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to ensure safety before the bridge construction started. The deck of the bridge consists of reinforced concrete grillage supported by a pair of abutments and longitudinal reinforced concrete girders. Since there is an intermittent watercourse through the cavern, the tunnel tube was sealed to protect
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During construction, a 83-metre (272 ft) by 63-metre (207 ft) by 45-metre (148 ft) cavern was discovered intersecting the northbound tunnel tube 139 metres (456 ft) away from the eastern tunnel portal. The cavern is located 16 metres (52 ft) away from originally executed,
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southbound Vrata Tunnel tube and reaches to within 20 metres (66 ft) of the ground surface. A 58-metre (190 ft) bridge was built over the cavern, accounting for nearly one-quarter of the length of the tunnel. The surrounding rock was stabilized using
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the cavern and water flowing through it. This was achieved by construction of a concrete structure covering the bridge deck, hiding the cavern from the motorway users and giving them impression of driving through an unbroken tunnel tube.
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152:. The tunnel was originally designed to be 325 metres (1,066 ft) long, but it was shortened due to the landslide on the western portal in the zone of contact between
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layers. The tunnel is noteworthy since it comprises a 58-metre (190 ft) bridge spanning a cavern found during excavation.
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route. It is only 257 metres (843 ft) long and consists of two tunnel tubes. It is located between
435:(in Croatian) (9). Croatian Association of Toll Motorways Concessionaires (HUKA): 5. December 2006
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393:[Water protection supporting sustainable development of Rijeka–Zagreb motorway]
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144:. There are no other toll plazas related to use of the tunnel. The tunnel was excavated by
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365:[Multitude of pits in Biokovo - two abysses found in Sveti Ilija Tunnel route].
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457:[The last tunnel on Rijeka - Zagreb motorway excavated] (in Croatian).
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resorts. The traffic count is performed using analysis of toll ticket sales.
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391:"Zaštita voda u funkciji održivog razvoja Autoceste Rijeka–Zagreb"
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329:[A bridge shall be built across a cavern in Vrata Tunnel]
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363:"Utroba Biokova puna jama - na trasi Sv. Ilije dvije "bezdanke""
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186:, operator of the A6 motorway and the tunnel, and published by
481:"Traffic counting on the roadways of Croatia in 2009 - digest"
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Buildings and structures in
Primorje-Gorski Kotar County
455:"Probijen i posljednji tunel autoceste Rijeka - Zagreb"
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327:"Kroz špilju u tunelu Vrata gradit će se most!"
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259:Between Vrata and Oštrovica interchanges.
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532:Transport in Primorje-Gorski Kotar County
190:. Substantial variations between annual (
296:"Tunnel "Vrata" - Zagreb-Rijeka highway"
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124:) is one of the shortest tunnels on the
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42:Location of Vrata Tunnel in Croatia
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325:Damir Herceg (October 6, 2006).
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361:Jakov Prkić (March 13, 2009).
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490:. May 1, 2010. Archived from
184:Autocesta Rijeka–Zagreb
150:New Austrian Tunneling method
142:closed toll collection system
427:[Vrata Tunnel cave]
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136:interchanges. The tunnel is
209:Vrata Tunnel traffic volume
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522:Road tunnels in Croatia
425:"Špilja u tunelu Vrata"
277:List of longest tunnels
140:within the A6 motorway
79:45.329114°N 14.607267°E
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405:(HUKA): 4. March 2009
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401:(in Croatian) (16).
171:geotechnical anchors
126:Croatian A6 motorway
84:45.329114; 14.607267
461:. February 16, 2008
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499:. Retrieved
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200:Kvarner Gulf
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114:Vrata Tunnel
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109:Vrata Tunnel
17:Vrata Tunnel
465:October 18,
439:October 18,
409:October 18,
375:October 12,
343:October 12,
305:October 12,
272:A6 motorway
122:Tunel Vrata
82: /
57:Coordinates
516:Categories
501:October 5,
283:References
70:14°36′26″E
67:45°19′45″N
158:carbonate
154:Paleozoic
130:Oštrovica
95:Route map
266:See also
118:Croatian
51:Overview
459:Nova TV
336:Vjesnik
300:Viadukt
256:20,891
253:12,413
146:Viadukt
196:Istria
148:using
138:tolled
495:(PDF)
484:(PDF)
429:(PDF)
395:(PDF)
331:(PDF)
236:Notes
134:Vrata
503:2010
467:2010
441:2010
411:2010
377:2010
345:2010
307:2010
231:ASDT
226:AADT
216:Road
198:and
192:AADT
156:and
132:and
247:A6
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Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.
