San Diego police and firefighters responded to the report of a broken gas line near Grant Hill.
Two homes were evacuated after the gas leak was reported at 8:10 a.m.
A construction crew working on Imperial Avenue near 32nd Street, west of Interstate 15 ruptured the gas pipe, police and firefighters said.
Officers were conducting traffic control. Crews from San Diego Gas & Electric were enroute to the scene.
Officials said no one was injured. The area was expected to be cleared by 10 a.m.