network. Rail crossings interface with corridors used by Amtrak, Union Pacific Railroad, and BNSF Railway, affecting signalized intersections and grade separation projects coordinated with the Illinois Commerce Commission.
Planned and proposed projects impacting the corridor encompass resurfacing and capacity upgrades coordinated by the Illinois Department of Transportation with funding mechanisms linked to federal programs administered under U.S. Department of Transportation initiatives. Local capital improvements aim to enhance access to employment clusters tied to Scott Air Force Base, logistics nodes serving St. Louis Lambert International Airport traffic patterns, and transit-oriented development near Southern Illinois University Edwardsville campuses. Proposals under regional planning bodies including the East-West Gateway Council of Governments consider multimodal enhancements, bicycle and pedestrian linkages funded by grants from the Federal Highway Administration, and intersection modernization influenced by research from institutions like University of Illinois Urbana-Champaign transportation centers.
Traffic composition reflects commuter flows to Downtown St. Louis and industrial freight movements to facilities serving Granite City and other manufacturing sites, with peak-hour congestion concentrated at interchanges with Interstate 255 and Illinois Route 159. Roadway performance metrics collected by the Illinois Department of Transportation and analyzed in coordination with the Federal Highway Administration indicate variations in average daily traffic where commercial retail nodes near Collinsville and Edwardsville generate higher volumes, while northern segments toward Hamel exhibit lower rural traffic counts. Safety programs and access management strategies coordinate with the National Highway Traffic Safety Administration guidelines and local law enforcement agencies to address crash hotspots and freight routing.