[[wiki-architecture]] · [[Urban Planning and City Architecture]] · [[ARCHITECTURE]] · [[000]] # Twin bridges Twin bridges are a set of two bridges running parallel to each other. A pair of twin bridges is often referred to collectively as a twin-span or dual-span bridge. Twin bridges are independent structures and each bridge has its own superstructure, substructure, and foundation. Bridges of this type are often created by building a new bridge parallel to an existing one in order to increase the traffic capacity of the crossing. Twin-span bridges may or may not have been constructed at the same time, and may not be identical or even the same type of bridge. Many but not all twin bridges carry one-way pairs of traffic. For a bridge owner, twin bridges can improve the maintenance and management of the structures. For motorists, twin bridges can limit the risk that both directions of traffic will be disrupted by an accident. == List == == References == - [[Environmental Design/Climate Responsive Design]] - [[Professional Practice/Codes & Standards/National Building Code of India/Part 08 - Building Services]] - [[Interior Architecture/Interior Design]] - [[Professional Practice/Codes & Standards/National Building Code of India/Part 06 - Structural Design/Section 4 - Masonry]] - [[Professional Practice/Codes & Standards/National Building Code of India/Part 09 - Plumbing Services/Section 1 - Water Supply]] - [[Professional Practice/Codes & Standards/National Building Code of India/Part 03 - Development Control Rules]] - [[History and Theory/World History/Medieval Architecture]] - [[History and Theory/Temple Architecture/Stone Temples of India/pillars]] - [[Building Services]] - [[Professional Practice/Codes & Standards/Fire Safety Codes]]