Staff, commissioners clash over using SCDOT design manual vs. construction standards

Oct 6, 2026

Commissioners questioned using SCDOT's roadway design manual (a speed/design standard) for private roads and urged the draft to include construction specifications (materials, pavement thickness) in chapter 26 for county enforcement.

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Several commissioners argued the draft leans on a roadway design manual intended to model design speed rather than on a construction manual that sets material and pavement standards. "The SCDOT manual that we're using is a design used for the speed of travel on those roads," a staff or consultant speaker observed, and commissioners said a speed-based design standard could be of limited value on private roads where speed enforcement is not feasible.

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