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ALLWEST Testing & Engineering, Inc.

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United States
Hayden, ID
ALLWEST Testing & Engineering, Inc.

ALLWEST is a premier full-service professional engineering, environmental, and construction materials testing firm serving the Inland Northwest.

ALLWEST is a professional geotechnical engineering, environmental consulting, & construction materials testing, and special inspection firm serving clients in Washington, Oregon, Idaho, and Montana. With a common sense approach, we assist design professionals and owners from project planning through final construction. With over 20 years of experience in the Inland Northwest, our team of professional engineers, environmental professionals, geologists, engineering technicians, and special inspectors are committed to providing high quality service and a timely response to our clients. Providing the expertise and experience to keep projects on track is just part of the commitment that ALLWEST has to our clients. We are dedicated to servicing our clientele with integrity, professionalism and reliability.

11/02/2026

The Park at Expo Idaho: A True Team Effort

The Park at Expo Idaho in Boise, Idaho was a little different from our typical projects, and that’s part of what made it such a great one for ALLWEST. More importantly, it was a project that truly showcased the strength of our team.

From February 10, 2025, through October 14, 2026, ALLWEST served as the primary materials testing and special inspection support for the project.

Over that time, our Meridian team worked together across the field, lab, and office to keep the project moving and provide consistent, responsive service to our client.

Our team supported the project with:
- Soil and asphalt density testing
- Concrete quality control testing
- Special inspection of reinforced concrete, masonry, and shotcrete
- Concrete crack monitoring
- Shop and visual welding inspection
- Post-installed adhesive anchor observations
- Percolation testing
- Laboratory testing of soils, concrete, shotcrete, masonry, and asphalt

From technicians and inspectors in the field to our laboratory and support teams behind the scenes, this project was a collective effort from start to finish.

Successful projects are built on collaboration. We're proud of the teamwork our Meridian team brought to The Park at Expo Idaho, and we're grateful for the opportunity to work alongside the many companies and project partners who contributed their expertise along the way.

A special thank you to Ada County, Idaho for its leadership throughout the project and for bringing so many teams together toward a shared goal.

10/23/2026

Great infrastructure starts with dedicated people. From planning to paving, our teams are committed to delivering safe, reliable roads that connect communities and drive progress.

10/14/2026

We had a fantastic time at the University of Idaho Fall Career Fair, the University of Washington Engineering Hiring Expo in Seattle and Gonzaga University Fall Career Fair last week!

Thank you to all the students and alumni who stopped by to learn more about ALLWEST, ask questions, and explore career opportunities with our team. We enjoyed meeting so many talented future professionals and sharing what makes ALLWEST a great place to build a rewarding career.

We look forward to connecting with even more students at the Boise State College of Engineering Career Fair on October 22 and the University of Washington Civil & Environmental Engineering Career Fair on October 27.

Stop by our table, grab some ALLWEST swag, and discover how a career with ALLWEST can help you achieve your professional goals.

We can't wait to meet you!

10/01/2026

Field work in progress!

Ethan Thompson, Staff Engineer, and Cooper Faker, Intern, are on site at the Junction at Kathleen development in Coeur d'Alene, conducting geotechnical exploration for the future connection of Junction Way and Building Center Drive. Geotechnical drilling helps engineers understand soil and groundwater conditions before construction begins, ensuring a safe and reliable foundation for future development.

Photo Credit: Brice Robinson, EIT - Staff Engineer, Spokane

09/29/2026

10 Years at ALLWEST! 🎉

James Thomasson, P.E. | CEO / President

James began his journey with ALLWEST in the Engineering Department at our Hayden office, and from day one, he stood out. Not just because of his British accent, but because of his positivity, humility, and willingness to jump in and help wherever he could.

It was clear from the beginning that James wasn't simply here to be an engineer. He was here to be part of a team. He believed in helping others, supporting the company, and contributing to ALLWEST's growth in any way possible. Whether it was tackling an engineering challenge, addressing an operational need, or simply lending a hand, James always approached it with enthusiasm and a team-first mindset.

Those same qualities that made him a valued teammate a decade ago are the same qualities that ultimately led him to the role of CEO. His commitment to our people, clients, and culture continues to help guide ALLWEST forward today.

Thank you for your leadership, dedication, and the positive impact you have had on ALLWEST over the past 10 years, James. We are fortunate to have you leading our team and helping shape the future of ALLWEST.

Cheers to 10 years, James!

09/24/2026

Ever wonder what it takes to make a chip seal roadway last?

It starts long before the first rock hits the pavement.

Our Construction Materials Testing (CMT) team plays a key role in making sure the materials, equipment, and application methods are all working together to create a durable roadway. That includes:

🔹 Evaluating aggregate size and shape to help the stone lock together properly
🔹 Testing compatibility between the aggregate and asphalt emulsion
🔹 Recording application rates of the equipment and timing the placement sequence from oil application to aggregate placement, and from aggregate placement to rolling
🔹Counting and timing roller passes to help ensure minimum rolling requirements are met within the specified time window
🔹 Performing testing in accordance with recognized AASHTO and ASTM standards to support quality and long-term performance

This summer, our Hayden team provided on-site testing and quality control for chip seal work along Spokane Street, Idaho Street, Greensferry Road, and Seltice Way in Post Falls, Idaho. The project used a ½-inch chip aggregate, which is larger than the ⅜-inch chip traditionally used in the area. Throughout construction, our technicians monitored application rates, embedment, and material performance to help ensure the new design delivers the durability and performance the community expects.

From the lab to the job site, our team helps make sure every detail is right so our roads can serve the community for years to come.

Photo Credit: Shane Warner, Senior Engineering Technician/Project Manager, Hayden

09/21/2026

We're excited to welcome Ryan DeMars, P.E. to our Missoula Engineering team.

Ryan brings more than nine years of experience in geotechnical engineering, leading teams of field technicians and managing projects across a variety of challenging environments. His background includes notable ski resort development and construction projects in complex mountain geology throughout the region.

Ryan earned his Bachelor's degree in Civil Engineering from Montana State University-Bozeman and is a licensed Professional Engineer in both Montana and Wyoming. He began his geotechnical career as a soils field technician in Denver, where he quickly distinguished himself through his technical skills and leadership potential. This led to an opportunity to help launch a new branch in Bozeman, Montana, playing a key role in getting the business off the ground and supporting its early success.

Today, Ryan brings that same expertise, leadership, and passion for geotechnical engineering to ALLWEST, and we're excited to see the impact he'll have on our clients, projects, and team.

When he's not working, you'll likely find Ryan skiing, mountain biking, or enjoying live music.

Please join us in welcoming Ryan to ALLWEST and our Missoula team!

09/15/2026

This week, we join the construction industry in recognizing Construction Su***de Prevention Week and it's 2026 theme: Building on Progress.

Building on Progress means honoring what’s working while continuing to push forward. It’s about breaking down barriers, fortifying pathways to help, and building a culture, where asking for support is seen as a sign of strength — not weakness.

Progress is happening but there is still important work to do. At ALLWEST, we believe that looking out for one another is just as important as the work we do every day.

The 2026 Pledge is simple but impactful:

"I will pledge to learn at least one new way to seek help for someone in need."

Whether that's checking in on a coworker, learning about available resources or starting a conversation, small actions can make a meaningful difference.

If you or someone you know is struggling, help is available through the 988 Su***de & Crisis Lifeline by calling, testing or chatting 988.

We build structures together, and we build people up the same way.

This Construction Su***de Prevention Week, let's continue building a culture of support, connection, and care. 💙

***dePreventionWeek

09/07/2026

This labor day, we celebrate the hardworking professionals who help build strong foundations for our communities.

Thank you to the ALLWEST team and to all those across the construction industry whose work helps shape the places we live, work, and grow.

Happy Labor Day!

Our offices are closed today, September 7th.

Address

690 West Capstone Court
Hayden, ID
83835

Opening Hours

Monday	8am - 5pm
Tuesday	8am - 5pm
Wednesday	8am - 5pm
Thursday	8am - 5pm
Friday	8am - 5pm

Website

http://www.allwesttesting.com/

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