A truck operated by a P.E.I. trucking company, Bulk Carriers, was involved in a serious accident in Maryland Friday night, says the Maryland Transportation Authority Police.

Police say the crash on the Bay Bridge involved three vehicles: the truck, operated by Bulk Carriers, and two cars.

One of the cars went off the bridge and into the water of Chesapeake Bay.

The car's driver was able to get free of the sinking car and swam to a bridge pier where she was rescued.  Transportation Authority Police said she was released from Maryland Shock Trauma on Saturday.

Police 1st Sgt. Jonathan Green said the Bulk Carriers truck driver was not injured, nor were the two people in the other vehicle in the accident.

In an email to CBC News, Bulk Carriers president and CEO Jack Kelly said the company would cooperate fully with  authorities involved in the investigation.

"Bulk Carriers is pleased to hear early reports indicate there has not been any loss of life or serious personal injury to anyone involved in the accident. Bulk Carriers is very proud of its excellent safety record which the company works diligently to maintain." Kelly added.

Kelly said the company would not make further comment until the investigations are complete.

The Transportation Authority's Twitter feed shows the accident closed eastbound lanes of the bridge for around five hours. Maryland Transportion Authority Police are asking for witnesses to the crash to come forward.