Public engineering firm directory

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CLA Engineers, Inc.

Norwich, CT

CLA Engineers, Inc. is a consulting engineering firm incorporated in 1984 and headquartered in Norwich, Connecticut. CLA specializes in all aspects of civil engineering and provides civil, structural, geotechnical, inspection, and surveying services to private, institutional, public, commercial, and industrial clients throughout Eastern Connecticut and New England. Its team of principals and staff takes projects from the conceptual and planning stages through design and completed construction. CLA also serves as on-call Town Engineers for several municipalities in Eastern Connecticut, assisting Selectmen, Boards, Commissions, and Public Works Departments. In-house capabilities extend to land surveying and subdivision design, GPS/GIS data collection, marine and dock engineering, bridge rehabilitation and construction, and inspection and testing of construction materials. CLA Engineers, Inc. is a corporate member of the U.S. Green Building Council.

WebsitePhone1 office5 leaders21 credentialsFounded 1984Updated Jun 2026

Service detail: Civil Site Engineering

Service: Civil Site EngineeringService: Structural EngineeringService: Geotechnical EngineeringIndustry: GovernmentIndustry: CommercialType: Civil Engineering+22 more

DRS Seismic Consultants

Oxford, CT

Elevating Geotech Excellence!

WebsitePhone1 office4 projects1 leadersFounded 1984Updated Jun 2026

Project: O&G Industries Aggregate Blast Monitoring

Service: Seismic and Vibration MonitoringService: Vibration MonitoringService: Quarry Operations MonitoringIndustry: MiningIndustry: Aggregates & QuarryingType: Geotechnical Engineering+6 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

Freeman

Hartford, CT

Elevate Your Ground Game

Website1 office7 projects8 leadersFounded 2009Size Estimate: 10-49 employeesUpdated Jun 2026

Project: UConn Football Complex

Service: Civil EngineeringService: Site Layout & DesignService: Grading & Drainage DesignIndustry: GovernmentIndustry: Land DevelopmentType: Civil Engineering+40 more

GEODesign, Inc.

Middlebury, CT

Underground Intelligence

WebsitePhone5 offices10 projects10 leaders1 credentialsFounded 1995

Project: State Pier Wind Energy Project

Service: Geotechnical EngineeringService: Geotechnical Reports & Subsurface ExplorationService: Foundation EngineeringIndustry: InfrastructureIndustry: BridgesType: Geotechnical Engineering+32 more

GZA GeoEnvironmental, Inc.

Norwood, MA

Solving Complex Challenges in Natural and Built Environments

WebsitePhone35 offices4 projectsSize Estimate: 800 employeesUpdated Jun 2026

Project: Upper Roberts Meadow Reservoir Dam Breach and Stream Restoration Project

Service: Geotechnical EngineeringService: Environmental Site Investigation and RemediationService: Environmental Site InvestigationIndustry: AgricultureIndustry: IndustrialType: Geotechnical Engineering+29 more

Garg Consulting Services, Inc.

Rocky Hill, CT

Quality Engineering Beyond Your Expectations

WebsitePhone2 offices2 projects9 leadersFounded 1990Size Estimate: 81+ employees

Project: New Haven Line Power Program: Phase 1 - Signal Substations

Service: Structural & Civil EngineeringService: Highway and Railroad Bridge DesignService: Highway & Railroad Bridge Condition Inspection & AnalysisIndustry: GovernmentIndustry: FederalType: Civil Engineering+39 more

Green Site Design, LLC

Norwich, CT

Civil engineering with a sustainable approach

WebsitePhone1 office1 leaders4 credentialsFounded 2009Updated Jun 2026

Service detail: Civil Engineering

Service: Civil EngineeringService: Site Feasibility StudiesService: Storm Water ManagementIndustry: CommercialIndustry: IndustrialType: Civil Engineering+28 more

RACE Coastal Engineering

Stratford, CT

Unmatched Expertise Where Water Meets Land(TM)

WebsitePhone2 offices8 projects9 leaders6 credentials3 publications

Project: Victoria Beach Stone Revetment and Seawall

Service: Coastal EngineeringService: Shoreline Restoration and ProtectionService: Coastal Resiliency Planning and DesignIndustry: ResidentialIndustry: MarineType: Coastal Engineering+63 more

Siefert Associates, LLC

Watertown, CT

Siefert Associates, LLC is a construction engineering firm serving clients in the New York City metropolitan area and beyond. Founded in June 2000 by Vincent Siefert, PE, the practice grew from a single-person operation to a team of more than 35 engineers across offices in Watertown, Connecticut, and White Plains, New York. Its specialty is construction engineering, determining the most efficient and creative means and methods for large-scale construction projects, complemented by structural, demolition, erection, and geotechnical engineering disciplines.

Website2 offices2 leadersFounded 2000Size Estimate: 35+ employeesUpdated Jun 2026

Service detail: Construction Engineering

Service: Construction EngineeringService: Temporary Support SystemsService: Staged Construction AnalysisIndustry: InfrastructureIndustry: BridgesType: Structural Engineering+20 more

The Quill Group

Bridgeport, CT

Reinventing the Art of Engineering

WebsitePhone1 office1 projects7 leaders5 credentialsFounded 1993

Project: Milford Hospital

Service: Geotechnical EngineeringService: Structural EngineeringService: Land SurveyingIndustry: CommercialIndustry: ResidentialType: Civil Engineering+22 more

Tighe & Bond

Westfield, MA

Environmental consulting with purpose.

Website8 offices2 projects7 leaders2 credentialsFounded 1911Size Estimate: 500-999 employees

Project: Climate Vulnerability Assessment for Massachusetts Watersheds

Service: Building ServicesService: MEP/FP DesignService: Energy Analysis & ModelingIndustry: Water SupplyIndustry: WastewaterType: Civil Engineering+38 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

Wengell, McDonnell & Costello, Inc.

Newington, CT

Civil engineering and infrastructure consulting services in Connecticut and Western Massachusetts.

WebsitePhone1 office12 projects3 leaders5 credentialsFounded 1988

Project: Old Farms Road Bridge

Service: Transportation and Infrastructure EngineeringService: Highway and Roadway DesignService: Bridge Design and RehabilitationIndustry: GovernmentIndustry: TransportationType: Civil Engineering+43 more

Whitestone Associates, Inc.

Warren, NJ

Delivering Comprehensive & Innovative Environmental & Geotechnical Solutions

WebsitePhone15 offices9 leaders21 credentialsFounded 1994Updated Jun 2026

Service detail: Environmental Due Diligence

Service: Environmental Due DiligenceService: Site RemediationService: NJDEP Licensed Site Remediation ProfessionalsIndustry: CommercialIndustry: EducationType: Environmental Engineering+29 more