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Bridges

Memorial Bridge Replacement

Location
Portsmouth, New Hampshire
Owner
New Hampshire Department of Transportation
Architect
HNTB
Contract Value
$84,000,000

This design-build of a new vertical lift bridge between Portsmouth, New Hampshire, and Kittery, Maine. The project included demolition of the existing bridge, rebuilding and strengthening the existing granite-faced unreinforced concrete piers, and construction of three truss sections that each span 300 feet. The main bridge spans employ a unique “gussettless” Warren Truss using cold-bent plate girders. The 300-foot lift span is driven by electric motors mounted under the lift span and connected by a longitudinal shaft.

300
The 300-foot lift span is driven by electric motors mounted under the lift span.

Additional Experience

Highways

Highways

Transit

Transit

Aviation

Aviation

Walsh

WALSH CONSTRUCTION

929 West Adams Street
Chicago, Illinois 60607
T: 312.563.5400
F: 312.563.5466

Walsh

ARCHER WESTERN

2410 Paces Ferry Road
Suite 600
Atlanta, Georgia 30339
T: 404.495.8700
F: 404.495.8701

Walsh

WALSH CANADA

36 York Mills Road
Suite 302
Toronto, Ontario M2P 2E9
T: 416.849.9000
F: 416.849.9100

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