A grass fire Monday afternoon sparked the California Highway Patrol to issue a temporary sig-alert on eastbound Interstate 580, just west of the Stonecut Overpass near Tracy.
The 1.5 acres blaze was contained at about 2:30 p.m., said Aisha Knowles, spokeswoman for the Alameda County Fire Department.
The Camp Parks Fire Department and Cal Fire crews also helped battle the blaze, Knowles said.
In addition, a Cal Fire helicopter was called to the scene.
During the fire, smoke caused visibility issues on the freeway, which prompted the CHP to issue a sig-alert at 1:21 p.m. The far right, slow lane was closed during the fire to allow emergency crews to battle the blaze.
The report of the fire came in at 1:07 p.m. and the sig-alert was lifted at 2:37 p.m.
No injuries or property damage was reported from the fire, Knowles said.