Authorities reopened all southbound lanes of I-675 more than two hours after a tractor-trailer fire shut down the interstate Friday morning.

The lanes were reopened at Ga. 42 at 7:30 a.m., according to the WSB 24-hour Traffic Center. A diversion at Ellenwood Road is no longer in place.

The interstate was shut down about 5 a.m. when a tractor-trailer went up in flames. The fire was quickly extinguished, but all southbound lanes remained closed while authorities completed a crash investigation, the Traffic Center reported.

Before the diversion was put in place, some Southside commuters sat in the 2-mile backup for more than an hour, traffic reporter Mark Arum said. Northbound traffic was not impacted by the closure.

The reason for the delayed reopening is not clear. Arum said it was likely the tractor-trailer was carrying a combustible material.

Crews worked to clean up the charred vehicle and investigate the fire on the side of I-675 in Clayton County.

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No one was injured by the blaze, according to Clayton County police.

No further details about the incident were released.

» For updated traffic information, listen to News 95.5 and AM 750 WSB and follow @ajcwsbtraffic on Twitter. 

In other news:

Channel 2 Action News has learned that a man was rushed to the hospital Thursday night after he was shot at the QT gas station on Howell Mill Road.