W G Zimmerman Engineering

HNTB Corp in Santa Ana, CA is a leading infrastructure solutions provider with expertise in architecture, aviation, bridges, construction management, and more. With a focus on innovation and sustainability, HNTB is dedicated to enhancing mobility, opportunity, and quality of life for communities across the United States. With a century of service, HNTB is committed to rethinking the future of mobility through employee ownership, inclusion, diversity, and equity. The company's projects, such as the Brightline West high-speed rail line, demonstrate their dedication to creating impactful and efficient transportation solutions for the nation. Generated from the website

AECOM is an international professional technical services company providing consulting, design, program and construction management and operations and maintenance support to the transportation, environmental and building industries. The company serves both government and private clients. AECOM also provides technical support, international development assistance, and mining and power services. AECOM is headquartered in Los Angeles and operates additional offices throughout the United States., Canada, Asia, the Middle East, Africa, Australia and Europe.