[Tagging] bridge=aqueduct mapped as polygon riverbank?

[Wyo]

yvecai wrote:
> In any case, for routing it is better to keep a way waterway=canal in
> the middle, no?
>
Sure, any type of waterway. Some add a tag "boat=yes" albeit I don't think its 
sufficient since boats can be any size. There's a german article in Wikipedia 
which describes them better (http://de.wikipedia.org/wiki/Binnenwasserstraße). 
Sorry I haven't found anything in english.

Wyo