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Websites
The longest road and rail tunnels in the world, grouped by categories such as sub-sea tunnels and immersed tubes.
site exerpt
The World's longest Tunnel Page, edited by Gunnar Lotsberg Get a free search engine for your site World tunnelling, long Norwegian fjord crossings, deepest immersed subsea tubes Welcome to the World's longest tunnel page Search for This Site The Web Norsk Road Tunnels Directory of the World's longest road...An image is posted inviting entrants to identify the feature. A free copy of a book on the subject is awarded to one correct entrant per month.
http://www.bridgeink.com/
Discusses many projects.
http://www.mrtunnel.com/
A collection of photographs of facilities and a large worldwide inventory of suspension bridges.
http://www.bridgemeister.com/
Online database of significant bridges compiled by the Department of Civil Engineering at Rice University. Includes photographs.
http://bridges.civil.rice.edu/
International Highway Construction Corporation, supporters of a highway system connecting most of the world which would include a Bering Strait bridge and Japan-South Korea tunnel.
http://www.iijnet.or.jp/IHCC/index.html
Contains photographs and scans of other media of subjects worldwide.
http://www.bridgepix.com/