PORTSMOUTH, N.H. (AP) New Hampshire transportation officials estimate it will cost $2.5 million to repair a bridge between New Hampshire and Maine that was struck by an oil tanker that broke loose from a pier on April 2.

Transportation spokesman Bill Boynton said the truss elements of the 73-year-old Sarah Long Bridge need to be replaced.

Boynton said Pittsfield, Mass.-based contractor Cianbro has already begun work on steel fabrication, mobilization and staging.

State officials were able to obtain the original design drawings dating back to the 1930s from the Missouri-based company that built the bridge, which will expedite construction of the new truss elements.

The bridge carries 15,000 vehicles per day between Portsmouth, N.H. and Kittery, Maine. Officials in both states say reopening it is a top priority.

The work could take four weeks.

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