Re: Dumbarton Rail Bridge(s)
Author: Clem
Date: 07-15-2017 - 12:47

A twin-bore tunnel would be better and possibly cheaper. The geology and soil conditions are extremely well known from the 5-mile, 14-foot diameter water tunnel bored under Dumbarton a few years ago for $288M. The oft-repeated notion that these days you can't build through a national wildlife refuge doesn't fly.



Subject Written By Date/Time (PST)
  Dumbarton Rail Bridge(s) Jeffcon1 07-14-2017 - 20:18
  Re: Dumbarton Rail Bridge(s) WebDigger 07-15-2017 - 02:27
  Re: Dumbarton Rail Bridge(s) ron 07-15-2017 - 06:56
  Re: Dumbarton Rail Bridge(s) Clem 07-15-2017 - 12:47
  Re: Dumbarton Rail Bridge(s) Berkeley Watcher 07-15-2017 - 14:31
  Re: Dumbarton Rail Bridge(s) HUTCH 7.62 07-15-2017 - 15:34
  Re: Dumbarton Rail Bridge(s) Skip391 07-15-2017 - 17:31
  Re: Dumbarton Rail Bridge(s) Railbaron 07-16-2017 - 07:31
  Re: Dumbarton Rail Bridge(s) Nudge 07-16-2017 - 08:00
  Re: Dumbarton Rail Bridge(s) Railbaron 07-16-2017 - 08:18
  Re: Dumbarton Rail Bridge(s) OPRRMS 07-16-2017 - 10:19
  Re: Dumbarton Rail Bridge(s) DQ 07-16-2017 - 10:31
  Re: Dumbarton Rail Bridge(s) Railbaron 07-16-2017 - 11:22
  Re: Dumbarton Rail Bridge(s) NFO 07-16-2017 - 14:53
  Re: Dumbarton Rail Bridge(s) Ed Immel 07-17-2017 - 06:51
  Re: Dumbarton Rail Bridge(s) HUTCH 7.62 07-16-2017 - 16:43
  Re: Dumbarton Rail Bridge(s) HUTCH 7.62 07-16-2017 - 18:18
  Re: Dumbarton Rail Bridge(s) HUTCH 7.62 07-16-2017 - 18:23
  Re: Dumbarton Rail Bridge(s) cprr 07-18-2017 - 12:03
  Re: Dumbarton Rail Bridge(s) Les 07-23-2017 - 21:40


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