The Chengdu-Lanzhou Railway is a vital component of China’s mid-to-long-term railway network plan and serves as a railway link between Chengdu in Sichuan Province and Lanzhou in Gansu Province. The railway is designed for passenger trains to travel at speeds of up to 200 km/h, with a total length of 573 kilometers. It is a mixed passenger and freight line, categorized as a first-class, double-track, electrified high-speed railway. Construction started on February 26, 2011. Once completed, travel time from Chengdu to Jiuzhaigou will be reduced to approximately 2 hours, and to Lanzhou to about 4 hours, thereby bringing an end to the history of no railway access in northwestern Sichuan.
The Chengdu-Lanzhou Railway begins in Chengdu and passes through Shifang, Mianzhu, Mao County, and Songpan to Jiuzhaigou, extending north to the Hada Station on the under-construction Lanzhou-Chongqing Railway. The route covers a total length of 463 kilometers, with 378 kilometers in Sichuan Province and 85 kilometers in Gansu Province. Starting from Chengdu and passing through Mao County, Songpan, and Jiuzhaigou County, the railway joins the Lanzhou-Chongqing Railway at Hada Station before reaching its final destination in Lanzhou. This railway is another “Sky Road” built at an altitude of over 3000 meters above sea level, ascending from the 500-meter elevation of the Chengdu Plain to the eastern edge of the Qinghai-Tibet Plateau at an altitude of 3400 meters. The railway route traverses 10 counties, cities, and districts, featuring 16 new stations with a main line of 457.6 kilometers. The line is characterized by a high proportion of bridge and tunnel engineering, with many long and large tunnels, and the engineering geology presents distinct features often described as “four extremes and three highs.”
To the north, the Chengdu-Lanzhou Railway connects with the Lanzhou-Chongqing Railway and, together with the existing Baoji-Chengdu Railway, the planned Sichuan-Qinghai Railway, and the Sichuan-Tibet Railway, it will create an inter-regional mainline railway corridor that connects the northwest and southwest with the southern coastal areas of China. This will end the era of no railway service in the northwestern region of Sichuan.
成兰铁路（Chengdu-Lanzhou Railway）为中国中长期铁路网规划的重要组成部分，是一条连接四川省成都市和甘肃省兰州市的铁路。成兰铁路客运设计时速200km，总长度为573公里，客货共线，属于国铁Ⅰ级双线电气化快速铁路。2011年2月26日开工建设，建成后，成都至九寨沟仅需2小时，到兰州则减少至4小时，川西北也将结束无铁路的历史。 成兰铁路起自成都，经什邡、绵竹、茂县、松潘至九寨沟，向北延伸至在建兰渝铁路哈达铺站，线路全长463公里，其中四川、甘肃省境内分别为378和85公里 。成兰铁路起于成都，经茂县和松潘、九寨沟县后，抵甘肃哈达铺与兰渝铁路共线，最终到达兰州，是我国又一条在海拔3000米以上高原修建的”天路”，从海拔500米的成都平原上升至海拔3400米的青藏高原东缘。沿途经过10个县、市、区，新建车展16个，正线457.6公里。全线桥隧工程比例大，长大隧道多，工程地质具有”四极三高”的显著特点。成兰铁路向北连通兰渝铁路，与既有宝成铁路，规划的川青铁路、川藏线共同构建沟通西北与西南及华南沿海的区际干线铁路通道，将结束川西北地区没有铁路的历史 。
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