2014-08-07 19:06 GMT+02:00 Philip Barnes <p...@trigpoint.me.uk>: > An aqueduct is definitely a type of bridge, i.e. one carrying a > waterway, usually a canal over a road, river or valley. > > The most famous, and scariest of them all > http://en.wikipedia.org/wiki/Pontcysyllte_Aqueduct >
yes, aqueducts will usually also have bridges as parts of them (not all, some even run underground for instance). Still this is a completely different kind of typology than other values in the bridge key. E.g. the bridge you refer to could also be categorized as trough bridge. "aqueduct" and "viaduct" are classifications that refer to the way that runs on the bridge, "trough bridge" or "truss bridge" or "arch bridge" refer to the kind of structural system. There are of course also lots and lots of subtypes (and mixed types). That's why I propose to use several tags to (potentially) describe different aspects like structure, material, etc. cheers, Martin
_______________________________________________ Tagging mailing list Tagging@openstreetmap.org https://lists.openstreetmap.org/listinfo/tagging
