Chengdu Railway Bureau (Chinese: 成都铁路局) is a regional bureau affiliated to the China Railway Corporation (formerly the Ministry of Railway). It is in charge of 9 primary railway routes, with operating length of 4,457.8 kilometers. It oversees the railway networks in Sichuan, Chongqing, Guizhou, although the portion of Nanning-Kunming railway in Guizhou is administered by Kunming Railway Bureau.
References
Chengdu Railway Bureau Wikipedia(Text) CC BY-SA