<div dir="ltr">Other replies already alluded to this, but the bridge is often mapped as an area like at <a href="https://www.openstreetmap.org/way/604254012">https://www.openstreetmap.org/way/604254012</a> with man_made=bridge. This allows you to tag all the attributes of the bridge distinct from the road way which crosses the bridge. eg. name=* and ref=*.<div><br></div><div>On the main road way like <a href="https://www.openstreetmap.org/way/52981128">https://www.openstreetmap.org/way/52981128</a> (but also in this case each of the cyleways that are part of the same bridge, the bridge reference would then be bridge:ref= as ref= would refer to the road reference not the bridge reference.</div><div><br></div><div>Yes this results in duplicate information tagged on both the highway=* way and man_made=bridge area but it makes it easier for data consumers this way, otherwise you need to do spatial intersection tests.</div><div><br></div><div>While smaller bridges won't have a man_made=bridge mapped out, over time as the map improves they would be added.</div><div><br></div><div>It also helps determine, for example in the Merimbula Lake Bridge case, if there is one bridge that the road and cycleways share, or there is a road bridge and then two seperate bridges for the cycleways adjacent. Tagging man_made=bridge makes it clear (again through a spatial intersect) that there is just a single bridge, whereas without it, it would be unclear.</div><div><br></div><div>I think the ref=* tag on man_made=bridge, and bridge:ref=* tag on highway=* is the way to go.</div><div><br></div><div>Bob for your case I'd go with aeroway:ref=* for the airstrip reference, leaving ref=* for the road reference.</div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Wed, 14 Apr 2021 at 16:48, Andrew Hughes <<a href="mailto:ahhughes@gmail.com">ahhughes@gmail.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr">Hi All,<div><br></div><div>I've found an appropriate tag of bridge:name and have applied it to the bridge: <a href="https://www.openstreetmap.org/search?query=Merimbula%20Lake%20Bridge" target="_blank">https://www.openstreetmap.org/search?query=Merimbula%20Lake%20Bridge</a></div><div><br></div><div>But I also know this bridge has an asset id of "BID7" for the asset owner. These asset id's are frequently referenced within the transport industry and I believe they would be beneficial to OSM.However, I can't see anyway of adding an ID to the bridge (or any other asset for that matter). </div><div><br></div><div>Furthermore, being able to search by the asset id using nominatim would also be highly desirable - just as searching for the bridge name works a treat! So if there's any potential there it would be great.</div><div><br></div><div>Any advice would be appreciated.</div><div><br></div><div>Thanks in advance Andrew</div><div><br></div></div>
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