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{{Short description|Longest rail tunnel in Belgium}}
The '''Soumagne Tunnel''' is the longest rail tunnel in [[Belgium]], with a length of {{convert|6505|m|ft}}. Built on the [[HSL 3]] line of the Belgian [[TGV]] service for Brussels-Liège-Cologne, the tunnel was completed in 2004.<ref name="irj1">{{cite journal|title=Soumagne tunnel completed|date=November 2004|url=http://findarticles.com/p/articles/mi_m0BQQ/is_11_44/ai_n7586192/}}</ref> The new line was opened on 12 June 2009.<ref name="irj2">{{cite journal|title=Belgium opens high-speed line|date=July 2009|url=http://findarticles.com/p/articles/mi_m0BQQ/is_7_49/ai_n32173439/?tag=rel.res2/}}</ref> The tunnel links the Liège conurbation with the Herve plateau at a depth of {{convert|120|m|ft}}. Construction and outfitting of the tunnel took place from 2001 to 2005, with the first trains passing through in 2009. The entrances are at [[Vaux-sous-Chèvremont]] {{coord|50.6033968|5.6371021|display=inline,title|format=dms|type:landmark}} and [[Soumagne]] {{coord|50.6109955|5.7258296|display=inline|format=dms|type:landmark}}. The tunnel passes under [[Chaudfontaine]], [[Fléron]], [[Romsée]] and [[Ayeneux]].▼
{{Use mdy dates|date=November 2023}}
{{Infobox tunnel
| name = Soumagne Tunnel
| image = Tunnel vu Soumagne.jpg
| caption = Eastern tunnel portal near Soumagne
| line = [[HSL 3]]
| coordinates = {{Unbulleted list
| Vaux-sous-Chèvremont:
| {{coord|50.6033968|5.6371021|format=dms|type:landmark}}
| Soumagne:
| {{coord|50.6109955|5.7258296|format=dms|type:landmark}}
}}
| status = Active
| start = {{Interlanguage link|Vaux-sous-Chèvremont|fr}}, [[Liège]], Belgum
| end = [[Soumagne]], Liège, Belgum
| construction = 2001–{{Start date|2004}}
| opened = 12 June 2009
| owner = [[Infrabel]]
| traffic = [[High-speed rail]]
| linelength = {{Cvt|6505|m|mi}}
| notrack = [[Double-track railway|2]]
| gauge = {{Track gauge|sg|allk=on}}
| el = {{25 kV 50 Hz|conductor=overhead}}
| speed = {{cvt|200|km/h|mph}}
| grade = {{Unbulleted list
| 1.7% (average)
| 2% (maximum)
}}
}}
▲The '''Soumagne Tunnel''' is the longest rail tunnel in [[Belgium]], with a length of {{convert|6505|m|
The bored section is {{convert|5940|m|yd}}, extended by covered sections of respectively 177 and 388 m. Dozens of geological layers of differing hardness had to be tunnelled through, lime layers needing to be blasted through with dynamite. The tunnel reaches a depth of 127 m in some areas; it has an average ramp height of 1.7%, with a maximum of 2% at the entrance in Soumagne. The free space profile in the tunnel is approximately {{convert|69|m2|sqft|abbr=on}}, which restricts speeds to {{convert|200|km/h|mph|abbr=on}}.
== See also ==
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{{reflist}}
== External links ==
{{authority control}}
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