Charleston County Transportation Development

Featured Projects

Savannah Highway Capacity and Intersection Improvements

Capacity and intersection improvements within the Savannah Highway corridor between Savage Road and Magnolia Road.

Airport Connector Road

The Project will provide a new direct access road to Charleston International Airport and a new connection from Dorchester Road to Montague Avenue near the Mark Clark Expressway (I-526).

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Dorchester Road Widening, Michaux Parkway to the County Line

Widening of Dorchester Road from four-to-six lanes between Michaux Parkway and the County Line. The County will advertise this project for the design process in 1st quarter of 2022.

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Glenn McConnell Parkway Widening

Widening of Glenn McConnell Parkway from four-to-six lanes between Bees Ferry Road and Magwood Drive.

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Highway 41 Corridor Improvements

Widening Highway 41 from US 17 to Wando Bridge including intersection improvements at US 17.

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James Island Intersection and Bike/Pedestrian Improvements

Folly Road Bike/Pedestrian Improvements, Central Park Road & Riverland Drive, Fort Johnson Road & Camp Road, and Fort Johnson Road & Secessionville Intersection Improvements

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Main Road Corridor

This project includes improvements to intersections along Main Road, including US 17, River Road/Chisolm Road, and Maybank Highway, as well as widening segments from Bees Ferry to Betsy Kerrison.

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Mark Clark Extension

The purpose of the Mark Clark Extension SCDOT project is to increase the capacity of the regional transportation system, improve safety, and enhance mobility to and from the West Ashley, Johns Island and James Island areas of the Charleston metropolitan area.

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Maybank Highway Improvements

Continuing the two lanes onto Johns Island from the bridge over the Stono River to River Road and extending the additional westbound lane to the existing right turn lane on River Road. Phase 2 substantially completed September 2018.

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North Bridge Bike/Ped Study

The current study is focused on developing a plan for a safe and equitable crossing of the Ashley River and connecting the two communities.

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Northside Drive Re-alignment at Ashley Phosphate

Relocate Northside Drive to intersect with Ashley Phosphate Road across from Spa Road.

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Old Towne District Transportation Improvements

Intersection improvements at Orange Grove Road and Sam Rittenberg, bike and pedestrian improvements throughout the corridor, and improvements to traffic flow.

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Palmetto Commerce Interchange

The Palmetto Commerce Interchange project is being designed to reduce travel times and improve access options, increase traffic mobility in the I-26/Ashley Phosphate Road area and provide more efficient commute options.

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Palmetto Commerce Parkway Phase 3

The PCP3 Project will provide the last segment in a new connector parkway from Ladson Road to Aviation Ave near I-26, and the Joint Base Charleston.

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US 17 Corridor Congestion Improvement Study

Savannah Highway / Ashley River Bridge / Septima P. Clark Parkway Congestion Infrastructure Improvements. Completed May 2021.

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US 78 Improvements

Improving US 78 from US 52 to the Charleston County line.

The County is currently negotiating a contract for design services. Project website expected summer 2021.

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News Alerts

04-28-2023	Traffic Alert: Nighttime Lane closures for Glenn McConnell Parkway for Paving
03-24-2023	Traffic Alert: Daytime Lane Closures on River Road
03-24-2023	Traffic Alert: Nighttime Lane Closures for Glenn McConnell Parkway Paving
03-03-2023	Traffic Alert: Camp Road Sidewalk and Riverland Drive Multiuse Path
03-01-2023	Traffic Alert: Nighttime Lane Closures on Isle of Palms Connector

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APWA Accredited Agency

The purpose of the accreditation program is to provide a means of formally verifying and recognizing public works agencies for compliance with the recommended practices set forth in the Public Works Management Practices Manual. It is a voluntary, self-motivated approach to objectively evaluate, verify, and recognize compliance with the recommended management practices.