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China completed 13 tunnels total 55km for Chengdu – Kunming railway.
China Railway (CR) completed 13 new tunnels total 55km and 18 new bridges total 5.56km Chengdu – Kunming railway.
https://www.railjournal.com/passenger/main-line/china-completes-challenging-track-doubling-project/
Also a 14.5-km tunnel on the Kunming-Vientiane Railway to link China with Laos has been bored through, the China State Railway Group Co., Ltd. (China Railway) said.
cover tunnel photo by: Matt Brown from London, England / CC BY
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https://www.railjournal.com/passenger/main-line/china-completes-challenging-track-doubling-project/
China completes challenging track-doubling project - International Railway Journal
www.railjournal.comCHINA National Railway (CR) has completed a technically challenging project to rebuild a 68km section of the Chengdu - Kunming railway.