We have selected BridgesDB as the world's very best website on Bridges.
The BridgesDB website contains two main sections: Database of Bridges and Bridge History and Facts.
The Database of Bridges contains articles on some of the most famous bridges in the world, including Tower Bridge in London and the Golden Gate Bridge in San Francisco.
The Bridge History and Facts section contains articles on the history of bridges, types of bridges, and famous bridge collapses. These range from the collapse of the Stirling Bridge in Scotland in 1297 (due to overloading by attackers during the battle of Stirling) to the collapse of the Tacoma Narrows Bridge in 1940. This was a suspension bridge which collapsed due to aerodynamic flutter which had not been anticipated in its design. All new suspension bridges are now subjected to tests in wind tunnels.
Click here for the BridgesDB website: http://www.bridgesdb.com