396:
construction project contracts. For example, it specified the concrete maturity method to be used to ensure the concrete's strength (the first time TxDOT had ever done so) and contained an early-completion bonus, a sliding scale of up to $ 11 million (equivalent to $ 17.8 million in 2023) if the company completed the contract within four years. Also built into the construction contract was a provision that Zachry be charged for "lane rentals" by TxDOT for time they closed down traffic lanes—fees based on hourly assessments and the time of day the lane was closed. The fees ranged from $ 50 to a high of $ 110,000 for rush hours (equivalent to $ 81 to $ 180,000 in 2023). In order not to interfere with traffic flow during construction, the new interchange was designed largely as elevated
308:, the "High Five" name refers to the five flyover ramps that tower over the landscape, handling the left-turn movements. The interchange is as high as a 12-story building and includes 43 bridges spread across five levels (the "High Five"), 710 support tiers, and 60 miles (97 km) of additional highway lanes. The highest ramps are 100 feet (30 m) above ground. The lanes of US 75, which are on the bottom level, are 20 feet (6.1 m) below ground level, giving the structure a total height of 120 feet (37 m) from bottom to top. As part of the project, I-635 was widened to include four dedicated
34:
377:
497:
509:
1113:
324:
120:
106:
404:
To save time and money, innovative construction methods were employed: The original plans called for the segments of the long ramps and spans (used to direct-connect roads) to be made of steel, but, because building with steel would interfere with heavy traffic flow during construction, cast-in-place
395:
Zachry
Construction Corporation submitted the lowest bid and was awarded the $ 261-million (equivalent to $ 423 million in 2023) contract by TxDOT, the largest ever by that agency. The construction contract for the High Five Interchange was unique in that it contained elements not found in other
474:
named the High Five "Public Works
Project of the Year" for its massive size, its innovative design, the complexity and rapidity of its construction, and the need it fulfilled for the community. TxDOT as the managing agency, Zachry Construction Corporation as the primary contractor, and HNTB as the
384:
The High Five
Interchange project was planned as a replacement for the existing antiquated interchange, which accommodated 500,000 vehicles daily and was located in one of the most intensely developed commercial zones in Dallas. It was a collaborative project between the TxDOT, affected
368:(TxDOT). The High Five Interchange also incorporates a hiking and bike trail, named the Cottonwood Trail, which runs under all levels of the interchange. The section of the trail passing beneath the interchange was constructed as part of the High Five Interchange project by TxDOT.
676:
400:
ramps and viaducts so they could be built high over the existing junction lanes; once traffic was transferred to the new structures, the old lanes could simply be closed off and removed. Little of the original interchange remained when the project was finished.
296:
by narrowing US 75 down to two lanes at the junction of the two highways. The looped ramps of the cloverleaf forced motorists to slow down drastically, backing up traffic. Left-hand exits contributed to the congestion. Further, its two
412:, rather than casting the bridge elements in place, and used a unique machine, designed and constructed by Deal S.R.L. of Italy and costing about $ 1 million (equivalent to $ 1.62 million in 2023), to move the pieces into place.
484:
as one of "The World's 18 Strangest
Roadways", which called it a "labyrinth of lanes" and a "five-level marvel of engineering" because of its height, the number of its bridges, and other unusual design and construction features.
665:
246:
to be one of "The World's 18 Strangest
Roadways" because of its height (as high as a 12-story building), its 43 permanent bridges, and other unusual design and construction features. In 2006, the
462:, who provided professional engineering consultation throughout the construction, which had begun in 2002 and was completed in December 2005, more than 13 months sooner than planned.
346:
Level II: The junction of the two six-lane frontage roads, each having three through lanes in each direction, left-turn lanes, and turnarounds, and easy access to US 75 and I-635
832:
1079:
385:
motorists and property owners, and the primary contractor, Zachry
Construction. An essential consideration was to complete the project with as little disruption to the
392:
Reasons for upgrading the interchange, in addition to the need to increase traffic flow and reduce congestion, were to improve air quality, safety, and local access.
1164:
776:
754:
946:
441:
were completed. In addition to the construction of 43 permanent bridges, six temporary bridges were built, resulting in 2.3 million cubic feet (0.065
635:
1128:
974:
1046:
902:
826:
438:
229:
The $ 261-million (equivalent to $ 423 million in 2023) project was started in 2002 and completed in
December 2005. It was designed by
67:
706:
1050:
861:
587:
365:
186:
1014:
672:
471:
247:
865:
1154:
1123:
812:
561:
1086:
898:
783:
583:
60:
429:
was used, 350,000 cubic yards (270,000 m) of concrete was mixed on site, and 300,000 cubic feet (8,500 m) of
1159:
349:
Level III: I-635, 10 regular lanes, five going each way, and four HOV lanes (two going each way) separated by barriers
309:
274:
215:
113:
234:
151:
746:
1118:
811:
Knutson, Kraig; Schexnayder, Clifford J.; Fiori, Christine M.; Mayo, Richard (2009). "Dallas High Five
Project".
928:
426:
313:
475:
primary consultant received the award in recognition of their cooperative alliance in completing the project.
617:
269:. It is the junction of two major highways carrying heavy rush-hour traffic, the Lyndon B. Johnson Freeway (
223:
1169:
289:
278:
270:
219:
211:
123:
109:
818:
989:
1133:
1054:
891:
293:
266:
933:
938:
822:
713:
627:
622:
513:
480:
282:
242:
199:
140:
1021:
854:
985:
409:
406:
361:
33:
434:
317:
547:
430:
376:
1148:
328:
298:
501:
386:
975:"High Fives: Major Dallas Freeway Interchange Is Truly Texan in Scale, Aesthetics"
405:
segmental concrete was substituted in the plans. Zachry decided, however, to use
542:
452:
250:(APWA) named the High Five Interchange as "Public Works Projects of the Year".
1138:
591:
942:
631:
82:
69:
305:
666:"Dallas High Five Interchange honored as Public Works Project of the Year"
301:
were not directly connected to each other, making local access difficult.
397:
353:
332:
263:
323:
259:
203:
53:
356:(two levels), eliminating the left exits of the modified cloverleaf
343:
Level I: US 75, a six-lane highway, three lanes going each way
375:
322:
207:
459:
230:
1080:
Case Study: Dallas High-Five
Interchange Project; Dallas, Texas
327:
High Five
Interchange: US 75 on the bottom level; the two
890:
Skowronek, Douglas A.; Ranft, Stephen E.; Cothron, A. Scott.
210:. Located at the junction of the Lyndon B. Johnson Freeway (
707:"Best of 2006 Awards: Dallas High Five Interchange, Dallas"
415:
During the construction, 2.2 million cubic yards (1.7
433:
were built. Additionally, 40,000 feet (12,000 m) of
38:
The High Five Interchange in 2007, viewed from the south
1119:
Texas Freeway, includes picture of the old interchange
339:
From bottom to top, the roads on the five levels are:
1020:. City of Dallas Parks and Recreation. Archived from
1134:
Dallas High Five Construction Photos, Feb.-May 2004
968:
966:
964:
712:. Texas Construction. December 2006. Archived from
182:
172:
157:
146:
135:
130:
98:
59:
47:
26:
536:
534:
532:
530:
528:
364:elements, along with coloration specified by the
380:High Five Interchange under construction in 2005
288:It replaces the antiquated three-level modified
258:The High Five Interchange, north of downtown in
701:
699:
697:
578:
576:
574:
541:Johnston, Louis; Williamson, Samuel H. (2023).
360:The interchange is decorated with etchings on
806:
804:
8:
1139:Dallas High Five Interchange Tour Dallas, TX
659:
657:
655:
653:
618:"The World's 18 Strangest Roadways: Gallery"
222:, or US 75), it replaces an antiquated
437:and 75,000 linear feet (23,000 m) of
292:built in the 1960s, which caused a severe
32:
23:
1074:
1072:
611:
609:
892:Evaluating HOV Lanes in the Dallas Area
777:"High Five Interchange, Dallas - Texas"
740:
738:
736:
734:
524:
331:on the second; I-635 on the third; and
1165:Road interchanges in the United States
949:from the original on February 24, 2024
871:from the original on February 24, 2024
855:"Dallas' First Five Level Interchange"
682:from the original on February 22, 2012
908:from the original on October 22, 2020
638:from the original on February 9, 2015
7:
814:Construction Management Fundamentals
616:Sweeney, Chris (December 17, 2009).
1129:Another view of the old interchange
1051:Texas Department of Transportation
862:Texas Department of Transportation
588:Texas Department of Transportation
366:Texas Department of Transportation
187:Texas Department of Transportation
14:
1124:Alternate view of old interchange
1047:"Local Control - Success Stories"
835:from the original on May 13, 2012
757:from the original on May 11, 2012
747:"Dallas Highway Gets a High Five"
673:American Public Works Association
664:Wickstrom, Becky (June 6, 2006).
248:American Public Works Association
240:The interchange is considered by
1085:(Report). Engius. Archived from
988:. pp. 10–12. Archived from
507:
495:
118:
104:
745:Recht, David (April 17, 2006).
562:Gross Domestic Product deflator
281:), and is the first five-level
235:Zachry Construction Corporation
198:is one of the first five-level
152:Zachry Construction Corporation
973:Skains, Wesley (Winter 2004).
927:Wilson, Bill (June 19, 2002).
899:Texas Transportation Institute
1:
584:"TxDOT History: 2005 to 2001"
543:"What Was the U.S. GDP Then?"
478:The interchange is ranked by
751:Construction Equipment Guide
458:The project was designed by
310:high-occupancy vehicle lanes
16:Interchange in Dallas, Texas
1186:
1114:Google Maps Satellite View
262:, is a massive five-level
226:constructed in the 1960s.
929:"Texas Five-Pointed Star"
285:to be built in the city.
52:
43:
31:
782:. Chryso. Archived from
1155:State highways in Texas
354:Direct connection ramps
333:direct connection ramps
224:combination interchange
178:120 ft (37 m)
381:
336:
290:cloverleaf interchange
819:McGraw Hill Education
514:U.S. Roads portal
379:
335:on the two top levels
326:
312:(HOV lanes) that are
196:High Five Interchange
83:32.92417°N 96.76361°W
27:High Five Interchange
995:on November 19, 2011
594:on February 20, 2012
220:U.S. Highway 75
214:, or I-635) and the
1027:on October 27, 2010
934:Roads & Bridges
564:figures follow the
306:celebratory gesture
212:Interstate 635
88:32.92417; -96.76361
79: /
1160:Highways in Dallas
1015:"Cottonwood Trail"
982:Coatings Solutions
382:
337:
275:Central Expressway
216:Central Expressway
200:stack interchanges
161:December 2005
114:Central Expressway
1141:, ScrewdUPClickV2
1057:on April 15, 2012
828:978-0-07-340104-1
789:on April 26, 2012
719:on April 25, 2012
671:(Press release).
623:Popular Mechanics
481:Popular Mechanics
410:segmental bridges
352:Levels IV and V:
314:barrier-separated
283:stack interchange
243:Popular Mechanics
192:
191:
141:stack interchange
1177:
1102:
1101:
1099:
1097:
1092:on March 5, 2016
1091:
1084:
1076:
1067:
1066:
1064:
1062:
1053:. Archived from
1043:
1037:
1036:
1034:
1032:
1026:
1019:
1011:
1005:
1004:
1002:
1000:
994:
986:Sherwin-Williams
979:
970:
959:
958:
956:
954:
924:
918:
917:
915:
913:
907:
896:
887:
881:
880:
878:
876:
870:
859:
851:
845:
844:
842:
840:
817:(2nd ed.).
808:
799:
798:
796:
794:
788:
781:
773:
767:
766:
764:
762:
742:
729:
728:
726:
724:
718:
711:
703:
692:
691:
689:
687:
681:
670:
661:
648:
647:
645:
643:
613:
604:
603:
601:
599:
590:. Archived from
580:
569:
559:
557:
555:
538:
512:
511:
510:
502:Texas portal
500:
499:
498:
447:
446:
421:
420:
407:precast concrete
362:precast concrete
304:Alluding to the
168:
166:
122:
121:
108:
107:
94:
93:
91:
90:
89:
84:
80:
77:
76:
75:
72:
36:
24:
1185:
1184:
1180:
1179:
1178:
1176:
1175:
1174:
1145:
1144:
1110:
1105:
1095:
1093:
1089:
1082:
1078:
1077:
1070:
1060:
1058:
1045:
1044:
1040:
1030:
1028:
1024:
1017:
1013:
1012:
1008:
998:
996:
992:
977:
972:
971:
962:
952:
950:
926:
925:
921:
911:
909:
905:
894:
889:
888:
884:
874:
872:
868:
857:
853:
852:
848:
838:
836:
829:
810:
809:
802:
792:
790:
786:
779:
775:
774:
770:
760:
758:
744:
743:
732:
722:
720:
716:
709:
705:
704:
695:
685:
683:
679:
668:
663:
662:
651:
641:
639:
615:
614:
607:
597:
595:
582:
581:
572:
553:
551:
540:
539:
526:
522:
508:
506:
496:
494:
491:
468:
444:
442:
431:retaining walls
418:
416:
374:
256:
174:
164:
162:
119:
117:
105:
100:
87:
85:
81:
78:
73:
70:
68:
66:
65:
39:
22:
17:
12:
11:
5:
1183:
1181:
1173:
1172:
1167:
1162:
1157:
1147:
1146:
1143:
1142:
1136:
1131:
1126:
1121:
1116:
1109:
1108:External links
1106:
1104:
1103:
1068:
1038:
1006:
960:
919:
882:
846:
827:
800:
768:
730:
693:
649:
605:
570:
566:MeasuringWorth
560:United States
548:MeasuringWorth
523:
521:
518:
517:
516:
504:
490:
487:
467:
464:
435:drilled shafts
373:
370:
358:
357:
350:
347:
344:
329:frontage roads
299:frontage roads
255:
252:
190:
189:
184:
180:
179:
176:
170:
169:
159:
155:
154:
148:
144:
143:
137:
133:
132:
128:
127:
102:
96:
95:
63:
57:
56:
50:
49:
45:
44:
41:
40:
37:
29:
28:
20:
15:
13:
10:
9:
6:
4:
3:
2:
1182:
1171:
1170:U.S. Route 75
1168:
1166:
1163:
1161:
1158:
1156:
1153:
1152:
1150:
1140:
1137:
1135:
1132:
1130:
1127:
1125:
1122:
1120:
1117:
1115:
1112:
1111:
1107:
1088:
1081:
1075:
1073:
1069:
1056:
1052:
1048:
1042:
1039:
1023:
1016:
1010:
1007:
991:
987:
983:
976:
969:
967:
965:
961:
948:
944:
940:
936:
935:
930:
923:
920:
904:
900:
893:
886:
883:
867:
864:. July 2001.
863:
856:
850:
847:
834:
830:
824:
820:
816:
815:
807:
805:
801:
785:
778:
772:
769:
756:
752:
748:
741:
739:
737:
735:
731:
715:
708:
702:
700:
698:
694:
678:
674:
667:
660:
658:
656:
654:
650:
637:
633:
629:
625:
624:
619:
612:
610:
606:
593:
589:
585:
579:
577:
575:
571:
567:
563:
550:
549:
544:
537:
535:
533:
531:
529:
525:
519:
515:
505:
503:
493:
492:
488:
486:
483:
482:
476:
473:
465:
463:
461:
456:
454:
450:
440:
439:drainage pipe
436:
432:
428:
424:
413:
411:
408:
402:
399:
393:
390:
389:as possible.
388:
378:
371:
369:
367:
363:
355:
351:
348:
345:
342:
341:
340:
334:
330:
325:
321:
319:
315:
311:
307:
302:
300:
295:
291:
286:
284:
280:
276:
272:
268:
265:
261:
260:Dallas, Texas
253:
251:
249:
245:
244:
238:
236:
233:and built by
232:
227:
225:
221:
217:
213:
209:
205:
201:
197:
188:
185:
183:Maintained by
181:
177:
171:
160:
156:
153:
150:2002–2005 by
149:
145:
142:
138:
134:
129:
126:(LBJ Freeway)
125:
115:
111:
103:
97:
92:
64:
62:
58:
55:
54:Dallas, Texas
51:
46:
42:
35:
30:
25:
21:Road junction
19:
1094:. Retrieved
1087:the original
1059:. Retrieved
1055:the original
1041:
1031:February 23,
1029:. Retrieved
1022:the original
1009:
997:. Retrieved
990:the original
981:
951:. Retrieved
932:
922:
910:. Retrieved
885:
873:. Retrieved
849:
837:. Retrieved
813:
791:. Retrieved
784:the original
771:
759:. Retrieved
750:
721:. Retrieved
714:the original
684:. Retrieved
640:. Retrieved
621:
596:. Retrieved
592:the original
565:
554:November 30,
552:. Retrieved
546:
479:
477:
469:
457:
451: m) of
448:
425: m) of
422:
414:
403:
394:
391:
387:traffic flow
383:
359:
338:
303:
287:
257:
241:
239:
228:
195:
193:
131:Construction
18:
466:Recognition
453:bridge deck
267:interchange
254:Description
147:Constructed
139:Five-level
86: /
61:Coordinates
1149:Categories
1096:January 3,
1061:January 2,
999:January 2,
953:January 4,
912:January 2,
897:(Report).
875:January 2,
839:January 3,
793:January 2,
761:January 3,
723:January 3,
686:January 5,
642:January 2,
598:January 2,
520:References
318:reversible
294:bottleneck
279:US 75
273:) and the
110:US 75
74:96°45′49″W
71:32°55′27″N
943:8750-9229
632:0032-4558
470:In 2006,
427:earthwork
202:built in
947:Archived
903:Archived
866:Archived
833:Archived
755:Archived
677:Archived
636:Archived
568:series.
489:See also
101:junction
99:Roads at
48:Location
398:flyover
372:History
264:freeway
173:Maximum
165:2005-12
163: (
941:
825:
630:
204:Dallas
175:height
158:Opened
1090:(PDF)
1083:(PDF)
1025:(PDF)
1018:(PDF)
993:(PDF)
978:(PDF)
906:(PDF)
895:(PDF)
869:(PDF)
858:(PDF)
787:(PDF)
780:(PDF)
717:(PDF)
710:(PDF)
680:(PDF)
669:(PDF)
320:.
271:I-635
208:Texas
124:I-635
1098:2012
1063:2012
1033:2010
1001:2012
955:2012
939:ISSN
914:2012
877:2012
841:2012
823:ISBN
795:2012
763:2012
725:2012
688:2012
644:2012
628:ISSN
600:2012
556:2023
472:APWA
460:HNTB
316:and
231:HNTB
194:The
136:Type
1151::
1071:^
1049:.
984:.
980:.
963:^
945:.
937:.
931:.
901:.
860:.
831:.
821:.
803:^
753:.
749:.
733:^
696:^
675:.
652:^
634:.
626:.
620:.
608:^
586:.
573:^
545:.
527:^
455:.
445:10
419:10
237:.
206:,
1100:.
1065:.
1035:.
1003:.
957:.
916:.
879:.
843:.
797:.
765:.
727:.
690:.
646:.
602:.
558:.
449:^
443:×
423:^
417:×
277:(
218:(
167:)
116:)
112:(
Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.
