
Bowlby & Associates, Inc.
Nashville, TNSupplying expert assistance in transportation and community noise analysis and mitigation
Service detail: Traffic Noise Analysis and Noise Studies
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Supplying expert assistance in transportation and community noise analysis and mitigation
Service detail: Traffic Noise Analysis and Noise Studies

Quality, integrity, and technical expertise providing innovative engineering solutions for traffic, transportation planning, and design.
Project: Palisene Traffic Impact Analysis

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

Professional consulting in acoustics, vibration, and audiovisual system design.
Project: Virginia Tech Davidson Hall

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.
Service detail: Systems Engineering

Acoustics, Noise & Vibration
Project: Benaroya Hall Vibration Isolation