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Bjorøy Tunnel

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383:, which became the first subsea tunnel in Norway when it opened in 1982. He had a meeting at his place on 18 December 1980, to which the three municipal councilors from Bjorøy also were invited, where he tried to get support for the tunnel, which would be the topic of a municipal council meeting on 20 December. The council unanimously voted in favour of establishing a committee to look into the tunnel. The committee was established on 6 January 1981 and concluded that there were three alternative possibilities to build a fixed link to Bjorøy: a bridge from the island over Søre Steinsundet via Vestre Steinsundholmen, Kjerringholmen and Kaggen to Søre Snekkevik on Litlesotra; a tunnel under Vatlestraumen to Håkonshella; or a bridge over Vatlestraumen to Håkonshella or Kongshaug. 537:
to Tyssøy were estimated at NOK 5 million. The issue was not resolved when the construction of the tunnel started. The original costs for the bridge were for NOK 11.4 million, including a 20-metre-long (66 ft) bridge with a clearance of 10 meters (33 ft). This was later reduced to 10 metres (33 ft) length and 5 meters (16 ft), which reduced the costs to NOK 9.4 million. Of this, the county paid NOK 4 million, while the two municipalities had advanced the transporting earthwork from the tunnel to the sound. On 22 January 1996, the tunnel company agreed to advance the construction costs and collect it from the tolls, with
426:, and cooperation was started with the Norwegian Public Roads Administration to find a suitable connection to Tyssøy, so that they could also take advantage of the tunnel. To connect the two islands, it was chosen to build across Nautasundet, which was shallow and 175 metres (574 ft) wide. In 1987, Kaare Hartman joined the committee and proposed that the tunnel be built with borrowed money, guaranteed by land-owners on the islands, and repaid using tolls. At the time the project was not on any prioritized investment list, and this way the project was not dependent on public grants. On 7 September 1987, Hartmann reached agreement with 29: 500:
the county paying the rest of the costs. The construction would be the responsibility of Hordaland Public Roads Administration, with the tunnel company only responsible for their part of the financing and the collection of tolls. An agreement was made with Selmer, whereby they would charge NOK 59,422,500 and take the risk of the project, including any expenditures for unknown geological conditions or similar costs increases. They were also responsible for an insurance to reclaim the investments should it prove impossible to build the tunnel.
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ferry. With a manual system, it would not be possible to charge for two-wheeled vehicles and passengers, so the fares for other vehicles were raised slightly. In 1995, it had cost NOK 44 for a single passing with a car on the ferry. The tolls were set to NOK 120 for all types of vehicles, except two-wheelers, and NOK 72 was charged per travel with pre-paid ticket books. Bus riders had to pay for two extra zones. The toll plaza was open a few hour each week to allow people to purchase discounted tickets.
363: 509:"common problems" when building tunnels, but that construction would be delayed by up to two weeks. To keep up with the schedule, the company started also blasting from the mainland. However, the problems increased, and by September the tunnel was leaking 600 liters (130 imp gal; 160 U.S. gal) per minute, which was 50% more than estimated. This caused extra work to be done on the exterior to the tunnel, and costs had increased by several tens of millions of 1978: 1329: 475:
that the existing development plans permitted the construction, and that the noise would not exceed the permitted limits. They concluded that should these demands remain, the increased costs would terminate the project. On 16 November 1992, Bergen City Council voted to allow the tunnel, under the condition that the tunnel project financed a new football field. The decision was appealed by lawyers representing the local community, but this was rejected by
496:, who must approve all toll roads. By then the costs were estimated at NOK 61.5 million, including NOK 4.5 million in ordinary county grants and NOK 30 million in extraordinary county grants. The proposal estimated annual toll collection costs to NOK 825,000, with the collection taking place at Bjorøy. It was originally planned that the toll plaza would be staffed between 06:00 and 22:00, meaning passing would be free at night. 1343: 588:
during the work period. The project was highly controversial amongst the islanders and the plans were approved by only a single decisive vote in the municipal council. Islanders were especially concerned that the work might damage the tunnel. Calculations conducted by the Coastal Administration conclude that there is no chance of this occurring, as the blasting is taking place 65 meters (213 ft) above the tunnel.
445:. Public grants were also secured, so the debt would be NOK 27 to 30 million. The planning was done by Chr. F. Grøner, for which the municipality paid the costs. Statistics from the ferry showed that 26,400 cars and 93,902 people had taken it in 1986, which had grown to 40,400 and 121,000 in 1989. The estimates were for a 90% increase until 2000, given an opening in 2002. A bid for the project was gathered from 564:, who wanted NOK 8.5 million for the job. The link opened on 27 September 1997. In 2000, a public meeting was held in which it was proposed to reduce the rates and instead prolong the collection time, but this was rejected. In 1999, the Norwegian Public Roads Administration reported that the Bjorøy Tunnel had the cheapest administration costs per passing, at 7.32  521:
technical committee was established, and on 16 December they recommended the use of cement injection combined with a ring of drainage holes around the tunnel before blasting. The method was to be continually tested, and if it was insufficient, freezing could be used. As the tunnel advanced, the hole was to be continuously secured using
528:, self-boring bolts, steel ribs and full pouring. Work was taken up after a meeting on 27 March 1995, and on 16 August the final blast was made. Representatives from Selmer stated that the method they had chosen had resulted in international interest for the tunnel, and they had demonstrated it to several international delegations. 536:
The grants were only given for the tunnel to Bjorøy, and not for the necessary roads that would connect Tyssøy to Bjorøy. This caused local controversy, as some people on Bjorøy disagreed that the tolls on the Bjorøy Tunnel should pay for the Tyssøy Bridge. On 13 May 1993, the costs of the connection
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Bjorøy og Tyssøy ANS had been established with capital from locals, but instead the company Fastlandssambandet Bjorøy – Tyssøy AS was established on 29 September 1993. Capital for NOK 40,000 was paid by Fjell Municipality, NOK 20,000 by Sund Municipality and NOK 10,000 by Jack Jahnsen.
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for the islands of Bjorøy and Tyssøy (Tyssøy is connected to Bjorøy by a bridge). The tunnel is 2,012 metres (6,601 ft) long and reaches 88 m (289 ft) below mean sea level. The maximum gradient is 10 degrees (about 18% grade). It is one of few tunnels in Norway without mobile telephone
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The construction of the tunnel started on 29 September 1993, with the original plans calling for the tunnel to open on 15 June 1995. The original construction consisted of blasting from Bjorøy, but by January 1994 there were problems with water leaks through cracks. The contractor described these as
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demanded that the costs of a new field be paid for by the project, and that the tunnel be slightly extended. A new estimate was made, which increased the price by NOK 10.3 million; however, Hordaland Public Roads Administration protested, stating that it would give an inferior road technically,
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automatic toll collection system. A manual collection system was estimated to cost NOK 1.4 million per year, while an automated system was estimated at NOK 0.4 million. The tunnel opened on 7 May 1996, the same day the last ferry ran. Originally the plan was to charge tolls similar to the
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An agreement was made between the ministry, the tunnel company and the county municipality on 6 January 1994 to build the tunnel. The company had the right to collect tolls for up to 15 years on fees dictated by the county municipality, and would have to pay NOK 27 million for the tunnel, with
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for a car and an investment cost of NOK 47 million. The plans were at first nearly discarded by the administration, as they felt it was impossible for a community of 400 people to finance such a large project without other grants. However, it became evident that the administration was spending
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tests conducted in August 1983 concluded that the ground had good conditions: the uncompacted material laid mostly only 1-meter (3 ft 3 in) deep, albeit at times as deep as 7 meters (23 ft). The proposed tunnel crossing followed a mountain ridge, and the maximum depth was between 40
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On a meeting on 10 October, O. T. Blindheim, a geological consulting company, and Selmer presented three alternatives: continued injection of cement, recommended by Blindheim; freezing, recommended by Selmer because it was the cheapest, but would take more time; and use of a water-tight shield. A
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On 30 September, Selmer stopped construction from the Bjorøy side, although it continued from the mainland. About 750 metres (2,460 ft) from the Bjorøy side, the construction found a section of sandstone, the upper Jurassic Bjorøy formation, a condition that had never been encountered during
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started in May 2012 to blast away the bank, increasing the depth from 9 to 14 meters (30 to 46 ft). This allows the sailing width though Vatlestraumen to increase by 250 meters (820 ft). The work required the tarp covering the tunnel to be removed, causing increased leaks in the tunnel
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NOK 2 million per year on the ferry service, and as the ferry soon would have to be replaced, this would increase to NOK 3 to 5 million per year. On 1 October 1990, the issue was considered by Hordaland Transport Board, which approved the plans. This was followed up by
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The plans were met with criticism from locals on the Bergen side where the tunnel would emerge. They stated that the plans had "cheap solutions" and had unnecessary negative impact on their local environment. This included the demolishing of a football field and lack of
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in October 1992, who started working on a proposal for parliament in January 1993. Issues raised by the ministry were that the loans had been issued in 1987, and whether the land estimated value of the guaranteed real estate was real. The project was presented to the
441:. Four land-owners made a guarantee for NOK 9 million, with a judicial registration covering an area of 347 hectares (860 acres). They hoped that the value of their land would increase after the tunnel had been built. The same amount was also guaranteed by 517:
subsea tunnel construction before. Geological engineers stated that there was no known solution to overcoming the problem, and that if the contractor had blasted into the area, the tunnel would have been filled with sand and water within minutes.
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On 12 December 1989, the committee sent an official offer to Hordaland Public Roads Administration whereby they, as a company under establishment, offered to fully finance the tunnel. The plans called for tolls of
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The Bjorøy Tunnel is a subsea tunnel which runs below the Vatlestraumen strait between the island of Bjorøy and the mainland of Bergen. It carries two lanes of Norwegian County Road 5236. It is the only
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owners who vacation on the islands. The first proposal was launched in 1980, and construction started on 29 September 1993. There were severe problems because the tunneling encountered an area of
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Before the construction of the Bjorøy Tunnel, the geology of the area was thought to consist entirely of metamorphic basement rocks similar to those exposed on the surrounding islands. The
376: 513:. In particular, a different type of rock had been struck, and 60 tonnes (59 long tons; 66 short tons) of concrete had been injected without this giving the desired effects. 242: 446: 1583: 462:
on 19 June 1991, which involved NOK 27 million being financed by debt and NOK 28 to 33 million being financed through reduced subsidies to the ferry.
1942: 1302: 427: 1947: 379:. The plans for a tunnel to Bjorøy were first launched by the engineer Jack Jahnsen in 1980. These were based on the then under construction 2,890-metre 1767: 2012: 1952: 1937: 1907: 1832: 1696: 1397: 549: 1927: 1922: 1867: 1762: 1727: 488: 423: 1777: 1752: 1259: 254: 1892: 1827: 266: 1912: 568:, of all small toll companies. The tolls were removed on 29 January 2005, after eight years and eight months, almost half the stipulated time. 1882: 437:
However, Norges Skibshypotek had to withdraw, as it was not permitted to invest in non-shipping investments. Instead, a loan was taken in
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of Revskolt in Vatlestraumen, located above the tunnel. The accident cost 18 people their lives and was the most extensive and costly
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age (Late Jurassic) for the sequence. The sedimentary rocks appear to have been deposited into an eroded depression caused by a
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and a sandstone with coal fragments, some of which was quite unconsolidated. Spore and pollen samples gave an
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The contract for the construction of the bridge to Tyssøy was announced on 20 August 1996, and was won by
1563: 1269: 1663: 398:. All three included a road connection to Tyssøy, with the bridge proposals costing 16 million  522: 476: 459: 28: 2022: 331: 449:, which gave a maximum price of NOK 55 million, given that construction started in 1989. 415:
and 45 metres (131 and 148 ft), although the topography went steep down to those depths.
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coverage, although there are emergency telephones that connect to the operation center of the
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in Norwegian history. In an attempt to avoid similar incidents occurring again, the
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At the time, a bridge to Litlesotra was estimated to cost 111 million 
362: 671:"Mesozoic sediments and structures onshore Norway and in the coastal zone" 402:
for the Tyssøy connection, and the tunnel having a cost of 4 million 
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Pedersen, Frode (19 August 2003). "Tunneler bryter nye EU-krav".
327: 282: 1713: 561: 471: 335: 262: 238: 52: 48: 1361:(in Norwegian). Straume: Fastlandssambandet Tyssøy – Bjorøy. 544:
On 2 February 1996, the tunnel company had an agreement with
442: 1704: 188: 434:. The bank had a guarantee in the income from the tunnel. 609: 315:, and the tunnel will receive coverage with the future 1324: 649:
Styve, Kyrre (16 January 2010). "Vil ha mobilnett".
277:for the 900 residents of the islands of Bjorøy and 986: 984: 605:"Folk flytter fra øyene tross milliarder til bru" 390:, a tunnel was estimated to cost 36 million  2051: 668: 981: 552:, to collect the tolls in the tunnel using the 269:strait, reaching 88 metres (289 ft) below 1690: 1391: 326:sediments encountered in the tunnel included 1405: 531: 1697: 1683: 1398: 1384: 375:Since 1966, Bjorøy had been served by the 346:, which later reactivated, disrupting the 293:. It opened on 7 May 1996 and remained a 27: 669:Bøe, R.; Fossen, H.; Smelror, M. (2010). 631: 489:Ministry of Transport and Communications 430:to borrow the estimated 50 million  424:Minister of Transport and Communications 361: 229:) is a 2,012-metre-long (6,601 ft) 1356: 1257: 1245: 1233: 1221: 1209: 1197: 1185: 1173: 1161: 1149: 1137: 1125: 1113: 1101: 1089: 1077: 1065: 1053: 1041: 1029: 1017: 1005: 990: 975: 963: 951: 939: 927: 915: 903: 891: 879: 867: 852: 840: 828: 813: 801: 789: 777: 765: 750: 738: 726: 714: 702: 678:Norges geologiske undersøkelse Bulletin 565: 454: 431: 403: 399: 395: 391: 387: 290: 2052: 1001: 999: 863: 861: 824: 822: 761: 759: 366:Map of Bjorøy and the surrounding area 16:Subsea road tunnel in Vestland, Norway 1678: 1379: 1359:Fastlandssamband for Bjorøy og Tyssøy 1290: 664: 662: 648: 571:On 19 January 2004, the freight ship 313:Norwegian Public Roads Administration 157:Norwegian Public Roads Administration 1293:"Sjøvann renner rett ned i veibanen" 996: 858: 819: 756: 13: 1258:Kalgraf, Marit (21 January 2005). 659: 14: 2101: 1291:Holte, Magnus Aamo (8 May 2012). 300: 1976: 1341: 1327: 1305:from the original on 10 May 2012 585:Norwegian Coastal Administration 1284: 1251: 1239: 1227: 1215: 1203: 1191: 1179: 1167: 1155: 1143: 1131: 1119: 1107: 1095: 1083: 1071: 1059: 1047: 1035: 1023: 1011: 969: 957: 945: 933: 921: 909: 897: 885: 873: 846: 834: 807: 795: 783: 771: 503: 334:in contact with the underlying 1268:(in Norwegian). Archived from 744: 732: 720: 708: 696: 642: 625: 597: 523:carbon fibre-reinforced carbon 184: 1: 2080:1996 establishments in Norway 591: 317:Norwegian Public Safety Radio 281:as well as a large number of 265:. It crosses underneath the 245:which connects the island of 241:. The tunnel is part of the 575:ran aground on the unmarked 418:The plans were presented to 261:in the city-municipality of 179:2,012 m (6,601 ft) 7: 541:guaranteeing for the debt. 487:The plans were sent to the 370: 10: 2106: 655:(in Norwegian). p. 5. 638:(in Norwegian). p. 3. 357: 243:Norwegian County Road 5236 2085:Tunnels completed in 1996 2031: 1985: 1974: 1720: 1623: 1607: 1413: 1260:"Bom stopp for bompengar" 532:Tolls and auxiliary roads 477:Hordaland County Governor 205: 201:−88 m (−289 ft) 197: 183: 175: 170: 162: 152: 144: 136: 131: 121: 113: 105: 97: 58: 40: 35: 26: 2065:Road tunnels in Vestland 2060:Subsea tunnels in Norway 1407:Subsea tunnels in Norway 562:NCC Eeg-Henriksen Anlegg 460:Hordaland County Council 546:Bru og Tunnelskelskapet 377:Alvøen–Bjorøyhamn Ferry 297:until 29 January 2005. 249:in the municipality of 2070:Road tunnels in Bergen 1357:Jahnsen, Jack (2006). 367: 226: 548:, which operates the 439:Bergens Skillingsbank 410:with a short bridge. 365: 253:to the mainland near 166:Until 29 January 2005 1636:Hordaland Fixed Link 494:Parliament of Norway 82:60.33750°N 5.18417°E 2090:Former toll tunnels 1615:Rogaland Fixed Link 479:on 30 August 1993. 472:Bergen Municipality 428:Norges Skibshypotek 78: /  23: 1608:Under construction 1272:on 15 January 2011 443:Fjell Municipality 368: 350:and causing steep 231:subsea road tunnel 21: 2047: 2046: 1672: 1671: 539:Sund Municipality 484:unlimited company 447:Selmer–Furuholmen 420:Johan J. Jakobsen 273:. 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Retrieved 1296: 1286: 1274:. Retrieved 1270:the original 1263: 1253: 1248:, p. 81 1246:Jahnsen 2006 1241: 1236:, p. 76 1234:Jahnsen 2006 1229: 1224:, p. 75 1222:Jahnsen 2006 1217: 1212:, p. 88 1210:Jahnsen 2006 1205: 1200:, p. 87 1198:Jahnsen 2006 1193: 1188:, p. 86 1186:Jahnsen 2006 1181: 1176:, p. 72 1174:Jahnsen 2006 1169: 1164:, p. 69 1162:Jahnsen 2006 1157: 1152:, p. 71 1150:Jahnsen 2006 1145: 1140:, p. 70 1138:Jahnsen 2006 1133: 1128:, p. 46 1126:Jahnsen 2006 1121: 1116:, p. 45 1114:Jahnsen 2006 1109: 1104:, p. 64 1102:Jahnsen 2006 1097: 1092:, p. 63 1090:Jahnsen 2006 1085: 1080:, p. 62 1078:Jahnsen 2006 1073: 1068:, p. 61 1066:Jahnsen 2006 1061: 1056:, p. 60 1054:Jahnsen 2006 1049: 1044:, p. 58 1042:Jahnsen 2006 1037: 1032:, p. 57 1030:Jahnsen 2006 1025: 1020:, p. 56 1018:Jahnsen 2006 1013: 1008:, p. 52 1006:Jahnsen 2006 993:, p. 48 991:Jahnsen 2006 978:, p. 50 976:Jahnsen 2006 971: 966:, p. 51 964:Jahnsen 2006 959: 954:, p. 41 952:Jahnsen 2006 947: 942:, p. 39 940:Jahnsen 2006 935: 930:, p. 43 928:Jahnsen 2006 923: 918:, p. 42 916:Jahnsen 2006 911: 906:, p. 38 904:Jahnsen 2006 899: 894:, p. 36 892:Jahnsen 2006 887: 882:, p. 35 880:Jahnsen 2006 875: 870:, p. 34 868:Jahnsen 2006 855:, p. 33 853:Jahnsen 2006 848: 843:, p. 29 841:Jahnsen 2006 836: 831:, p. 30 829:Jahnsen 2006 816:, p. 31 814:Jahnsen 2006 809: 804:, p. 28 802:Jahnsen 2006 797: 792:, p. 27 790:Jahnsen 2006 785: 780:, p. 26 778:Jahnsen 2006 773: 768:, p. 25 766:Jahnsen 2006 753:, p. 24 751:Jahnsen 2006 746: 739:Jahnsen 2006 734: 729:, p. 22 727:Jahnsen 2006 722: 717:, p. 21 715:Jahnsen 2006 710: 705:, p. 17 703:Jahnsen 2006 698: 686:. 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Retrieved 608: 599: 572: 570: 559: 545: 543: 535: 519: 515: 507: 504:Construction 498: 481: 464: 451: 436: 417: 385: 381:Vardø Tunnel 374: 332:conglomerate 321: 304: 218: 216: 18: 2039:Old Dyrskar 1933:Stongafjell 1918:Skatestraum 1733:Austmannali 1646:Moss–Horten 1589:Tromsøysund 1584:Sløverfjord 1569:Skatestraum 1549:Nordøyvegen 1531:Mastrafjord 635:Aftenposten 255:Håkonshella 117:Håkonshella 85: / 60:Coordinates 2054:Categories 1998:Cross Link 1948:Trengereid 1858:Løvstakken 1798:Folgefonna 1748:Bømlafjord 1631:Cross Link 1554:North Cape 1544:Nappstraum 1540:Melkøysund 1461:Fannefjord 1446:Bømlafjord 1276:15 January 688:18 January 592:References 412:Seismology 344:fault zone 308:fixed link 275:fixed link 148:7 May 1996 137:Work begun 70:60°20′15″N 2013:Korsfjord 2003:Fedjefast 1968:Åkrafjord 1953:Trollkone 1938:Storegjel 1908:Seljestad 1898:Rullestad 1833:Jernfjell 1793:Fløyfjell 1641:Langfjord 1559:Oslofjord 1476:Freifjord 1471:Flekkerøy 1456:Ellingsøy 581:oil spill 340:Oxfordian 295:toll road 287:sandstone 223:Norwegian 171:Technical 132:Operation 73:5°11′03″E 2075:Øygarden 2008:Hordfast 1986:Proposed 1963:Vallavik 1958:Tunsberg 1928:Stavenes 1923:Stalheim 1878:Naustdal 1868:Masfjord 1808:Gudvanga 1788:Fjærland 1763:Eidfjord 1758:Damsgård 1728:Arnanipa 1712:county, 1710:Vestland 1624:Proposed 1594:Valderøy 1536:Maursund 1526:Kvalsund 1436:Bjørvika 1303:Archived 1265:VestNytt 652:VestNytt 554:Autopass 453:51  371:Planning 336:gneisses 324:Jurassic 259:Hilleren 251:Øygarden 237:county, 235:Vestland 153:Operator 45:Øygarden 41:Location 36:Overview 2023:Skansen 1863:Markhus 1818:Haukeli 1813:Halsnøy 1773:Eikefet 1768:Eidsvåg 1753:Dalseid 1721:Current 1659:Sundsøy 1579:Ryfylke 1564:Skansen 1511:Ibestad 1501:Hundvåg 1491:Halsnøy 1451:Eiksund 1441:Byfjord 1426:Bjarkøy 1414:Current 684:: 15–32 617:9 April 573:Rocknes 358:History 348:bedding 328:breccia 283:cottage 109:Fv 5236 2032:Closed 2018:Nyborg 1903:Røldal 1893:Risnes 1888:Olsvik 1853:Lærdal 1843:Knappe 1838:Jondal 1828:Hyving 1803:Frudal 1743:Bortne 1738:Bjorøy 1714:Norway 1521:Knappe 1516:Karmøy 1506:Hvaler 1466:Finnøy 1431:Bjorøy 1365:  1309:11 May 526:gunite 511:kroner 279:Tyssøy 263:Bergen 247:Bjorøy 239:Norway 176:Length 145:Opened 126:Bjorøy 101:In use 98:Status 53:Norway 49:Bergen 1913:Sivle 1823:Horda 1783:Fjæra 1778:Eikås 1654:Sotra 1599:Vardø 1496:Hitra 1486:Godøy 1481:Frøya 674:(PDF) 207:Grade 189:lanes 114:Start 106:Route 1993:Arna 1883:Nipe 1873:Måbø 1363:ISBN 1311:2012 1278:2011 690:2011 619:2013 408:mole 352:dips 330:and 257:and 217:The 163:Toll 47:and 1708:in 1574:Rya 682:450 610:NRK 233:in 211:18% 187:of 185:No. 122:End 2056:: 1295:. 1262:. 998:^ 983:^ 860:^ 821:^ 758:^ 680:. 676:. 661:^ 607:. 566:kr 470:. 455:kr 432:kr 422:, 404:kr 400:kr 396:kr 392:kr 388:kr 354:. 319:. 291:kr 225:: 51:, 1698:e 1691:t 1684:v 1399:e 1392:t 1385:v 1371:. 1313:. 1280:. 692:. 621:. 221:( 193:2

Index


Øygarden
Bergen
Norway
Coordinates
60°20′15″N 5°11′03″E / 60.33750°N 5.18417°E / 60.33750; 5.18417
Bjorøy
Norwegian Public Roads Administration
lanes
Grade
Norwegian
subsea road tunnel
Vestland
Norway
Norwegian County Road 5236
Bjorøy
Øygarden
Håkonshella
Hilleren
Bergen
Vatlestraumen
mean sea level
fixed link
Tyssøy
cottage
sandstone
toll road
fixed link
Norwegian Public Roads Administration
Norwegian Public Safety Radio

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