TORONTO -- Ontario's Ministry of Transportation says two lanes of a failed bridge on a northern section of the Trans-Canada Highway are expected to open Thursday morning.

The steel decking on the recently built Nipigon River Bridge lifted about 60 centimetres on Jan. 10, which forced a 24-hour closure that severed the link between east and west.

One lane was re-opened the following day, but has caused about a five-minute delay for cars and trucks to cross the bridge.

Northern Development and Mines Minister Michael Gravelle says the investigation into the cause of the problem on the $106 million bridge project is ongoing.

He says he will share the results of the investigation when it's completed.