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

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

  • Civil Engineering Position

    The Great Falls, Montana regional office of TD&H Engineering has an immediate opportunity for a …

    Jul 13, 2015
    Read More

  • Hydrocracker installed at Calumet Montana Refinery in Great Falls

    By: DaVonte McKenithCONNECT GREAT FALLS — Installation of a “mild hydrocracker” was completed at the …

    Mar 24, 2015
    Read More

  • TD&H Engineering Commits $25,000 to Great Falls College MSU Endowment

    TD&H Engineering invests in engineering scholarship opportunities at Great Falls College MSU, by endowing $25,000 …

    Feb 26, 2015
    Read More

  • View All

Active Projects

  • City of Livingston

    The City of Livingston is getting ready to start construction. View construction updates, road closure information, and more information here.

    Learn More