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Topia!: Recreation: Roads and Highways: Bridges and Tunnels (79)
See Also:
The Bridges Project - Online database of significant bridges (with photos). The Tunnel Page - The longest road and rail tunnels in the world, grouped by categories such as sub-sea tunnels and immersed tubes. The West Point Bridge Designer - Free software. 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.
Additional categories:
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