Public engineering firm directory

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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

Century 3 Inc.

Greer, SC

Century 3 Inc. (C3) is an industrial engineering and construction company founded in 1977 in Greer, SC. C3 delivers engineering design, procurement, self-perform industrial construction, construction management, facility relocation, and maintenance services to clients in the food and beverage, pharmaceutical and life science, advanced manufacturing, automotive, chemical, high-tech, mission-critical, and general industrial markets. With 1,500 or more engineering and construction professionals, C3 holds professional engineering licenses and unlimited general contractor licenses throughout the United States, as well as trade-specific electrical, mechanical, plumbing, and piping contractor licenses. US offices are in Greer SC, Augusta GA, Pittsburgh PA, and Phoenix AZ, with additional international entities in China and Europe.

Website4 offices6 leadersFounded 1977Size Estimate: 1,500+ employeesUpdated Jun 2026

Service detail: Engineering Design

Service: Engineering DesignService: Self-Perform Industrial ConstructionService: ProcurementIndustry: Food & BeverageIndustry: PharmaceuticalType: Industrial Engineering+12 more

Gibson-Thomas Engineering Co., Inc.

Latrobe, PA

Providing Quality Engineering Services For Over 100 Years

WebsitePhone8 offices4 projectsFounded 1916Size Estimate: 100-249 employeesUpdated Jun 2026

Project: SR 0160-022 Wellersburg Safety Improvements

Service: Transportation ServicesService: Roadway and Bridge DesignService: Hydrology and HydraulicsIndustry: GovernmentIndustry: TransportationType: Civil Engineering+51 more

RMF Engineering

Baltimore, MD

Meticulously Planned, Expertly Designed

WebsitePhone11 offices17 projects2 credentialsSize Estimate: 350 employeesUpdated Jun 2026

Project: Allston Campus District Energy Plant

Service: MEP Building EngineeringService: Building Energy Modeling and Performance AnalysisService: Equipment Upgrades, Efficiency Measures, and Controls IntegrationIndustry: EducationIndustry: HealthcareType: MEP+36 more

Shen Milsom & Wilke

New York, NY

Acoustic, Audiovisual & Technology Design Consultants

WebsitePhone13 offices6 projects36 leadersFounded 1986Size Estimate: 230+ employees

Project: U.S. Embassy in London

Service: AcousticsService: Architectural AcousticsService: Acoustics AssessmentsIndustry: Arts & CultureIndustry: AviationType: Acoustic Consulting+61 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

W.E.C. Engineers, Inc.

Bridgeville, PA

Exceptional solutions for the planning, design, and construction management of bridge, roadway, and infrastructure projects.

WebsitePhone1 office4 projects7 credentialsFounded 1957Updated Jun 2026

Project: Bridge B-448

Service: Bridges and RoadwaysService: Structural Bridge DesignService: Bridge Condition InspectionsIndustry: GovernmentIndustry: TransportationType: Civil Engineering+25 more