Not too far from Aix en Provence you can find a Roman bridge with two arches under which to pass as you cross. I expect that the stones from others were quarried and so this is the last surviving example. If we check the sources we might find mentions of more.
https://twitter.com/DrJEBall/status/1501998794036109319
I located it on Google Maps for you
From Grächen to Zermatt via the longest suspension bridge: part two [gallery ids=“3755,3756,3757,3758,3759,3760”] When you wake up in the Europahütte and look down you can see the span of the longest suspension bridge in the morning shade of the mountains. It’s at this moment that people like me think “shame, not ideal for pictures”. My advice is to plan the day of hiking so that you arrive at the bridge when it’s lit by the sun to get good images.