We're a consulting engineering firm offering a full range of services throughout Montana, Washington, Idaho, North Dakota & Pennsylvania.

TD&H 50 year Anniversary Party
Celebrating 50 Years
Structural
Transportation
Stormwater
Water & Wastewater
Funding Procurement
Surveying
Landscape Architecture

Services Designed with You in Mind

  • TD&H Engineering Survey Services

    Surveying

    Licensed surveyors using the latest technology for commercial and residential survey projects

    Learn More about Surveying Services
  • TD&H Engineering Civil Engineering Services

    Civil Engineering

    Creative solutions for structural, transportation, geotechnical & construction management

  • TD&H Engineering Land Development Services

    Land Development

    Site development planning requires an interdisciplinary team approach. We can help!

  • TD&H Engineering Water System Services

    Water Systems

    We design water distribution, storage and treatment solutions for communities and individuals

  • TD&H Engineering Wastewater Services

    Wastewater

    Wastewater collection and treatment solutions that are human & environment-friendly

  • TD&H Engineering Structural Development Engineering Services

    Structural

    Fast, accurate, cost-effective solutions for everything from bridges to buildings

  • TD&H Engineering Geotechnical Services

    Geotechnical

    You’ll find the leading experts in the geotechnical engineering field right here

  • TD&H Engineering Transportation Services

    Transportation

    Creating safe and efficient transportation designs for roads and bridges since 1965

  • TD&H Engineering Survey Services

    Recreation

    From meandering bike & pedestrian paths to skate parks & wave riders, talk to our experts

  • TD&H Engineering Industrial Engineering Services

    Industrial

    We have been providing quality services to industrial clients since 1965

  • TD&H Engineering Survey Services

    Construction Management

    We ensure a smooth process from pre-bid conferences to inspection and quality control



TD&H Engineering Recent Blog Posts

  • Senior Transportation Engineer

    TD&H Engineering has an immediate opportunity for a Senior Transportation Engineer. The successful applicant must be willing to take a leadership role within our transportation discipline, and can be expected to work with various TD&H staff on highway and road …


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  • Great Falls Students Explore Engineering at STEAM Expo

      TD&H is a commercial sponsor for the STEAM Expo in Great Falls.  Our Great Falls office sets up a booth with activities for the kids that attend the Expo. This year we had opportunities for the kids to build …


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  • Pedestrian Trail Underway near Sun River

    View the Latest News Update 4/1/16 You may have seen a big crane set up recently on the Sun River off 10th Ave. S. near the Warden Bridge. It’s just one piece of a one million dollar plus construction project …


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