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.
www.bridgeink.com Details

Bridgepix.com
Contains photographs and scans of other media of subjects worldwide.
www.bridgepix.com Details

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.
www.iijnet.or.jp Details

MrTunnel.com
Discusses many projects.
www.mrtunnel.com Details

The Bridges Project
Online database of significant bridges compiled by the Department of Civil Engineering at Rice University. Includes photographs.
bridges.civil.rice.edu Details

The Tunnel Page
The longest road and rail tunnels in the world, grouped by categories such as sub-sea tunnels and immersed tubes.
home.no.net Details