additional things that can be part of the definition:
- passages through embankments are (in general) not tunnels.
- when a road passes over another one, located in a cutting, does not
place the lower one in a tunnel (Antwerp ring road)
- when the road goes under a waterway, the road is in a tunne
AFAIK the tunnel=building_passage, this is not a tunnel, but using the
tunnel tag anyway. I guess the same is true for culvert. I would not
try to come up with a definition that is also applicable to those 2.
Maybe my rule of thumb could be extended somehow for the metrotunnels,
which are clearly
Hi,
First: the interpretations given here to 'tunnel' are much more strict than the
wiki, which leaves much more room for interpretation. A strict interpretation
of tunnel makes the use of tunnel=yes of tunnel=culvert for passages of rivers
underneath a road senseless, just as tunnel=building_
Well...
My feeling is there is no tunnel there. Even when the under-passage is quite
long in regard with the width.
Could the railway bridge (at the 2nd link) be considered a viaduct ?
https://en.m.wikipedia.org/wiki/Viaduct
Envoyé depuis mon smartphone Samsung Galaxy.
Message d'orig
This is the place:
https://www.google.com/maps/@51.2216551,4.0345363,3a,75y,49.39h,77.96t/data=!3m6!1e1!3m4!1sjggCIzrpgLhVFtrn6gYCnQ!2e0!7i13312!8i6656
(sorry no Mapillary images yet).
Burchtakker (the parallel road) is lowered near the (bicycle) tunnel
under the E34/A11.
On Tue, May 28, 2019 at
I think there is a tunnel under the e34 between Antwerpen en Zelzate.
There used to be a level crossing which was removed and instead they
created an underground passage for it.
M
Op di 28 mei 2019 14:46 schreef Lionel Giard :
> @joost schouppe To me that's indeed a bridge,
> as you see the s
@joost schouppe To me that's indeed a bridge,
as you see the same structure as on the motorway bridges : a platform
supported by pillars
A tunnel is generally something that was dig (removing earth/material) and
consolidated from the inside (most often with concrete) like a subway
tunnel if
@Gerard: don't quite agree - but essentially it comes down in part ot what
Lionel added, about how the structure is built.
A bridge is typically built on two load-bearing bases at either end, and a
platform/arch/.. over it to help carry whatever goes over it.
A tunnel is dug below or pushed throu
I doubt one had to dig something for the road to pass under the
railway. There is no "earth" between the road and the sky, only stuff
that humans created, like concrete, stones and asphalt. So a bridge
for me.
I apply the rule: stand on the road, look up, which layers of material
do you "see" befor
Hmm, how about this case:
https://play.osm.be/historischekaart.html#18/50.84125/4.03590/dhm_hill-osmroads
https://www.mapillary.com/app/?lat=50.8409878896054&lng=4.035847194701205&z=17&pKey=CemcYfldMKwaCCdn0eK2bQ&focus=photo&x=0.5005982815044207&y=0.34925403860156434&zoom=0
It's a road that was d
I don't think that, what was first, is always relevant. Your cycleway
'tunnel' is a bridge. A tunnel has to go in depth or under a lot of
other things (not a simple crossing).
A bridge is in general less thick then the height of the passage.
Or the height of a tunnel is less than half the level
I agree with the above answer that except #2, all are bridge.
One other method to identify a bridge is to check the structure (either
with a "tablier"/bridge deck which goes from one support to the next, or
with arch like one of the example...). There are typical bridge structure,
while most tunne
I'll agree with everyone else on the given selection here.
As for how I try to decide:
Ideally, you'd have the history of 'what came first'. Whichever level this
one is at goes as the 'baselevel'.
Either a new road / railway / .. goes:
OVER it, making that a bridge
UNDER it, making it a tunnel
AT
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