Public engineering firm directory

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AED Energy Services

Wyomissing, PA

Designing America's Energy Lifelines

WebsitePhone4 offices9 leaders4 credentialsFounded 1989Updated Jun 2026

Service detail: Chemical and Process Design

Service: Chemical and Process DesignService: Documentation and AnalysisService: Specialized CalculationsIndustry: Oil & GasIndustry: PetrochemicalType: Chemical Engineering+64 more

Baer Engineering and Environmental Consulting, Inc.

Austin, TX

Sustainability through responsible engineering of the built environment.

WebsitePhone1 office9 projects2 credentialsFounded 1992Size Estimate: 1-25 employees

Project: Austin Bergstrom International Airport ConRAC Facility

Service: Engineering and Water ResourcesService: BMP ServicesService: National Flood Insurance Program RegulationsIndustry: EducationIndustry: HealthcareType: Chemical Engineering+83 more

Benham, a Haskell Company

Oklahoma City, OK

Tomorrow's Design Since 1909

WebsitePhone6 offices4 projectsFounded 1909Size Estimate: 200-500 employeesUpdated Jun 2026

Project: Osprey Maintenance Hangars

Service: ArchitectureService: EngineeringService: DesignBuildIndustry: InfrastructureIndustry: HealthcareType: Architecture & Engineering+35 more

Doucet Associates Inc A Kleinfelder Company

Austin, TX

We are Doucet.

WebsitePhone6 offices4 leaders2 credentialsUpdated Jun 2026

Service detail: Land Development

Service: Land DevelopmentService: Master Planned CommunitiesService: Multi-Family DevelopmentsIndustry: CommercialIndustry: RetailType: Civil Engineering+110 more

GAI Consultants, Inc.

Indianapolis, IN

Transforming Ideas Into Reality®

WebsitePhone5 offices24 leaders4 publicationsFounded 1958Updated Jun 2026

Service detail: Environmental Services

Service: Environmental ServicesService: Environmental Impact Analysis and NEPA DocumentationService: Permitting and Regulatory ComplianceIndustry: Power GenerationIndustry: Renewable EnergyType: Civil Engineering+44 more

GTS Consulting

Bryant, AR

Quality results, timely service.

WebsitePhone5 offices5 credentialsFounded 2005Updated Jun 2026

Service detail: Geotechnical Engineering

Service: Geotechnical EngineeringService: Subsurface Drilling and SamplingService: Foundation Design and Support OptionsIndustry: CommercialIndustry: GovernmentType: Environmental Engineering+34 more

IDCUS

Houston, TX

IDCUS is a Texas-based infrastructure consulting and engineering firm with more than two decades of experience delivering planning, civil engineering, and construction management services to public agencies statewide. Its professional team has supported more than $10 billion in infrastructure development for clients including the City of Houston, the City of San Antonio, TxDOT, Harris and Fort Bend counties, VIA Metropolitan Transit, and Houston METRO, covering city streets, drainage systems, major highways, toll roads, and transit networks.

WebsitePhone3 officesUpdated Jun 2026

Service detail: Highway Design and PS&E

Service: Highway Design and PS&EService: County Engineering and DesignService: Construction Engineering and InspectionIndustry: Highways & RoadsIndustry: InfrastructureType: Civil Engineering+10 more

IWA Technical Services Inc.

Dallas, TX

It's more than Push-To-Talk

WebsitePhone1 office1 leaders3 credentialsSize Estimate: 2-5 employeesUpdated Jun 2026

Service detail: RF Engineering & Communications System Design

Service: RF Engineering & Communications System DesignService: NEPA StudiesService: RF Interference Analysis and MitigationIndustry: TelecommunicationsIndustry: Public SafetyType: Telecom / RF Engineering+30 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

Isani Consultants, L.P.

Houston, TX

Designing What Matters

WebsitePhone1 office17 projects5 credentialsFounded 2000Size Estimate: 1-25 employees

Project: Enabling Utilities Landside, George Bush Intercontinental Airport

Service: Transportation EngineeringService: Urban and rural highway designService: Geometric design, driveways, and sidewalksIndustry: InfrastructureIndustry: TransportationType: Aviation Engineering+94 more

LCA Environmental, Inc.

Farmers Branch, TX

Providing Sustainable Environmental Solutions That Stand the Test of Time

WebsitePhone1 office2 projects6 leaders11 credentialsFounded 1992

Project: LBJ Freeway Environmental Compliance

Service: Environmental Site AssessmentService: Phase I Environmental Site AssessmentService: Phase II Environmental Site AssessmentIndustry: GovernmentIndustry: FederalType: Environmental Engineering+22 more

LJA Engineering, Inc.

Houston, TX

Client Focused.

WebsitePhone5 officesFounded 1972Updated Jun 2026

Service detail: Land Development

Service: Land DevelopmentService: Residential Land DevelopmentService: Special Financing District ServicesIndustry: Land DevelopmentIndustry: InfrastructureType: Civil Engineering+68 more

LJA Program Management LLC

Houston, TX

. Client Focused.

WebsitePhone5 offices3 projects5 credentialsFounded 1972Updated Jun 2026

Project: Ranew's E-Coat Masterplan

Service: Aviation ServicesService: Civil EngineeringService: Public Infrastructure and WorksIndustry: GovernmentIndustry: Land DevelopmentType: Civil Engineering+75 more

N-Y Associates, Inc.

Metairie, LA

Excellence in Design Since 1969

WebsitePhone4 offices1 projects7 leadersFounded 1969Updated Jun 2026

Project: Western Tie-In Closure Structure at Bayou Verret (Sellers Canal)

Service: EngineeringService: Transportation EngineeringService: Water and Wastewater EngineeringIndustry: GovernmentIndustry: FederalType: Civil Engineering+26 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

Olsson

Lincoln, NE

Engineering trust.

Website10 offices5 projects10 leaders16 credentials2 publicationsFounded 1956

Project: Baylor Scott & White Medical Center and Clinic in Pflugerville

Service: Civil & Site EngineeringService: Site Design and DevelopmentService: Land SurveyingIndustry: CommercialIndustry: ResidentialType: Civil Engineering+39 more

PND Engineers, Inc.

Anchorage, AK

Designing Innovative, Constructable Solutions for Challenging Environments

Website8 officesFounded 1979Updated Jun 2026

Service detail: Waterfront Engineering

Service: Waterfront EngineeringService: Ports & HarborsService: Cruise Ship Facilities & Ferry TerminalsIndustry: Ports & HarborsIndustry: MarineType: Civil Engineering+33 more

STAR Geoenvironmental, LLC

Katy, TX

Your trusted partner in building a sustainable tomorrow

WebsitePhone1 office5 projects7 credentialsSize Estimate: 1-25 employeesUpdated Jun 2026

Project: USACE Louisville District: ARIMD'S Property Disposal Program

Service: Environmental and Radiological ServicesService: Environmental Site Assessments (Phase I and Phase II)Service: NEPA Reviews and Environmental PlanningIndustry: FederalIndustry: GovernmentType: Environmental Engineering+27 more

T. Baker Smith, LLC

Houma, LA

Empowering people. Enriching communities.

WebsitePhone10 offices10 projectsFounded 1913Size Estimate: 200-400 employeesUpdated Jun 2026

Project: US 190: LA 437 to US 190 Bus (Phase 1)

Service: EngineeringService: PlanningService: Civil & Structural EngineeringIndustry: Oil & GasIndustry: IndustrialType: Civil Engineering+41 more

TLC Engineering, Inc.

Houston, TX

TLC Engineering, Inc. is a Houston-based practice providing multi-disciplinary engineering, environmental planning, construction management, and disaster recovery services. Established in 1994, it serves public, private, and municipal clients across Texas, the Gulf Coast, and national markets. It delivers turnkey services from conceptual design through facilities commissioning, with deep experience in infrastructure projects, pipeline design, and FEMA disaster recovery assistance.

WebsitePhone6 offices10 projects9 leadersFounded 1994Size Estimate: 1-50 employees

Project: Hurricane Harvey - City of La Marque Recovery

Service: EngineeringService: Structural Seismic Analysis and DesignService: Architectural Engineering and PlanningIndustry: GovernmentIndustry: Oil & GasType: Architecture & Engineering+41 more

Urban Engineers Inc

Philadelphia, PA

Be Part of Something Bigger

WebsitePhone14 offices7 projects7 leaders4 credentialsFounded 1960

Project: I-78/SR 61 Bridge Replacement and Interchange Reconstruction

Service: PlanningService: Multimodal Circulation PlanningService: Bicycle & Pedestrian PlanningIndustry: AviationIndustry: BridgesType: Civil Engineering+47 more

infraTECH Engineers & Innovators, LLC

Houston, TX

Designing Infrastructure, Redefining Horizons

WebsitePhone2 offices6 projects1 credentialsSize Estimate: 10-49 employeesUpdated Jun 2026

Project: US 75 Roadway Widening and Reconstruction

Service: Roadway & CivilService: Roadway Schematic DevelopmentService: Roadway and Interchange DesignIndustry: Highways & RoadsIndustry: BridgesType: Civil Engineering+34 more