Client: Maine & New Hampshire Departments of Transportation
Construction Cost: $159M
Key Facts:
- This new bridge allows larger ships to access the port and shipyard
- 56' vertical clearance in it's "resting" positions allows for 68% fewer bridge openings
- Recipient of 18 design awards
One of the most unique and innovative bridges of our time, the new Sarah Mildred Long Bridge is a vertical lift bridge that serves two modes of transport (rail and roadway) which reach it from double-decker approach spans. It connects Kittery, Maine and Portsmouth, New Hampshire, carrying US Route 1 Bypass and heavy rail. Its vertical lift span is 300’ long and 50’ wide with railroad track running down its center and roadways on both sides. The span ‘rests’ in the roadway position, lowers 50 feet to carry rail, and raises 135’ for tall maritime vessels.
GM2's Complex Bridge staff (formerly with the FIGG Group) partnered with Hardesty & Hanover for this Design JV.