Dense fog triggers massive 65-vehicle pileup on I-95 bridge in South Carolina

Key points

• The crash occurred on I-95 near mile marker 100 in Clarendon and Orangeburg counties, specifically on a bridge over Lake Marion.
• Dense fog drastically reduced visibility, causing drivers to collide in a chain reaction.
• Fifteen 18-wheelers and 54 other vehicles were involved in the wreckage.
• Four people were trapped in their vehicles, and at least two suffered serious injuries.
• One individual was airlifted to a hospital; no deaths were reported.
• Southbound lanes remained closed for extended periods, with traffic rerouted at Exit 102.

Background

This incident highlights the dangers of sudden weather changes on major interstate corridors. While previous archive articles discussed vehicle fire risks from battery and gasoline systems, this event was primarily caused by environmental visibility issues rather than mechanical failure. The location near Lake Marion added a significant risk factor, as witnesses noted the proximity of the crash to the water below the bridge.

How outlets are covering it

Outlets reported varying totals for the number of vehicles involved, reflecting the chaotic nature of the scene. WYFF initially reported 40 vehicles, while Live 5 News cited 50. WIS News 10 provided the most detailed breakdown, stating 69 vehicles total (15 trucks and 54 cars), though their headline mentioned 65. All sources agreed on the involvement of 15 tractor-trailers. WIS News 10 emphasized the fog as the primary cause and included witness accounts of the chaos, whereas WCIV focused on the traffic impact and the closure of lanes near the I-26 interchange. Live 5 News highlighted the entrapment and injury statistics from the Santee Fire Service District.

Why it matters

The incident underscores the critical safety risks posed by sudden fog on high-speed interstate bridges. The massive scale of the pileup, involving commercial trucks, demonstrates how quickly a minor visibility issue can escalate into a major emergency requiring extensive cleanup and medical response. It also highlights the logistical challenges of clearing such scenes, which can lead to prolonged highway closures and significant traffic disruptions in the region.

What to watch

Emergency crews continued clearing the roadway into the evening of October 1, 2026. Authorities urged drivers to avoid the area and use alternate routes. The condition of the patient airlifted by helicopter remained unknown, and further updates on the investigation into the crash were expected.