HNTB Corporation is an employee-owned infrastructure firm that serves federal, state, municipal and private clients. It works with a team of more than 3,000 staff members. The firm operates over 60 offices throughout the United States. HNTB Corporation provides planning, design, and program and construction management services for highway, toll road, bridge, airport, rail and water projects. It offers environmental planning and assessment, roadway and parking facility design, program and construction management, and business and financial consulting services. The firm additionally provides Cargo and support facility planning and design and integrated security solutions for passenger, baggage, perimeter and cargo screening functions.