The southbound lanes of I-75 in southern Henry County have reopened, nearly six hours after a tractor trailer hauling a hazardous chemical overturned south of Ga. 155.

The truck was carrying methyl bromide, according to the state Department of Transportation. Some of the chemical, commonly used in pesticides, spilled into the left lane, the DOT said.

The 5:30 a.m. crash also caused extensive damage to the guardrail. Henry County authorities said the driver of the truck was taken to Piedmont Henry Hospital for treatment of injuries that were not life-threatening.

Authorities forced southbound traffic off the interstate and onto Ga. 155 at Exit 216 until about 11:20 a.m., when I-75 was reopened.