Pittsfield contractor Cianbro has won a $27 million contract to perform work and dock repairs at the Portsmouth Naval Shipyard in Kittery.

The award was announced jointly by U.S. Sens. Susan Collins and Angus King.

“The work done at Portsmouth Naval Shipyard has a direct impact on our national security, and this contract for Cianbro will help make sure that the shipyard is well-equipped to continue in its important mission,” they said Friday. “We commend the Navy for investing in PNSY, our national defense, and the Maine economy.”

This $26,969,000 contract will support replacement of the caisson at PNSY’s dry dock number No. 3. The work will also provide repairs to the concrete entrance structures of the dry dock, and is expected to be completed by May 2019.

Collins is a senior member of the Senate Defense Appropriations Subcommittee, and King is a member of the Senate Armed Services Committee.