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

Structural
Landscape Architecture
Transportation
Stormwater
Water & Wastewater
Funding Procurement
Surveying

Services Designed with You in Mind

  • Civil Engineering

    Civil Engineering

    Creative solutions for structural, transportation, geotechnical & construction management Learn More about Civil Engineering
  • Structural

    Structural

    Fast, accurate, cost-effective solutions for everything from bridges to buildings Learn More about Structural
  • Geotechnical

    Geotechnical

    You'll find the leading experts in the geotechnical engineering field right here Learn More about Geotechnical
  • Transportation

    Transportation

    Creating safe and efficient transportation designs for roads and bridges since 1965 Learn More about Transportation
  • Recreation

    Recreation

    From meandering bike & pedestrian paths to skate parks & wave riders, talk to our experts Learn More about Recreation
  • Surveying

    Surveying

    Licensed surveyors using the latest technology for commercial and residential survey projects Learn More about Surveying
  • Industrial

    Industrial

    We have been providing quality services to industrial clients since 1965 Learn More about Industrial
  • Construction Administration

    Construction Administration

    We ensure a smooth process from pre-bid conferences to inspection and quality control Learn More about Construction Administration
  • Water System Engineering

    Water System Engineering

    Wastewater collection and treatment solutions that are human & environment-friendly Learn More about Water System Engineering
  • Wastewater Systems

    Wastewater Systems

    We design water distribution, storage and treatment solutions for communities and individuals Learn More about Wastewater Systems


TD&H Engineering Recent Blog Posts

  • Environmental & Industrial Hygiene Technician (Great Falls, MT)

    The Great Falls, MT regional office of TD&H has an immediate opening for an entry-level field technician in the Environmental and Industrial Hygiene Department.  Environmental technician responsibilities include accurate collection of field data and thorough field notes, soil and water sampling, air monitoring, construction and maintenance of remediation systems, oversight of excavation and other remedial activities, troubleshooting field instruments, and instrument repair, maintenance, and calibration.  Industrial hygiene technician responsibilities include occupational exposure and area air monitoring for a wide variety of substances, mold investigations, noise monitoring, asbestos and lead-in-paint inspections, abatement oversight and monitoring, documentation of field activities, and basic data analysis.  More >


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  • Wade DeBoo Named President and CEO of TD&H Engineering

    TD&H Engineering is pleased to announce Wade DeBoo, P.E. and Principal, as the new President and CEO of the company.
    DeBoo, a member of the TD&H team since 2000, will oversee operations from the company’s main office in Great Falls, Montana. He replaces retiring President and CEO David Crawford.
    “I am excited at the opportunity to step into the position of President and CEO of TD&H Engineering. This employee-owned company has a long history of success as a result of many hard-working former and current employees,” said DeBoo.
    DeBoo brings 24 years of engineering and management experience to the firm. He has a Master’s Degree in Civil Engineering with an emphasis on hydraulics, More >


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  • Bozeman Creek Enhancement Project at Bogert Park

    The Bozeman Creek Enhancement Committee and the design team led by Confluence Consulting, TD&H Engineering, Intrinsik Architecture, Nishkian Monks, Vaughn Environmental, and Design 5 gathered for a ribbon cutting ceremony on June 22nd to celebrate the completion of the Bozeman Creek Enhancement project. This project was established to improve Bozeman Creek through Bogert Park. Conceived in 2010, the project is the result of six years of planning, community involvement, fundraising, design and permitting. A top priority of the Bozeman Creek Enhancement Plan adopted by the City Commission in 2012, the Bogert project was the second project to be constructed using funding provided by the City’s Trails, More >


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