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Old December 11th, 2015, 03:42 PM   #3481
ChrisZwolle
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Ryfast, Stavanger

The deepest point of the Ryfylke Tunnel near Stavanger has been reached last night. It reaches 292 meters below sea level. Breakthrough is expected in 2017. The twin-tube tunnel is 14.3 kilometers long.



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Old December 16th, 2015, 09:01 PM   #3482
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E39 Sulafjord Bridge

A render of a possible suspension bridge across the Sulafjord near Hareid, not far from Ålesund. If built, it would be by far the longest suspension bridge in the world, the span would be around 2800 meters, which is considerably longer than the current record of 1991 m of the Akashi Kaikyō Bridge in Japan.



edit: possible design:
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Old December 16th, 2015, 10:51 PM   #3483
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A series of 360 panoramas from E6 Gudbrandsdal construction:

http://www.geo360.net/e6fryasjoa/
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Old December 17th, 2015, 07:25 PM   #3484
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E39 Sulafjord Bridge

Another alternative is a two-span suspension bridge with a 'gravity based structure' (GBS) in the middle. This would be a 2 x 2.060 meter main span (world record) and include a 745 meter tall pylon (several different heights are mentioned with this proposal).





Simply mind-boggling.
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Old December 18th, 2015, 04:03 PM   #3485
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E6, Nordland

Another big project is coming to E6 in northern Norway, a realignment north of Fauske. This will reduce driving distance by 11 km and driving time by 25 minutes. It could start in 2018.

A new suspension bridge is planned across the Leirfjord, with a main span of 820 meters, which would make it the fourth longest in Norway and 13th longest in Europe. Not as gigantic as the Sulafjord bridge discussed above, but impressive nonetheless.



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Old December 18th, 2015, 04:35 PM   #3486
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Wouldn't this render two recently (1990s) tunnels kinda useless?
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Old December 18th, 2015, 06:48 PM   #3487
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Quote:
Originally Posted by Suburbanist View Post
Wouldn't this render two recently (1990s) tunnels kinda useless?
Yes it would, still, that section, and its tunnels is of poor standard. Basically, most of E6 between Fauske and Narvik (250km) needs a larger upgrade as driving there is very slow.
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Old December 18th, 2015, 11:49 PM   #3488
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Quote:
Originally Posted by ChrisZwolle View Post
Another big project is coming to E6 in northern Norway, a realignment north of Fauske. This will reduce driving distance by 11 km and driving time by 25 minutes. It could start in 2018.

A new suspension bridge is planned across the Leirfjord, with a main span of 820 meters, which would make it the fourth longest in Norway and 13th longest in Europe. Not as gigantic as the Sulafjord bridge discussed above, but impressive nonetheless.
So, the E6 will return to its pre-1986 alignment through Bonnådalen? Only the Somnerset-Bonåsjøen ferry will be replaced by a bridge?
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Old December 19th, 2015, 01:24 AM   #3489
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Quote:
Originally Posted by Suburbanist View Post
Wouldn't this render two recently (1990s) tunnels kinda useless?
You say tomayto, I say tomahto. It occurs to me that, with this realignment, the older alignment north of Fauske can be repurposed for other uses. Such as connecting the Ofoten (Iron Ore) Line to the Norwegian mainline network...
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Old December 22nd, 2015, 03:12 PM   #3490
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E6 Hålogaland Bridge

Progress on the Hålogaland Bridge near Narvik.

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Old December 25th, 2015, 05:35 PM   #3491
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Quote:
Originally Posted by ChrisZwolle View Post
Another alternative is a two-span suspension bridge with a 'gravity based structure' (GBS) in the middle. This would be a 2 x 2.060 meter main span (world record) and include a 745 meter tall pylon (several different heights are mentioned with this proposal).





Simply mind-boggling.
Indeed. a perhaps more relevant comparison structure wise (but not in terms of revenue) would be the Troll A platform of the North Sea, though.



Troll A during tow. Note that about half of the structure is submerged.

Last edited by 54°26′S 3°24′E; December 29th, 2015 at 11:41 AM.
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Old December 25th, 2015, 07:58 PM   #3492
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Is the 745-m height measured from the sea bedrock or from its surface?
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Old December 26th, 2015, 02:44 AM   #3493
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From the sea bottom. The construction seems similar to the condeep concept for offshore oil platforms. As can be seen in the movie, one advantage is that the construction is made floating in sheltered waters, and then towed to the site of the bridge before being sunk in a controlled way down to the bottom. Another advantage is the large surface area between the sea bottom and the construction. I do not know the details of this fjord, but often there are hundreds of meters with deposits, and making fundaments at 450 m depth is in any case case challenging.

Norwegian fjords are ideal for construction of condeep structures, as they often are of great depth, and at the same time offer some shelter.

Last edited by 54°26′S 3°24′E; December 29th, 2015 at 11:46 AM.
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Old December 29th, 2015, 07:55 AM   #3494
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Fylkesvei 17 at Sjonfjellet near Nesna, Nordland


Mountain Road I. by Arne Langset
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Old January 4th, 2016, 05:42 PM   #3495
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The 520 meter long Kråkmo Tunnel opened to traffic today along E6 in Nordland. It's located in Hamarøy municipality.

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Old January 5th, 2016, 07:38 PM   #3496
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Does E6 have any bridge with embedded heating?
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Old January 6th, 2016, 05:20 PM   #3497
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Karmsund Bridge

The Karmsund Bridge spans Karmsundet, a narrow strait near the city of Haugesund. It was built in 1955 and is functionally obsolete and structurally deficient.

A study for the regional transportation of Haugesund has now been completed. The recommended alternative is a new four-lane bridge with bike lanes just south of the existing bridge. The cost of the bridge is estimated at 1 billion kr. (€ 100 million).

The existing 1955 bridge is a through arch bridge.

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Old January 6th, 2016, 05:40 PM   #3498
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What's the clearance of the existing bridge?
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Old January 6th, 2016, 05:49 PM   #3499
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46 meters. It is a busy shipping lane because it's protected from the heavy seas around the coast.
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Old January 6th, 2016, 10:56 PM   #3500
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Can't we really build these days bridges that last longer than that? 60 years with adequate repairs is very little... Should last at least few centuries! Some of the old bridges have managed that.
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