Highway 99 near the Florin Road overcrossing is now open.

(KTXL) — Part of Highway 99 in South Sacramento was shut down Thursday afternoon after a big rig struck a road sign on an overcrossing. 

The California Highway Patrol said the big rig was driving northbound when it hit the 47th Avenue 1 Mile sign that is attached to the Florin Road overcrossing.

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Caltrans is at the scene as the sign is hanging and could potentially fall. 

There was no estimated time of reopening.