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

Services Designed with You in Mind.

  • TD&H Engineering Survey Services


    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 collection and treatment solutions that are human & environment-friendly

  • TD&H Engineering Structural Development Engineering Services


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

  • TD&H Engineering Geotechnical Services


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

  • TD&H Engineering Transportation Services


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

  • TD&H Engineering Survey Services


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

  • TD&H Engineering Industrial Engineering Services


    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
TD&H Engineering Project Websites

  • Structural Engineer

    Great Falls engineering firm has an opening for a structural engineer in the Great Falls, …

    Dec 3, 2014
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  • New Machine in the Great Falls Construction Materials Testing Lab!

    The Great Falls laboratory recently acquired a Humboldt Digital MasterLoader load frame to replace a number of older …

    Nov 4, 2014
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  • How Are We Going to Pay for This?

    You might be wondering how some of the more expensive projects in our portfolio get …

    Jun 23, 2014
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