Barr is an engineering and environmental consulting firm, bringing services to clients across North America and around the world for over a century.

Providing exceptional service is Barr’s fundamental focus, and solving clients’ complex problems is what makes us tick. In a world of experts, our engineering and environmental team brings …

Barr provides engineering and environmental consulting services to clients across the Midwest, throughout the Americas, and around the world. We have offices in Minnesota, Colorado, …

Barr helps clients with projects involving water treatment, storage, and distribution, and addresses environmental challenges involving watersheds, wetlands, lakes, and streams.

To provide environmental consulting & engineering services to clients at a distance from our fully staffed offices, Barr maintains project offices close to key project sites.

From our many office locations across North America, Barr is able to handle all of your engineering & environmental consulting needs.

At Barr, you’ll join a community of engineers, scientists, and professionals who will help you achieve your ambitions and build a meaningful, rewarding career.

Discover how Barr works shoulder-to-shoulder with you to reframe challenges, reveal hidden opportunities, and deliver lasting outcomes for a sustainable future.

Discover how Barr works shoulder-to-shoulder with you to reframe challenges, reveal hidden opportunities, and deliver lasting outcomes for a sustainable future.

Nov 10, 2025 · Barr has relocated our Ann Arbor, Michigan, office to accommodate our growing team and support our long-term commitment to serving clients in Michigan and beyond.