Big Rig Crash Prompts Partial Closure of Eastbound 60 Freeway in Diamond Bar

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Traffic was backed up on the 60 Freeway in Diamond Bar after two big rigs collided on May 15, 2015. (Credit: KTLA)

A SigAlert was issued on the 60 Freeway in Diamond Bar early Friday after a collision involving two big rigs prompted the temporary closure of the eastbound roadway.

The crash occurred around 2 a.m. east of Grand Avenue when a stalled semi was rear-ended by a second big rig, according to the California Highway Patrol’s incident log.

Initially, all eastbound lanes were blocked after the SigAlert went into effect shortly after 1:30 a.m., CHP tweeted.

Crews were working to clean up the scene, and two lanes were reopened by 4:50 a.m., according to CHP.

By that point, the crash and resulting closures caused a traffic backup of about a mile in the eastbound lanes, aerial video over the scene showed.

Initially, all lanes were expected to be closed until 9 a.m., but CHP canceled the SigAlert about an hour before its initial estimate.

The crash occurred amid a late-season storm hitting Southern California, but it was not immediately known if rain or wet roads played a factor in the collision, which was under investigation.