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