Charleston County Transportation Development and the City of Charleston are partnering to develop a long-range plan to ease traffic congestion and improve travel for all modes of traffic along a three-mile stretch of U.S. 17 in the City of Charleston. 



The project study area has been defined as the corridor of U.S. 17 in the City of Charleston, from Avondale Avenue at Savannah Highway, across the Ashley River Bridges and through the Crosstown to its connection with I-26 near Coming Street. The area includes intersections and interchanges with major arterials such as S.C. 61, Wesley Drive, Folly Road, Lockwood Blvd. and the James Island Connector.

The focus on this three-mile section of U.S. 17 derives from previous and in-progress regional planning efforts that identify it as a priority route for mobility improvements.

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Congestion ImprovemenT ALTERNATIVES

Due to existing conditions along the project study area, roadway widening is a technically and financially challenging alternative. As such, the Study will consider and evaluate congestion alternatives in the following categories, including but not limited to the following potential improvement strategies:

1. Travel Demand Management

  • Carpool, vanpool, ride-share

  • Employer based incentives

  • Mass transit incentives

  • Congestion pricing


3. Traffic Operations

  • Traffic signing and pavement marking

  • Real-time travel information system

  • Road space allocations

  • Express lanes

  • Corridor lighting


  • Bike and pedestrian improvements

  • Park & Ride development

  • Express bus and bus rapid transit


4. Capacity improvements

  • Intersection improvements

  • Interchange improvements

  • Bridge replacements

  • New and enhanced bike and pedestrian improvements

  • Roadway realignments

  • Roadway widening

Project Schedule

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