A truck smashed into the No. 1 line overpass just north of Dyckman Street in Manhattan on Friday afternoon, crippling train service in the area.

The truck passed by a “low clearance” sign and drove right into the overpass, getting stuck under it about 1:30 p.m.

The MTA turned off power to the third rail while emergency-service crews pulled the truck out from under the overpass. It’s not clear if there’s damage to the overpass, said MTA spokeswoman Amanda Kwan.

There is currently no No. 1 train service between 168th Street and 242 St-Van Cortland Park while officials investigate.