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Project Detail

Memorial Bridge Replacement


Location: Kittery, ME & Portsmouth, NH

Description:   This Design-Assist project involved replacing the old span connecting Maine and New Hampshire via US Route 1 over the Piscataqua River with a new vertical lift bridge. It was the first truss bridge of its kind. The electrical systems installed by Boulos powered the lift span machinery, barrier and traffic gates, fire alarm system, speaker system, emergency generator, complete electrical bridge controls package, navigational lighting systems, operator control console, multiple custom designed motor control centers, aviation beacons, IGUS energy chain droop loop cable system, CCTV system, 2 – 125 HP main lifting motors, 1 – 125 HP backup lifting motor, 1- dual speed 25/50 HP auxiliary lifting motor, 2 machine brakes, 2 motor brakes and LED roadway lighting. Privately raised funds were used to purchase additional structural illumination — also installed by ESB – which turned the Memorial Bridge into a local ‘nighttime icon.’

Client:    NHDOT – Maine DOT

Completion Date:   Nov, 2013