[OSM-talk] When is a bridge not a bridge?

David Earl david at frankieandshadow.com
Thu Jan 22 14:03:05 GMT 2009


On 22/01/2009 13:57, Frederik Ramm wrote:
> Hi,
> 
> David Earl wrote:
>> Are the ramps part of the bridge? If they are on solid embankments? If 
>> they are a lattice structure supported on pillars, perhaps like 
>> intermediate supports of the bridge itself? If they have parapets or 
>> not? Or do people feel the bit marked as bridge should strictly be 
>> only the span (or spans) itself?
> 
> ;-) I'm surprised you're not asking the obvious: How can I tag a bit of 
> road that is layer=0 at one end and layer=1 at the other!

Yes, I know you need to split the way. But that begs the question, which 
then becomes "should the way be split near the bottom the the approach 
or the top?" possibly depending on the different cases of how the 
approach is constructed.

David





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