Weldon Spring Road Phase I

With ongoing high density residential development along Weldon Spring Road, Oates Associates partnered with the City of O’Fallon to improve the corridor between Technology Drive and Valleybrook Drive. For years, this stretch of roadway had struggled to keep pace with the community around it. The narrow lanes, deteriorating pavement, and poor drainage created daily challenges for residents, school traffic, and local businesses. At Crusher Drive, the steep grade and limited visibility at the stop-controlled intersection made turning movements difficult and raised safety concerns for both drivers and pedestrians.

The project was designed to address these long-standing issues while preparing the corridor for future growth. The roadway was reconstructed and widened to a three lane, 39-foot-wide section with pedestrian accommodations. Near Crusher Drive, the alignment was raised up to 10 feet to platform the intersection, allowing for the installation of a single lane roundabout that improves sight distance and enhances safety and traffic flow.

Additional improvements included an enclosed storm sewer system, box culvert reconstruction, drainage modifications, utility relocations, ADA upgrades, and retaining walls. Together, these upgrades transformed a once outdated and congested corridor into a safer, more accessible route that better serves the needs of a growing community.