| Business | Phone |
| Highway Dept Highway 7 & 171amp;, Charleston 29407 | (843) 571-2933 |
| Highway Dept Maintenance Shop 6355 Fain Blvd, Charleston 29406 | (843) 852-4165 |
| Highway Dept Maintenance Shop Wappoo Rd, Charleston 29407 | (843) 852-4165 |
| Highway Dept-Material Lab 2401 Maintanance Way, Charleston 29406 | (843) 740-1693 |
| Highway Dept-Resident Engineer 3525 Pinehaven Dr, Charleston 29405 | (843) 740-1685 |
| Martin Construction Inc 2138 Dorchester Rd, Charleston 29405 | (843) 747-5099 |