All east bound lanes of Ga. 316 near Collins Hill Road and Walther Boulevard in Lawrenceville were re-opened Friday afternoon after a gas leak was stopped.

But the lanes were closed more than two hours, meaning delays could linger in the area into the evening rush hour.

A road crew hit a gas line about 20 feet below ground while boring to install bridge pylons, according to authorities. When firefighters arrived shortly before 1 p.m., they found an active leak and a strong odor of gas, said Capt. Tommy Rutledge, a spokesman for the Gwinnett County Fire and Emergency Services.

The administrative building at Georgia Gwinnett College was temporarily evacuated as a precaution. No injuries were reported, Rutledge said.

An emergency crew from Lawrenceville Gas was able to stop the leak after shutting off two separate valves and allowing residual gas to dissipate. The leak was contained around 3:15 p.m., Rutledge said.