Public engineering firm directory

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Bowlby & Associates, Inc.

Nashville, TN

Supplying expert assistance in transportation and community noise analysis and mitigation

WebsitePhone1 office3 leaders1 credentials5 publicationsFounded 1991

Service detail: Traffic Noise Analysis and Noise Studies

Service: Traffic Noise Analysis and Noise StudiesService: HUD Noise AssessmentsService: Rail Noise StudiesIndustry: TransportationIndustry: Highways & RoadsType: Transportation Engineering+10 more

CivTech

Scottsdale, AZ

Quality, integrity, and technical expertise providing innovative engineering solutions for traffic, transportation planning, and design.

WebsitePhone3 offices12 projects7 leadersFounded 2002Size Estimate: 5-25 employees

Project: Palisene Traffic Impact Analysis

Service: Traffic EngineeringService: Traffic Impact Analysis StudiesService: Traffic Control PlansIndustry: GovernmentIndustry: TransportationType: Transportation Engineering+46 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

Miller Beam Paganelli Inc

Reston, VA

Professional consulting in acoustics, vibration, and audiovisual system design.

WebsitePhone1 office7 projects3 leadersUpdated Jun 2026

Project: Virginia Tech Davidson Hall

Service: AcousticsService: Mechanical Equipment NoiseService: Interior Room AcousticsIndustry: EducationIndustry: GovernmentType: Acoustic Consulting+15 more

Spartan Management, LLC

Spartan Management, LLC is a professional management and services firm formed in 2006 and registered as a DoD contractor in the Commonwealth of Virginia. It provides organizational management, project management, and systems engineering services across the full project or program life cycle. Spartan Management holds SeaPort-E contracts for professional support services to NAVSEA Warfare Centers and staffs personnel with PMP and DAWIA Level III certifications.

Website1 credentialsFounded 2006Updated Jun 2026

Service detail: Systems Engineering

Service: Systems EngineeringService: Project ManagementService: Organizational ManagementIndustry: DefenseIndustry: FederalType: Defense Engineering+6 more

Wilson Ihrig

San Francisco, CA

Acoustics, Noise & Vibration

Website4 offices4 projects7 leaders3 credentialsFounded 1966Updated Jun 2026

Project: Benaroya Hall Vibration Isolation

Service: Acoustics and Noise Control ConsultingService: Architectural AcousticsService: Transit and Transportation Noise ControlIndustry: TransportationIndustry: TransitType: Acoustic Consulting+20 more