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Dorchester County, SC (April 25, 2026) – A serious crash has shut down eastbound lanes of Interstate 26 near mile marker 172 in Dorchester County.
Emergency units responded to the scene on Saturday, April 25, where the roadway was blocked following the collision. Traffic is being diverted off Interstate 26, with drivers directed to use US-15 and US-178 as an alternate route around the incident area.
Officials have not released details about the number of vehicles involved or whether anyone was hurt. The cause of the crash has also not been confirmed. Authorities continue to investigate the cause of the crash.
We are thinking of those affected.
How Highway Closures and Detours Affect Traffic Flow
When a major highway is blocked after a serious crash, traffic must be rerouted to keep vehicles moving. Detours often use nearby highways or local roads to guide drivers around the scene. These alternate routes can quickly become crowded, especially during busy travel hours.
Road closures also affect emergency response and cleanup efforts. Crews need space to assist those involved and remove damaged vehicles, which can take time depending on the severity of the crash. During this period, drivers may experience extended delays or slower travel speeds.
Once the roadway reopens, traffic may still take time to return to normal. Congestion can linger as backed-up vehicles gradually clear the area.
