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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A1 Consulting Group, Inc.

Raleigh-Durham, NC

Leaders in Design, Construction, and Environmental Services

WebsitePhone1 office8 projects1 leaders5 credentialsFounded 1971

Project: RDU Airport Terminal 2 Expansion

Service: Engineering and Design ServicesService: Geotechnical and Geological EngineeringService: Civil and Site EngineeringIndustry: AirportsIndustry: CommercialType: Civil Engineering+41 more

AENY Engineering P.C.

Northport, NY

Cost Effective Engineering

WebsitePhone2 officesUpdated Jun 2026

Service detail: Naval Architecture and Marine Engineering

Service: Naval Architecture and Marine EngineeringService: Vessel Design and Construction SupportService: Shipboard Systems IntegrationIndustry: AirportsIndustry: TransitType: Naval Architecture+27 more

AESCO, Inc.

Huntington Beach, CA

Building America from the ground up since 1993

WebsitePhone1 office3 projectsFounded 1993Updated Jun 2026

Project: I-405 Improvement Project

Service: Geotechnical EngineeringService: Geotechnical drilling and field explorationService: Soils evaluationIndustry: CommercialIndustry: GovernmentType: Geotechnical Engineering+25 more

AKRF

AKRF is a multidisciplinary consulting and engineering firm with more than 400 employees across 16 offices and remote locations nationwide. It provides integrated environmental, planning, engineering, and technical services to clients in land development, transportation, energy, and water sectors. AKRF's expertise spans environmental impact assessment, civil engineering, traffic and transportation planning, acoustics, geotechnical engineering, water resources, site remediation, landscape architecture, and climate resilience and adaptation.

Website8 leadersSize Estimate: 400 employeesUpdated Jun 2026

Service detail: Environmental Services

Service: Environmental ServicesService: Environmental Impact AssessmentService: Air QualityIndustry: Land DevelopmentIndustry: TransportationType: Civil Engineering+50 more

AP Engineering & Consulting, Inc.

Greenfield, IN

AP Engineering & Consulting, Inc. (APEC) is a full-service geotechnical engineering, environmental consulting, compliance management, and construction materials testing firm based in Greenfield, Indiana. APEC's team of licensed professional engineers, geologists, and scientists delivers quality, efficient, and value-added solutions for commercial, residential, and municipal projects. Its INDOT-prequalified and AASHTO-certified in-house laboratory supports construction materials testing in accordance with ASTM and AASHTO standards.

WebsitePhone1 office3 credentialsUpdated Jun 2026

Service detail: Geotechnical Engineering

Service: Geotechnical EngineeringService: Subsurface ExplorationsService: Soil BoringsIndustry: CommercialIndustry: RetailType: Geotechnical Engineering+37 more

AULtec, Inc.

Gaithersburg, MD

Professional Civil Engineering and Land Surveying Services

Website1 office5 projects2 leaders7 credentialsFounded 1994Size Estimate: 10-49 employees

Project: Pre-stressed Concrete Slab Bridge No. 10172 Replacement

Service: Civil EngineeringService: Site & Land DevelopmentService: Hydrology & Stormwater ManagementIndustry: GovernmentIndustry: Land DevelopmentType: Civil Engineering+19 more

Applied Science, Inc.

Southfield, MI

Solutions to your Challenges

WebsitePhone2 offices3 leadersFounded 1984Updated Jun 2026

Service detail: Civil and Site Design

Service: Civil and Site DesignService: Site Planning and Subdivision LayoutService: Grading and Roadway DesignIndustry: Water SupplyIndustry: WastewaterType: Civil Engineering+36 more

Base Geotech Inc.

Los Angeles, CA

Geotechnical, Geological and Environmental Consultants

WebsitePhone1 office2 leadersUpdated Jun 2026

Service detail: Geotechnical and Construction Materials Testing

Service: Geotechnical and Construction Materials TestingService: Site EvaluationService: Subsurface ExplorationIndustry: Environmental & RemediationIndustry: Waste ManagementType: Civil Engineering+33 more

Budinger & Associates, Inc.

Spokane Valley, WA

Geotechnical Engineering throughout the Northwest

WebsitePhone2 offices3 projects7 leadersFounded 1976Updated Jun 2026

Project: I-90 SH-41 Interchange Temporary Shoring

Service: Geotechnical EngineeringService: Building FoundationsService: Airfield PavementsIndustry: GovernmentIndustry: InfrastructureType: Geotechnical Engineering+41 more

CAS Consulting & Services, Inc.

Austin, TX

Civil engineering, program management, and construction management solutions for water, wastewater, and transportation infrastructure

WebsitePhone4 offices6 projects8 leaders25 credentialsFounded 1999

Project: Huebner Creek Regional Stormwater Facility

Service: Water & Wastewater EngineeringService: Water Distribution Evaluation and DesignService: Collection System Design and RehabilitationIndustry: Water SupplyIndustry: WastewaterType: Civil Engineering+31 more

CDM Smith

Boston, MA

CDM Smith is an engineering, construction, and environmental consulting firm headquartered in Boston, Massachusetts, with over 7,000 colleagues and 120+ offices worldwide. With 79 years of impact (founded circa 1947 as Camp, Dresser & McKee), it delivers engineering, construction, and environmental services spanning water and wastewater infrastructure, environmental remediation, transportation, energy, and federal and commercial facilities. CDM Smith's practices include drinking water, conveyance, wastewater, stormwater, environmental emerging contaminants, geotechnical and tunnels, MEP and fire protection, architecture, automation, transportation, energy, and climate resilience. It operates Trinnex, a wholly-owned software subsidiary offering the dataCAST SaaS platform and advanced analytics for environmental and infrastructure data management.

Website1 office6 projectsFounded 1947Size Estimate: 7,000 employeesUpdated Jun 2026

Project: PFAS Data to Decisions - U.S. Air Force (Dover AFB)

Service: Water and Wastewater EngineeringService: Drinking WaterService: ConveyanceIndustry: Water SupplyIndustry: WastewaterType: Civil Engineering+30 more

CPP Wind Engineering Consultants

Windsor, CO

Pioneering the next generation of wind engineering

Website4 offices5 projects8 leaders3 credentials1 publicationsFounded 1981

Project: VIA 57 WEST

Service: Wind Tunnel TestingService: Structural Wind Load StudiesService: Wind on CladdingIndustry: CommercialIndustry: HealthcareType: Structural Engineering+34 more

CSA Group

San Juan, PR

Full-Service Project Delivery and Program Management

WebsitePhone8 offices5 projects5 leaders4 credentialsSize Estimate: 50-199 employees

Project: PR-52 Congestion Management Project

Service: Program & Construction ManagementService: Program ManagementService: Construction ManagementIndustry: AirportsIndustry: CommercialType: Architecture & Engineering+37 more

Collier Consulting, Inc.

Stephenville, TX

We Bring a World of Solutions

WebsitePhone11 offices18 leadersFounded 1998Size Estimate: 25-50 employeesUpdated Jun 2026

Service detail: Geoscience

Service: GeoscienceService: GroundwaterService: EnvironmentalIndustry: Water ResourcesIndustry: Water SupplyType: Environmental Engineering+30 more

Colliers Engineering & Design

Holmdel, NJ

Your success is our success; together we shape the spaces that move communities forward.

WebsitePhone1 office8 projects17 leaders8 credentialsSize Estimate: 1,000+ employees

Project: Frank Sinatra Drive Sinkhole & Emergency Seawall Rehabilitation

Service: Architecture & DesignService: Architectural DesignService: Building Engineering SystemsIndustry: CommercialIndustry: Data CentersType: Architecture & Engineering+68 more

Cornerstone Earth Group, Inc.

Sunnyvale, CA

From the Ground Down - geotechnical, environmental, and construction services for the Bay Area development community.

WebsitePhone1 office6 projects15 leaders2 credentialsFounded 2007

Project: Overton Moore Properties - Oaks Business Park

Service: Environmental ServicesService: Phase I Environmental Site AssessmentsService: Preliminary Endangerment AssessmentsIndustry: CommercialIndustry: Land DevelopmentType: Environmental Engineering+77 more

Creek Engineering, Inc.

Port Charlotte, FL

Design it right. The first time.

WebsitePhone1 officeUpdated Jun 2026

Service detail: Civil Engineering

Service: Civil EngineeringService: Site planning and layoutService: Stormwater management systemsIndustry: Land DevelopmentIndustry: ResidentialType: Civil Engineering+26 more

DHDC Engineering Consulting Services, Inc.

Columbus, OH

Providing cost-effective solutions to your engineering needs.

WebsitePhone2 offices15 projects4 leaders7 credentialsSize Estimate: 20+ employees

Project: City of Columbus Pump Station

Service: Geotechnical EngineeringService: Soil Borings and Subsurface InvestigationsService: Foundation, Retaining Structure, and Tunnel DesignIndustry: InfrastructureIndustry: TransportationType: Geotechnical Engineering+19 more

Diaz-Yourman & Associates

Geotechnical consulting services for infrastructure, transportation, and environmental projects

Website1 projects4 credentialsFounded 1992Updated Jun 2026

Project: Anaheim Regional Transportation Intermodal Center (ARTIC), Phase 1

Service: Geotechnical DesignService: Site and Route EvaluationsService: Geologic Hazard AssessmentsIndustry: Highways & RoadsIndustry: FederalType: Geotechnical Engineering+42 more

Distinct Engineering Solutions, Inc.

Responsive, service-oriented civil engineering

Website10 projects3 leaders22 credentialsUpdated Jun 2026

Project: MTA NYCT 7 Subway Extension Site K

Service: Site Civil EngineeringService: Site planning and land developmentService: Regulatory permitting coordinationIndustry: InfrastructureIndustry: TransportationType: Civil Engineering+30 more

EXP

Brampton, ON

Multidisciplinary engineering, architecture, design and consulting services.

Website1 office6 projects3 leaders10 credentials5 publicationsFounded 1906

Project: Southwest Calgary Ring Road

Service: Architecture and DesignService: Architectural designService: Interior space planningIndustry: TransportationIndustry: TransitType: Architecture & Engineering+95 more

Earth Design Associates, Inc.

Hartford, CT

Consulting Engineers and Scientists

WebsitePhone2 offices1 leadersUpdated Jun 2026

Service detail: Civil and Geotechnical Engineering

Service: Civil and Geotechnical EngineeringService: Geotechnical Site InvestigationsService: Foundation DesignIndustry: TransportationIndustry: InfrastructureType: Civil Engineering+25 more

Edifica USA

Lake Forest, CA

Multi-discipline geotechnical, structural, and environmental engineering services

WebsitePhone2 offices1 projectsUpdated Jun 2026

Project: SPLA Port

Service: Geotechnical EngineeringService: Geotechnical Design and AnalysisService: Subsurface Exploration for InfrastructureIndustry: Ports & HarborsIndustry: Highways & RoadsType: Geotechnical Engineering+40 more

EnTech Engineering, Inc.

St. Louis, MO

Specialists in Non-Invasive Diagnostics

WebsitePhone1 officeUpdated Jun 2026

Service detail: Subsurface Diagnostics and Non-Destructive Testing

Service: Subsurface Diagnostics and Non-Destructive TestingService: Pipeline Leak DetectionService: Pavement and Concrete InspectionIndustry: AviationIndustry: Oil & GasType: Acoustic Consulting+14 more