The Tunnel Page The longest road and rail tunnels in the world, grouped by categories such as sub-sea tunnels and immersed tubes.
A Span For All Seasons A collection of photographs of facilities and a large worldwide inventory of suspension bridges.
The Bridges Project Online database of significant bridges compiled by the Department of Civil Engineering at Rice University. Includes photographs.
International Peace Highway Project 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.
Bridgepix.com Contains photographs and scans of other media of subjects worldwide.
Bridge of the Month Quiz 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.
