Schoolhouse Trail over Illinois Route 111

Creating safe and seamless connections for cyclists and pedestrians is at the heart of Madison County Transit’s (MCT) mission. The Schoolhouse Trail is a popular segment of the MCT Trail System, connecting Madison, Pontoon Beach, Collinsville, Maryville, and the west side of Troy, while also linking to the MCT Nature Trail and Goshen Trail. However, its crossing at Illinois Route 111 created safety and convenience concerns due to it being a busy roadway with high-speed traffic, continuous turning movements, and long pedestrian wait times.

To improve safety and maintain connectivity, MCT partnered with Oates Associates to conduct a conceptual feasibility study for a grade-separated crossing at this location. The study evaluated two alternatives—an underpass (box culvert) and an overpass (bridge)—to determine the most practical and effective way to eliminate the at-grade conflict. The analysis focused on roadway characteristics, topography, alignment adjustments, connectivity impacts, user experience, traffic impacts during construction, security considerations, and long-term maintenance needs, ensuring the proposed solution enhances safety while preserving the trail’s role as a vital regional connector.

As MCT’s first signature bridge, the project required a high level of coordination and visualization to bring the concept to life. Detailed 3D renderings were developed to help the MCT Board and stakeholders clearly understand the proposed design and its impact within the corridor, supporting informed decision-making throughout the planning process.

Grade separation was determined to significantly enhance safety by eliminating conflicts between trail users and motor vehicles on IL Route 111. An overpass was selected as the preferred option because it avoided the drainage and flooding concerns associated with the area’s high water table, could be constructed with limited interruption to traffic, and reduced security concerns compared to an underpass.

The new bridge, designed by Oates Associates, eliminates the safety risks associated with at-grade crossings, allowing trail users to cross IL Route 111 without interacting with vehicular traffic. Beyond safety, its design complements the surrounding landscape and adds a visually appealing element to the corridor with accent lighting and branded signage. This project underscores MCT’s commitment to expanding safe, accessible active transportation options while strengthening long-term trail connectivity for the entire community.