The closure was due to a spill of "corrosive liquid," Los Angeles County fire officials said.
At least seven cars were involved in the Torrance crash, which left two people with major injuries.
One motorcyclist was killed and another was critically injured in the crash on Aviation Boulevard over the weekend.
Redondo Beach police are asking motorists to avoid the area.
The suspensions will continue through the fall to allow work to continue to connect Green Line tracks with the new Crenshaw/LAX Line tracks.
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Officers are searching the area for possible evidence that may have been tossed from a vehicle that was pulled over.
Motorists are advised to avoid the area.
Authorities are on scene working to resolve the hazard.
A biker suffered a severe brain injury after hitting a series of potholes in the South Bay.
Drivers are being advised to use alternate routes.
The road is closed due to construction and should take approximately two hours to reopen, police said.
No injuries have been reported as a result of the crash.
Redondo Beach police are asking people to avoid the area.
Police and Torrance firefighters are on the scene. (BREAKING)
Pacific Coast Highway is closed in both directions, according to police.
The SigAlert was issued at 12:29 p.m.