Route 605 Feasibility Study

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Project Information

  • Location: Byram, Hopatcong, and Stanhope, New Jersey


  • Client:
    County of Sussex

  • Disciplines: Traffic Studies, Alignment Studies, Alternatives Analysis, Stormwater Management

Engineering services for the preparation of the New Jersey Transportation Planning Authority's (NJTPA) Scoping, Alternative Analysis, and Preliminary Engineer. Work included a regional Traffic Impact Report evaluating 22 intersections, accident history reviews, origin and destination studies, capacity and Level of Service (LOS) analysis and the creation of computer-simulated models of the traffic for the various study years. In addition, various alignments for this 1.5-mile County arterial extension on a new alignment to U.S. Route 206 were studied to determine the preferred alternative. The studies included environmental considerations, historic and cultural evaluations, topographic features, stormwater management, geotechnical and subsurface investigations, roadway geometry, right-of-way, utilities, structure-type studies, and value engineering. The Route 605 Extension was intended to provide access to Route 206 via an interchange inclusive of a fly-over ramp. Acceleration and deceleration lanes were required on Route 206 at the proposed interchange. A No-Build Alternative was ultimately selected by the New Jersey Turnpike Authority.

This project involved the generation of multiple alignments, a structure-type study, a geotechnical investigation, and associated cost projections for this new County roadway. Analysis included traffic, environmental, right-of-way, utility, and stormwater management impacts for each alignment. The Federal Highway Administration and the New Jersey Department of Transportation standards were utilized in developing the Route 605 Extension alignment geometry and preliminary US Route 206 intersection design.

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