ANGELES NATIONAL FOREST, Calif. (KABC) — Officials have declared a state of emergency after the Bridge Fire exploded Tuesday and swept from Los Angeles County into San Bernardino County. The massive 34,000-acre blaze has already destroyed several homes and is threatening the community of Wrightwood.

The fire, which started in the San Gabriel Canyon area, grew to over 34,000 acres with 0% containment. The fire continued to rage toward Mount Baldy and Wrightwood throughout the day, prompting mandatory evacuations.

San Bernardino County declared a state of emergency Tuesday night and will ask the Board of Supervisors to ratify the measure during an emergency meeting.

“San Bernardino County will use all necessary resources to protect our communities and residents and assist in their recovery,” the county said in a statement.

The wildfire was reported around 3 p.m. Sunday near East Fork and Glendora Mountain Roads, according to officials with the Angeles National Forest. At the time of its initial report, the fire burned 75 acres, but by 7 a.m. the next morning, it had grown to 820 acres.

“Our biggest concern, obviously, is for the community of the Village of Mount Baldy, the Foothill communities from Claremont down to Azusa, and the residents of East Fork,” said John Miller of the U.S. Forest Service.

Evacuation orders for bridge fire

Mandatory evacuation orders were issued for the communities of Mount Baldy and Wrightwood. A total of 30 homes in Wrightwood and Palmdale were ordered to evacuate.

“We urge anyone under evacuation orders to leave now,” said Los Angeles County Fire Chief Anthony Marrone. Evacuation centers have been set up at the fairgrounds in LA County, San Bernardino County and Antelope Valley.

A precautionary evacuation warning was issued for northern Claremont Tuesday evening as the southeastern portion of the bridge fire continues to burn, the city of Claremont announced.

High winds and low humidity are helping the fire spread, Cal Fire said. Firefighters are also hoping that cooler weather will slow the fire enough to gain the upper hand.

“We are really hoping that the recovery at night, with temperatures dropping and humidity rising at night, will help us get this fire under better control,” Miller said.

Which roads are closed?

East Fork Road at Highway 39 was closed, along with Glendora Mountain and Glendora Ridge Road. The California Highway Patrol also closed Highway 39 at the mouth of the canyon due to traffic congestion. Mount Baldy Road was also closed at Shinn Road.

Visitors to the forest were evacuated from the area, the Angeles National Forest announced on social media.

“The safety of our community members is our highest priority and we will continue to assist residents in any way we can. We encourage all residents in the impacted areas who have been ordered to evacuate to heed the orders. If we ask you to evacuate, there is no property worth risking your life for,” said LA County Sheriff Robert Luna.

Air quality in the San Gabriel Valley and Inland Empire was deemed “unhealthy” as a result of the Bridge Fire and the nearby Line Fire, with residents urged to stay indoors or wear a mask when outside.

No injuries were reported. The cause of the fire is not immediately known.

City News Service, Inc. contributed to this report.