South Fork Bridge Replacement-Route 340/522

Location Warren County, VA

Duration December 2013 – December 2017

This $48 million project, for the Virginia Department of Transportation, includes the complete reconstruction of large bridge structures carrying Route 340 over the South Fork of the Shenandoah River and the Norfolk and Southern Railroad. The new bridge structure will be constructed and the existing bridge will be demolished. The project includes significant excavation, drainage, base, and asphalt paving to construct new roadway approaches to the bridge, as well as new interchanges on the approaches to the bridge. The project also includes associated street lighting on both the roadway and bridge, new signalized interchanges, guardrail installation, signage, and landscaping.

Key Challenges & Project Details

  • The new bridge structure is eight spans, including one pier in the center of the river.
  • The new 1,910-foot bridge will have six lanes and will accommodate bicycle and pedestrian traffic.
  • A rock causeway and temporary bridge will be used to access the construction for the river spans.
  • The new bridge piers will be built in two phases and include very complex formwork needed for web wall construction between the main pier shaft components.
  • A borrow pit has been established adjacent to the project, which will furnish the 170,000 CY of imported embankment material needed to construct the new approaches and interchanges.
  • Large storm drain installation is performed with deep cuts through cultural resource areas and via the use of a jack and bore tunnel under the existing Norfolk Southern Railroad.
  • Major challenges include construction of storm drain and bridge piers in the areas restricted by cultural resources and access complications on the Front Royal end of the bridge.
  • This project will alleviate severe congestion in the bridge corridor and improve safety.
  • Due to access restrictions on the town end of the bridge, VDOT detailed a causeway that provided access for bridge construction from one end only.
  • Wagman proposed and will utilize a very different causeway configuration that will allow access for bridge construction from both ends.
  • This project includes grooving of the bridge surface per the Owner’s specifications.
    • A very new, innovative interchange design, called a Quadrant Roadway Intersection, is being constructed at the intersection of Route 55 and Route 340. This intersection will provide movement in all directions without the use of any left turns from any direction.