By chance I have detected that amny mappers use this combination on highways: ways con bridge=* embankment=yes
To see an example search in Northern Italy: http://overpass-turbo.eu/s/axW When I saw the first example I thought of an accidental mapping error, but the Overpass Turbo revealed that this a widespread practice: 400+ in Italy 200+ in GB 600 in Germany 250 in France 100 in Spaign 170 in Scandinavia and Baltic countries 130 in the USA In my opinion these are (nearly) all mapping errors. A highway (or railway) can only be either on a bridge or on an embankment, but not on both at the same point. Where the highway is on an embankment and crosses a waterway, in most of the cases the waterway needs taging with tunnel=yes|culvert and level=-1. The size of the problem can be seen from the above numbers. Even if we agree that in most of the cases we are dealing with tagging errors, it cannot be excluded that in some cases the mapping may be correct. Which means manual correction with inspection of aerial photos. No way that this can easily be done. Volker (Italy)
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