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  • Markets & Sectors
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    • Forestry
  • Services
    • Civil Engineering
    • Surveying
    • Geo-forestry
    • Geospatial Services
    • Permitting
    • Forestry
    • Energy
    • Funding Support
    • Structural Engineering
  • Projects
    • Better Roads
    • Mobile Verify
    • Site Minder
    • Pavement Management–Retail
    • Turbine Component Transport Planning
    • Passadumkeag Wind Project
    • Kibby Wind
    • Oakfield Wind Project
    • Pavement Management–Commercial
    • Site Redevelopment – St. Joe’s
    • Husson Townhouses
    • West Broadway/Route 2 Widening
    • Pit Trail
    • American Forest Foundation
    • Biddeford Parking Garage
    • Passamaquoddy Sewer Renovations
    • Houlton Pedestrian Bridge
    • Solar Site Design & Permitting
  • About Sewall
    • Our Team
    • Community Involvement
    • Contact
Workers and manager in safety helmets working with documents at factory table

Structural Engineering

Safety is our priority.

Sewall specializes in bridge load ratings and associated inspection services as well as highway ancillary structure inspections. Our visual assessments assist decision-makers in determining structural integrity, functionality, and durability.  

Related

Top view of two construction workers wearing hardhats and reflective jackets holding tablet and checklist on gray concrete background. Group of engineers sharing ideas about the project.
Civil Engineering
A Highway intersection with cars and traffic lights. Top view from drone
Transportation & Traffic Engineering
headshot photo of heather hayes
Heather Hayes
Engineers at work
Surveying
Portrait of construction engineers working on building site together
Infrastructure
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

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 […]

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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 […]

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77 Exchange Street, Suite 401
Bangor, ME 04401
(207) 827-4456
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