[Tagging] inconsistencies in bridge

[Nathan Edgars II]

On Mon, Sep 27, 2010 at 7:50 AM, M∡rtin Koppenhoefer
<dieterdreist at gmail.com> wrote:
> recently there was introduced some weird stuff in bridge:
> http://wiki.openstreetmap.org/wiki/Key:bridge
>
>    bridge=yes
>    bridge=aqueduct
>    bridge=viaduct
>    bridge=swing
>    bridge=abandoned
>    bridge=...
>
> I'm fine with yes, but also aqueduct, viaduct, swing may be OK,
> indicating all a special kind of structure, some of them maybe not
> necessarily bridges (e.g. aqueduct: how do you tag the parts that are
> solid walls and don't allow to pass under?), but they follow some
> logics.
>
> But abandoned? How would that fit into bridge typology? Looking at the
> page history the author put "former" before this, and then changed to
> abandoned. Both are status-tags. How would I proceed to tag a
> abandoned aqueduct? I don't think it's a good idea to mix status an
> typology.

This is the same as railways: you can have railway=tram or
railway=abandoned, so how do you tag an abandoned tramway?