These are a few of the projects for which Calderwood Engineering has provided services in the form of final structural design, and/or construction engineering. You can contact us by telephone or email. We look forward to servicing all your engineering needs.


Wash Bridge over West Branch Nezinscot River, Sumner, Maine

  • Constructed in 2017 by Tbuck Construction

  • Precast 18'-0" Span x 6'-0" Rise, 3-sided Box

  • CIP Footing

  • Precast Concrete Block Wingwalls

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Keystone Bridge, Bristol, Maine

  • Constructed in 2019 by Hagar Enterprises

  • Corrugated Steel Arch 26'-0" Span x 8'-1" Rise

  • Concrete Headwall with Stone Veneer


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Tannery Brook Bridge, Mariaville, Maine

  • Constructed in 2017 by NF Luce Inc.

  • Precast / Pre-stressed solid slabs 36'-0" Span

  • Precast Spread footing on CIP fill Concrete

  • Precast Concrete Wingwalls

  • Road Colsure limited to 14 Days


Jimmy Stream Bridge, Litchfield, Maine

  • Constructed in 2016 by NF Luce Inc.

  • 21'-6" Span composite steel bridge

  • CIP Concrete Deck with integral wearing surface

  • Spread Footing Abutments

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Chaney Bridge over Smelts Brook, Bremen, Maine

  • Constructed in 2018 by Hagar Enterprises, Inc.

  • 50'-0" Span Precast/Prestressed Voided Slabs

  • Abutments CIP concrete spread fottings cast on bedrock

  • Precast T-wall for Retaining Walls

  • Timber/Earthen stairs to allow for water access

  • Onsite parking included

  • Steel Backed Timber Rails

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Winslows Mills Bridge over Medomak River, Waldoboro, Maine

  • Constructed in 2018 by Wyman & Simpson

  • 83'-0" Span composite welded plate girders

  • Constructed on existing spread footing abutments

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