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by John
Francis O'Rourke and Pomeroy P. Dickinson (1889) were all important early uses of the cantilever design. The Kentucky River Bridge spanned a gorge that was 275 feet (84 metres) deep and took full advantage of the fact that falsework, or temporary support, is not needed for the main span of a
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in the 19th century understood that a bridge that was continuous across multiple supports would distribute the loads among them. This would result in lower stresses in the girder or truss and meant that longer spans could be built. Several 19th-century engineers patented continuous bridges with
462:) are built using pure cantilever spans from each side, with neither falsework below nor temporary supporting towers and cables above. These are then joined with a pin, usually after forcing the union point apart, and when jacks are removed and the bridge decking is added the bridge becomes a
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of the lower ones. Commonly, the structure distributes the tension via the anchor arms to the outermost supports, while the compression is carried to the foundations beneath the central towers. Many truss cantilever bridges use pinned joints and are therefore
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The steel truss cantilever bridge was a major engineering breakthrough when first put into practice, as it can span distances of over 1,500 feet (450 m), and can be more easily constructed at difficult crossings by virtue of using little or no
466:. Such unsupported construction is only possible where appropriate rock is available to support the tension in the upper chord of the span during construction, usually limiting this method to the spanning of narrow canyons.
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A common way to construct steel truss and prestressed concrete cantilever spans is to counterbalance each cantilever arm with another cantilever arm projecting the opposite direction, forming a
477:, pictured in August 2014, is deconstructed in an order nearly reverse that of its construction. Similar temporary supports were used under each anchor arm during the bridge's construction.
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system and of a bridge that could handle differential settlement of the foundations. Engineers could more easily calculate the forces and stresses with a hinge in the girder.
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which rests on the ends of the cantilever arms. The suspended span may be built off-site and lifted into place, or constructed in place using special travelling supports.
367:, in between them, using just their arms and wooden poles. The suspended span, where Watanabe sits, is in the center. The wooden poles resist the compression of the lower
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A simple cantilever span is formed by two cantilever arms extending from opposite sides of an obstacle to be crossed, meeting at the center. In a common variant, the
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is a notable example of an early cantilever bridge. This bridge held the record for longest span in the world for twenty-nine years until it was surpassed by the
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Cantilever Bridge.—A structure at least one portion of which acts as an anchorage for sustaining another portion which extends beyond the supporting pier.
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river in
Germany with a central span of 124 feet (38 metres) was completed in 1867 and is recognized as the first modern cantilever bridge.
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was one of the engineers to obtain a patent for a hinged girder (1866) and is recognized as the first to build one. The
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is a balanced cantilever made of concrete, shown here under construction.
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Prestressed concrete balanced cantilever bridges are often built using
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The structural principles of the suspended span cantilever bridge
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is a concrete bridge built using the balanced cantilever method.
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1129:. American Institute of Steel Construction, Inc. Archived from
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1068:. International Council on Monuments and Sites. Archived from
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National Steel Bridge
Alliance: World's Longest Bridge Spans
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Transactions of the
Canadian Society of Civil Engineers
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World's longest cantilever bridges (by longest span):
1554:List of lists of covered bridges in North America
1099:. New York: John Wiley & Sons, Inc. pp.
427:is an example of this type of cantilever bridge.
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856:is of the general structure described above.
355:. The engineers responsible for the bridge,
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430:Steel truss cantilevers support loads by
80:Learn how and when to remove this message
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1030:. Canadian Society of Civil Engineers
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1062:"Context for World Heritage Bridges"
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1162:The Wolfram Demonstrations Project
921:with its three double cantilevers.
488:List of longest cantilever bridges
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1522:medieval stone bridges in Germany
1174:monthly, February 1919, page 79,
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993:. New York: John Wiley & Sons
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1194:The New Student's Reference Work
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886:San Francisco–Oakland Bay Bridge
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475:San Francisco–Oakland Bay Bridge
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569:1,710 ft (521 m) Ă— 2
1120:Durkee, Jackson (1999-05-24).
408:A diagram of the parts of the
27:Bridge built using cantilevers
13:
1:
1479:Visual index to various types
1096:Bridge Engineering - Volume 2
987:DuBois, Augustus Jay (1902).
970:
410:John P. Grace Memorial Bridge
1302:Cantilever spar cable-stayed
990:The Mechanics of Engineering
473:The old eastern span of the
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884:Former eastern span of the
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832:1,200 ft (366 m)
804:1,212 ft (369 m)
776:1,235 ft (376 m)
752:1,247 ft (380 m)
724:1,443 ft (440 m)
700:1,460 ft (445 m)
676:1,500 ft (457 m)
646:1,575 ft (480 m)
621:1,644 ft (501 m)
595:1,673 ft (510 m)
543:1,800 ft (549 m)
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60:the claims made and adding
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1691:Bridges by structural type
1187:"Bridge, Cantilever"
933:Original 1938 span of the
738:Campbellton, New Brunswick
492:List of cantilever bridges
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386:John Alexander Low Waddell
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333:Niagara Cantilever Bridge
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1590:Continuous truss bridges
1563:Lists of bridges by size
1500:Lists of bridges by type
630:Crescent City Connection
337:Charles Conrad Schneider
761:Horace Wilkinson Bridge
325:High Bridge of Kentucky
1549:List of bridge–tunnels
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1317:Double-beam drawbridge
813:Lewis and Clark Bridge
766:Baton Rouge, Louisiana
733:J. C. Van Horne Bridge
636:New Orleans, Louisiana
604:Commodore Barry Bridge
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448:segmental construction
441:statically determinate
425:Commodore Barry Bridge
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106:Pierre Pflimlin Bridge
1542:vertical-lift bridges
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790:South Nyack, New York
609:Chester, Pennsylvania
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1600:Masonry arch bridges
1580:Cable-stayed bridges
1066:World Heritage Sites
965:, a concrete bridge.
818:Longview, Washington
454:Construction methods
388:, Bridge Engineering
260:prestressed concrete
192:prestressed concrete
1527:multi-level bridges
1158:"Cantilever Bridge"
1014:Bender, C. (1890).
794:Tarrytown, New York
690:Gramercy, Louisiana
417:balanced cantilever
344:cantilever bridge.
341:Poughkeepsie Bridge
220:Very little to none
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1686:Cantilever bridges
1585:Cantilever bridges
1575:Suspension bridges
1517:cantilever bridges
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1414:Navigable aqueduct
1018:Cantilever Bridges
870:Vejle Fjord Bridge
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357:Sir Benjamin Baker
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1631:Bridge to nowhere
1532:road–rail bridges
1249:-related articles
1160:by Sándor Kabai,
1091:Waddell, J. A. L.
935:Blue Water Bridge
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785:Tappan Zee Bridge
709:Tokyo Gate Bridge
464:truss arch bridge
228:cantilever bridge
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257:
253:
249:
245:
241:
238:). For small
237:
233:
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212:
208:
206:Design effort
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200:
196:
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185:
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107:
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96:
84:
81:
73:
63:
59:
55:
49:
48:
43:This article
41:
32:
31:
19:
1595:Arch bridges
1537:toll bridges
1477:
1453:Through arch
1296:
1287:Cable-stayed
1193:
1180:Google Books
1167:
1138:. Retrieved
1131:the original
1122:
1115:
1104:. Retrieved
1095:
1085:
1074:. Retrieved
1070:the original
1065:
1058:DeLony, Eric
1032:. Retrieved
1027:
1023:
1017:
995:. Retrieved
989:
919:Forth Bridge
632:(dual spans)
552:Forth Bridge
495:
457:
445:
429:
420:
416:
414:
399:truss bridge
394:
392:
379:
349:Forth Bridge
346:
331:(1877), the
322:
300:
285:
264:
227:
225:
140:Swing bridge
122:truss bridge
76:
67:
44:
1397:Transporter
1377:Submersible
1362:Retractable
664:West Bengal
436:compression
421:anchor arms
258:built from
256:box girders
250:built from
240:footbridges
236:cantilevers
154:automobiles
150:Pedestrians
118:Beam bridge
70:August 2022
1680:Categories
1436:Suspension
1352:Drawbridge
1322:Extradosed
1297:Cantilever
1282:Burr Truss
1272:Box girder
1140:2007-11-03
1106:2008-08-19
1076:2008-08-10
1034:2008-08-10
997:2008-08-10
971:References
172:Span range
166:heavy rail
162:light rail
136:Descendant
54:improve it
1570:By length
1409:Multi-way
308:over the
287:Engineers
268:falsework
215:Falsework
58:verifying
1665:Category
1429:Vlotbrug
1342:Moveable
1093:(1916).
1060:(1996).
839:Examples
562:Scotland
508:Location
383:—
375:Function
217:required
180:Material
114:Ancestor
1640:Related
1610:Tallest
1605:Highest
1473:Viaduct
1468:Tubular
1458:Trestle
1424:Pontoon
1367:Rolling
1357:Folding
1347:Bascule
1307:Covered
1199:. 1914.
1176:Scanned
1164:, 2007.
904:Kolkata
660:Kolkata
517:Length
511:Country
432:tension
274:Origins
248:trusses
198:Movable
146:Carries
128:Related
52:Please
1448:Timber
1292:Canopy
1247:Bridge
1196:
820:&
792:&
746:Canada
740:&
536:Canada
531:Quebec
505:Bridge
232:bridge
209:Medium
175:Medium
158:trucks
1463:Truss
1441:types
1387:Table
1382:Swing
1134:(PDF)
1127:(PDF)
718:Japan
714:Tokyo
669:India
588:Japan
583:Osaka
369:chord
292:hinge
254:, or
244:beams
230:is a
1419:Pile
1392:Tilt
1337:Moon
1312:Crib
1267:Beam
1262:Arch
1101:1917
917:The
868:The
852:The
829:1930
801:1955
773:1968
749:1961
721:2012
697:1995
673:1943
618:1974
592:1973
566:1890
540:1919
514:Date
490:and
359:and
347:The
323:The
310:Main
184:Iron
131:None
104:The
1332:Log
1327:Jet
1178:by
335:by
327:by
262:.
56:by
1682::
1190:.
1170:,
1064:.
1043:^
1026:.
1022:.
1006:^
979:^
902:,
809:12
781:11
757:10
662:,
502:No
450:.
270:.
226:A
201:No
190:,
186:,
164:,
160:,
156:,
152:,
120:,
1239:e
1232:t
1225:v
1143:.
1109:.
1079:.
1037:.
1028:3
1000:.
729:9
705:8
681:7
651:6
626:5
600:4
574:3
548:2
522:1
83:)
77:(
72:)
68:(
50:.
20:)
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