A bridge fire in Crapaud, P.E.I. is causing major headaches for transportation officials.

The bridge on Route 13 went up in flames Monday morning.

Officials say it will cost $400,000 and take months to replace the wooden link.

The bridge is closed to traffic in the meantime.

Darrell Evans of the Department of Transportation and Infrastructure Renewal took soil samples Tuesday as a precursor to tearing out the remains.

"The entire structure is charred on the inside. There are some structural concerns. It was an old structure to begin. So that didn't help matters," he said.

Evans said the final cost is expected to be between $350,000 and $400,000. It will take crews until November to fix it.

"We have pre-cast concrete arches in our yard so we will replace it with one of those structures," he said.

Accident or crime?

David Rossiter, the provincial fire marshal, said the cause is undetermined.

"It could have been an accidental cause as easy as cigarette being thrown out of a vehicle, because at that time the forest fire index was at high," he said.

"The other part of it too is that it might have been a criminal act where someone may have intentionally set it."

He said that might be hard to determine.

"When we go to investigate a fire a lot of time the causes or the instruments that may have started a fire whether they be intentional or accidental often get burnt up as a result of the fire," he said.