Lewiston, Idaho

The Team
  • TD&H started the Lewiston office in 1994. Over the last 21 years, we have grown from four people to a full-time professional staff of 16, including three registered professional engineers, a certified grant administrator, professional geologist, registered land surveyor and dedicated support staff.

    Historically, the Lewiston office has been very strong in transportation work, designing miles of roadways, highways and bridges for the Idaho Transportation Department and cities and counties within both Washington and Montana. Surveying has also been part of the backbone of our operation, and our full-time survey crew are experts in all types of boundary, topographic and construction surveying.

    In July of 2012, TD&H merged with Progressive Engineering Group. We are excited to now offer expertise in water and wastewater system design. In addition, we are now the only regional engineering firm that offers both top-notch design services and certified grant administration.

    Our local construction division provides in-house expertise in heavy construction as well as materials and compaction testing.

    • Transportation Design
    • Water and Wastewater Engineering
    • Grant Writing and Administration
    • Civil Engineering
    • Structural Engineering
    • Environmental Engineering
    • Geotechnical Engineering
    • Surveying
    • Construction Management and Inspection
    • Public Involvement
    • Graphic Design, Website Development, Photography/Video Production
  • TD&H Engineering
    Lewiston Regional Office

    210 Main St
    Lewiston, Idaho 83501
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    Monday – Friday 8:00am – 5:00pm

    Phone (208) 746-0938
    Fax (208) 746-9732

    Email Us

  • Michelle Bly, P.C.E.D. & Principal
    Regional Manager / Principal

    Michelle has over 20 years of experience in community and economic development, specializing in project development and financial assistance through grant/loan writing, administration, and environmental compliance. She is a Professional Community and Economic Developer (PCED) and a Certified Grant Administrator. Michelle has a B.A. in Business from Lewis-Clark State College and a Masters of Science in Community and Economic Development from University of Central Arkansas. Michelle spends most of her time on the road meeting with clients, overseeing construction compliance, and working with funding agencies to find communities funds for their projects.

    Gwen Ellis, P.E.
    Engineer - Civil / Inspector

    Gwen has a Bachelor of Science in Civil Engineering and Master of Science in Mechanical Engineering. Gwen’s background in both civil and mechanical applications makes her uniquely-suited to assess, troubleshoot, plan, design and inspect mechanical systems that is extremely beneficial to water and wastewater projects. Gwen provides technical writing for Preliminary Engineering Reports and Water System Plans and engineering design and support for a wide variety of projects including sidewalks, roadways, water reservoirs and water distribution systems. Prior to joining TD&H Gwen worked for a consulting firm where she assisted in various wastewater projects, including membrane filtration, odor control upgrades, and plant start-up. Gwen also assisted with bridge inspections for the Montana Department of Transportation.

    Jennifer Blood, E.I.T.
    Engineer - Civil / Inspector

    Jen has a Bachelor of Science in Civil Engineering and provides technical writing for Preliminary Engineering Reports and engineering design and support for a wide variety of projects including sidewalks, roadways, water reservoirs, and water distribution systems .Jen’s strength is construction management and is detailed oriented. Jen owned her own construction company prior to getting her engineering degree, which brings a unique “constructability” perspective to projects.

    Krista Brown, P.E.
    Engineer - Structural

    Kris has worked on hundreds of industrial, commercial, military, and residential new construction and renovation projects.  Kris has over 30 years of experience in structural design, analysis, and construction.  Prior to joining TD&H, Kris focused on precast and prestressed concrete structures including pedestrian and vehicle bridges, industrial, commercial, agricultural, water storage and treatment, and detention facilities.  She has experience in project management and design/build projects.  She is familiar with current codes such as ACI 318, ASCE 7-10, IBC 2012, and AASHTO Bridge Design Specifications.

    Kris received her B.S. in Civil Engineering from Iowa State University, M.S. in Soils Engineering from Iowa State University and PhD in Civil Engineering from University of Idaho.

    Alfred Sanchez III, E.I.
    Engineer - Structural

    Alfred has experience in the structural design, analysis, project management and construction of structures using steel, concrete, masonry, cold formed steel and timber. Alfred has worked on military, educational, commercial, residential and industrial jobs primarily in building structures. Two key qualities he brings to each project is the attention to the constructability of a design and effective communication between varied stakeholders. Alfred received his BBA in financial management from the University of New Mexico and MS in Civil Engineering from the University of New Mexico.

    Jenni Light, M.S., PhD
    Engineer - Environmental

    Jenni has over 20 years of environmental experience working with municipalities, government agencies and industry. Jenni has experience in environmental permitting, (air, water, solid and hazardous waste), SPCC plans, stormwater and erosion control plans, environmental assessments and audits including SEPA as well as GIS mapping in addition to teaching engineering at our local college.

    Mary Iacobelli
    Administrative Assistant

    Mary comes to TD&H Engineering with nearly 20 years of experience in writing and office management. In the past, she has been a newspaper reporter, public relations writer, transcriptionist and office manager. She earned a degree in Journalism from Oakland University.