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216:, usually made of wood and enclosed as if a tunnel, were very popular in the 19th century in the US. Today, timber bridges are promoted as environmentally friendly, and as a way to protect water quality and the habitat along waterways. Timber bridges can be placed over small streams or channels with firm, stable banks.
175:, built a 'new' wooden bridge across the lake that was used until 1878 – measuring approximately 1,450 metres (4,760 ft) in length and 4 metres (13 ft) wide. On April 6, 2001, the reconstructed wooden footbridge was opened, being the longest wooden bridge in Switzerland. The
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can be built. Wood laminated by stress, glued, dowels, or nails lumber are good for panel bridges. New lumber and wood scavenged from buildings and railroad ties can be used to build stringer bridges. A licensed engineer can help operators design a safe, appropriate timber bridge.
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The
University of Minnesota Extension Service recommends three types of timber bridges for wilderness lands, and suggest that a licensed engineer be hired to insure the bridge design is safe and appropriate for the site. Using fallen trees,
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has concentrated on major highways and other primary roads; rural highways and local roads, where timber bridges are mostly found, have received less attention.
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Recently timber bridges have received attention in the United States because they are environmentally friendly compared to other bridge types. Until 1991, the
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emphasized timber bridges by passing the Timber Bridge
Initiative (TBI) in 1988 and the Intermodal Surface Transportation and Efficiency Act (ISTEA) in 1991.
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have described in detail how to build a stringer bridge using standard bridge design procedures, for example, by placing timber stringers across the
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The passing of TBI and ISTEA by the US Congress has provided an impetus to identify and develop standard designs for timber bridges, which the
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as its principal structural material. One of the first forms of bridge, those of timber have been used since ancient times.
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has done. The US Forest
Service has designed standardized plans for timber bridge superstructures made of treated lumber.
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in
Switzerland. It is the oldest wooden covered bridge in Europe, and one of Switzerland's main tourist attractions.
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Vehicular, Pedestrian, Covered, Golf Cart, Boardwalks: Timber Bridge
Gallery
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in
Switzerland; the prehistoric timber piles discovered to the west of the
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built a 6-metre-wide (20 ft) wooden bridge. Between 1358 and 1360,
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Trestles are useful as approaches to bridges over marshes and shallows
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Bridge that uses timber or wood as its principal structural material
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Local and state agencies prefer timber bridges because timber is a
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288:. Madison: Department of Agriculture, Forest Service. p. 53.
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date back to 1523 B.C. The first wooden footbridge led across
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301:"The Federal Highway Administration Timber Bridge Program"
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is a 204-metre-long (669 ft) bridge crossing the
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282:"Standard plans for timber bridge superstructures"
778:List of lists of covered bridges in North America
330:. University of Minnesota. 2002. Archived from
144:The most ancient form of timber bridge is the
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355:"Standard Plans for Timber Bridge Structures"
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280:Wacker, James P.; Smith, Matthew S. (2001).
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427:Video on building Chinese wooden bridges by
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260:. Their methods are quick and cost little.
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151:Among the oldest timber bridges is the
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299:Sheila Rimal Duwadi; Robert C. Wood.
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197:Federal Highway Administration
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703:Visual index to various types
526:Cantilever spar cable-stayed
360:. Forest Products Laboratory
353:James Wacher; Mathew Smith.
153:Holzbrücke Rapperswil-Hurden
138:Holzbrücke Rapperswil-Hurden
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286:Forest Products Laboratory
173:Rudolf IV, Duke of Austria
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814:Continuous truss bridges
787:Lists of bridges by size
724:Lists of bridges by type
380:"Timber Stringer Bridge"
422:Types of Timber Bridges
417:Timber Bridge Economics
773:List of bridge–tunnels
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541:Double-beam drawbridge
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766:vertical-lift bridges
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824:Masonry arch bridges
804:Cable-stayed bridges
413:at Wikimedia Commons
98:prestressed concrete
912:Bridges by material
751:multi-level bridges
94:reinforced concrete
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809:Cantilever bridges
799:Suspension bridges
741:cantilever bridges
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638:Navigable aqueduct
204:renewable resource
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855:Bridge to nowhere
756:road–rail bridges
473:-related articles
409:Media related to
334:on March 18, 2012
221:US Forest Service
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384:. Retrieved
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336:. Retrieved
332:the original
307:. Retrieved
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258:timber frame
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177:Kapellbrücke
169:Roman Empire
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621:Transporter
601:Submersible
586:Retractable
208:US Congress
191:Environment
165:Lake Zürich
157:Lake Zürich
37:Beam bridge
23:Beam bridge
906:Categories
660:Suspension
576:Drawbridge
546:Extradosed
521:Cantilever
506:Burr Truss
496:Box girder
264:References
248:, using a
146:log bridge
117:that uses
794:By length
633:Multi-way
386:April 24,
364:April 24,
338:April 24,
309:April 28,
889:Category
653:Vlotbrug
566:Moveable
246:abutment
227:Examples
78:Material
49:Material
864:Related
834:Tallest
829:Highest
697:Viaduct
692:Tubular
682:Trestle
648:Pontoon
591:Rolling
581:Folding
571:Bascule
531:Covered
254:trestle
185:Lucerne
161:Seedamm
129:History
61:Trestle
672:Timber
516:Canopy
471:Bridge
430:UNESCO
119:timber
115:bridge
82:Timber
687:Truss
665:types
611:Table
606:Swing
358:(PDF)
304:(PDF)
181:Reuss
113:is a
90:steel
643:Pile
616:Tilt
561:Moon
536:Crib
491:Beam
486:Arch
388:2012
366:2012
340:2012
311:2012
250:bent
123:wood
86:iron
53:Wood
35:The
556:Log
551:Jet
256:or
121:or
109:or
908::
319:^
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272:^
105:A
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463:e
456:t
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Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.
