Massive South Carolina I-95 Pileup Involves Fifty Vehicles and Injures Twelve People

The Santee Fire Service District said the pileup happened around 9 a.m. near I-95’s 100-mile marker.
The crash site is on a heavily traveled stretch: an average of 39,600 vehicles cross Lake Marion on I-95 each day, according to South Carolina Department of Transportation traffic counts.
Queen City News reported that about 11 people with minor injuries were taken to a local hospital.
South Carolina Highway Patrol said that shortly after 5 p.m. on Oct. 1, it expected the southbound closure to last for an extended period and urged drivers to avoid the area if possible.
A massive pileup involving roughly 50 vehicles, including 15 tractor-trailers, shut down Interstate 95 over Lake Marion in South Carolina on the morning of October 1. Post and Courier reported that at least 12 people were injured, with four people rescued after being trapped and one airlifted to a hospital. No deaths were reported. Dense fog reduced visibility to dangerous levels, though WLTX noted that officials have not yet confirmed fog as the official cause. Crews spent more than 20 hours clearing the wreckage, and all lanes reopened around 6 a.m. on October 2.
The crash happened around 9 a.m. near I-95's 100-mile marker on one of the nation's busiest corridors. Post and Courier noted that an average of 39,600 vehicles cross the Lake Marion bridge on I-95 each day, according to South Carolina Department of Transportation traffic counts. By late afternoon on October 1, Post and Courier reported that the South Carolina Highway Patrol expected the southbound closure to last for an extended period and urged drivers to avoid the area.
Early-morning fog rolled across Lake Marion just before 9 a.m., creating near-zero visibility on the I-95 bridge. The Santee Fire Service District responded to calls of a multi-vehicle crash. Drivers had little warning before impact. The chain-reaction collision grew as vehicles behind the initial crash could not see stopped traffic ahead. Within minutes, roughly 50 vehicles — mostly passenger cars but also 15 large tractor-trailers — became tangled on the bridge.
First responders worked urgently to extract occupants from damaged vehicles. Post and Courier reported that four people had been trapped inside their vehicles and required rescue by emergency crews. One person was airlifted by helicopter to a hospital for more serious injuries. Post and Courier noted that about 11 people with minor injuries were taken to a local hospital. The speed of the rescue efforts prevented what could have been a far deadlier incident.
By 5 p.m. on October 1, the South Carolina Highway Patrol announced the southbound closure would extend overnight. Clearing such a massive wreck takes time. Crews removed dozens of vehicles, debris, and fuel spills. The heavily traveled stretch — averaging nearly 40,000 vehicles daily — faced a major backlog. Post and Courier reported that all lanes reopened around 6 a.m. on October 2, just before the morning commute.
The exact cause of the pileup remains under investigation. Dense fog severely reduced visibility and likely played a role, yet officials have not officially confirmed it as the primary cause. Other factors — such as vehicle speed, road conditions, or driver error — may have contributed. The South Carolina Highway Patrol is still gathering evidence and witness statements. The investigation could take days or weeks to complete.
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