Lake County Division of Transportation

Darrell Road Phase II

Roadway Reconstruction and Roundabout Design

This project involves the reconstruction of Darrell Road from Case Road to Fisher Road and the construction of three new roundabouts. Civiltech provided Phase II Design Engineering services. The design was developed from the Preferred Alternative resulting from Civiltech’s Phase I Study which was completed in 2022.

A Single Roundabout Replacing Two Intersections

Neville Road and Case Road met Darrell Road in T-intersections located just 300 feet apart. Case Road has been realigned to the north to provide a single intersection with Darrell Road and Neville Road at a new, single lane roundabout. The Darrell/Case/Neville Roundabout was completed in the 2023 construction season.

Two Additional Roundabouts

The Dowell Road/Darrell Road intersection exist at a very tight angle. Dowell Road is being realigned to intersect Darrell Road at closer to 90 degrees, and the intersection is also being replaced with a roundabout. At the northern intersection (Fisher Road), a third roundabout is being constructed to replace the existing T-intersection. These roundabouts will be constructed in the 2025 construction season, depending on property acquisition and project readiness.

Continuation in the Grand Illinois Trail

A 10-foot wide shared-use path is being constructed along the east side of Darrell Road between the Case/Neville roundabout and the Fisher roundabout. The section of path between Dowell Road and Fisher Road is part of the planned Grand Illinois Trail. The pedestrian crossing at Dowell Road will allow the IDNR to continue the path construction to the west into McHenry County.

Detention Basins and Retaining Walls

The project crosses three watersheds and is being designed to meet the requirements of the Lake County Watershed Development Ordinance, including the construction of four detention basins. Retaining walls are being installed near the Fisher Road intersection to limit impacts to the adjacent wetlands and floodplains.

Lighting the Way

Street lighting is being installed at each of the roundabouts. Because of the proximity of the roundabouts, continuous lighting is being provided between Dowell Road and Fisher Road. Cameras are also being installed at each intersection to allow the County to monitor traffic from their Transportation Management Center.

This Project Incorporates the Following:

  • Intersection safety and operational improvements
  • Bicycle and pedestrian facility design
  • Roundabout design
  • Utility coordination
  • Streetlight design
  • Electronic traffic monitoring
  • Detention basin construction
  • Grand Illinois Trail continuation

Scope of Services

  • Roundabout and Intersection Design
  • Drainage Design
  • Lighting Design
  • Preparation of Contract Plans, Specifications & Estimates
  • Retaining Walls
  • Stormwater Management



Learn more about this project and its related services.

Contact Jon Vana