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

  • Civil Engineer (Lewiston, ID)

    The Lewiston office of TD&H Engineering has an immediate job opening for a licensed Professional Engineer with at least five years of engineering experience to take a lead role in managing a variety of civil engineering projects.
    Job responsibilities include leading design, coordination with clients, developing and managing projects and project schedules and budgets, and determining equipment and staff resource requirements.
    A general engineering background is acceptable, but proven performance in a specific service industry is desirable. Service industries may include transportation, water, or wastewater. Applicants must possess a good team attitude, strong communication and writing skills, and  positive client interaction. 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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  • 2017 Innovator Award – Best On-Campus Design

    We’re excited to announce that Montana State University’s Yellowstone Hall won the 2017 Innovator Award in Best On-Campus Design from Student Housing Business!
    We were happy to be involved and provide innovative engineering solutions for this project in the following service areas: geotechnical, civil, surveying, construction staking, construction inspection/materials testing, and landscape architecture.
    It was a pleasure to be part of the team with SMA Architects, NAC Architecture, Langlas & Associates, DCI + BCE Engineers and Associated Construction Engineering. More >


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