EASTVALE, Calif. — A big rig overturned Monday at the Interstate 15/60 Freeway interchange in Eastvale amid intense Santa Ana winds, forcing a closure of a connector ramp.

The tractor-trailer went over about 9:15 a.m. on the transition from southbound I-15 to the eastbound Pomona (60) Freeway, according to the California Highway Patrol.

The agency said that winds were gusting close to 50 mph at the time. The area is in a wind-prone location to the south of the Cajon Pass.

The semi, which was empty, was left almost hanging off of the connector ramp, the CHP said.

The trucker was not injured.

Officers shut down the connector and detoured motorists trying to head eastbound farther south into Jurupa Valley.

A SigAlert was issued at 9:40 a.m. due to the closure, and remained in effect as of 1 p.m.

The CHP anticipated a full reopening of the transition shortly after 2 p.m.

Tow crews using heavy wench lines worked to upright the rig.