YEMASSEE — The southbound lanes of Interstate 95 are back open this morning after a semi hauling two trailers overturned.

The wreck happened about 5:30 a.m. near mile marker 38. Authorities were initially worried about a chemical leak, which later turned out to be a non-hazardous cleaner that spilled, according to Barry McRoy, director of Colleton County Fire and Rescue.

The lanes were reopened about 9 a.m., authorities said.

Yemassee Fire Chief Harry Bennett said one of the trailers contained three 500-pound cylinders of hydrogen-nitrogen that were not leaking and packages of fluorescent light bulbs. The cleaner was in a second trailer blocking the roadway, McRoy said.

The road was cleared once it was determined the leaking chemical was not hazardous, he said.