Deer Isle-Sedgwick Suspension Bridge

Maine DOT

Project Summary

Since 2003, TranSystems has completed numerous projects for Maine DOT on the Deer Isle-Sedgwick Bridge. TranSystems has performed an in-depth inspection of the entire bridge, including cable band removal and cable to permit interior inspection of the main cables. Based on recommendations, TranSystems then prepared rehabilitation design contract documents (plans, specifications and construction cost estimate) for deck replacement using a concrete filled steel grid, structural steel and concrete repairs and traffic safety improvements.

TranSystems has also completed the design, special provisions and construction cost estimate for two additional contracts: bridge painting and structural steel repair contract; and main tower concrete pier rehabilitation. This project included painting of all structural steel, as well as the main cables, suspender ropes and diagonal stay cables.

The pier rehabilitation project was performed during the 2010 construction season, which included the removal of the existing steel/iron cladding and deteriorated concrete on the pier columns and pier bases, and placement of new concrete and reinforcing steel using new steel cladding formwork.

These three bridge rehabilitation design contracts have a combined construction cost of $25M.

Project Highlights

  • Bridge is eligible for the National Register of Historic Places.
  • Provided inspection, design, and construction phase services

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