Well done indeed. It is the bridge over the Seudre river. I tried to have the church (Marennes) in the shot because it is a well known landmark for all those sailing in the area, and made it easier to tell the difference with the pont d’Oleron, which you would see in the distance between the arches if I had aimed just a bit more to the left (but I then would have lost the “clocher de Marennes).
Back in Blighty tomorrow if all goes well