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Bascule bridge

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trunnion (sometimes a "Scherzer" rolling lift), raises the span by rolling on a track resembling a rocking-chair base. The "Scherzer" rolling lift is a refinement patented in 1893 by American engineer
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type combines rolling lift with longitudinal motion on trunnions when opening. It was patented (1901) by Theodor Rall. One of the few surviving examples is the
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that raises the span(s). The Chicago bascule name derives from the location where it is widely used, and is a refinement by
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in the 1850s, very long, heavy spans could not be moved quickly enough for practical application.
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Animation of a double-leaf Strauss fixed-trunnion bridge (based on engineering drawings from the
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to operate, while providing the possibility for unlimited vertical clearance for marine traffic.
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Moveable bridge with a counterweight which keeps the span(s) balanced during the upswing
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Bascule bridges have been in use since ancient times, but until the adoption of
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The counterweight is often hidden below the road surface in the bridge
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Joseph Strauss (engineer) § Early career and the bascule bridge
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Pedestrian, bicycle, automobile, truck, light rail, heavy rail
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to the span may be located above or below the bridge deck.
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This animation shows the movement of a double-leaf bascule.
474:(3rd ed.). Urban Adventure Press. pp. 32, 35. 418:"Landmark Designation Report: Historic Chicago Bridges" 220:(sometimes a "Chicago" bascule) rotates around a large 427:. September 2007 . pp. 12, 15 (pdf pages 14, 17) 1022: 1001: 945: 882: 637: 412: 410: 127: 119: 111: 103: 95: 87: 79: 65: 47: 156:with a counterweight that continuously balances a 937:List of lists of covered bridges in North America 298:Animation of a rolling lift bridge (such as the 206:There are three types of bascule bridge and the 496:"Patent number 669348: T. Rall movable bridge" 465: 463: 461: 614: 202:A road sign indicating a bascule bridge ahead 8: 30: 621: 607: 599: 470:Wood Wortman, Sharon; Wortman, Ed (2006). 500:United States Patent and Trademark Office 349:for a list of other movable bridge types 163:The name comes from the French term for 368: 256: 534:], Portland, Multnomah County, OR" 29: 7: 526:Historic American Engineering Record 314:Bascule bridge in the down position 558:Van Zantvliet, P. S. (June 2015). 25: 905:medieval stone bridges in Germany 1043: 1042: 586: 572:from the original on 2021-09-21. 307: 291: 275: 259: 134:Site and prefabrication specific 36: 425:Commission on Chicago Landmarks 1: 862:Visual index to various types 254:(1913), in Portland, Oregon. 685:Cantilever spar cable-stayed 1090: 1074:Bridges by structural type 383:Movable bridge engineering 190: 1038: 869: 376:Koglin, Terry L. (2003). 35: 973:Continuous truss bridges 946:Lists of bridges by size 883:Lists of bridges by type 472:The Portland Bridge Book 386:. John Wiley and Sons. 342:List of bascule bridges 241:William Donald Scherzer 228:of the fixed-trunnion. 144:(also referred to as a 932:List of bridge–tunnels 876: 700:Double-beam drawbridge 502:(referenced online by 327:Double-beam drawbridge 203: 925:vertical-lift bridges 875: 337:Johnson Street Bridge 201: 983:Masonry arch bridges 963:Cable-stayed bridges 595:at Wikimedia Commons 378:"4. Bascule Bridges" 910:multi-level bridges 538:Library of Congress 447:US grant 511713 56:Plate girder bridge 32: 968:Cantilever bridges 958:Suspension bridges 900:cantilever bridges 877: 797:Navigable aqueduct 204: 1056: 1055: 1014:Bridge to nowhere 915:road–rail bridges 632:-related articles 591:Media related to 393:978-0-471-41960-0 284:Henry Ford Bridge 138: 137: 60:cantilever bridge 16:(Redirected from 1081: 1046: 1045: 1002:Additional lists 638:Structural types 623: 616: 609: 600: 590: 574: 573: 571: 564: 555: 549: 548: 546: 544: 522: 516: 515: 513: 511: 492: 486: 485: 467: 456: 455: 454: 450: 443: 437: 436: 434: 432: 422: 414: 405: 404: 402: 400: 373: 357: 347:Moveable bridges 311: 295: 279: 263: 237: 236: 40: 33: 21: 1089: 1088: 1084: 1083: 1082: 1080: 1079: 1078: 1069:Bascule bridges 1059: 1058: 1057: 1052: 1034: 1018: 1009:Bridge failures 997: 941: 895:bascule bridges 890:List of bridges 878: 867: 755:Rolling bascule 633: 627: 593:Bascule bridges 583: 578: 577: 569: 562: 557: 556: 552: 542: 540: 524: 523: 519: 509: 507: 494: 493: 489: 482: 469: 468: 459: 452: 445: 444: 440: 430: 428: 420: 416: 415: 408: 398: 396: 394: 375: 374: 370: 365: 360: 355: 322: 315: 312: 303: 296: 287: 280: 271: 264: 252:Broadway Bridge 234: 233: 196: 189: 177: 154:moveable bridge 43: 28: 23: 22: 18:Bascule bridges 15: 12: 11: 5: 1087: 1085: 1077: 1076: 1071: 1061: 1060: 1054: 1053: 1051: 1050: 1039: 1036: 1035: 1033: 1032: 1030:Bridges in art 1026: 1024: 1020: 1019: 1017: 1016: 1011: 1005: 1003: 999: 998: 996: 995: 990: 985: 980: 975: 970: 965: 960: 955: 949: 947: 943: 942: 940: 939: 934: 929: 928: 927: 922: 917: 912: 907: 902: 897: 886: 884: 880: 879: 870: 868: 866: 865: 858: 853: 848: 843: 838: 833: 828: 827: 826: 816: 815: 814: 804: 799: 794: 789: 788: 787: 782: 777: 772: 767: 762: 757: 752: 747: 742: 737: 732: 722: 717: 712: 707: 702: 697: 692: 687: 682: 677: 672: 667: 662: 657: 652: 647: 641: 639: 635: 634: 628: 626: 625: 618: 611: 603: 597: 596: 582: 581:External links 579: 576: 575: 550: 517: 504:Google Patents 487: 480: 457: 438: 406: 392: 367: 366: 364: 361: 359: 358: 350: 344: 339: 334: 329: 323: 321: 318: 317: 316: 313: 306: 304: 300:Pegasus Bridge 297: 290: 288: 281: 274: 272: 265: 258: 226:Joseph Strauss 208:counterweights 188: 185: 176: 173: 150:lifting bridge 142:bascule bridge 136: 135: 132: 125: 124: 121: 117: 116: 113: 109: 108: 105: 101: 100: 97: 93: 92: 89: 85: 84: 81: 77: 76: 67: 63: 62: 49: 45: 44: 41: 31:Bascule bridge 26: 24: 14: 13: 10: 9: 6: 4: 3: 2: 1086: 1075: 1072: 1070: 1067: 1066: 1064: 1049: 1041: 1040: 1037: 1031: 1028: 1027: 1025: 1021: 1015: 1012: 1010: 1007: 1006: 1004: 1000: 994: 991: 989: 986: 984: 981: 979: 976: 974: 971: 969: 966: 964: 961: 959: 956: 954: 951: 950: 948: 944: 938: 935: 933: 930: 926: 923: 921: 918: 916: 913: 911: 908: 906: 903: 901: 898: 896: 893: 892: 891: 888: 887: 885: 881: 874: 864: 863: 859: 857: 854: 852: 849: 847: 844: 842: 839: 837: 834: 832: 829: 825: 822: 821: 820: 817: 813: 810: 809: 808: 805: 803: 800: 798: 795: 793: 790: 786: 785:Vertical-lift 783: 781: 778: 776: 773: 771: 768: 766: 763: 761: 758: 756: 753: 751: 748: 746: 743: 741: 738: 736: 733: 731: 728: 727: 726: 723: 721: 718: 716: 713: 711: 708: 706: 703: 701: 698: 696: 693: 691: 688: 686: 683: 681: 678: 676: 673: 671: 668: 666: 663: 661: 660:Bridge–tunnel 658: 656: 653: 651: 648: 646: 643: 642: 640: 636: 631: 624: 619: 617: 612: 610: 605: 604: 601: 594: 589: 585: 584: 580: 568: 561: 554: 551: 539: 535: 533: 527: 521: 518: 505: 501: 497: 491: 488: 483: 481:0-9787365-1-6 477: 473: 466: 464: 462: 458: 448: 442: 439: 426: 419: 413: 411: 407: 395: 389: 385: 384: 379: 372: 369: 362: 354: 351: 348: 345: 343: 340: 338: 335: 333: 330: 328: 325: 324: 319: 310: 305: 301: 294: 289: 285: 278: 273: 269: 262: 257: 255: 253: 249: 244: 242: 238: 229: 227: 223: 219: 218: 211: 209: 200: 194: 186: 184: 182: 174: 172: 170: 166: 165:balance scale 161: 159: 155: 151: 147: 143: 133: 130: 126: 122: 120:Design effort 118: 114: 110: 106: 102: 98: 94: 90: 86: 82: 78: 75: 71: 68: 64: 61: 57: 53: 50: 46: 39: 34: 19: 978:Arch bridges 920:toll bridges 860: 836:Through arch 729: 670:Cable-stayed 553: 541:. Retrieved 531: 520: 508:. Retrieved 490: 471: 441: 429:. Retrieved 397:. Retrieved 382: 371: 247: 245: 235:rolling lift 232: 230: 214: 212: 205: 178: 162: 149: 145: 141: 139: 74:swing bridge 780:Transporter 760:Submersible 745:Retractable 353:Straussbrug 181:steam power 70:Lift bridge 1063:Categories 819:Suspension 735:Drawbridge 705:Extradosed 680:Cantilever 665:Burr Truss 655:Box girder 363:References 356:(in Dutch) 332:Drawbridge 246:The rarer 146:drawbridge 96:Span range 80:Descendant 52:Drawbridge 953:By length 792:Multi-way 543:April 21, 510:April 21, 431:April 21, 129:Falsework 1048:Category 812:Vlotbrug 725:Moveable 567:Archived 320:See also 268:abutment 217:trunnion 131:required 104:Material 48:Ancestor 1023:Related 993:Tallest 988:Highest 856:Viaduct 851:Tubular 841:Trestle 807:Pontoon 750:Rolling 740:Folding 730:Bascule 690:Covered 506:). 1901 399:May 25, 175:History 152:) is a 112:Movable 88:Carries 66:Related 831:Timber 675:Canopy 630:Bridge 478:  453:  390:  215:fixed- 169:energy 123:Medium 846:Truss 824:types 770:Table 765:Swing 570:(PDF) 563:(PDF) 421:(PDF) 187:Types 148:or a 107:Steel 99:Short 802:Pile 775:Tilt 720:Moon 695:Crib 650:Beam 645:Arch 545:2013 512:2013 476:ISBN 433:2013 401:2009 388:ISBN 248:Rall 231:The 222:axle 213:The 158:span 83:None 715:Log 710:Jet 532:sic 115:Yes 1065:: 565:. 536:. 528:. 498:. 460:^ 423:. 409:^ 380:. 243:. 140:A 72:, 58:, 54:, 622:e 615:t 608:v 547:. 514:. 484:. 435:. 403:. 302:) 286:) 270:. 195:. 20:)

Index

Bascule bridges
This animation shows the movement of a double-leaf bascule.
Drawbridge
Plate girder bridge
cantilever bridge
Lift bridge
swing bridge
Falsework
moveable bridge
span
balance scale
energy
steam power
Joseph Strauss (engineer) § Early career and the bascule bridge

counterweights
trunnion
axle
Joseph Strauss
William Donald Scherzer
Broadway Bridge
The counterweight is often hidden below the road surface in the bridge abutment.
abutment
Animation of a double-leaf Strauss fixed-trunnion bridge (based on engineering drawings from the Henry Ford Bridge)
Henry Ford Bridge
Animation of a rolling lift bridge (such as the Pegasus Bridge)
Pegasus Bridge
Bascule bridge in the down position
Double-beam drawbridge
Drawbridge

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