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A popular game amongst local children, and some adults, is attempting to hold one's breath for the duration of the journey by motorized vehicle through the Clyde Tunnel. This is possible due to the short length of the tunnel – a car travelling at the 30 mph (50 km/h) limit takes 57 seconds
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The estimate for traffic levels in the tunnel was between 9,000 and 13,000 vehicles per day during construction; on the first day of opening, 22,000 vehicles used the tunnel. Current estimates for traffic levels are around 65,000 vehicles per day. These unanticipated high volumes of traffic have
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The techniques for decompression after a period of working in a high pressure atmosphere had not been perfected at this time and – also owing to the prevalence of workers refusing to go through the decompression sequence given the length of time required (around an hour) – there were a number of
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approaching 6% or 1:16. The width of the river at this point is 123 metres (404 ft). Each road tunnel carries two lanes of traffic as part of the A739 road, and are completely separate except for a very small crossover passage between the road tunnels at the
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increased the wear rate for the tunnel, causing it to close repeatedly for repair and renovation work, which has disrupted traffic in the area for over a decade, and has arguably led to the increase in traffic causing similar problems on the
Kingston Bridge.
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having been built in the 1890s. However, the Clyde Tunnel project was to be built in the boom of the car era and would be a much larger project. It was given the green light in 1948 but financial difficulties prevented work from beginning until 1957.
415:. Work began in March 2005 and was scheduled to last until at least April 2006, with one of the tunnels closed during off-peak hours (19:00 to 07:00 daily). However, problems that were encountered meant the work was only completed in 2010.
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a century earlier, used to dig the two tunnels. The tunnels were cut perfectly circular with the road deck sitting a third of the way up. Under each road deck is the pedestrian/cycle tunnel and ventilation ducts. 16
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diagnosed as a result, resulting in two fatalities. Work on the tunnel was halted for a time after an explosion when compressed air escaped through the tunnel lining into the river, flushing outward in a fountain.
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The more recent repairs, costing as much as the initial outlay for construction, involved installing a second, modern, fireproof layer, enabling the tunnel to meet
European safety standards after St Gotthard and
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to pass through. Success is hampered by snarl-ups (particularly at the interchange on the north end) slowing traffic. The breath-holding game was the subject of
Scottish artist
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Both tunnels are open to pedestrians in both directions. The eastern tunnel is open to cyclists going southbound, and the western tunnel to cyclists going northbound. In 2008,
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environment to ensure that the rock and the river above did not collapse into the tunneling area. The digging itself would be done only with great difficulty due to the
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374:(barely large enough for a single pedestrian). They are monitored and controlled from the two Portal towers, one at each end of the tunnel, where
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10 million. (equivalent to £304,530,000 in 2023). By this time, the migration of port facilities downstream to the deeper waters of the
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monitors the entirety of the tunnel. Beneath the road tunnel decks run foot and cycle tunnels; and below those, the tunnels' services.
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569:"Compressed air tunneling and caisson work decompression procedures: development, problems, and solutions"
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on 3 July 1963, with the southbound tunnel opening in March 1964. The total cost of the project was
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secure entry systems were installed at the portals of these tunnels in order to reduce crime and
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removed as part of a beautification project, but it was often redone soon after being removed.
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technology had allowed the consideration of bridges downstream of the city centre, namely the
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experience to travel through the tunnel. The pedestrian tunnel also had its years of
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275:. The solution — to build a tunnel beneath the river — was not a new one, with the
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were hit by the problem of crossing the Clyde. Downstream of
Jamaica Street in the
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The roadworks coincided with the "Hold Your Breath" project which aimed to add an
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The first completed tunnel tube, for northbound traffic, was eventually opened by
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653:"The Annual RPI and Average Earnings for Britain, 1209 to Present (New Series)"
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708:. Breath holding within the tunnel is still popular to this day.(2017)
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North entrance to one of the cyclist and pedestrian tunnels (east)
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490:"Road Restriction: Height Restriction - Traffic Scotland Mobile"
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Efforts to improve the transport infrastructure of
Glasgow post-
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The road tunnels are each 762 metres (2,500 feet) long with a
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Road and pedestrian crossings built beneath the River Clyde
516:"No Toll on the Clyde Tunnel. Difficulties of Collection"
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for road traffic, cyclists and pedestrians. Two parallel
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Glasgow
Motorway Archive - Clyde Tunnel and Approaches
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762 m (2,500 ft) (northbound and southbound)
353:and, much further downstream than the Tunnel, the
33:The south portal of the Clyde Tunnel at Linthouse
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411:, along with new air extraction systems and new
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587:. Archived from the original on 11 August 2011
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621:"The Clyde Tunnel. An Eight-page Supplement"
317:of the area, hard rock sitting under a soft
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649:inflation figures are based on data from
309:operated the shield working shifts in a
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1328:South Portland Street Suspension Bridge
492:. M.trafficscotland.org. Archived from
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251:to the south in the west of the city.
1538:Cycling tunnels in the United Kingdom
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468:"Clyde Tunnel - Glasgow City Council"
1406:Longest rivers of the United Kingdom
747:on the Glasgow City Council website
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1533:Road tunnels in the United Kingdom
544:. Hold Your Breath. Archived from
209:17 ft 6 in (5.3 m)
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1218:David Livingstone Memorial Bridge
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292:Construction began in 1957, with
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1208:East Kilbride Expressway Bridge
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1338:Caledonian Railway Bridge
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1103:Elvanfoot Motorway Bridge
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605:: CS1 maint: unfit URL (
522:. 2 March 1960. p. 1
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627:. 4 July 1963. p. 9
651:Clark, Gregory (2017).
443:, for which he won the
409:Mont Blanc tunnel fires
300:'s design used for the
1253:Bogleshole Road Bridge
327:decompression sickness
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1283:Shawfield Smartbridge
1223:Uddingston Footbridge
735:at Wikimedia Commons
680:"Clyde Tunnel vision"
392:anti-social behaviour
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1508:Transport in Glasgow
1373:Govan–Partick Bridge
1308:Pipe Bridge and Weir
1263:Auchenshuggle Bridge
1178:Kirkfieldbank Bridge
802:Administrative areas
567:Kindwall EP (1997).
345:and improvements in
298:Marc Isambard Brunel
141:Glasgow City Council
97:55.86867°N 4.33115°W
1503:Tunnels in Scotland
1258:Clydebridge Viaduct
824:West Dunbartonshire
713:, 17 September 2000
573:Undersea Hyperb Med
447:art prize in 2000.
437:Roderick Buchanan's
93: /
23:
1228:Uddingston Viaduct
1128:Wandel Road Bridge
1058:North Calder Water
1053:South Calder Water
1028:South Medwyn River
1023:North Medwyn River
993:Major tributaries
647:Retail Price Index
625:The Glasgow Herald
542:"Hold Your Breath"
520:The Glasgow Herald
294:tunnelling shields
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172:Sir Alan Muir Wood
102:55.86867; -4.33115
44:Official name
21:
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1368:Millennium Bridge
1318:City Union Bridge
1288:Rutherglen Bridge
1273:Dalmarnock Bridge
1248:Cambuslang Bridge
1173:Clydesholm Bridge
1153:Thankerton Bridge
1138:Lamington Viaduct
1113:Camps Road Bridge
1098:Elvanfoot Viaduct
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814:North Lanarkshire
809:South Lanarkshire
745:Clyde Tunnel page
731:Media related to
711:The Sunday Herald
686:. 31 October 2008
247:to the north and
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1348:Tradeston Bridge
1243:Clydeford Bridge
1238:Westburn Viaduct
1233:Haughhead Bridge
1183:Crossford Bridge
1158:Pettinain Bridge
1148:Wolfclyde Bridge
1143:Lamington Bridge
1118:Crawford Viaduct
1108:Elvanfoot Bridge
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470:. Glasgow.gov.uk
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579:(4): 337–45.
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1203:Raith Bridge
1198:Clyde Bridge
1193:Camp Viaduct
1068:River Kelvin
1043:River Nethan
964:Port Glasgow
868:Settlements
829:Renfrewshire
819:Glasgow City
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733:Clyde Tunnel
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688:. Retrieved
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629:. Retrieved
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601:cite journal
589:. Retrieved
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546:the original
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494:the original
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472:. Retrieved
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335:Elizabeth II
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288:Construction
261:World War II
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225:Clyde Tunnel
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47:Clyde Tunnel
22:Clyde Tunnel
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1513:River Clyde
1078:River Leven
1038:Mouse Water
974:Helensburgh
791:River Clyde
631:18 December
526:18 December
398:Repair work
361:The tunnels
347:engineering
296:, based on
265:city centre
229:River Clyde
132:3 July 1963
100: /
75:Coordinates
56:River Clyde
1497:Categories
1428:Great Ouse
1073:River Cart
1048:Avon Water
1008:Daer Water
998:confluence
934:Rutherglen
929:Cambuslang
924:Uddingston
909:Motherwell
894:New Lanark
848:Flows into
834:Inverclyde
690:17 October
451:References
441:Gobstopper
281:Finnieston
85:55°52′07″N
1358:Clyde Arc
959:Dumbarton
949:Clydebank
889:Symington
879:Elvanfoot
325:cases of
245:Whiteinch
163:Technical
124:Operation
88:4°19′52″W
64:Whiteinch
60:Linthouse
969:Greenock
919:Bothwell
914:Hamilton
884:Abington
795:Scotland
591:11 March
424:graffiti
420:artistic
413:lighting
367:gradient
273:shipping
237:Scotland
137:Operator
116:part of
52:Location
39:Overview
1528:Partick
979:Gourock
944:Renfrew
939:Glasgow
857:, then
755:project
585:9444066
315:geology
255:History
233:Glasgow
176:Halcrow
147:Traffic
68:Glasgow
1418:Thames
1413:Severn
984:Dunoon
904:Wishaw
899:Lanark
583:
552:31 May
500:31 May
474:31 May
439:video
307:miners
269:bridge
241:tunnel
182:Length
150:65,000
129:Opened
1523:Govan
1462:Tweed
1457:Clyde
1423:Trent
664:7 May
372:nadir
249:Govan
195:lanes
113:Route
1477:Eden
1472:Nene
1467:Avon
1452:Spey
1442:Ouse
751:The
692:2020
666:2024
633:2016
607:link
593:2009
581:PMID
554:2014
528:2016
502:2014
476:2014
388:CCTV
376:CCTV
319:silt
223:The
158:Free
155:Toll
118:A739
62:and
1482:Dee
1447:Tay
1438:Ure
1433:Wye
645:UK
279:at
231:in
193:of
191:No.
174:of
66:in
1499::
793:,
682:.
655:.
623:.
603:}}
599:{{
577:24
575:.
571:.
518:.
459:^
357:.
235:,
58:,
1440:/
1000:)
783:e
776:t
769:v
694:.
668:.
635:.
609:)
595:.
556:.
530:.
504:.
478:.
339:£
199:4
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