Irmo Traffic & Road Conditions

Major Highways in Lexington County

Lexington County sits at the convergence of Interstate 26, Interstate 20, US Highway 76, and SC Highway 60. Together these routes carry essentially every commercial truck, commuter car, and out-of-state visitor that touches Irmo in a given day — which is why a single closure or rolling backup on any one of them ripples across the rest within minutes.

• Interstate 26
  Primary interstate access; runs along Irmo's southern edge, connecting to Columbia (east) and Spartanburg/Asheville (west).
• Interstate 20
  Runs approximately 8 miles south of Irmo; connects to Augusta GA (west) and Florence SC (east).
• US Highway 76
  St. Andrews Road / Broad River Road corridor through Irmo.
• SC Highway 60
  Local connector toward Chapin and Newberry.

Commute Patterns & Regional Drives

Irmo commuters operate on a regional grid, not a city grid. Here is how long the most-driven trips actually take from Irmo:

Freight, Inland Port & Airport Traffic

Add Columbia Metropolitan Airport (CAE) to the picture. It is the region's primary commercial airport, and the drive in from Irmo is a short hop.

All figures sourced from state DOT traffic counts, the state Department of Public Safety fact book, the regional ports authority, and the local airport district — refreshed as new annual reports drop. Live conditions, accidents, and lane closures are above; this section explains the system those incidents move through.