National Steel Bridge Alliance

Sarah Mildred Long Bridge

National Award -- Movable Span


Project Team

  • Fabricator: Casco Bay Steel Structures, Inc., South Portland, Maine *AISC MEMBER* *AISC CERTIFIED*

  • Steel erector and general contractor: Cianbro, Pittsfield, Maine *AISC MEMBER* *AISC CERTIFIED*

  • Steel detailer: Tensor Engineering, Indian Harbour Beach, Fla. *AISC MEMBER*

  • Owners:

    • Maine Department of Transportation, Augusta, Maine

    • New Hampshire Department of Transportation, Concord, N.H.

  • Engineer: Hardesty & Hanover, LLC, New York 

Prize Bridge Information

  • Year Awarded: 2020
  • Year Completed: 2018
  • Location: between Kittery, Maine and Portsmouth, N.H., ME
  • Award Class: Movable Span

Structure Information

  • Structure Type: Movable
  • Coating System: Metalized
  • Span Length (ft): 300
  • Structure Length (ft): 2800
  • Average Deck Width (ft): 42'7"
  • Steel Weight/Deck Area (lb/ft²): 193 (lift span)
  • Amount of Steel (tons): 1235 (lift span)