Cement Truck Crash Ignites Colorado Fire, Threatening 45 Homes Near Yosemite

Key points

• The Colorado Fire started around 1:25 p.m. on Tuesday, September 2, 2026, near Midpines in Mariposa County, California.
• The blaze was triggered by a cement truck that lost control, flipped, and ignited liquid fuel, nearly colliding with an Extranomical Tours bus.
• The fire has burned approximately 250 acres and threatens 45 structures, with mandatory evacuations issued for Rancheria Creek Road, Briceburg, and the Octagon area.
• Highway 140 remains closed from Briceburg to the Bug Hostel, and Rancheria Creek Road is shut down, with PG&E cutting power to 20 customers in the area.
• More than 120 personnel, including 14 engines and 4 helicopters, are on scene, and crews are making progress despite steep terrain.

Background

This incident follows a pattern of wildfire risks in California, such as the Spokane arson fire in August 2026, highlighting the vulnerability of infrastructure and communities to ignition events. The Colorado Fire is the latest in a series of blazes affecting the region, with previous coverage noting the challenges of containment in steep, remote terrain near national parks.

How outlets are covering it

The California Post emphasizes the dramatic dashcam footage from Extranomical Tours, highlighting the near-miss collision and the unknown fate of the cement truck driver. KCRA focuses on the operational progress, noting that crews are slowing the fire's spread and that increasing humidity is expected to aid suppression. myMotherLode.com provides granular details on the evolving evacuation orders, road closures, and resource allocation, including the specific shelters and large-animal evacuation contacts. All sources agree on the 250-acre size and 45 threatened structures, but differ in emphasis: The California Post on the human element, KCRA on the firefighting progress, and myMotherLode.com on the logistical impact on residents.

Why it matters

The Colorado Fire underscores the ongoing risks of wildfire in California, particularly in areas near national parks and along major highways. The incident highlights the vulnerability of infrastructure, such as Highway 140, and the challenges of responding to fires in steep, remote terrain. It also raises questions about the safety of heavy vehicles on narrow roads and the need for improved emergency response and evacuation planning in Mariposa County.

What to watch

Crews will continue to fight the fire throughout the night, with expectations that increasing humidity will slow its progression. Evacuation orders will likely remain in place until the fire is contained, and Highway 140 may remain closed for an extended period. Authorities will monitor the fire's spread and provide updates on the status of the 45 threatened structures and the fate of the cement truck driver.