[OSM-talk] waterway=lock

[Gervase Markham]

On 27/08/09 14:27, Mike Harris wrote:
> On a related canal issue, I have a problem with deciding how to tag a canal
> bridge as a segment of a way. The way will often already have name= and ref=
> tags as a highway; but I want to add a name= and ref= tag for the canal
> bridge. Not keen on name_1 or ref_1 - any better ideas? I did wonder about
> adding a node in the middle of the bridge and then tagging this with the
> canal bridge information and reserving the name and ref tags for the highway
> segment.

The correct solution here is to use relations.
http://wiki.openstreetmap.org/wiki/Relations/Proposed/Bridges_and_Tunnels

The relation should be as follows:

type=bridge
across=<the road>
under=<the waterway>
ref=<bridge number>

Optionally:
maxwidth=
maxheight=
name=

However, no renderer yet shows this, although I've been working with 
Steve Chilton for a while to get it done.

Gerv