I'm trying to query OpenStreetMap via QGIS (for example) to get a list of all streets in Paris and their width.
- Boulevard Sebastopol : 30m
- Rue Tiquetonne : 11m
Is there such data in OpenStreetMap ? or anywhere else ?
OpenStreetMap data is not really setup like that. If you're familiar with editing OSM you will know that to create a road it is a simple line. So any road width that is styled is purely for the style of the map and not an actual account of the width of the roads.
Having said that you may get lucky with a crazy OSM fanatic who might have gone around the streets and measured them to add a tag with the width data (highly unlikely).
Suggestion I can think of would be to: