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Bridge of the Month Quiz - http://www.hevanet.com/bridgink/
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. |
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A Span For All Seasons - http://www.bridgemeister.com
A collection of photographs of facilities and a large worldwide inventory of suspension bridges. |
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Bridgepix.com - http://www.bridgepix.com/
Contains photographs and scans of other media of subjects worldwide. |
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MrTunnel.com - http://www.mrtunnel.com/
Discusses many projects. |
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The Tunnel Page - http://www.lotsberg.net/
The longest road and rail tunnels in the world, grouped by categories such as sub-sea tunnels and immersed tubes. |