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 <lionel.gi...@gmail.com>:

> @joost schouppe <joost.schou...@gmail.com>  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 you want. It seems pretty rare to dig a big hole, make a tunnel
> and put back the earth on top ! ;-)
>
> I can't find example of tunnels that's really like "under a railway or
> motorway", so i would say that probably 99% of the tunnel are below ground
> or mountains/hills (if we exclude the obvious building passage that we
> classify as tunnel in OSM). They are generally longer than wide as someone
> quoted from wikipedia.
>
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