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With just 16km, this is not by any stretch going to be the world's second-longest tunnel, just the world's second-longest road tunnel. The longest tunnels are r
by nstom 9y ago
With just 16km, this is not by any stretch going to be the world's second-longest tunnel, just the world's second-longest road tunnel. The longest tunnels are rail tunnels, which measure up to 57km (Gotthard base tunnel), and if you count subway tunnels the longest is Guangzhou metro line 3 with 60km. (https://en.wikipedia.org/wiki/List_of_long_tunnels_by_type#Under_construction https://en.wikipedia.org/wiki/List_of_long_tunnels_by_type#U...)
- ttkari 9y agoThe page you linked also lists tunnels built for water distribution, the longest of which is the Delaware Aqueduct at 137 km.
- vermontdevil 9y agoAnd they are building a bypass of 2.5 miles but will take total of 8 years. All so they can fix major leaks in the current aqueduct. Fascinating project.
- maljx 9y agoThere's one tunnel in each direction, the video mentions the total tunnel distance as 50km.
- cup-of-tea 9y agoThe Channel Tunnel has three tunnels, which total ~150km then.
- isostatic 9y agoWith the middle one being a 50km road tunnel, albeit not publicly accessible.
- sctb 9y agoWe've updated the headline here to clarify. Thanks!
- germainelol 9y agoi remember every time i went on line 3 for several stops, i thought to myself "damn, this is a long tunnel"