Public engineering firm directory

Find engineering consulting firms by capability and location.

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ARM Group LLC

Hummelstown, PA

Precise. Responsive. Solutions.

WebsitePhone1 office1 projects8 credentialsFounded 1998Size Estimate: 250-500 employees

Project: Annapolis Landfill Solar

Service: Civil Engineering & Land SurveyingService: Site Planning & EntitlementService: Site Plan DesignIndustry: CommercialIndustry: RetailType: Automation & Controls+52 more

Acres LLC

West Norriton, PA

Utility Engineering & Infrastructure Design

Website1 office1 leadersFounded 2022Updated Jun 2026

Service detail: Utility Engineering Design

Service: Utility Engineering DesignService: Water Distribution Infrastructure DesignService: Power Distribution Infrastructure DesignIndustry: UtilitiesIndustry: Water SupplyType: Civil Engineering+15 more

Advanced Infrastructure Design, Inc.

Hamilton, NJ

Advanced Infrastructure Design, Inc. (AID) is a consulting engineering practice established in 1998. Headquartered in Hamilton, New Jersey, with an office in Philadelphia, Pennsylvania, it is staffed by licensed Professional Engineers, scientists, researchers, and technicians. The practice specializes in transportation infrastructure preservation, deploying advanced non-destructive testing (NDT) technologies to evaluate and design solutions for roads, bridges, tunnels, airports, substructures, foundations, and parking structures. It is led by President Mojgan Mohtashami, PhD, MBA.

Website2 offices1 leadersFounded 1998Size Estimate: 10-30 employeesUpdated Jun 2026

Service detail: Pavement Engineering

Service: Pavement EngineeringService: Comprehensive Non-Destructive Field TestingService: Functional LCMS AssessmentIndustry: GovernmentIndustry: TransportationType: Civil Engineering+57 more

Barry Isett & Associates, Inc.

Allentown, PA

Multi-Discipline Engineers and Consultants

WebsitePhone12 offices4 leaders4 credentialsFounded 1977Size Estimate: 300 employees

Service detail: Design Services

Service: Design ServicesService: Civil Land DevelopmentService: Structural EngineeringIndustry: EducationIndustry: HealthcareType: Civil Engineering+32 more

Endeavor Professional Services, LLC

State College, PA

Engineering Excellence for the Future

WebsitePhone1 officeUpdated Jun 2026

Service detail: Civil Engineering & Permitting

Service: Civil Engineering & PermittingService: Preliminary Site Scouting, Routing, and SelectionService: Facility DesignIndustry: Oil & GasIndustry: UtilitiesType: Civil Engineering+29 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

GeoTech Engineering, Inc.

Morrisdale, PA

Providing concise and cost-effective engineering solutions

WebsitePhone3 offices2 credentialsFounded 1996Updated Jun 2026

Service detail: Civil/Site Engineering

Service: Civil/Site EngineeringService: Commercial, Industrial and Retail Site DevelopmentService: Residential Site Feasibility StudiesIndustry: MiningIndustry: Oil & GasType: Civil Engineering+39 more

Gilmore & Associates, Inc.

New Britain, PA

Building on a Foundation of Excellence

WebsitePhone5 offices2 projects7 leadersFounded 1918Size Estimate: 200+ employees

Project: Friendship Park Design

Service: Community PlanningService: Master PlanningService: Zoning RegulationsIndustry: GovernmentIndustry: TransportationType: Civil Engineering+52 more

HBK Engineering, LLC

Chicago, IL

A Proven Leader in Utility Engineering

WebsitePhone29 offices6 credentialsFounded 1998Size Estimate: 900+ employeesUpdated Jun 2026

Service detail: Electrical Utility Infrastructure Design

Service: Electrical Utility Infrastructure DesignService: Transmission and distribution line designService: Substation designIndustry: Electric UtilitiesIndustry: Power GenerationType: Environmental Engineering+48 more

Leake Engineering, LLC

Philadelphia, PA

Leake Engineering, LLC is a multi-discipline engineering consulting practice headquartered in Philadelphia, Pennsylvania, with licensure in all 50 states. Originating in 2007 on Leake Avenue in New Orleans near the Army Corps of Engineers district during post-Katrina rebuilding, the practice subsequently relocated its primary operations to the Greater Philadelphia area. It serves commercial, residential, multi-family, industrial, and government clients nationwide. Core services span structural engineering, civil engineering, geotechnical investigations, and field inspection services.

WebsitePhone3 offices1 leadersFounded 2007Updated Jun 2026

Service detail: Structural Engineering

Service: Structural EngineeringService: Facilities Maintenance and RepairService: Multi-family, Commercial, and Industrial DesignIndustry: CommercialIndustry: ResidentialType: Structural Engineering+28 more

McKim & Creed

Raleigh, NC

People Helping People Solve Complex Infrastructure Challenges

Website7 offices7 projects2 credentialsFounded 1984Size Estimate: 500-1,000 employeesUpdated Jun 2026

Project: City of Sarasota Lift Station 87

Service: Water & Wastewater EngineeringService: Water ManagementService: Wastewater ManagementIndustry: Water SupplyIndustry: WastewaterType: Automation & Controls+82 more

Mueser Rutledge Consulting Engineers

New York, NY

Built on firm foundations

WebsitePhone3 offices8 projects11 leaders16 credentials5 publications

Project: One World Trade Center

Service: Geotechnical EngineeringService: Subsurface InvestigationsService: Earthquake EngineeringIndustry: BridgesIndustry: CommercialType: Geotechnical Engineering+41 more

Partner Engineering and Science, Inc.

Pasadena, CA

Engineers Who Understand Your Business

WebsitePhone17 offices7 projects11 leadersSize Estimate: 1,500+ employeesUpdated Jun 2026

Project: Adaptive Reuse of North Riverfront Historic Industrial Portfolio

Service: Building Assessments & EngineeringService: Property Condition Assessment ReportsService: Commercial Building InspectionIndustry: CommercialIndustry: Multifamily ResidentialType: Environmental Engineering+53 more

PennCore Consulting LLC

South Williamsport, PA

The Core Foundation of Your Solutions

WebsitePhone2 offices3 leadersFounded 2019Updated Jun 2026

Service detail: Engineering

Service: EngineeringService: Land DevelopmentService: Oil & Gas Well Pad Layout and DesignIndustry: Land DevelopmentIndustry: Oil & GasType: Civil Engineering+50 more

Pennoni

Philadelphia, PA

Partners for What's Possible

Website1 office5 projects6 leaders6 credentials2 publicationsFounded 1966

Project: I-95 Central Access Philadelphia (CAP)

Service: Civil/SiteService: Site Planning & Land DevelopmentService: Permitting & EntitlementIndustry: CommercialIndustry: RetailType: Civil Engineering+136 more

RETTEW

Lancaster, PA

RETTEW is an industry-leading engineering consulting firm offering more than 600 engineering, environmental, surveying, planning, safety, and related technical services across a diverse range of markets including transportation, energy, development, utilities, oil and gas, healthcare, and industrial sectors. Founded in 1969, RETTEW partners with public and private clients to deliver innovative, efficient solutions on schedule and on budget.

WebsitePhone1 officeFounded 1969Updated Jun 2026

Service detail: Civil Engineering

Service: Civil EngineeringService: Site Planning and DesignService: Site DevelopmentIndustry: TransportationIndustry: Oil & GasType: Civil Engineering+39 more

Ravi Engineering & Land Surveying, P.C.

Rochester, NY

Over 30 Years of Engineering Innovation and Excellence

WebsitePhone6 offices5 projects12 leaders3 credentialsFounded 1995

Project: Seneca Falls DRI

Service: Structural EngineeringService: Building Structural DesignService: Foundation and Framing AnalysisIndustry: BridgesIndustry: TransportationType: Structural Engineering+29 more

The Lexis Group, LLC

Harrisburg, PA

The Lexis Group, LLC is a Harrisburg, Pennsylvania civil engineering and professional services practice offering subsurface utility engineering (SUE), civil engineering, site design, land planning, survey and mapping, landscape architecture, and construction inspection and management. Its management team carries over 65 years of combined A/E industry experience serving transportation agencies, state and local governments, commercial and industrial developers, healthcare campuses, and land development clients.

WebsitePhone1 officeUpdated Jun 2026

Service detail: Subsurface Utility Engineering (SUE)

Service: Subsurface Utility Engineering (SUE)Service: Records ResearchService: Utility DesignatingIndustry: TransportationIndustry: GovernmentType: Civil Engineering+36 more

The Mannik & Smith Group, Inc.

Toledo, OH

Technical Skill. Creative Spirit.

Website3 offices8 projects4 leaders2 credentialsFounded 1955Size Estimate: 50-200 employees

Project: Waterfront Walkway Seawall

Service: Civil EngineeringService: Site DevelopmentService: Stormwater Management & Green InfrastructureIndustry: TransportationIndustry: GovernmentType: Civil Engineering+59 more

Total Engineering & Consulting Services, LLC

Norristown, PA

Designing the Future

WebsitePhone3 offices8 leadersUpdated Jun 2026

Service detail: Civil, Mechanical & Electrical Engineering

Service: Civil, Mechanical & Electrical EngineeringService: Civil EngineeringService: Mechanical EngineeringIndustry: UtilitiesIndustry: GovernmentType: Civil Engineering+37 more

Trans Pacific Engineering Corp

Lower Gwynedd, PA

Trans-Pacific Engineering Corporation (TPEC) is a Lower Gwynedd, Pennsylvania civil and environmental engineering practice delivering full-service solutions for infrastructure, land development, stormwater management, structural design, and environmental remediation. It serves residential, commercial, industrial, and municipal clients across the greater Philadelphia region, combining technical engineering expertise with public outreach and engagement from project inception through construction.

WebsitePhone1 office5 projectsUpdated Jun 2026

Project: La Salle University Stormwater Management

Service: Civil EngineeringService: Land DevelopmentService: Exterior Site PlanningIndustry: ResidentialIndustry: CommercialType: Civil Engineering+46 more