The Darrell Road at Neville Road/Case Road Roundabout Conversion project in Wauconda Township, Illinois, is a key safety and mobility upgrade for an area expected to see traffic volumes double over the next two decades. By replacing two existing T‑intersections with a single‑lane modern roundabout, the project improves sight lines, reduces conflict points and enhances safety for more than 10,000 daily users. The design also incorporates Complete Streets features, including new sidewalk and bicycle connections that link directly to the Black Crown Forest Preserve. STV provided construction management services for the Lake County Division of Transportation, supporting the delivery of a more efficient and accessible regional roadway.
What challenges did STV address?
Construction required careful coordination of drainage improvements, asphalt reconstruction and a full detour to maintain local access. Moisture and erosion were persistent challenges due to the surrounding ditch network, demanding innovative subgrade drainage solutions and soil treatment to stabilize topsoil. Utility coordination and communication with residents and businesses were also essential to ensure transparency and minimize disruptions.
What solutions did STV deliver?
STV managed construction sequencing, submittal reviews and field oversight to maintain schedule and quality. The team coordinated drainage installation, detour routing and roadway reconstruction while addressing stormwater and soil challenges through enhanced drainage layers and erosion control measures. STV supported a virtual pre‑construction open house to engage the community, ensuring project information was clear and accessible.
How does this project benefit the community?
The roundabout improves safety, moderates speeds and reduces crash risk while creating smoother, more predictable travel. New bicycle and pedestrian paths expand local mobility options and strengthen access to the regional forest preserve. Delivered ahead of schedule, the project enhances daily travel and supports long‑term growth in Lake County.
Key stats and accolades
- Conversion of two T‑intersections into a modern roundabout
- More than 10,000 daily users served
- Complete Streets upgrades with sidewalk and bicycle paths
- Moisture and erosion mitigation through enhanced subgrade drainage
- Delivered ahead of schedule
