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Old February 3rd, 2011, 06:09 PM   #5041
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Quote:
Originally Posted by ChrisZwolle View Post
That cannot happen without complete rebuilding of the bridge. The current bridge is rather weak, it cannot support shoulder running in the southbound direction for example. Weight is the main problem. Even if the current bridge had space for 8 lanes, it cannot handle the weight of 8 lanes of traffic.

Since demolishing the existing one, and building a new one over a timespan of 3 years is not an option without building a temporary bridge, the current solution is the best.
In that case they should just leave the bridge as it is and build two other shoulder running lanes as a (possibly drilled) tunnel under the Waal.
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Old February 3rd, 2011, 11:06 PM   #5042
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N57 Middelburg

A new expressway for the capital of Zeeland.

Source: middelburg.nl















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Old February 4th, 2011, 07:04 PM   #5043
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A highway going under a river/canal just looks illogical if you're not used to having aquaducts
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Old February 4th, 2011, 07:13 PM   #5044
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This is the first aquaduct in the Zeeland province, by the way, unless you count the A58 Vlake Tunnel as an aquaduct. This new expressway will open tomorrow.

Zeeland arguably has the best infrastructure of the Netherlands, relative to population. There are many major (expensive) objects like dams, bridges and tunnels. N57 is a nice 2x2 expressway, as is the N254, which is the beltway of the port of Vlissingen. Another major upgrade project is the widening of N62 to a 2x2 expressway between A58 near Goes to the existing 2x2 Westerschelde Tunnel. It will even feature a small stack interchange (3-way) with N254. Another major upgrade project is the widening of the N61 in Zeeuws-Vlaanderen (southern most part of Zeeland) to 2x2 lanes. Only N59 needs more investment, but all in all it is not bad.

N254:
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Old February 5th, 2011, 11:27 AM   #5045
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New N57 in Middelburg opened today!

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Old February 5th, 2011, 01:22 PM   #5046
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Excellent. It's a huge boost for that city.
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Old February 5th, 2011, 01:36 PM   #5047
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Definitely. The old N57 ran right through the historic city center, within the old fortification structures... That's highly uncommon in the Netherlands to have a major highway running through the old city without alternate routes.



Here's the new N57 / A58 interchange. Thank god they dropped the ridiculous "non motorway interchanges cannot be free-flowing" rule, and they made it into a trumpet interchange. It's called "knooppunt de Rode Leeuw" (Interchange the Red Lion).
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Old February 5th, 2011, 06:16 PM   #5048
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knooppunt looks similar to Swedish "knutpunkt" and it's prolly the same word and knutpunkt's english translation is junction.
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Old February 5th, 2011, 06:26 PM   #5049
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Quote:
Originally Posted by metasmurf View Post
knooppunt looks similar to Swedish "knutpunkt" and it's prolly the same word and knutpunkt's english translation is junction.
Using Google Translate

Knoopunt: node

Knutpunkt: hub

Knooppunt de Rode Leeuw: Node, the Red Lion.

Knutpunkt sounds like someone got smacked in the groin in English.
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Old February 5th, 2011, 07:17 PM   #5050
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Quote:
Originally Posted by ChrisZwolle View Post
Definitely. The old N57 ran right through the historic city center, within the old fortification structures... That's highly uncommon in the Netherlands to have a major highway running through the old city without alternate routes.

http://img638.imageshack.us/img638/9...middelburg.jpg

Here's the new N57 / A58 interchange. Thank god they dropped the ridiculous "non motorway interchanges cannot be free-flowing" rule, and they made it into a trumpet interchange. It's called "knooppunt de Rode Leeuw" (Interchange the Red Lion).

http://img138.imageshack.us/img138/7...roodeleeuw.jpg
Great map and picture. I didn't realize the interchange is rare in this country but now that you've mentioned it, I've looked up some examples and this is indeed an improvement. Let's hope it becomes a habit.

I've added some lines to your map to illustrate the local function of the N57 as well. The old road did very little for local traffic between the city (and its surrounding areas) and the industrial area (in red on the map). It lead to huge traffic jams on the black lines during rush hour. The black lines are 1x1 roads with many bridges, among which the Stationsbrug on the main canal which opens a lot. It was a huge bottleneck that the new N57 should fix.

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Old February 5th, 2011, 07:32 PM   #5051
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This one also seems more a tunnel than a viaduct for boats, why it isn't classified as such?

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Old February 5th, 2011, 07:35 PM   #5052
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There is no real rule for which is a tunnel and which is an aqueduct. Virtually all aqueducts are basically short tunnels.
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Old February 5th, 2011, 07:55 PM   #5053
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One could draw the difference on the technicalities of whether the waterway is actively supported by structures like pillars and foundations (for the "acquaduct") or the roadway was dug in a way the walls of the "tunnel" serve the only purpose of giving it stability and spreading the loads.
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Old February 6th, 2011, 12:14 AM   #5054
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Quote:
Originally Posted by ChrisZwolle View Post
During the first seconds after seeing this picture I was thinking: "ok, they did this new fancy road and it's almost completed with asphalt poured and marked, but why haven't they started the bridge yet??" As Rebasepoiss said, people not used with this short tunnels under aquaducts find them illogical and weird at the beginning.
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Old February 6th, 2011, 12:29 AM   #5055
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That's a canal. Aqueducts are elevated canals.

From Wikipedia:
In a more restricted use, aqueduct (occasionally water bridge) applies to any bridge or viaduct that transports water—instead of a path, road or railway—across a gap. Large navigable aqueducts are used as transport links for boats or ships. Aqueducts must span a crossing at the same level as the watercourses on each side. The word is derived from the Latin aqua ("water") and ducere ("to lead").

The whole article for those who are interested:
http://en.wikipedia.org/wiki/Aqueducts

Canals:
http://en.wikipedia.org/wiki/Canal
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Old February 6th, 2011, 12:34 AM   #5056
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Such tunnels under waterways (mostly artificial waterways like canals) are called aqueducts in the Netherlands and are different from the Roman structures you can find in southern Europe.
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Old February 6th, 2011, 12:37 AM   #5057
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That I didn't know. Does that mean we're both right?
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Old February 6th, 2011, 12:41 AM   #5058
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Yep.

Like this is an aqueduct:

Pont du Gard, France


California aqueduct


Gouwe aqueduct


Not that the Dutch spell it like "aquaduct" while the English term is aqueduct.
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Old February 6th, 2011, 04:32 PM   #5059
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Quote:
Originally Posted by ChrisZwolle View Post
Zeeland arguably has the best infrastructure of the Netherlands, relative to population. There are many major (expensive) objects like dams, bridges and tunnels. N57 is a nice 2x2 expressway, ...
Note that the N57 is only 2x2 on some parts. Most part it is 1x2. The new part near Middelburg is 2x2 but north of Middelburg it is build as 2x1.
The only other part that is 2x2 is the Haringvlietdam.
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Old February 7th, 2011, 06:42 AM   #5060
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