Public engineering firm directory

Find engineering consulting firms by capability and location.

Search engineering firm profiles built for buyers who need a shortlist, not a sales pitch.

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Bowman Consulting Group Ltd.

Bowman combines expertise, innovation and collaboration to deliver landmark projects that stand the test of time.

Website4 projects1 leadersUpdated Jun 2026

Project: Tri-State Tollway (I-294) Reconstruction, Mile Long Bridge

Service: Transportation EngineeringService: Transportation PlanningService: Transportation DesignIndustry: TransportationIndustry: AviationType: Civil Engineering+48 more

Clapsaddle-Garber Associates, Inc.

Marshalltown, IA

Engineers, Surveyors, and Architects

WebsitePhone6 offices6 projects35 leaders6 credentialsFounded 1959

Project: Grand Crossing PICP Parking Lot

Service: Civil EngineeringService: Site DesignService: Streets and TransportationIndustry: AviationIndustry: GovernmentType: Architecture & Engineering+34 more

D'Leon Consulting Engineers Corporation

Long Beach, CA

DLCE Is Driving Change for Our Communities

Website3 offices12 projects6 leadersFounded 1987Updated Jun 2026

Project: SMForward at Sacramento International Airport

Service: Civil EngineeringService: Civil DesignService: Environmental PlanningIndustry: AviationIndustry: TransitType: Civil Engineering+12 more

DGR Engineering

Rock Rapids, IA

Building the foundation for every day

WebsitePhone6 offices7 leadersUpdated Jun 2026

Service detail: Aviation

Service: AviationService: Civil EngineeringService: Bidding DocumentsIndustry: AviationIndustry: AirportsType: Aviation Engineering+23 more

DOWL

Portland, OR

Small-Town Service, Big-Time Experts

Website5 offices8 projects12 leadersUpdated Jun 2026

Project: Choteau Wastewater Collection and Treatment Plant

Service: Environmental ServicesService: Environmental StudiesService: Environmental Planning and PermittingIndustry: AviationIndustry: AirportsType: Civil Engineering+35 more

EJES Inc

Dallas, TX

Providing Service with Excellence

WebsitePhone5 offices9 projects1 credentialsUpdated Jun 2026

Project: Marine Corps Air Station Iwakuni (MCASI)

Service: Civil EngineeringService: Roadway DesignService: Bridge DesignIndustry: GovernmentIndustry: FederalType: Architecture & Engineering+45 more

Endesco, Inc.

Rockville, MD

Endesco, Inc. is a multi-discipline civil engineering design, consulting, and construction management firm founded in 1997 and headquartered in Rockville, Maryland. It specializes in water resources, transportation planning and traffic engineering, roadway and lighting design, environmental studies, GIS, and project and construction management, primarily serving state DOTs, transit authorities, counties, cities, and federal agencies across the Washington, DC/Baltimore metro region and beyond.

WebsitePhone2 offices6 projects9 credentialsFounded 1997Size Estimate: 5-25 employees

Project: Transform I-66 Outside the Beltway (Express Lanes), Northern Virginia

Service: Water ResourcesService: Stormwater ManagementService: Hydraulics and HydrologyIndustry: GovernmentIndustry: TransportationType: Civil Engineering+52 more

Engineering Design Technologies, Inc.

Marietta, GA

Engineering Design Technologies (EDT) is a fully integrated engineering and design-build firm founded in 1993 and headquartered in Marietta, Georgia. EDT delivers multi-discipline engineering, architecture, construction, and program management across federal, municipal, commercial, healthcare, aviation, and transportation markets from seven offices spanning the Southeast, Mid-Atlantic, and US Virgin Islands. Its four divisions cover engineering, architecture (EDT-THA), construction (EDT Constructors), and development (EDT Development).

WebsitePhone7 offices6 projects1 credentialsFounded 1993Size Estimate: 50-200 employees

Project: CDC Emergency Operations Center

Service: Civil EngineeringService: Stormwater drainage assessment and modelingService: Transportation engineeringIndustry: DefenseIndustry: FederalType: Architecture & Engineering+47 more

HBC Engineering Company

Miami, FL

Engineering solutions that move communities forward.

WebsitePhone6 offices10 projects1 leadersFounded 2006Size Estimate: 80+ employees

Project: CDWWTP Oxygen Production Facility

Service: Aviation EngineeringService: Airfield Pavement DesignService: Pavement Testing and EvaluationIndustry: TransportationIndustry: BridgesType: Civil Engineering+106 more

Holt Consulting Company, LLC

Columbia, SC

The Consultant of Choice for Aviation and Surface Transportation Projects Across the Southeast

WebsitePhone7 offices7 projects2 leaders7 credentialsFounded 2013

Project: Emergency Bridge Package 2018-2A

Service: Aviation ServicesService: Aviation PlanningService: Airfield DesignIndustry: AviationIndustry: AirportsType: Civil Engineering+24 more

Infrastructure Consulting & Engineering, LLC

West Columbia, SC

A Full Service Transportation Consulting and Design Firm

WebsitePhone15 offices6 projects5 credentialsFounded 2005Size Estimate: 500-1,000 employees

Project: NC-540 (Triangle Expressway SE Extension)

Service: Roadway and Highway DesignService: Roadway widening and extensionService: Major interchange and intersection designIndustry: TransportationIndustry: GovernmentType: Civil Engineering+85 more

Integrated Design Engineers

Seattle, WA

Passionate - Innovative - Responsive

WebsitePhone1 office4 projects2 leaders4 credentialsUpdated Jun 2026

Project: Seattle Public Utilities North Transfer Station

Service: Building Structure EngineeringService: Building Information ModelingService: Connection DesignIndustry: CommercialIndustry: RetailType: Structural Engineering+20 more

International Consulting Engineers (ICE)

Corpus Christi, TX

Engineering an Innovative Future

WebsitePhone1 office1 projects1 leadersFounded 2010Size Estimate: 100-200 employees

Project: Moore Field Airport (Formerly Moore Air Base)

Service: Civil EngineeringService: Roadway and drainage designService: Site developmentIndustry: MarineIndustry: Ports & HarborsType: Architecture & Engineering+46 more

Interstate Engineering

Professionals You Need, People You Trust

Website3 projectsUpdated Jun 2026

Project: Dead Colt Creek Upper Watershed Improvements

Service: Engineering and DesignService: Infrastructure planningService: Existing-system upgradesIndustry: GovernmentIndustry: InfrastructureType: Civil Engineering+33 more

KSA Engineers Inc

Longview, TX

Dedicated to making life better in communities

WebsitePhone17 offices7 projects3 leaders5 credentialsFounded 1978

Project: Sabine River Water Treatment Facility

Service: Water and Wastewater EngineeringService: Water Treatment Plant DesignService: Wastewater Treatment Plant DesignIndustry: AviationIndustry: AirportsType: Architecture & Engineering+43 more

Kimley-Horn

Raleigh, NC

Expect More. Experience Better.

Website8 offices22 projects4 credentialsFounded 1967Size Estimate: 7,000-12,000 employeesUpdated Jun 2026

Project: RUS Bus Transit Facility

Service: Transportation EngineeringService: Highway & Roadway DesignService: Transportation PlanningIndustry: AerospaceIndustry: AviationType: Aviation Engineering+95 more

Leigh + O'Kane

Lee's Summit, MO

A structural engineering firm focused on solving complex challenges through collaboration, responsiveness, and dependable execution.

WebsitePhone1 office10 projects3 leadersFounded 1986Size Estimate: 5-50 employees

Project: Kansas Speedway

Service: Structural DesignService: New Building Structural SystemsService: Construction EngineeringIndustry: Public SafetyIndustry: GovernmentType: Structural Engineering+17 more

Livingston Engineering

Brighton, MI

Your Blueprint for Success

WebsitePhone1 office2 projects3 credentialsUpdated Jun 2026

Project: GM North-South Straightaway

Service: Civil EngineeringService: Commercial Site DevelopmentService: Earthwork Balance ServicesIndustry: CommercialIndustry: ResidentialType: Civil Engineering+34 more

Michaud Cooley Erickson

Minneapolis, MN

Innovative Engineering. Impactful Experiences.

Website1 office11 projects6 leaders18 credentials3 publicationsFounded 1974

Project: XWA: Williston International Airport

Service: Mechanical EngineeringService: HVAC and Climate Control SystemsService: Plumbing and Piping DesignIndustry: AviationIndustry: CommercialType: MEP+22 more

Morrison-Maierle

Smart Engineering. Real-World Impact.

Website7 projectsUpdated Jun 2026

Project: Allendale Fish Screen

Service: EngineeringService: Civil EngineeringService: Structural EngineeringIndustry: AgricultureIndustry: AirportsType: Civil Engineering+39 more

Newhouse & Associates

Indianapolis, IN

Strategic airport planning, environmental strategies, and capital program management

WebsitePhone4 offices3 leadersUpdated Jun 2026

Service detail: Airport Planning

Service: Airport PlanningService: Airport Master PlanningService: Airport Land Use PlanningIndustry: AirportsIndustry: TransportationType: Acoustic Consulting+22 more

NextGov Solutions

Tacoma, WA

Engineering and management consulting

Website1 office1 projects1 leadersUpdated Jun 2026

Project: Safe Streets for All Action Plan

Service: Civil Engineering & Infrastructure SupportService: Utility InfrastructureService: Transportation InfrastructureIndustry: GovernmentIndustry: UtilitiesType: Civil Engineering+25 more

Pond

Pioneering Innovation Since 1965

Website8 projects3 leaders2 credentialsFounded 1965Size Estimate: 850+ employeesUpdated Jun 2026

Project: Gary/Chicago Airport Air Cargo Development Services

Service: EngineeringService: Civil EngineeringService: Structural EngineeringIndustry: AviationIndustry: DefenseType: Architecture & Engineering+101 more

Program Controls Inc.

Miami, FL

World-Class Services To Build The Future

WebsitePhone1 office4 projects6 leaders12 credentialsFounded 2002

Project: MIA Terminal D Extension

Service: Program ManagementService: Project ManagementService: Program Management PlanIndustry: AviationIndustry: AirportsType: Civil Engineering+45 more