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213:, and may or may not have the raising chains characteristic of a drawbridge. The inner end carried counterweights enabling it to sink into a pit in the gate-passage, and when horizontal the bridge would often be supported by stout pegs inserted through the side walls. This was a clumsy arrangement, and many turning bridges were replaced with more advanced drawbridges.
237:
Drawbridges have appeared in films as part of castle sets. When the drawbridge needs to be functional this may present engineering challenges since the set may not be able to support the weight of the bridge in the conventional manner. One solution is to build the drawbridge from steel and concrete
31:
177:
was provided by lifting arms (called "gaffs") above and parallel to the bridge deck whose ends were linked by chains to the lifting end of the bridge. In the raised position the gaffs would fit into slots in the gatehouse wall ("rainures") which can often still be seen, as at
165:
arrangement is normally found. The bridge may extend into the gate-passage beyond the pivot point, either over a pit into which the internal portion can swing (providing a further obstacle to attack), or in the form of counterweighted beams that drop into slots in the floor.
182:. Inside the castle the gaffs were extended to bear counterweights, or might form the side-timbers of a stout gate which would be against the roof of the gate-passage when the drawbridge was down, but would close against the gate-arch as the bridge was raised.
126:, crossed by a wooden bridge. In early castles the bridge might be designed to be destroyed or removed in the event of an attack, but drawbridges became very common. A typical arrangement would have the drawbridge immediately outside a
138:
or pivoting at the gatehouse threshold, so that in the raised position the bridge would be flush against the gate, forming an additional barrier to entry. It would be backed by one or more
1857:
81:
As used in castles or defensive structures, drawbridges provide access across defensive structures when lowered, but can quickly be raised from within to deny entry to an enemy force.
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in a chamber in the gatehouse above the gate-passage. Only a very light bridge could be raised in this way without any form of counterweight, so some form of
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19:
This article is about a type of bridge commonly found at the entrance to castles. For the broader
American meaning of the term, see
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2500:
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78:, but this article concerns the narrower historical definition of the term where the bridge is used in a defensive structure.
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The raising chains could themselves be attached to counterweights. In some cases, a portcullis provides the weight, as at
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The bridge would be raised or lowered using ropes or chains attached to a
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347:"The moat was crossed by means of a wooden hinged at its inner edge."
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and gates. Access to the bridge could be resisted with missiles from
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before hiding the structural materials behind wood and plaster.
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193:. In England, two working drawbridges remain in regular use at
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The
Standard Reference Work for the Home, School and Library
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commonly refers to all types of moveable bridges, such as
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Château du
Plessis-Bourré: video of working drawbridge
185:
In France, working drawbridges survive at a number of
2817:List of lists of covered bridges in North America
2940:
197:, which dates from the early sixteenth century.
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344:The entire surrounded by a deep moat or ditch.
93:Drawbridge at the fort of Ponta da Bandeira in
34:Animation showing the operation of a drawbridge
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334:. Vol. II. Standard Education Society
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221:Drawbridges were also used on forts with
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276:for a list of other movable bridge types
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88:
29:
506:Davenport, Delbert E (September 1922).
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58:. In some forms of English, including
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552:
466:
321:Stanford, Harold Melvin, ed. (1921).
84:
122:were usually defended by a ditch or
1963:Weapons Storage and Security System
448:. Royal Armouries. 19 February 2018
296:"Drawbridge definition and meaning"
13:
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578:
532:10.1038/scientificamerican0922-176
14:
2965:
2785:medieval stone bridges in Germany
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200:
2923:
2922:
2462:
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423:, Kaye & Ward, London, 1979
360:, Kaye & Ward, London, 1979
320:
50:typically at the entrance to a
508:"Castles of Plaster and Steel"
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413:
389:
371:
350:
314:
288:
1:
2742:Visual index to various types
1858:British "hedgehog" road block
467:Moore, David (October 1992).
281:
2565:Cantilever spar cable-stayed
205:A bridge pivoted on central
7:
2268:Cities with defensive walls
1853:Defensive fighting position
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1383:
1329:
1190:
1181:
1147:
1138:
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421:The Castle Explorer's Guide
358:The Castle Explorer's Guide
241:
25:Drawbridge (disambiguation)
10:
2970:
469:"Guthrie's Rolling Bridge"
302:. HarperCollins Publishers
225:using them in the form of
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1873:Entry control point (ECP)
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232:
191:Château du Plessis-Bourré
130:, consisting of a wooden
54:or tower surrounded by a
2853:Continuous truss bridges
2826:Lists of bridges by size
2763:Lists of bridges by type
2395:Continuity of government
216:
173:. By the 14th century a
2217:Motte-and-bailey castle
1923:Missile launch facility
1918:Main line of resistance
613:
401:Helmingham Hall Gardens
227:Guthrie rolling bridges
16:Type of moveable bridge
2812:List of bridge–tunnels
2756:
2580:Double-beam drawbridge
2293:Military installations
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254:Double-beam drawbridge
113:
106:double-beam drawbridge
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35:
23:. For other uses, see
2805:vertical-lift bridges
2755:
2062:Floating water castle
1793:Admiralty scaffolding
1086:Fortified buildings (
300:CollinsDictionary.com
103:
92:
72:vertical-lift bridges
33:
2863:Masonry arch bridges
2843:Cable-stayed bridges
2405:Subterranean warfare
1358:Viking ring fortress
397:"The Hall | History"
259:Drawbridge mentality
108:, the Poortbrug, in
2949:Castle architecture
2790:multi-level bridges
2222:Quadrangular castle
1958:Weapon storage area
1314:Quadrangular castle
524:1922SciAm.127..176D
512:Scientific American
180:Herstmonceux Castle
175:bascule arrangement
2848:Cantilever bridges
2838:Suspension bridges
2780:cantilever bridges
2757:
2677:Navigable aqueduct
1953:Underground hangar
1738:Fire control tower
1535:Gunpowder magazine
963:Butter-churn tower
446:royalarmouries.org
442:"Palmerston Forts"
419:Bottomley, Frank,
383:2012-03-26 at the
356:Bottomley, Frank,
114:
98:
85:Castle drawbridges
36:
2936:
2935:
2894:Bridge to nowhere
2795:road–rail bridges
2512:-related articles
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2475:
2400:Military urbanism
2334:Fortified gateway
2207:Concentric castle
1971:
1970:
1888:Fire support base
1728:Coastal artillery
1603:(Spanish America)
1197:
1039:Concentric castle
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2954:Moveable bridges
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2882:Additional lists
2518:Structural types
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2349:National redoubt
2278:Fortified estate
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1798:Air raid shelter
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60:American English
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2775:bascule bridges
2770:List of bridges
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1998:Hillside castle
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1828:Border security
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829:Vitrified fort
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580:Fortifications
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368:pp 51–52
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332:(Google books)
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249:Bascule bridge
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211:turning bridge
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144:machicolations
134:with one edge
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2258:Bastion forts
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2242:Z-plan castle
2240:
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2212:L-plan castle
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2197:Bridge castle
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2166:Refuge castle
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2147:Military base
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2023:Moated castle
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2008:Island castle
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1994:
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1976:By topography
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1948:Submarine pen
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1215:L-plan castle
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948:Bridge castle
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847:Advanced work
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771:Refuge castle
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429:0-7182-1216-9
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112:, Netherlands
111:
107:
102:
96:
91:
82:
79:
77:
76:swing bridges
73:
69:
65:
61:
57:
53:
49:
46:is a type of
45:
41:
32:
26:
22:
2858:Arch bridges
2800:toll bridges
2740:
2716:Through arch
2614:
2550:Cable-stayed
2460:
2415:Siege engine
2383:Other topics
2307:Related word
2273:Defense line
2237:Tower castle
2192:Bastion fort
2176:Urban castle
2104:Ganerbenburg
2102:
2057:Water castle
2033:Ridge castle
2018:Marsh castle
1833:Bomb shelter
1813:Belgian gate
1786:20th century
1697:19th century
1635:Retrenchment
1607:Punji sticks
1516:Entrenchment
1511:Device Forts
1478:Counterguard
1413:Early modern
1343:Tower castle
1279:Powder tower
1254:Outer bailey
1166:Inner bailey
1140:Gulyay-gorod
1108:Ganerbenburg
1106:
1102:Fujian tulou
1058:
1044:Corner tower
983:Chamber gate
953:Bridge tower
801:Trou de loup
535:. Retrieved
515:
511:
484:. Retrieved
479:
475:
462:
450:. Retrieved
445:
436:
420:
415:
404:. Retrieved
400:
391:
373:
357:
352:
343:
338:November 21,
336:. Retrieved
327:
316:
304:. Retrieved
299:
290:
236:
220:
210:
209:is called a
204:
184:
168:
156:
150:in flanking
140:portcullises
115:
80:
63:
43:
39:
37:
2660:Transporter
2640:Submersible
2625:Retractable
2314:Castle town
2171:Toll castle
2140:Lustschloss
2122:Kaiserpfalz
2052:Spur castle
2047:Rock castle
1988:Hill castle
1983:Cave castle
1943:Spider hole
1843:Bremer wall
1808:Barbed tape
1704:Barbed wire
1378:Witch tower
1348:Tower house
1338:Toll castle
1324:Shield wall
1244:Murder hole
1133:Guard tower
750:Pincer gate
697:Faussebraye
148:arrow slits
62:, the word
44:draw-bridge
2943:Categories
2699:Suspension
2615:Drawbridge
2585:Extradosed
2560:Cantilever
2545:Burr Truss
2535:Box girder
2339:Gatekeeper
2159:Ordensburg
2131:Landesburg
1938:Sentry gun
1893:Flak tower
1823:Blast wall
1743:Gun turret
1640:Sally port
1545:Kotta mara
1485:Couvreface
1449:Breastwork
1444:Blockhouse
1422:Abwurfdach
1373:Watchtower
1363:Wall tower
1319:Shell keep
1269:Portcullis
1264:Peel tower
1249:Neck ditch
1208:Landesburg
1156:Half tower
1114:Gate tower
1059:Drawbridge
901:Battlement
817:Wagon fort
660:Chengqiang
406:2022-03-06
282:References
264:Portcullis
110:Leeuwarden
64:drawbridge
40:drawbridge
2833:By length
2672:Multi-way
2442:Guerrilla
2185:By design
1933:Revetment
1748:Land mine
1679:Star fort
1506:Crownwork
1501:Covertway
1434:Barricade
1075:Embrasure
988:Chartaque
918:Bergfried
876:Arrowslit
702:Gatehouse
672:City gate
633:Castellum
599:Acropolis
476:The Redan
207:trunnions
146:above or
128:gatehouse
2928:Category
2692:Vlotbrug
2605:Moveable
2467:Category
2457:See also
2344:Loophole
2232:Ringwork
2227:Ringfort
2152:Obstacle
1993:Hillfort
1913:Loophole
1711:Barbette
1686:Tenaille
1669:Sea fort
1599:Presidio
1559:Magazine
1540:Hornwork
1473:Cavalier
1468:Casemate
1461:Caponier
1304:Ringwork
1192:Detinets
1161:Hoarding
1066:Enceinte
941:Bretèche
886:Bartizan
881:Barbican
857:Alcazaba
785:Stockade
765:Ringfort
745:Palisade
717:Landwehr
712:Hillfort
381:Archived
323:"Castle"
306:19 March
269:Linkspan
242:See also
187:châteaux
159:windlass
117:Medieval
2903:Related
2873:Tallest
2868:Highest
2736:Viaduct
2731:Tubular
2721:Trestle
2687:Pontoon
2630:Rolling
2620:Folding
2610:Bascule
2570:Covered
2374:Vedette
2364:Schloss
2329:Festung
2324:Dungeon
2319:Château
2263:Castles
2071:By role
1928:Pillbox
1758:Outpost
1674:Station
1662:Schanze
1645:Sandbag
1630:Redoubt
1614:Ravelin
1582:Palanka
1566:Orillon
1552:Lunette
1494:Coupure
1439:Bastion
1429:Arsenal
1397:Zwinger
1309:Roundel
1299:Ricetto
1274:Postern
1259:Outwork
1183:Kremlin
1054:Curtain
1029:Citadel
1013:Chemise
973:Caltrop
891:Bastion
864:Alcázar
760:Rampart
738:Oppidum
731:Nuraghe
677:Crannog
651:Castros
587:Ancient
537:7 March
520:Bibcode
486:4 March
482:: 19–24
452:3 March
171:Alnwick
163:bascule
120:castles
2711:Timber
2555:Canopy
2510:Bridge
2369:Trench
2359:Picket
1770:Sangar
1723:Bunker
1655:Sconce
1575:Ostrog
1523:Flèche
1406:Modern
1385:Yagura
1353:Turret
1289:Reduit
1227:Merlon
1171:Kasbah
1149:Gusuku
1126:Glacis
1119:Gabion
1088:church
995:Chashi
978:Castle
822:Laager
810:Vallum
767:(Rath)
642:Castra
624:Burgus
594:Abatis
427:
364:
233:In art
152:towers
136:hinged
52:castle
2726:Truss
2704:types
2650:Table
2645:Swing
2410:Siege
2354:Palas
2298:Walls
2288:Forts
2251:Lists
2098:Fence
2040:Rocca
1908:Kabal
1623:Redan
1530:Gorge
1454:Canal
1331:Shiro
1294:Ribat
1284:Qalat
1096:Dzong
1092:house
792:Sudis
724:Limes
682:Ditch
615:Broch
606:Agger
472:(PDF)
217:Forts
2682:Pile
2655:Tilt
2600:Moon
2575:Crib
2530:Beam
2525:Arch
2420:list
1838:Buoy
1392:Yett
1234:Moat
1201:Ksar
1176:Keep
968:Caer
958:Burh
934:Boom
927:Berm
906:Bawn
871:Amba
707:Gord
539:2022
488:2022
454:2022
425:ISBN
362:ISBN
340:2009
308:2022
132:deck
124:moat
74:and
56:moat
2595:Log
2590:Jet
692:Dun
528:doi
516:127
42:or
2945::
2459::
1094:,
1090:,
526:.
514:.
510:.
496:^
480:26
478:.
474:.
444:.
399:.
342:.
325:.
298:.
229:.
154:.
104:A
70:,
38:A
2502:e
2495:t
2488:v
1196:)
1188:(
1098:)
825:)
819:(
572:e
565:t
558:v
541:.
530::
522::
490:.
456:.
409:.
310:.
27:.
Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.
