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Civil Engineer Jobs, Double exposure of Project Management Team and Construction Site with tower crane background, Engineer Designer Consultant and Architecture Team concept.

Program & Construction Management All Markets and Sectors

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Wind Quals Matrix All Projects

Our Solutions

Sewall is a full-service consulting firm based in Bangor, Maine. The 142-year-old company offers a wide range of professional services, including civil and transportation engineering, surveying, construction management/administration and inspection, alternative site evaluation and permitting, land use planning, geospatial solutions (aerial & satellite imaging, mapping, application development, and asset management), and natural resources consulting.

Driven by a culture of collaboration and entrepreneurial spirit, Sewall’s engineers, surveyors, and geospatial experts partner with clients to improve communities, infrastructure, and the environment.

We leverage the best talent in the industry to move your project forward.

Sewall is proud of the role it played in the establishment of the Katahdin Woods & Waters National Monument.

Katahdin Woods & Waters National Monument

Got Robots? TFIC Does!

Visit Megawatt Sponsor Booth #26 at the Maine Transportation Conference on Dec. 1, 2022, Augusta Civic Center, to see a non-destructive testing robot in action. TFIC companies and affiliates Sewall, Frazier Signal Technologies, and Infraspect will also be featured at the booth. Infraspect provides non-destructive testing of bridges, cables, tendons, wire ropes, high mast light […]

Treadwell Franklin Infrastructure Acquires Interest in Biofine Developments Northeast Inc.

Maine-based Treadwell Franklin Infrastructure Capital LLC (“TFIC”) and Biofine Developments Northeast Inc. (“BDNE”), announced today that TFIC has acquired a minority interest in the shares of BDNE, adding to TFIC’s portfolio of infrastructure and renewable energy assets, and bringing development and corporate services in-house to BDNE. BDNE, a Maine company, owns exclusive rights to the […]