[Tagging] [OSM-talk] connection between 2 islands

[Randy]

Randy wrote:

situation that started this thread.
>
>The term "embankment" defines the structure on which the road is built in
>the original example for this thread. It doesn't define the highway.
>

I note that there is a Key:embankment wiki page, which suggest 
"embankment=yes" as a tag for highway/railway/waterway=*, in addition to 
use in micromapping as "man-made=embankment". While the latter would be my 
preferred use of embankment, tagging the byway to show that it shares the 
way with an embankment seems reasonable as well. So, one could say, for 
the original example, "highway=*, causeway=yes, embankment=yes".

This would, to the extent possible without micromapping, adequately define 
the original example. Assuming the above is best practice, then 
"highway=*, causeway=yes, bridge=yes" would be the proper tagging for a 
causeway built on low pylons or pedestals, such that water, and possibly 
small boats can go under it, but not larger boats.

However, this begs the question of whether "causeway=yes" provides any 
unique information beyond "highway=*" combined with "embankment=yes" or 
"bridge=yes".

-- 
Randy