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.
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.
The Tunnel Page The longest road and rail tunnels in the world, grouped by categories such as sub-sea tunnels and immersed tubes.
The World's longest Tunnel Page Elenco delle più lunghe gallerie stradali e ferroviarie nel mondo, suddivise in categorie. Offre anche una sezione dedicata a ponti e viadotti.
