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AMES, Iowa  —  All lanes of I-35 are closed near Ames due to a multi-vehicle pileup.

The Iowa State Patrol closed the southbound at the 116 mile marker around 12:30pm.  At 1:30pm the northbound lanes were closed as well.

Nathan Ludwig with the Iowa State Patrol says multiple semis were involved in the crash and it will take some time to clear them from the scene.  DOT traffic cameras show dozens of cars off the road.

Mary Greeley Medical Center reports more than a dozen people were admitted with injuries sustained in the chain reaction crash.

100% of roads in Central Iowa are now partially or completely snow covered.  The Iowa State Patrol is urging everyone to slow down.