China Railway Major Bridge Reconnaissance & Design Institute Co., Ltd. (or BRDI in abbreviation), was founded in 1950 as a state-owned company with more than 500 employees, three of which are members of the Chinese Academy of Engineering and three of which are Chinese Masters of Engineering Design. BRDI provides various engineering services, including: bridge surveys, site investigations, engineering design, design proof checks, consultancy, scientific research, structural inspections, retrofit and monitoring, construction supervision, project management, and D&B project implementation.

During the past 59 years, BRDI has provided engineering investigations, surveys, and design for more than 600 modern, major bridges of various types throughout China and more than 10 other countries all over the world. This includes work on 16 bridges across bays, 41 across the Yangtze River and 23 across the Yellow River. Almost all long-span railway bridges and combined rail-cum-road bridges in China are designed by BRDI.