H&H provided preliminary and final design, along with design support during construction, including providing a preliminary design report, plans, design, and design check computations, ratings, specifications, and cost estimates for the replacement bridge located on U.S Route 1 Bypass between Kittery, ME, and Portsmouth, NH – a combined highway and railroad movable bridge. H&H was responsible for the movable bridge concept study and report and design for the fender system, lift pier substructure units, lift piers, lift bridge towers and lift span superstructure, operator’s house, mechanical room, electrical room, mechanical operating system, and electrical operating system. The upper portion of the bridge provides vehicular and pedestrian access, while the lower portion provides railroad service. The railroad portions of the bridge were designed in accordance with local, state, and AREMA codes and guidelines. The project was completed with the CMGC process.

The concept developed included many innovations including the first application of pre-cast post-tensioned concrete for the lift span towers, a lift span comprised of steel boxes with an FRP wind fairing, operating machinery located in the tower bases, and a single level 300-foot-long lift span with separate seating locations for the double level highway and rail bridge approaches.

Construction kicked off on January 5th, 2015, and the bridge opened to traffic in March 2018. The project has won more awards than any other project in firm history.

US DOT Awards $584 Million in Latest TIGER Grant Round


Project Accolades

2022 CRSI Award - Bridge Category
Concrete Reinforcing Steel Institute (CRSI)
2020 Award of Excellence
Portland Cement Association (PCA) - 2020 Concrete Bridge Awards
National Grand Award
American Council of Engineering Companies (ACEC National) Engineering Excellence Awards
Bridge/Highway Project of the Year
Engineering News-Record Best of the Best 2020
Overall Winner Award
ACEC New Hampshire – Engineering Excellence Awards
Bridge #2
Roads and Bridges Magazine Top Ten Projects of the Year
Special Award of Merit
International Bridge Conference
2020 Prized Bridge Award (National) – Movable Span
American Institute of Steel Construction and the National Steel Bridge Alliance
Project of the Year
Engineering News Record, New England Region
2019 Bridge Finalist, Project of the Year
National Council of Structural Engineers Associations
2019 ASBI Bridge Award of Excellence
American Segmental Bridge Institute
Excellence in Construction Awards-The Chairman’s Award
Associated Builders & Contractors NH/VT