ROGUE RIVER — Passers-by might see the occasional large plume of smoke from the Tin Pan Peak burn site but the blaze has been contained and fire crews are starting to head home, officials said.

ROGUE RIVER — Passers-by might see the occasional large plume of smoke from the Tin Pan Peak burn site but the blaze has been contained and fire crews are starting to head home, officials said.

The Oregon Department of Forestry said the roadblocks on North River Road and Twin Bridges Road, which were the primary areas where the fire burned, were opened to the public at 6 p.m. Saturday.

The roadblocks were put in place late Thursday after the 565-acre North River Road fire jumped the roads and charged up Tin Pan Peak.

Fire crews have made significant progress since the fire was sparked by a vehicle driving on Interstate 5 on Thursday afternoon.

Fire crews have moved away from the roads and are pushing deeper into the burned areas to douse hotspots.

ODF said drivers moving through the area might see occasional plumes of smoke rising above the area. But this is not unusual and most likely does not mean the fire has restarted.

The fire charred approximately 565 acres and threatened 40 homes. Structural task forces from Klamath and Lane counties are on scene to assist in protecting threatened structures.

Residents who initially were advised to evacuate Thursday were allowed to return to their homes. Three outbuildings have been destroyed.

Oregon Department of Forestry spokesman Brian Ballou said flames consumed a substantial part of a vinyl fence company's inventory on the south side of North River Road.

The fire is the state's largest wildlands blaze west of the Cascades this year. It consumed a mix of private and Bureau of Land Management property.

A vehicle either dragging something or throwing sparks from its exhaust system most likely started the fire, said Jackson County Fire District No. 3 spokesman Don Hickman.

The owner of the vehicle is not known.

If a particularly large plume of smoke is seen in the area, ODF is asking the public to call the dispatch office at 541-471-3883.

Reach reporter Chris Conrad at 541-776-4471 or email cconrad@mailtribune.com.