Sarah Mildred Long Bridge Replacement

Kittery, ME

Scope of Work

Cianbro will construct and replace the Sarah Mildred Long Bridge located on the Piscataqua River. The existing steel vertical lift bridge carries the U.S. Route 1 Bypass, providing a critical link between Kittery, Maine, and Portsmouth, New Hampshire. The new 2,800 ft concrete vertical lift bridge will be constructed at a higher elevation than the existing, with a vehicular structure stacked over a railroad level, as well as a longer lift span at 300 ft. Other differing characteristics include long open spans, fewer piers, and wider shoulders.

Project Details

  • Cianbro will:
    • Remove existing structures
    • Construct concrete roadway and railroad superstructures
    • Construct a high-quality and reliable 300-ft long steel lift span
    • Construct four angular lift span towers
    • Construct approach roads and intersections
    • Facilitate and foster collaboration, communication, and partnership with all members of the Project Team and stakeholders
    • Avoid and minimize Project impacts to roadway, railway, and maritime traffic, local business, and communities during construction

Lean, Innovative, and Unique Project Solutions

As a member of the Integrated Project Team (IPT), Cianbro will continue to work collaboratively with the Maine and New Hampshire Departments of Transportation as well as Figg Engineering and Hardesty & Hanover, on New England’s first Construction Manager/General Contractor (CM/GC) alternative delivery bridge project. Cianbro is maximizing the benefits of the CM/GC process by focusing on the design and construction approach to maximize safety, improve schedule, and increase project value, while adhering to the budgetary goals.