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Topic: Truss bridge

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	Ozaukee County Wisconsin - Saukville's Steel Truss Bridge
		The bridge itself is steel truss construction and is the last such bridge in Ozaukee County that is open to traffic.
		The bridge that crossed the Milwaukee River on Bridge Street in Grafton was moved to Lime Kiln Park in that village, where it now crosses a small creek.
		The former interurban bridge that crosses Cedar Creek in Cedarburg was recently refurbished.
	www.co.ozaukee.wi.us /history/saukbridge.htm (215 words)

	Truss bridge - Wikipedia, the free encyclopedia
		A truss bridge is a bridge composed of connected elements (typically straight) which may be stressed from tension, compression, or sometimes both in response to dynamic loads.
		Bridges with the roadbed at the top or the bottom are the most common as this allows both the top and bottom to be stiffened, forming a box truss.
		Bridges based on the Bollman truss (patented in 1852) were used successfully by the Baltimore and Ohio Railroad.
	en.wikipedia.org /wiki/Truss_bridge (812 words)

	Frith Road Bridge Historic Steel Pratt Through Michigan Truss Bridge in St. Clair County over Pine River
		The Frith Road Bridge, crossing the Pine River in St. Clair County, is a historic metal truss bridge that does not meet the county's requirements for weight and traffic capacity, which is not too difficult for a historic bridge to do.
		Their is a bridge in the Calhoun County Bridge Part that is painted that sort of color, as well as the East Delhi Road Bridge.
		With the summer 2004 demolition of the Church Road Bridge in Sanilac County, and the collapse of the abandoned Ford Road Bridge in St. Clair County several years ago, the Frith Road Bridge is the last through truss bridge in the eastern thumb area.
	www.historicbridges.org /truss/frith (1370 words)

	trusstwo
		Each truss comprises a rather flat tubular arch and a suspension chain, linked by other members to form a rigid whole, with a suspended deck The idea is that the outward pull of the arch is balanced by the inward pull of the chains.
		The suspended trusses of the Forth railway bridge, made of steel, a much superior material, spanned 107 m, though in 1917 the Quebec bridge was completed, with a suspended truss of 195 m.
		A truss is made entirely of straight members that are in pure compression or tension, all singly pinned at the joints, and constructed in such a way that removal of one member would allow the structure to deform significantly.
	www.brantacan.co.uk /trusstwo.htm (5247 words)

	Truss Bridges - Tennessee Department of Transportation
		A truss is a series of individual members, acting in tension or compression and performing together as a unit.
		On truss bridges, a tension member is subject to forces that pull outward at its ends.
		Most truss types bear the name of the person(s) who developed the pattern, such as the Pratt truss that is named for Caleb and Thomas Pratt who patented it in 1844.
	www.tdot.state.tn.us /bridges/trussbridges.htm (660 words)

	The Bollman Truss
		The Baltimore and Ohio and the Bollman Truss
		The greatest objections to wooden bridges are lack of permanence due to deterioration of the wood, and susceptibility to fire.
		This design was used for the B&O bridge at Fairmount, Virginia that was later destroyed by the Rebels, and later for the impressive Ohio River Bridge at Louisville, Kentucky for the L&N and JM&I railways, constructed in 1874.
	www.du.edu /~jcalvert/tech/bolltrus.htm (3279 words)

	Truss Bridge
		The bridge and another Salt Fork bridge built in the eastern area of the county were built in 1939 as part of a federal works program.
		Truss bridges, which use a steel framework constructed above and over the roadway to help transfer load to bridge piers, are no long common on Texas highways.
		The bridge was identified as a Parker-through Truss.
	texashideout.tripod.com /bridge.html (3601 words)

	DR&G PONY TRUSS BRIDGE (Site not responding. Last check: 2007-10-11)
		Bridge is constructed of Cedar wood with Brass rods and tubes.
		This bridge is modeled after those designed and built by the Denver and Rio Grande It is compatible to bridges used by other narrow gauge rail roads like the Florence and Cripple Creek and the Colorado and Northwestern.
		It is possible to use the bridges in tandem by building a center pier of stone or wood cribbing filled with rock.
	www.gardenrr.com /ponytrussbridge.htm (156 words)

	Truss Design
		There was usually some truss arrangment to stiffen the deck and main arches, according to the prejudices of the designer, so it was usually uncertain just what parts of the bridge were effective and which were not.
		The idea then took hold of a bridge in which all the forces could be determined by the principles of statics, so they would not be altered by small inaccuracies of construction, or by changes in temperature or settlement of abutments.
		The weight of the bridge itself, the dead load, is distributed between the panel joints, and the weight applied to the deck of the bridge, the live load, is assumed to be applied to the panel joints as well.
	www.du.edu /~jcalvert/tech/machines/bridges.htm (2050 words)

	Howe Truss
		Although the engineering and construction of these truss bridges was probably not always the cause of their failure, there is no doubt that they were particularly vulnerable to floods, fire, and decay.
		The upper cross beams are supported by the trusses which transfer their load to the abutments at the ends of the trusses.
		The truss and the ends of the stringers simply rest on the beams which are attached to the abutments.
	www.trainweb.org /girr/tips/tips2/howe_truss.html (1364 words)

	New York State Covered Bridges - Truss Diagrams
		Trusses have been used in bridge building since the middle ages.
		Stringers span longitudinally, parallel to the trusses spanning the floorbeams.
		A king post truss is the simplest form of a truss bridge.
	www.coveredbridgesite.com /ny/truss.html (482 words)

	Bridge Types - Truss (Site not responding. Last check: 2007-10-11)
		The small size of individual parts of a truss make it the ideal bridge for places where large parts or sections cannot be shipped or where large cranes and heavy equipment cannot be used during erection.
		Because the truss is a hollow skeletal structure, the roadway may pass over (illustration #2) or even through (illustration #1) the structure allowing for clearance below the bridge often not possible with other bridge types.
		The Pratt truss (illustration #3) is identified by its diagonal members which, except for the very end ones, all slant down and in toward the center of the span.
	www.matsuo-bridge.co.jp /english/bridges/basics/truss.shtm (357 words)

	News Release - Fink Truss Bridge (Site not responding. Last check: 2007-10-11)
		The Fink Truss Bridge, also known as the Zoarville Station Bridge is the only known bridge in existence that uses the "through truss" design developed by German designer Albert Fink.
		The bridge was constructed in the late 1860's near Dover and was moved to its present location in 1905.
		The Fink Truss Bridge was constructed by Smith, Latrobe and Company on behalf of the Baltimore and Ohio (BandO) Railroad as part of an extensive all-metal bridge system.
	www.tuscazoar.org /PressRelease03.htm (438 words)

	Steel Truss Trail Bridge Specifications
		The Bridge Manufacturer shall be currently certified by the American Institute of Steel Construction to have the personnel, organization, experience, capability, and commitment to produce fabricated structural steel for Major Steel Bridges as set forth in the AISC Certification Program.
		Typical trail bridges are available up to 200 to 250 feet depending on deck type and width; costs begin to climb substantially for spans above these limits and should only be considered for landmark class bridges or when piers are essentially impossible; true arch and bowstring arch bridges are available at considerably longer spans.
		Multiple span bridges shall follow a smooth continuous profile after dead load deflection, and when a percentage camber is specified, the camber is computed as a percentage of the total bridge length and applied at the midpoint of the entire bridge.
	www.wheeler-con.com /1wheelerPages/sttbspec.html (5142 words)

	Truss
		A truss is a type of framework, usually comprising straight struts and ties, which is designed to be stiff, even if all the joints are considered to be pinned.
		An impressively massive wooden truss can be seen in the Zygmunt tower of the cathedral of Krakow, where it provides stiffness against the swing of the huge bells.
		Please note that these are not trusses, as they are not based on triangles, and they obtain some stiffness in the plane of the wing by means of the thin membrane, like the stressed skin of many aircraft.
	www.brantacan.co.uk /truss.htm (1421 words)

	Wooden Truss Bridges - Tennessee Department of Transportation
		However, in the 19th and early 20th centuries, virtually all covered bridges were wooden truss bridges.
		Virtually all of Tennessee's railroad-built wooden truss bridges that survived into the 1980s utilized either the Queenpost or Kingpost design and had construction dates ranging from the 1910s into the 1940s.
		Although no uncovered vehicular wooden truss bridges built by someone other than the railroads are known to remain in Tennessee, the counties built many such bridges.
	www.tdot.state.tn.us /bridges/woodentrusses.htm (287 words)

	Simple Truss
		Truss bridges consist of stick members that criss-cross in a regular pattern.
		The through truss and the pony truss differ by supporting the tracks at the sides of the truss.
		The truss spans approximately 130 feet across the river.
	www.ghostdepot.com /rg/bridges/stl_trus/stl_trus.htm (208 words)

	Ashtabula County Ohio Covered Bridge Festival (Site not responding. Last check: 2007-10-11)
		This first Pratt truss bridge in Ohio was built in 1986 in honor of Ashtabula County's 175th Anniversary.
		The Graham Road Bridge, which was built from remnants of a bridge washed downstream in the 1913 flood, now sits in a small park on the south side of the road.
		Pratt truss construction was used for this 107-foot bridge built in 1995 with funding from an ODOT Timber Grant.
	www.coveredbridgefestival.org /bridges.htm (963 words)

	Historic Truss Bridge - MyFolsom.Com
		This bridge was originally built across the American River in 1893 replacing the Ecklon Toll Bridge, a suspension bridge that had collapsed the year before.
		The bridge remained in place until the State of California bought it for $250 and moved it to Siskiyou County as a crossing on the Klamath River.
		From 1930 until the late 1990's it was known as Walker Bridge, as it spanned the Klamath on Walker Road.
	www.myfolsom.com /trussbridge.shtml (300 words)

	Grace Memorial Steel Truss Bridge
		A parallel bridge, with a similar design but a shorter main span, was built in 1966.
		They want to give the new bridge, as Riley put it: "The Charleston treatment." State transportation engineers balked, saying the department is proceeding with a bridge design that it believes to be the least costly and is preferred by the public.
		In the state's plan, the Grace Bridge would be knocked down and the Pearman would be used for northbound traffic until there is enough money to build a second new bridge.
	bridgepros.com /projects/GraceMemorial/GraceMemorial.htm (1666 words)

	Atlas Through Truss Bridge Kit
		Inspired by a prototype Northumberland, Pennsylvania, this NEW 18" Through Truss Bridge is the first truly American 18" bridge offered by Atlas.
		With two different colors to choose from for both Code 83 and Code 100 layouts, this bridge is perfect for any modeler.
		This bridge works wonderfully with Atlas HO Bridge Piers (Item# 81).
	www.atlasrr.com /Trackmisc/hothroughtrussbridge.htm (129 words)

	Bridges: Foxburg PA 16036 - Historic Steel Warren Truss Bridge Over Allegheny River Between Armstrong County and ...
		The bridge ceased being a railroad bridge in 1964 at which time the railroad approach spans and tracks were removed.
		You could visit the Foxburg Bridge, of course, as well as the Emlenton I-80 Bridge a little to the north, the Clarion River Bridge a little to the south, and the Parker Bridge a little more to the south.
		Since the Foxburg Bridge had been previously determined to be eligible for the National Register of Historic Places, the Historic Bridge Survey crew didn't elaborate in its description.
	www.venangoil.com /bridgesfoxburg.html (1681 words)

	Truss arch bridge - Wikipedia, the free encyclopedia
		A truss arch bridge combines elements of a truss and an arch.
		Such a wood structure uses closely fitted beams pinned together, so the members within the frames are not free to move relative to one another, as they are in a pin-jointed truss structure that allows rotation at the pin joint.
		Navajo Bridge An older (1929) and newer (1995) bridge of the same general construction, each built as unsupported cantilevers joined with a central pin.
	en.wikipedia.org /wiki/Truss_arch_bridge (300 words)

	Truss Bridges (Site not responding. Last check: 2007-10-11)
		A type of Beam Bridge is the truss, which is lightweight but strong because of the open, diagonal (or triangular) beams along the sides.
		Generally, the deck of a truss bridge goes straight across the river, without support in the middle.
		A truss bridge that carries train traffic across a large stream.
	www.rockport.k12.ma.us /rms/oconnorbridges/truss.html (109 words)

	[No title]
		Trusses are composed of straight members connected at their ends by hinged connections to form a stable configuration.
		When loads are applied to a truss only at the joints, forces are transmitted only in the direction of each of its members.
		Trusses have a high strength to weight ratio and consequently are used in many structures, from bridges, to roof supports, to space stations.
	www.jhu.edu /~virtlab/bridge/truss.htm (319 words)

	Covered Bridge's Truss Types (Site not responding. Last check: 2007-10-11)
		The kingpost that forms the basis for this truss is found in the center two panels.
		A three panel truss used for short spans, the queenpost was devised as an extension of the basic kingpost by placing a horizontal member in the center panel.
		Connecticut architect Ithiel Town received a patent for a truss of crisscrossed diagonals, or lattice, in 1820.
	www.dot.state.oh.us /se/coveredbridges/truss_types.htm (262 words)

	TEXBRICK: Arched Through Truss Bridge
		I did not model the bridge after any specific structure, but I did draw inspiration from the Sydney Harbor Bridge in Australia and the Hell Gate Bridge in New York.
		I connected the main trusses (the two main parallel trusses making the arch shape) with simple 2x plates, then I tied string tightly in an X pattern to connect the two.
		At the ends of the bridge, the roadway was directly connected to the members of the truss (with axles or friction pegs).
	www.texbrick.com /creations/bridge_arch (822 words)

	[No title]
		Bridges are designed to get people and their belongings across rivers, valleys, and so forth, and must withstand the forces (people, weight, wind, gravity) acting upon them.
		When you finish construction of the bottom section of the bridge, leave it attached to the cardboard and begin construction on the second side section, as explained in the next step, using the same techniques as before.
		After the four sections of your bridge are completed and the glue has dried, carefully remove the pins that are securing any remaining bridge sections attached to the cardboard.
	www.hearlihy.com /activities/item.aspx?CategoryID=9&act=173 (916 words)

	Cantilever Truss Bridge Projects (Site not responding. Last check: 2007-10-11)
		Completed in 1929, the cantilever steel structure has a main span of 1050 ft., or 320 m.
		Due to the tragic collapse of the Tay Bridge, The Firth of Forth bridge, completed in 1890, was heavily over-constructed in an attempt to regain the public's confidence.
		Still the Forth Bridge was a daring design.
	bridgepros.com /projects/CantileverTrussBridges.htm (136 words)

	OHS - Ohio Historic Preservation Office - Awards - Westerville Truss Bridge over Alum Creek: Westerville, Ohio (Site not responding. Last check: 2007-10-11)
		To preserve the bridge, it was relocated to the Westerville Bikeway spanning Alum Creek.
		The bridge was kept in its original condition through rigorous engineering and reconstruction efforts.
		Because the Westerville Truss Bridge is one of the few (and best-preserved) examples of a 19th century double-intersection Pratt bridge still standing in central Ohio, engineers carefully relocated the structure in accordance with standards set forth by the Historic American Engineering Record.
	www.ohiohistory.org /resource/histpres/programs/westervilletruss.html (283 words)

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