Trihydro is an engineering and environmental consulting firm committed to providing effective solutions. We approach each project as an opportunity to partner with our clients and build trust based upon successful outcomes. With project experience extending back to 1984, our professional engineers, geologists, scientists, designers, and regulatory experts understand how to take a strategic vision, turn it into a practical plan or design, and move it through project delivery. 

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Solutions you can count on

We offer comprehensive environmental services, engineering expertise, and technology solutions.
We focus on how each provided service factors into the bigger picture, so our solutions fully integrate into our clients' overall visions.

Our services

People you can trust

Trihydro has 500 people dedicated to service excellence. Our mid-size means
we have the expertise and manpower to provide project solutions, while still being small
enough to prioritize our individual clients' needs.

Our team

A cultural code

Trihydro's corporate code of conduct is based on a book titled Cowboy Ethics, What Wall Street Can Learn from the Code of the West by James P. Owen. The Code of the West has 10 tenets, and in 2017, Trihydro added one more: "Leave it better than you found it." Our cultural code underpins how we approach projects, relationships, and challenges.

code of the west

moving INDUSTRIES forward

The environmental and engineering services we provide benefit multiple industries. While the types of services we offer may be similar, each industry's challenges are unique. Trihydro is committed to understanding each specific client to develop specific, fit-for-purpose solutions. 


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Featured Projects

Piloting Connected Vehicle Technology

Wyoming Department of Transportation


In 2015, the U.S. Department of Transportation (USDOT) selected Wyoming as one of three sites in the country to design, build, and test phases for a regional Connected Vehicle (CV) Pilot Deployment Program. The CV Pilot Program, sponsored by the USDOT Intelligent Transportation Systems Joint Program Office, aimed to use cutting-edge technologies and applications to improve safety and reduce environmental impacts of personal driving.

The Trihydro team was selected as the technical and application lead, initially tasked with expanding the scope of mobile data collection from equipped vehicles (i.e., WYDOT snowplows and other equipped fleets that operate in the highway corridor) and developing new applications that provide in-vehicle advisories on adverse weather conditions, speed limits, and even parking availability. The program’s overall goal was to reduce traffic incidents in the corridor, enhance safety, and improve WYDOT’s emergency response and recovery times.

The project included:

  • Deploying and testing Lear and Sirius XM Onboard Units (OBU)s on fleet vehicles, including a combination of snowplows, maintenance fleet vehicles, emergency vehicles, and private trucks. These vehicles then broadcast a basic safety message and remotely send vehicle and road condition data to WYDOT Transportation Management Centers (TMCs).
  • Overseeing the development of several applications to support wide-area travel advisories, variable speed limit postings, forecast road condition information, detours, and parking notifications.
  • Developing and demonstrating vehicle-to-infrastructure (V2I) and vehicle-to-vehicle (V2V) applications for weather responsive variable speed limits, work zone advisories, and incident alerts.
  • Conducting formal user acceptance testing (UAT) and installing CV infrastructure.
  • Setting up a WYDOT CV test environment and gates for safe production deployment of tested code.
  • Capturing, managing, and evaluating vehicle data.
  • Participant training and stakeholder education.

During the test period of November 2017 – May 2019, 75 roadside units and 400 vehicles received and reported messages using the Dedicated Short-Range Communication (DSRC) radios. The transportation data was also available to the public through the Wyoming 511 app, compatible with Android and iOS devices, and the WYDOT commercial vehicle operator portal. The CVP concluded in 2021, with WYDOT leveraging the foundation created by the pilot to expand CV infrastructure in Wyoming.  

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