Public engineering firm directory

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Avitility

Ashburn, VA

Trusted Mission Partner delivering cutting edge Audio Visual solutions

WebsitePhone1 officeUpdated Jun 2026

Service detail: Professional AV Design and Engineering

Service: Professional AV Design and EngineeringService: Concept and Capability AssessmentService: System Diagramming and DocumentationIndustry: GovernmentIndustry: FederalType: Defense Engineering+24 more

Chesapeake Bay Group

Newport News, VA

Civil engineering, design, planning, and permitting in the Mid-Atlantic.

WebsitePhone1 officeUpdated Jun 2026

Service detail: Civil Site Engineering

Service: Civil Site EngineeringService: Site Plan AdvisementService: Development Design and ApprovalIndustry: GovernmentIndustry: Land DevelopmentType: Civil Engineering+25 more

Dadson Consulting Inc

Woodbridge, VA

Dedication and Experience

WebsitePhone1 office18 projects2 leadersSize Estimate: 1-10 employeesUpdated Jun 2026

Project: AWI South Capitol Street Corridor Bridges

Service: Bridge and Transportation StructuresService: Steel and Concrete Bridge DesignService: Foundation Analysis and DesignIndustry: BridgesIndustry: TransportationType: Structural Engineering+27 more

Endesco, Inc.

Rockville, MD

Endesco, Inc. is a multi-discipline civil engineering design, consulting, and construction management firm founded in 1997 and headquartered in Rockville, Maryland. It specializes in water resources, transportation planning and traffic engineering, roadway and lighting design, environmental studies, GIS, and project and construction management, primarily serving state DOTs, transit authorities, counties, cities, and federal agencies across the Washington, DC/Baltimore metro region and beyond.

WebsitePhone2 offices6 projects9 credentialsFounded 1997Size Estimate: 5-25 employees

Project: Transform I-66 Outside the Beltway (Express Lanes), Northern Virginia

Service: Water ResourcesService: Stormwater ManagementService: Hydraulics and HydrologyIndustry: GovernmentIndustry: TransportationType: Civil Engineering+52 more

GuernseyTingle

Williamsburg, VA

Architecture and beyond.

WebsitePhone1 office1 leadersSize Estimate: 11-50 employeesUpdated Jun 2026

Service detail: Planning

Service: PlanningService: Feasibility and Master PlanningService: Design GuidelinesIndustry: Arts & CultureIndustry: Historic PreservationType: Architecture & Engineering+31 more

Guzman & Griffin Technologies, Inc.

Alexandria, VA

Maintaining the safety and efficiency of the National Airspace System

WebsitePhone1 office3 projects4 leadersFounded 1997Size Estimate: 50-199 employees

Project: Surface and Airborne Safety Metrics Automation

Service: Systems & Software EngineeringService: Software Development & Systems IntegrationService: Independent Verification & Validation (IV&V)Industry: AviationIndustry: FederalType: Aviation Engineering+17 more

Kinetic Metrics LLC

Alexandria, VA

Beyond Automotive Safety

WebsitePhone1 office1 projects2 leaders1 credentialsFounded 2015

Project: National Park Service Signage and Transportation Plan

Service: Automotive Regulatory and SafetyService: NHTSA Safety Compliance Consulting and TrainingService: Part 555 Exemptions and NHTSA InterpretationsIndustry: AutomotiveIndustry: TransportationType: Transportation Engineering+11 more

Schwartz & Associates, Inc.

Lynchburg, VA

Schwartz & Associates, Inc. is a structural and highway design engineering practice established in 1981, with offices in Lynchburg and Roanoke, Virginia. The practice specializes in bridge design, bridge and highway structure safety inspection, roadway design, and bridge rehabilitation, serving the Virginia Department of Transportation as its largest client alongside approximately 40 Virginia municipalities. Its personnel have performed or supervised more than 40,000 structure safety inspections and designed hundreds of plans for highway structures and bridges. Its services encompass new bridge and bridge repair design, pedestrian and bicycle facility design, construction administration, and traffic control planning.

Website2 offices12 projects2 leadersFounded 1981Size Estimate: 1-49 employeesUpdated Jun 2026

Project: Rte. 128 (Candlers Mountain Road) over NS Railway Superstructure Replacement

Service: New Bridge & Bridge Repair DesignService: Superstructure ReplacementService: Substructure RehabilitationIndustry: BridgesIndustry: Highways & RoadsType: Structural Engineering+32 more

Systech Fire Protection LLC

Palos Park, IL

Protecting Life and Property, One Project at a Time

WebsitePhone2 offices1 leadersSize Estimate: 1-10 employeesUpdated Jun 2026

Service detail: Fire Protection Systems Design

Service: Fire Protection Systems DesignService: Automatic Fire Sprinkler SystemsService: Fire Detection and Alarm SystemsIndustry: CommercialIndustry: EducationType: Fire Protection Engineering+28 more

The Ohmega Group

Jacksonville, FL

Your Aviation Electrical Engineering Partner

WebsitePhone3 offices9 projects14 credentialsSize Estimate: 1-24 employeesUpdated Jun 2026

Project: Savannah Hilton Head International Airport

Service: Airfield Lighting DesignService: Runway and taxiway lighting systemsService: Computerized control lighting systemsIndustry: AirportsIndustry: AviationType: Aviation Engineering+40 more