Talk:Spiral bridge
Latest comment: 4 years ago by 73.25.209.220 in topic Other bridges missing in list
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Should we link to Nanpu bridge (in Shanghai), which provides an example of this on a larger scale? google maps
I rather doubt the "invention" of the pigtail bridge in the 1930s in the US stands up to closer scrutiny: Swiss railroad tunnels famously use the same principle to change elevation, and some of the lines are older than the 1930s.
82.113.106.153 (talk) 12:22, 18 September 2009 (UTC)
- In particular, the Brusio spiral viaduct was completed in 1908. 92.117.72.99 (talk) 16:34, 24 October 2010 (UTC)
Other bridges missing in list edit
82.150.248.28 (talk) 15:42, 16 February 2015 (UTC)
- Yellowstone Insider Article Sylvan Pass Corkscrew Bridge built 1904 in Yellowstone National Park — Preceding unsigned comment added by 73.25.209.220 (talk) 22:12, 30 August 2019 (UTC)