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

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

  • Mike Johnson – Farewell to a Dear Friend & Co-Worker

    It’s with very heavy hearts and much sadness that we say farewell to a dear friend and co-worker. Mike Johnson, our Corporate CADD Manager, passed away Saturday, May 20, 2017.
    He will be missed by all of us at TD&H and the entire community of Great Falls. The impact he had on many lives has left a lasting impression.
    Mike’s obituary can be read here. Condolences to the family may be posted online at www.SchniderFuneralHome.com
      More >


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  • Entry-Level Civil Engineer (Structural)

    TD&H Engineering has an immediate opening in the Spokane, WA office for an entry-level civil engineer with an emphasis on structural and a strong knowledge of CADD.
    Applicants must possess either a Bachelor of Science degree or higher from an accredited university. Certification as an Engineering Intern (E.I.) is desirable. The ideal candidate would be capable in design and drafting using AutoCAD.  Exceptional communication skills, along with a strong team attitude and a positive client focus are essential.  Work will include an emphasis in structural engineering design and drafting for a wide variety of projects.
    TD&H offers a competitive compensation and benefits package, More >


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  • Entry-Level Civil Engineer

    TD&H Engineering has an immediate opening in the Lewiston, Idaho office for an entry-level civil engineer.
    Applicants must possess either a Bachelor of Science degree or higher from an accredited university. Certification as an Engineering Intern (E.I.) is desirable. The ideal candidate would be capable in design and drafting using AutoCAD and/or MicroStation. Exceptional communication skills, along with a strong team attitude and a positive client focus are essential.
    TD&H has a total of more than 100 employees that serve municipal, industrial, commercial, and government agencies. We are a full-service engineering consulting firm assisting our clients from project planning through design and construction. More >


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