In the mathematical field of knot theory, the bridge number is an invariant of a knot defined as the minimal number of bridges required in all the possible bridge representations of a knot.
Crib bridges were made from horizontally placed logs. The logs were laid first lengthwise, and then crosswise, in several layers. This consumed more trees than building trestle bridges, but they...
A folding bridge is a type of moveable bridge. An example of a folding bridge is the Hörnbrücke in the city of Kiel in the German state of Schleswig-Holstein. It...
A table bridge is a moveable bridge in which the deck moves along the vertical axis. Four hydraulic pillars under the bridge, two at each end, raise the bridge deck...
A multi-way bridge is a bridge with three or more distinct and separate spans, where one end of each span meets at a common point near the centre of the...
A stressed ribbon bridge is a tension structure. The suspension cables are embedded in the deck, which follows a catenary arc between supports. Unlike the simple span, the ribbon is...
A self-anchored suspension bridge is a suspension bridge type in which the main cables attach to the ends of the deck, rather than directly to the ground or via large...
Devil's Bridge is a term applied to dozens of ancient bridges, found primarily in Europe. Most of these bridges are stone or masonry arch bridges and represent a significant technological...
A hinged arch bridge is one with hinges incorporated into its structure to allow movement. The most common varieties are the two-hinged bridge with hinges at the springing points and...
