GOLDEN, Colo. (CBS4) – A semi-truck fire sent up a large, black plume of smoke near Golden and Lakewood on Wednesday afternoon. Colorado State Patrol said all eastbound lanes of Interstate 70 near Colorado Mills Parkway – Denver West.

Two lanes were reopened as of 5:15 p.m. The far right lane is expected to be closed for “an extended period” of time.

(credit: Colorado State Patrol)

The truck appeared to be carrying a large load of lemons, possibly thousands of lemons.

(credit: Colorado State Patrol)

It’s not clear what caused the fire. The driver is said to be okay.

Firefighters appeared to be on the scene.

Danielle Chavira