(FOX40.COM) —Cal Fire and the Placer County Fire Department firefighters are on the scene of a crash on the westbound Interstate 80 near Alta, blocking both lanes.

Fire personnel reported that there are multiple semi-truck crashes in the Alta area with major injuries.

Caltrans said that traffic is being held at Blue Canyon.

Currently, the I-80 westbound remains closed off. I-80 eastbound is also closed off for emergency vehicles to access the collision scene. Caltrans said there is no estimated time for the freeway to open.

(IMAGE: Cal Fire)

(IMAGE: Cal Fire)

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