The Bang Na Expressway, officially Burapha Withi Expressway, is a 55-kilometer-long (34 mi) six-lane elevated highway in Thailand. It is a toll road running above National Highway 34 and is owned by the Expressway Authority of Thailand (EXAT).

Louis Berger is a full-service engineering, architecture, planning, environmental, program and construction management and economic development firm based in Morristown, New Jersey. Founded in 1953 in Harrisburg, Pennsylvania by Dr. Louis Berger, the firm employed nearly 6,000 employees in more than 50 countries worldwide. The company was acquired by WSP Global in 2018.