Completed Delmar Highway Widening Project

Delemar Highway (SC-165)

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Widening and Improvement Project

The Delemar Highway widening and improvement project consisted of widening 2.3 miles of Delemar Highway (SC 165) from two lanes to five lanes.

The project area extended from Ashley Ridge High School to Carolinian Drive in unincorporated Dorchester County.

In order to improve safety, provide for alternative transportation modes along this corridor, and increase capacity, the following improvements have been made:

Construction of two 12’ through travel lanes in each direction and a 15’ (typ.) center median between the travel lanes to accommodate turning traffic;

Construction of auxiliary turning lanes; construct 4’ wide dedicated, marked bicycle lanes in each direction; construct a 8’ wide sidewalk to provide pedestrian access for Ashley Ridge High School;

6’ wide grassed shoulders constructed for safety and emergency access; drainage improvements will include replacement of existing pipe culverts and driveway pipes, and construction of ditches;

And an existing double 8’ x 5’ box culvert extended 10 feet in order to accommodate the widened roadway.


The project was funded through:

  • $17 Million grant from the South Carolina State Transportation Infrastructure Bank
  • $1.505 Million in Dorchester County Capitol Funds
  • $1, 095,000 in CTC Funds

Project Updates

Friday, January 19, 2018: Final inspection 

Wednesday, January 17, 2018: Final pavement markings completed and all signs installed.

Thursday, December 14, 2017: Substantially Completed.

Monday, November 27, 2017 - Final markings being installed. Estimated to be completed, by the beginning to mid December 2017. Substantial completion of project will be December 2017, eight months ahead of schedule. All lanes open to traffic.

Monday, November 13, 2017 - Permanent signage has been installed. All lanes are open in both directions.

Tuesday, November 7, 2017 - Final surface course has been completed, Driveway tie-ins nearing completion.

Sunday, October 1, 2017 - All subgrade work has been completed, final surface course nearing completion and multi-use path subgrade work nearing completion.

Tuesday, July 14, 2017 - All utilities have been relocated, all drainage work has been completed and the last of subgrade work and the multi-use path are nearing completion.

Wednesday, March 8, 2017 - Muck and Fill and Subgrade work ongoing.

Monday, November 28, 2016 - Land Clearing Operations began.