South Carolina Interstate Corridor Guide

South Carolina Weigh Station Master Table

South Carolina operates 13 weigh stations across its major interstates. The state uses a color-coded sign system: GREEN means the station is open, RED means closed. Simple and trucker-friendly.

PrePass and Drivewyze are both active at South Carolina stations. The state Size & Transport Police (STP) handles all CMV enforcement across all 46 counties, including a specialized HAZMAT/Level VI Team trained for Savannah River Site nuclear material transport.

Speed Limits

South Carolina has no differential truck speed limit. Trucks follow the same posted speeds as cars:

I-95: Georgia to North Carolina (199 Miles)

Flat, straight, and largely rural. I-95 through South Carolina is one of the easier segments of the entire Eastern Seaboard, but the monotony creates genuine fatigue risk on long runs.

Hardeeville (MM 4): Weigh stations just north of the Georgia border. First checkpoint after crossing the Savannah River.

Canadys (MM 74): Weigh stations in the Lowcountry. Light traffic between stations makes this a quick segment.

Florence (MM 157-170): The I-95/I-20 junction creates a natural distribution hub. Good truck stop infrastructure and parking availability. Florence is where east-west and north-south freight streams cross.

Dillon (MM 190-198): Approaching the North Carolina border. Speed enforcement increases near the state line.

I-26: Charleston to Spartanburg (220 Miles)

I-26 is the freight spine of South Carolina, connecting the Port of Charleston to the inland Southeast. Heavy drayage traffic runs this corridor daily, especially between the port and the I-26/I-85 junction at Spartanburg.

Charleston Port Area (MM 210-220): Drayage traffic is heaviest during terminal gate hours. Expect congestion on the final approach to port terminals during morning openings.

Harleyville (MM 173-174): Weigh stations east of the I-95 crossing. This checkpoint catches port-bound traffic.

Columbia (MM 100-115): The state capital generates moderate congestion, particularly at the I-26/I-126/I-20 interchange complex.

Spartanburg (MM 15-22): The I-26/I-85 junction is where port freight meets Upstate industrial traffic. This interchange handles significant volume.

I-85: Georgia to North Carolina (106 Miles)

South Carolina’s industrial heartland. The I-85 corridor through the Upstate is dense with automotive manufacturing, tire plants, and distribution operations.

Fair Play (MM 9): Weigh station near the Georgia border. Northbound traffic from Atlanta enters here.

Greenville/Spartanburg (MM 50-70): The core of the Upstate industrial corridor. BMW’s Greer plant, Michelin NA headquarters, and a dense network of automotive suppliers generate heavy truck traffic. The Southern Connector (I-185) is the only toll road in South Carolina, running through the Greenville area.

Gaffney to NC border (MM 90-106): Approaching Charlotte via I-85. Traffic density increases approaching the state line.

I-77: Columbia to Charlotte (91 Miles)

A shorter corridor connecting South Carolina’s capital to Charlotte, North Carolina.

Rock Hill (MM 85-89): Weigh stations near the NC border. Rock Hill has seen significant warehousing growth driven by Charlotte metro expansion southward.

I-20: Augusta to Florence (141 Miles)

The east-west artery through central South Carolina.

Aiken County: Proximity to the Savannah River Site means nuclear material transport occurs on connecting routes. SC’s specialized HAZMAT/Level VI Team operates in this area. Follow posted routing for restricted materials.

Steedman (MM 35) and Lexington (MM 53.5): Weigh stations bracketing the Columbia metro area.

Florence (MM 141): Eastern terminus at the I-95 junction. Good staging area for north-south transitions.

Toll Roads

South Carolina is nearly toll-free. The only toll facility is the Southern Connector (I-185) in Greenville:

Palmetto Pass is electronic tolling. All major interstates in South Carolina are free.

Connecting Corridors

I-95 continues south into Georgia and north into North Carolina. I-85 connects to Atlanta southbound and Charlotte northbound. I-26 is the primary route from the Port of Charleston to the Upstate industrial corridor.