Editing Gotthard Base Tunnel (section)

====Allocation of work====
[[File:Gotthard Basistunnel Portal Nord 2009-06-14.jpg|thumb|Aerial view of the Erstfeld area (north portal) in 2009]]
The contracts were awarded in sections:
* [[Erstfeld]] (the {{convert|7.7|km|mi|1|abbr=on}} section from Erstfeld to [[Amsteg]]), with two [[tunnel boring machine]]s (TBM) boring the two tubes. The break-through of the east tube between Erstfeld and Amsteg took place on 15 June 2009. The portal area was [[Cut-and-cover|surface-mined]].
* Amsteg (the {{convert|11.3|km|mi|1|abbr=on}} section from Amsteg to north of [[Sedrun]]), ARGE AGN ([[Strabag]] and Züblin Murer) received the contract for work in this sector.<ref name="agn">{{cite web |url= http://www.agn-amsteg.ch/baulos-amsteg/projektbeschrieb.html |title= Projektbeschrieb |publisher= AGN Strabag |date= 24 September 2010 |access-date= 19 October 2010 |language= de |archive-url= https://web.archive.org/web/20141008175608/http://www.agn-amsteg.ch/baulos-amsteg/projektbeschrieb.html |archive-date= 8 October 2014 |url-status= dead }}</ref> On 9 December 2009, the Amsteg section was officially delivered to the owner for fitting-out,<ref name="neat.ch">{{cite web |url=http://www.alptransit-portal.ch/en/media/press-releases/tunnelroehren-des-abschnitts-amsteg-im-rohbau-uebergeben-283.html?cHash=08041d305a4bf933d5913043b9c1cee0 |title=Structurally complete tunnels of the Amsteg section handed over |publisher=AlpTransit Gotthard AG |location=Lucerne, Switzerland |date=10 December 2009 |access-date=12 November 2011 }}{{Dead link|date=June 2024 |bot=InternetArchiveBot |fix-attempted=yes }}</ref> with civil engineering, construction, concrete and lining work completed in early 2010.<ref name="ReferenceA">{{cite web |url=http://www.alptransit-portal.ch/en/media/press-releases/gotthard-vor-hauptdurchschlag-hauptvortrieb-am-ceneri-288.html?cHash=5bf551d1688835a7142c5aa6f1e8e37c |title=Gotthard approaches final breakthrough, Ceneri starts main drive |publisher=AlpTransit Gotthard AG |location=Lucerne, Switzerland |date=31 March 2010 |access-date=12 November 2011 }}{{Dead link|date=June 2024 |bot=InternetArchiveBot |fix-attempted=yes }}</ref>
* Sedrun (the {{convert|8.6|km|mi|1|abbr=on}} East tube and {{convert|8.7|km|mi|1|abbr=on}} West tube in the section immediately north and south of Sedrun), along with work performed by Transco ([[Bilfinger SE]], [[Implenia]], [[Frutiger (company)|Frutiger]] and [[Impresa Pizzarotti]]).<ref name="transco">{{cite web|url=http://www.transco-sedrun.ch/1_DEU_HTML.htm |title=Transco Sedrun |publisher=Transco |language=de |access-date=15 October 2010 |url-status=dead |archive-url=https://web.archive.org/web/20100529224525/http://www.transco-sedrun.ch/1_DEU_HTML.htm |archive-date=29 May 2010 }}</ref><ref name="transconce">{{cite magazine | url = http://www.nce.co.uk/features/geotechnical/gotthard-a-titanic-tunnel/5217000.article | title = Gotthard: A titanic tunnel | magazine = New Civil Engineer | publisher = EMAP Publishing Limited | date = 29 April 2010 | first = Martina | last = Booth | access-date = 15 July 2015}}</ref> The final breakthrough in the west tube occurred in March 2011.<ref name="serunfinal">{{cite web |url=http://www.alptransit-portal.ch/en/media/press-releases/hauptdurchschlag-im-laengsten-eisenbahntunnel-der-welt-303.html?cHash=b99fdea861735d62090812c2c22a7185 |title=Final breakthrough of the longest railway tunnel in the world |publisher=AlpTransit Gotthard AG |location=Lucerne, Switzerland |date=15 October 2011 |access-date=12 November 2011 }}{{Dead link|date=June 2024 |bot=InternetArchiveBot |fix-attempted=yes }}</ref> The northbound tubes from Amsteg to the Sedrun multifunction station (north) were handed over to the railway systems contractor Transtec Gotthard on 15 September 2011, the date specified in the construction schedule.<ref name="TranstecGotthard">{{cite web |url=http://www.alptransit-portal.ch/en/media/press-releases/der-einbau-der-bahntechnik-im-norden-hat-begonnen-736.html?cHash=f6c5d662a753c9bf3ad0c0be1f7ea816 |title=Installation of the railway systems in the north has begun |publisher=AlpTransit Gotthard AG |location=Lucerne, Switzerland |date=2 September 2011 |access-date=12 November 2011 }}{{Dead link|date=June 2024 |bot=InternetArchiveBot |fix-attempted=yes }}</ref>
* [[Faido]] ({{convert|13.4|km|mi|1|abbr=on}} East tube and {{convert|13.6|km|mi|1|abbr=on}} West tube in the section from south of Sedrun to Faido), with Consorzio TAT (Alpine Mayreder Bau, CSC Impresa costruzioni, [[Hochtief]] and [[Implenia]] and [[Impregilo]]).<ref name="TAT">{{cite web|url=http://www.tat-ti.ch/ |title=St. Barbara Celebration 2012 |publisher=Consorzio TAT |language=de |access-date=11 April 2013 |url-status=dead |archive-url=https://web.archive.org/web/20120913020852/http://www.tat-ti.ch/ |archive-date=13 September 2012}}</ref>
* [[Bodio]] ({{convert|15.9|km|mi|1|abbr=on}} East tube and {{convert|15.6|km|mi|1|abbr=on}} West tube in the section from Faido to Bodio), with work performed by Consorzio TAT (Alpine Mayreder Bau, CSC Impresa costruzioni, Hochtief, Implenia and Impregilo).<ref name="TAT" /> Civil engineering construction, concrete and lining works were completed in early 2010.<ref name="ReferenceA"/>