416:
403:
36:
1044:
372:. The 11.25 m (36 ft 11 in) diameter hard rock single shield TBM started its journey in the summer of 2016 from the Saint-Martin-de-la-Porte access adit and managed to maintain an average speed of 15–20 m (49 ft 3 in – 65 ft 7 in)/day. This first €390 million lot of the base tunnel was constructed by a joint venture of Batignolles TPCI, Eiffage TP,
345:, which has stated its intention to finance 40% of the tunnel construction costs, and has indicated its willingness to increase its contribution to 55%, as well as to help fund its French accesses if those go beyond mere adaptations of the existing infrastructure. In January 2017, a treaty was ratified between the two countries, confirming the project's approval.
337:
during 2003, and at La Praz two years later. During 2011, excavations in support of the survey work started on the
Italian side at La Maddalena. Between 2016 and 2017, while full-rate construction of the tunnel had not officially commenced, a 9 km (5.6 mi) reconnaissance gallery had been
316:
8 billion. During
September 2016, a key agreement towards the tunnel's construction was reached by France and Italy. Three years later, competitive tenders to perform packaged elements of the construction work were sought. As of late-2022, the expected completion date for the base tunnel was 2032.
497:
The tunnel will be used by both freight trains and freight shuttles running at 100 km/h (62 mph), as well and by higher speed passenger trains operating at 220 km/h (140 mph); this design speed of slightly below the 250 km/h (160 mph) threshold used by the
European
356:
had been awarded a contract for the construction of several major elements of tunnel, including four
Avrieux shafts of up to 500 m (1,640 ft 5 in) depth, and the conventional excavation of multiple galleries and seven caverns at the foot of the Villarodin Bourget–Modane decline.
434:
movement. As a result of protests against the original alignment of the tunnel in the Susa valley, it was decided to increase its length from 52 to 57.5 km (32.3 to 35.7 mi). Upon opening, the tunnel will be the longest rail tunnel in the world, followed by the
352:(RFP) for the construction of the French portion of the base tunnel; in July 2019, a second RFP was released for the Italian portion of the tunnel. During July 2020, it was announced that a consortium headed by the French civil engineering firm
281:. Once completed, it will facilitate the principal high-speed rail link between Italy and France, conveying both high-speed passenger trains and rail freight between the two countries. At 57.5 kilometres (35.7 mi), that tunnel will be the
485:
The cost of the joint Franco-Italian section (from Saint Jean de
Maurienne to Val Susa) has been estimated at 8 billion euros (in January 2018 value). This cost will be borne by the French and Italian governments, as well as drawing upon
338:
tunneled from Saint Martin de la Porte towards Italy; it was bored along the intended axis of the South tube of the tunnel and was driven at its final diameter. It will comprise the first eight percent of the tunnel's final length.
490:(EU) funds. The EU has agreed to provide 40% of the financing, but has indicated its willingness to increase its contribution to 55%, as well as to conditionally partially fund its French accesses. However, a 2012 report by the
394:
The approach routes are less advanced; planning is under way on the French side, but on the
Italian side the proposed route has had fierce controversy, particularly in the Susa Valley the location of the Eastern portal, with a
389:
Lot 3 (€228 million) for 3 km (1.9 mi) between Saint-Martin-de-la-Porte and the
Western (French) Portal at Saint-Julien-Mont-Denis; the shortest, but with difficult geology requiring all blasting; expected to take 70
360:
All four of the access tunnels, three in France and one in Italy, have been completed and work began in early 2019 on the artificial tunnel that will be the entrance to the base tunnel on the French side.
813:
341:
During
September 2016, it was announced that France and Italy had reached a mutual agreement for the construction of the tunnel. Furthermore, the tunnel has been approved and part-financed by the
795:
999:
739:
399:(no to high-speed rail) movement. The 2016 approval legislation could require extension of the tunnel by 5 km (3.1 mi) to reduce the impact on the local landscape.
974:
1026:"Decision No 661/2010/EU of the European Parliament and of the Council of 7 July 2010 on Union guidelines for the development of the trans-European transport network"
917:
1065:
502:. A stated aim of the project is a modal shift from road to rail for freight traffic over the Alps, as well as more passengers travelling by train rather than
368:(TBMs) to be used on the project finished excavation of the first 9 km (5.6 mi) of the southern tube of the base tunnel, reaching the La Praz access
862:
717:
764:
383:
Lot 1 (€1.47 billion) for 22 km (13.7 mi) between
Villarodin-Bourget/Modane and the Eastern (Italian) portal; expected to take 72 months
1048:
1119:
1003:
1129:
982:
386:
Lot 2 (€1.43 billion) for 23 km (14.3 mi) between Saint-Martin-de-la-Porte/La Praz and Modane; expected to take 65 months
643:
580:
427:. During 2019, it was stated that the tunnel's construction phase had been projected to take approximately ten years to complete.
876:
902:
289:. It represents one third of the estimated overall cost of the project and is the only part of the line where work has started.
960:
942:
687:
555:
1104:
1025:
1109:
529:
424:
278:
62:
612:"The European Commission welcomes the agreement between France and Italy to move ahead with the Lyon-Turin project"
1000:"Situation et perspectives des finances publiques 2012 / Publications / Publications / Accueil - Cour des comptes"
611:
781:
1114:
978:
673:
669:
1134:
470:
side. The geology adjacent to the French portal is heavily composed of fractured and sheared coal-bearing
995:
494:
questioned the reliability of the estimated costs of the tunnel, as well the projected traffic volumes.
814:"Ligne ferroviaire Lyon-Turin : malgré les tensions, Rome valide le lancement des appels d'offres"
491:
334:
740:"Telt annonce le percement de la section du tunnel de base entre Saint-Martin-la-Porte et La Praz"
459:
282:
209:
718:"Manuel Valls inaugure le tunnelier Federica au chantier du Lyon-Turin Ă Saint-Martin-La-Porte"
691:
519:
161:
918:"What is happening with the Lyon Turin high-speed line? Euronews traces the route to find out"
1124:
479:
475:
406:
Profile of Mont d'Ambin Base Tunnel (sections excavated in blue, sections in progress in red)
365:
835:
22:
436:
349:
286:
214:
629:
423:
The Mont d'Ambin Base Tunnel is the principal engineering challenge of the in-development
8:
440:
647:
584:
499:
796:"L'accord franco-italien pour la ligne ferroviaire Lyon-Turin définitivement adopté"
534:
402:
373:
415:
695:
452:
258:
115:
487:
463:
448:
342:
201:
863:"Vinci consortium wins contract for preparatory work for Lyon–Turin rail line"
1098:
1080:
1067:
444:
119:
430:
Opposition to the project is mostly organised under the loose banner of the
166:
297:
173:
83:
765:"L'Union européenne confirme une participation accrue sur le Lyon-Turin"
376:, CMC, Cogeis and Sotrabas. Egis and Alpina provided project management
961:"Covid-19 : retour à la normalité sur les chantiers du Lyon-Turin"
836:"Lyon-Turin : les avis de marché publiés pour le tronçon italien"
482:
has to be used for the corresponding 5 km (3.1 mi) section.
379:
Contracts for the Mount Cenis Base Tunnel were awarded in July 2021:
305:
145:
72:
503:
353:
301:
782:"Lyon-Turin : vers les 55 % de contribution européenne"
474:, as revealed by test drilling, which is poorly suited for using
16:
Railway tunnel through the
Cottian Alps between France and Italy
1043:
471:
330:
326:
309:
35:
630:"TELT Lyon Turin • A new excavation front for the Lyon-Turin"
467:
443:(55 km (34 mi), currently under construction), the
1054:
524:
369:
313:
293:
149:
348:
During March 2019, the Italian government issued a formal
419:
Geothermal profile of new Turin-Lyon railway base tunnel
556:"After Earning World Record, Alpine Tunnels Move Ahead"
903:"Les travaux du Lyon-Turin débutent le 15 janvier"
857:
855:
853:
802:(in French). 26 January 2017 – via Le Monde.
325:During 2002, reconnaissance work commenced on the
329:side. Initially, access points were excavated at
1096:
915:
850:
455:in South Korea (50.3 km (31.3 mi)).
447:in Japan (53.85 km (33.46 mi)), the
865:. worldconstructionnetwork.com. 13 July 2020.
895:
892:, October 2021 (Volume 177 No 10), pp. 40–43
877:"Lyon-Turin begins base line tender process"
869:
788:
616:Mobility and Transport - European Commission
943:"Progressing the Lyon-Turin base rail link"
732:
285:, ahead of the 57.1 km (35.5 mi)
935:
606:
604:
602:
34:
916:Montalto Monella, Lillo (26 March 2019).
776:
774:
759:
757:
506:, both of which achieve a reduction in CO
451:(50.45 km (31.35 mi)), and the
277:, is the largest engineering work of the
975:"Brenner base tunnel wins TEN-T funding"
414:
401:
599:
1097:
771:
754:
364:In September 2019, the first of eight
953:
909:
553:
816:(in French). Le Monde. 11 March 2019
710:
636:
573:
439:(57.1 km (35.5 mi)), the
13:
1120:Proposed railway tunnels in Europe
1055:Lyon-Turin rail link official site
410:
14:
1146:
1058:(in Italian, French, and English)
1036:
981:. 11 January 2008. Archived from
354:Vinci Construction Grands Projets
1042:
283:longest rail tunnel in the world
1018:
989:
967:
883:
828:
806:
694:. 10 April 2016. Archived from
680:
662:
622:
547:
458:The tunnel portals will be in
312:. It has an estimated cost of
157:
1:
1130:France–Italy border crossings
979:Railway Gazette International
890:Railway Gazette International
674:Railway Gazette International
554:Reina, Peter (16 June 2016).
540:
530:Turin–Lyon high-speed railway
425:Turin–Lyon high-speed railway
63:Turin–Lyon high-speed railway
879:. Tunneltalk. 19 March 2020.
279:Lyon–Turin rail link project
234:220 km/h (140 mph)
7:
513:
333:; excavations commenced in
242:100 km/h (62 mph)
40:Cross-section of the tunnel
10:
1151:
320:
253:580 metres (1,900 ft)
20:
1105:Railway tunnels in France
257:
249:
222:
208:
172:
156:
140:
135:
125:
111:
103:
95:
90:
79:
68:
58:
50:
45:
33:
1110:Railway tunnels in Italy
1049:Mont d'Ambin Base Tunnel
688:"Decouvrez la Maddalena"
335:Saint-Martin-de-la-Porte
271:Mont d'Ambin Base Tunnel
218:25 kV 50 Hz AC
29:Mont d'Ambin Base Tunnel
21:Not to be confused with
560:Engineering News-Record
462:on the French side and
460:Saint-Jean-de-Maurienne
263:8.4 metres (28 ft)
1081:45.190748°N 6.781311°E
692:Lyon Turin Ferroviaire
520:Lyon Turin Ferroviaire
476:tunnel boring machines
420:
407:
366:tunnel boring machines
275:Mont Cenis Base Tunnel
1115:Transport in Piedmont
646:. LTF. Archived from
583:. LTF. Archived from
498:Commission to define
492:French Court of Audit
480:drilling and blasting
478:; thus, conventional
418:
405:
350:request for proposals
131:Passenger and freight
1051:at Wikimedia Commons
618:. 22 September 2016.
581:"The Alpine tunnels"
437:Gotthard Base Tunnel
287:Gotthard Base Tunnel
273:, also known as the
1135:Tunnels in the Alps
1086:45.190748; 6.781311
1077: /
905:. 18 December 2018.
650:on 22 February 2012
644:"Close-up on works"
500:high-speed railways
441:Brenner Base Tunnel
30:
963:. TELT Lyon-Turin.
947:www.tunneltalk.com
587:on 31 October 2006
421:
408:
54:Under construction
28:
23:Fréjus Rail Tunnel
1047:Media related to
670:"Boring contract"
267:
266:
250:Highest elevation
1142:
1092:
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1087:
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1075:
1074:
1073:
1070:
1059:
1046:
1030:
1029:
1022:
1016:
1015:
1013:
1011:
1002:. Archived from
993:
987:
986:
971:
965:
964:
957:
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950:
939:
933:
932:
930:
928:
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778:
769:
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751:
749:
747:
736:
730:
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727:
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720:(in French). LTF
714:
708:
707:
705:
703:
698:on 25 April 2016
684:
678:
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666:
660:
659:
657:
655:
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626:
620:
619:
608:
597:
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577:
571:
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566:
551:
535:Lists of tunnels
259:Tunnel clearance
204:
198:
196:
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191:
188:
180:
159:
116:passenger trains
38:
31:
27:
1150:
1149:
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1063:
1057:
1039:
1034:
1033:
1024:
1023:
1019:
1009:
1007:
998:
994:
990:
985:on 31 May 2012.
973:
972:
968:
959:
958:
954:
941:
940:
936:
926:
924:
914:
910:
901:
900:
896:
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851:
841:
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780:
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763:
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743:
738:
737:
733:
723:
721:
716:
715:
711:
701:
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686:
685:
681:
676:. 1 March 2005.
668:
667:
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651:
642:
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637:
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623:
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609:
600:
590:
588:
579:
578:
574:
564:
562:
552:
548:
543:
516:
509:
453:Yulhyeon Tunnel
413:
411:Characteristics
323:
245:
223:Operating speed
217:
200:
193:
189:
186:
184:
183:4 ft
182:
178:
130:
41:
26:
17:
12:
11:
5:
1148:
1138:
1137:
1132:
1127:
1122:
1117:
1112:
1107:
1061:
1060:
1052:
1038:
1037:External links
1035:
1032:
1031:
1017:
1006:on 8 July 2012
988:
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572:
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532:
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512:
507:
488:European Union
449:Channel Tunnel
412:
409:
392:
391:
387:
384:
343:European Union
322:
319:
265:
264:
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255:
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251:
247:
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202:standard gauge
176:
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120:freight trains
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15:
9:
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4:
3:
2:
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1128:
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1123:
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1103:
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1093:
1090:
1056:
1053:
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1041:
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1027:
1021:
1005:
1001:
996:
992:
984:
980:
976:
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962:
956:
948:
944:
938:
923:
919:
912:
904:
898:
891:
886:
878:
872:
864:
858:
856:
854:
837:
831:
815:
809:
801:
797:
791:
783:
777:
775:
766:
760:
758:
741:
735:
719:
713:
697:
693:
690:(in French).
689:
683:
675:
671:
665:
649:
645:
639:
631:
625:
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613:
607:
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586:
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533:
531:
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493:
489:
483:
481:
477:
473:
469:
465:
461:
456:
454:
450:
446:
445:Seikan Tunnel
442:
438:
433:
428:
426:
417:
404:
400:
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292:Crossing the
290:
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241:
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179:1,435 mm
177:
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61:
57:
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49:
44:
37:
32:
24:
19:
1125:Base tunnels
1062:
1020:
1008:. Retrieved
1004:the original
991:
983:the original
969:
955:
946:
937:
925:. Retrieved
921:
911:
897:
889:
885:
871:
840:. Retrieved
830:
818:. Retrieved
808:
799:
790:
784:(in French).
767:(in French).
746:18 September
744:. Retrieved
734:
722:. Retrieved
712:
700:. Retrieved
696:the original
682:
664:
652:. Retrieved
648:the original
638:
624:
615:
589:. Retrieved
585:the original
575:
563:. Retrieved
559:
549:
496:
484:
457:
431:
429:
422:
396:
393:
378:
363:
359:
347:
340:
324:
296:between the
291:
274:
270:
268:
237:
229:
167:Double track
107:2019–present
18:
1084: /
838:(in French)
800:Le Monde.fr
742:(in French)
510:emissions.
298:Susa Valley
215:Electrified
210:Electrified
174:Track gauge
148:(35.7
104:Constructed
84:Susa Valley
1099:Categories
1069:45°11′27″N
541:References
230:Passenger:
144:57.5
96:Work begun
1072:6°46′53″E
1010:22 August
504:airliners
306:Maurienne
136:Technical
129:Twin tube
126:Character
91:Operation
73:Maurienne
922:Euronews
724:1 August
702:10 April
514:See also
302:Piedmont
238:Freight:
197: in
75:, France
46:Overview
842:18 July
820:18 July
654:2 March
591:2 March
565:20 June
472:schists
468:Italian
466:on the
321:History
192:⁄
112:Traffic
86:, Italy
432:No TAV
397:No TAV
390:months
374:Ghella
331:Modane
327:French
310:Savoie
162:tracks
141:Length
59:System
51:Status
927:2 May
69:Start
1012:2012
929:2019
844:2019
822:2019
748:2019
726:2016
704:2016
656:2012
593:2012
567:2016
525:NRLA
464:Susa
370:adit
304:and
294:Alps
269:The
118:and
99:2002
308:in
300:in
160:of
158:No.
80:End
1101::
997:,
977:.
945:.
920:.
852:^
798:.
773:^
756:^
672:.
614:.
601:^
558:.
199:)
150:mi
146:km
1028:.
1014:.
949:.
931:.
846:.
824:.
750:.
728:.
706:.
658:.
632:.
595:.
569:.
508:2
314:€
194:2
190:1
187:+
185:8
181:(
152:)
25:.
Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.
