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Old August 20th, 2010, 09:22 PM   #1421
flierfy
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Quote:
Originally Posted by poshbakerloo View Post
What is the point of a concrete surface over normal asphalt?
Better durability and greater visibility. And most importantly it is more cost-effective if properly done.
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Old August 20th, 2010, 10:20 PM   #1422
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But there are some sections of mixed asphalt and concrete pavement. Probably concrete over asphalt to cover some damaged parts.
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Old August 20th, 2010, 10:26 PM   #1423
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Or the other way around. You can easily fix some potholes with asphalt.
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Old August 21st, 2010, 02:20 AM   #1424
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I particularly don't like concrete in motorways, its very noisy.
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Old August 21st, 2010, 04:34 PM   #1425
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Old August 21st, 2010, 04:41 PM   #1426
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Quote:
Originally Posted by PortoNuts View Post
I particularly don't like concrete in motorways, its very noisy.
I have also been sceptical about concrete but after having some fun in Germany (which has plenty of concrete autobahns) I somewhat canged my mind. It may be a little more noisy but you will only feel it if you're driving a lower class car which means you won't have much comfort anyway (so it won't matter).

If concreate really means saving money then I say yeah let's build it.
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Old August 21st, 2010, 09:07 PM   #1427
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I personally prefer asphalt. It's smoother and aesthetically more pleasing.
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Old August 23rd, 2010, 06:24 AM   #1428
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Old August 23rd, 2010, 08:19 PM   #1429
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M50 near Dymock


http://www.flickr.com/photos/6815804...n/photostream/
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Old August 23rd, 2010, 08:42 PM   #1430
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the M50 passes by some lovely scenery, its one of my favourites.

As for concrete vs asphalt, I wouldn't mind the slight extra general noise of concrete but the thump, thump, thump, thump as you pass over the joins between sections on some concrete stretches is very annoying.

Black also looks better than gray imo, could an additive be put into the concrete to make it at least dark gray if not pitch black?
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Old August 23rd, 2010, 11:28 PM   #1431
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Quote:
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the M50 passes by some lovely scenery, its one of my favourites.
Junction number 3 at M50 is funny.
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Old August 24th, 2010, 12:43 PM   #1432
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I quite like this photo - it shows the six lane section of the M25. Police are trying to get a fathers for justice protester down off the gantry

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Old August 24th, 2010, 07:24 PM   #1433
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Well, after Buckingham Palace they are now trying the motorways.
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Old August 24th, 2010, 08:34 PM   #1434
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I like it how the M25 is wide enough there to allow for four lanes to still be open - normally the whole road gets closed.

Of course, that bit of the M25 is not pleasant with only 4 lanes, but 4 is better than 0!
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Old August 25th, 2010, 12:12 AM   #1435
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How much of the M25 is 3 lane?
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Old August 25th, 2010, 12:13 AM   #1436
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Old August 25th, 2010, 12:24 AM   #1437
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Quote:
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How much of the M25 is 3 lane?
Pretty much the entire northern section, plus a significant portion of the eastern section, and a section of the southern section until M23. I'd say the majority of M25 is only 2x3 lanes.
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Old August 25th, 2010, 12:38 AM   #1438
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Quote:
Originally Posted by DanielFigFoz View Post
How much of the M25 is 3 lane?

Simplifying, most of Southern and Western part of M25 has at least 4 lanes, Northern and Easternmost no more than 3 So, it's around 50/50.

I drove around whole M25 2 weeks ago and there are some parts of it being rebuilt and some already finished. All between junctions with M40 and A1.
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Old August 25th, 2010, 01:36 AM   #1439
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Today we are on planned and never finished stretch of M27 between Portsmouth and Chichester, which actually is numbered as A27.
Until Chichester, this road is close to motorway standard apart from some details. What distinguish it from proper motorway? It's not hard to find out watching this short report.

What makes me most impressed of this road is a lay-out quality, which between Havant and first roundabout in Chichester is just perfect. Originaly A25 here, was built with concret. Joints still can be seen, but not feel at all, under the asphalt's coat. This stretch is incredibly smooth and quiet. I wish every roads in Britain had such good surface.

A map:


Approaching J12 from South.










M27 ends up here.




























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Old August 25th, 2010, 01:48 AM   #1440
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Sorted by the number of lanes each way (and including the A282):
  • 2 lane:
    • at junction 5
    • between the west-facing slips at J21a and the east facing ones at J21 (they overlap and this has had earthworks to widen it to 3-lanes done recently)
    • through junction 27
  • 3 lane:
    • J2-5
    • J5-7 (J6-7 is 4 lanes anti-clockwise)
    • through J8, J9, J10, J11, J12, J15 and J16
    • J18-21a (widening to 4-lanes well underway - 18 to 19 will be done in the next couple of months)
    • J21-27 (J21-J23 widening to 4-lanes started)
    • J27-31 (being widened to 4-lanes between junctions - no first hand idea on progress, but IIRC it's quite far on)
  • 4 lane:
    • J31-2 (Dartford Tunnel is 2+2, but one-way, with the 4-lane bridge going the other way)
    • J7-8
    • J8-9
    • J9-10
    • J10-11
    • J11-12
    • through J13 and J14
    • J16-18 (unofficially - they did do some work on Saturday involving lane closures, but it's very much 4-lanes each way most of the time, even if it is supposedly still being widened)
  • 5 lane:
    • J12-13
    • J13-14
  • 6 lane:
    • J14-15

Taking just inter-junction distances, you get:
3-lanes each way: 71 miles (37 miles when the widening schemes under construction are finished)
4-lanes each way: 43 miles (77 miles when the widening schemes under construction are finished)
5-lanes each way: 5 miles
6-lane each way: 2 miles
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