
Hillis-Carnes Capitol Services, PLLC
Geotechnical, environmental, and materials engineering from the roof to the ground
Washington, DC
Explore capabilities, project experience, and office locations to build your shortlist.

Geotechnical, environmental, and materials engineering from the roof to the ground
Washington, DC

Engineering & Bioengineering

We build quality into every project.

We know the science behind your concrete.
Mendota Heights, MN

Our Most Powerful Solution is Trust
Columbus, OH+1

Innovative and cost-effective structural engineering and testing services
Oracle, AZ

Geotechnical Engineering and Soil Testing
Tallahassee, FL

Engineered better together, from concept to completion.
Washington, DC

Civil - Planning - Surveying
Idaho Falls, ID+1

Taking the Lead on Quality and Safety, Since 1925
Whitestone, NY

Unwavering Quality. Reliable Results.
Pierre, SD+3

Providing concise and cost-effective engineering solutions
Morrisdale, PA+2
Strategic Engineering Solutions that Exceed Expectations

Engineering with Integrity, Honesty & Highest Standard of Care
Fort Thompson, SD

Geotechnical Engineering and Foundation Design Recommendations.
Phoenix, AZ+1

Engineering services from concept to production, including design, simulation, and manufacturing
Charlotte, NC

Quality, professionalism, and unparalleled service with a commonsense approach to engineering.
Denver, CO

Comprehensive geotechnical engineering solutions for public and private sector development in the DC, Maryland, and Virginia area
Chantilly, VA
Testing, digital systems, and engineering for mobility.
Northville, MI

Geotechnical Engineering and Geotechnical Site Investigation.
Houston, TX

We Set Our Sights on Excellence
Bridgeton, NJ

Project Management and DMCG Provides Full Professional Services On Project Planning.
Arecibo, PR

Design of Weldments, Fatigue Design, and Finite Element Analysis
Bellevue, WA

The Industry Solution to Safety and Maintenance Challenges
Rexburg, ID