The Third Ring Road in Chengdu is about 51 km long, with a planned red line of 80 m and a green line of 50 m on both sides. The two-way 8-lane main line is a fully closed urban expressway. The auxiliary road is a two-way six lane road with non motor vehicles and sidewalks. The Third Ring Road, as the main channel of rapid regional transformation in Chengdu,which is an important part of the regional greenway of "one axis, two mountains, three rings and seven belts", undertakes many important urban functions.

In recent years, the main interchange construction of Liuli , Tianfu , Wuhou pile foundation and auxiliary road renovation are in process all day and night. "In this bid section, shift construction is carried out during the day and night, and the operation time of the machine is extended by the shift of personnel, so as to achieve the purpose of acceleration.".

Chengdu Road and bridge operation and Management Co., Ltd. pay great attention on it. There Skyboom boom lift between the Third Ring Road Liuli interchange and jiaozi interchange, effectively meets the needs of bridge construction from the height, distance and up and over clearance,etc, greatly improves the operation efficiency, and stably ensures the safety of construction personnel.