@Gerard: don't quite agree - but essentially it comes down in part ot what Lionel added, about how the structure is built.
A bridge is typically built on two load-bearing bases at either end, and a platform/arch/.. over it to help carry whatever goes over it. A tunnel is dug below or pushed through. In case of my examples: road was first, and at this point the railway was built on top of it, at a raised level -> hence a bridge. The pillars / crossbar / load-bearing T-style plates are clearly visible. The cycleway tunnel was built after, by constructing the concrete elements and then PUSH it under/through the embankment which holds the trainrails, making it a tunnel.(and due to how it's built, people do refer to it as a tunnel) @joost schouppe <[email protected]> Good question. Lionels reasoning would say it's a bridge, Mine would probably have this as a tunnel. Lionels feels more accurate there though.I'll just assume that 'landscaping' at this scale to make it happen is cheating a bit. But it does show my idea isn't entirely 'bulletproof'. Op di 28 mei 2019 om 12:29 schreef joost schouppe <[email protected] >: > Hmm, how about this case: > > > https://play.osm.be/historischekaart.html#18/50.84125/4.03590/dhm_hill-osmroads > > https://www.mapillary.com/app/?lat=50.8409878896054&lng=4.035847194701205&z=17&pKey=CemcYfldMKwaCCdn0eK2bQ&focus=photo&x=0.5005982815044207&y=0.34925403860156434&zoom=0 > > It's a road that was dug under a slightly raised train track, but it looks > like a bridge. Or is it bridge for the road, tunnel under the train, bridge > again :) ? > > Joost Schouppe > > _______________________________________________ > Talk-be mailing list > [email protected] > https://lists.openstreetmap.org/listinfo/talk-be >
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