Light rail service is expected to be curtailed north of Timonium through Thursday's morning rush hour after a truck driver's error tore down the wires that power the trains.

An MTA spokesman said a bus bridge is maintaining service to Hunt Valley as crews work to repair the damage caused when a salt truck driver under contract to Baltimore County went through the Warren Road crossing without lowering the bed on the truck. According to the Baltimore County police, the call came in at 1:09 a.m., shortly after the service was shut down for the night. 

"The truck really ripped things up," said the  MTA's David Clark. He said the MTA had a bus bridge in place in time for Wednesday's morning commute.

A spokeswoman for the Baltimore County Police Department identified the driver as Arnold Criss, 29, of Aberdeen. She said no charged have been filed.

Clark said he doesn't know whether the MTA would seek to recover damages from the contractor. "Right now they''re just trying to get it fixed,"  he  said.