Chengdu–Chongqing Intercity Railway

Chengdu–Chongqing Intercity Railway
Name	Chengdu–Chongqing Intercity Railway
Native name	成渝高速铁路
Type	High-speed rail
Status	Operational
Locale	Sichuan Province; Chongqing Municipality
Start	Chengdu
End	Chongqing
Stations	22
Open	2015–2017 (phased)
Owner	China Railway Corporation
Operator	China Railway Chengdu Group
Line length	308 km
Track	Double-track
Electrification	25 kV 50 Hz AC
Speed	200–350 km/h (design)

Chengdu–Chongqing Intercity Railway is a high-speed rail corridor linking Chengdu and Chongqing across the Sichuan Basin, forming a primary axis in southwestern People's Republic of China transport. The corridor reduced travel time between the two megacities and integrated transport networks anchored by Chengdu Tianfu International Airport, Chongqing Jiangbei International Airport, China National Highways, and regional rail nodes such as Deyang and Mianyang. It is a component of strategic planning by National Development and Reform Commission and Ministry of Railways successor bodies to enhance connectivity in Sichuan and Chongqing Municipality.

Overview

The railway is designed to support intercity and regional mobility with speeds up to 350 km/h on dedicated tracks, aligning with standards used on corridors like the Guangzhou–Shenzhen–Hong Kong Express Rail Link and the Beijing–Shanghai High-Speed Railway. Built under the auspices of China Railway Corporation and provincial authorities, the route traverses varied topography, linking urban centers such as Deyang, Mianyang, Zigong, Neijiang, and suburban districts of Chongqing. The project reflects priorities in the Western Development Strategy and the Chengdu–Chongqing Economic Zone initiative.

Route and Stations

The mainline stretches approximately 308 km, originating at Chengdu East railway station and terminating at Chongqing West railway station, with major intermediate stops at Wuhou, Pixian, Jintang, Deyang East, Mianyang East, Jinkouhe, Neijiang North, and Zigong North. Branches and feeder connections interface with nodes such as Chengdu North railway station, Chengdu South railway station, and the Chongqing North railway station complex, enabling transfers to interprovincial services like the Lanzhou–Chongqing Railway and the Xi'an–Chengdu high-speed railway. Integration with urban transit systems includes connections to the Chengdu Metro and the Chongqing Rail Transit network.

History and Development

Plans for a high-speed link date to feasibility studies by the China Academy of Railway Sciences and proposals submitted to the National Development and Reform Commission in the early 2000s; formal approval followed broader infrastructure drives under leaders linked to policy initiatives of Hu Jintao and later Xi Jinping. Construction phases commenced amid provincial coordination between Sichuan Provincial Government and the Chongqing Municipal Government, employing contractors including state-owned enterprises like China Railway Engineering Corporation and China Railway Construction Corporation. Key milestones included track completion, electrification, and commissioning tests overseen by the Ministry of Transport and national regulatory bodies, with phased openings increasing service frequency and network resilience.

Infrastructure and Technology

Engineering works encompass long-span bridges, tunnels through karst and alluvial formations, and seismic design measures referencing standards used on projects like the Beijing–Guangzhou High-Speed Railway. Track components employ continuous welded rail and slab track sections similar to innovations by the Beijing Railway Research Institute, with signalling by the China Academy of Railway Sciences' CTCS system compatible with European Train Control System design philosophies. Rolling stock includes models from manufacturers such as CRRC consortia, with electric multiple units (EMUs) optimized for acceleration on intercity timetables and outfitted with passenger amenities developed in collaboration with entities like China National Passenger Transport Corporation.

Operations and Services

Operations are managed by China Railway Chengdu Group under national regulations from the Ministry of Transport and safety supervision by the State Administration of Railway Transport. Timetables provide high-frequency intercity trains, express services, and regional stops; integration with booking and ticketing platforms such as 12306.cn and local ticket offices supports passenger flows. Freight corridors remain separate, with the line prioritizing passenger services to mirror patterns on the Shanghai–Nanjing Intercity Railway. Emergency response frameworks coordinate with Sichuan Provincial Emergency Management Department and Chongqing Emergency Management Bureau for incidents, while maintenance regimes follow standards used across China Railway high-speed assets.

Economic and Regional Impact

The corridor accelerated investment and urbanization across the Chengdu–Chongqing Economic Zone, encouraging industrial relocation and tourism growth tied to destinations like Leshan, Emei Shan, and cultural sites in Chengdu. It bolstered logistics linkages for enterprises such as Sichuan Changhong and Chongqing Changan Automobile by reducing passenger transit times and fostering labor mobility between tech clusters, higher education institutions like Sichuan University, and research centers including the Southwest Jiaotong University. Policy outcomes align with objectives promoted by the National People's Congress for regional integration and are cited in planning documents by the Central Committee of the Communist Party of China.

Future Plans and Upgrades

Planned capacity enhancements include signaling upgrades, station expansions at Chengdu East railway station and Chongqing West railway station, and potential parallel routes to raise throughput comparable to projects like the Beijing–Shenyang high-speed railway. Proposals under discussion involve coordination with the Belt and Road Initiative corridors and interoperability with emerging maglev or ultra-high-speed research led by institutions such as Tsinghua University and the Chinese Academy of Sciences. Local governments continue studies on transit-oriented developments around new stations, with financing mechanisms drawing on models used by China Development Bank and provincial bond issuances to support phased investment.

Category:High-speed rail in China Category:Transport in Sichuan Category:Transport in Chongqing