A little below or closer to the Doubs there is another "path", both come together again afterwards. Even the junction didn't convince me - probably something for muddy drivers.
Unfortunately, the authors didn't provide any useful information for cyclists. A picture of the countryside - I couldn't find that there. And the picture of the bridge is great, but I couldn't really do much with it, as I was more interested in the condition of the path and whether I might have to cross there. But it was all good - the paths are good, even if they are single track. However, I can't say what the paths look like in the rain. It might be a bit more difficult then. It's not possible with slippery tires anyway.