261:
199:
873:
309:
1044:
588:
277:
451:
276:
293:
38:
239:
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
260:
936:
972:
250:
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
417:
292:
982:
962:
904:
499:
37:
167:, which employs the same principle. Bascule bridges are the most common type of movable span because they open quickly and require relatively little
967:
957:
620:
566:
391:
525:
1073:
684:
251:
977:
479:
424:
914:
224:
that raises the span(s). The
Chicago bascule name derives from the location where it is widely used, and is a refinement by
924:
308:
909:
823:
613:
931:
899:
592:
160:, or leaf, throughout its upward swing to provide clearance for boat traffic. It may be single- or double-leafed.
225:
192:
1068:
1008:
992:
987:
952:
894:
341:
240:
754:
699:
606:
326:
336:
198:
872:
559:
919:
861:
784:
446:
835:
669:
537:
55:
183:
in the 1850s, very long, heavy spans could not be moved quickly enough for practical application.
796:
779:
759:
749:
744:
282:
Animation of a double-leaf
Strauss fixed-trunnion bridge (based on engineering drawings from the
171:
to operate, while providing the possibility for unlimited vertical clearance for marine traffic.
157:
659:
1013:
818:
704:
679:
654:
475:
387:
283:
59:
1047:
791:
17:
889:
724:
346:
153:
27:
Moveable bridge with a counterweight which keeps the span(s) balanced during the upswing
1029:
850:
840:
806:
739:
689:
503:
299:
164:
1062:
830:
674:
207:
845:
769:
764:
73:
381:
377:
801:
774:
719:
694:
649:
644:
560:"Analysis of the force distribution on operating mechanisms in a bascule bridge"
180:
179:
Bascule bridges have been in use since ancient times, but until the adoption of
69:
352:
191:"Strauss bascule" redirects here. For the company started by its inventor, see
734:
714:
709:
664:
331:
51:
495:
529:
128:
598:
587:
811:
267:
216:
530:"Broadway Bridge, Spanning Willamette River at Broadway Street [
855:
449:, Scherzer, William, "Lift-Bridge", issued 26 December 1893
266:
The counterweight is often hidden below the road surface in the bridge
629:
168:
193:
Joseph
Strauss (engineer) § Early career and the bascule bridge
197:
221:
602:
91:
Pedestrian, bicycle, automobile, truck, light rail, heavy rail
871:
210:
to the span may be located above or below the bridge deck.
42:
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
18:Scherzer rolling lift bridge
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:
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:)
Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.