My best guess is it’s a busy road so it’s dangerous and not really meant for bicycle and walking. I’ve done 13 miles yesterday to get a comic book on a bike and this right here is the distance between my house and a friend’s house I told I can come on bike because what I just did gave me a feeling I could do it but my ass hurts so not right now. But yeah I want to see how this would play out. Before I would walk but I took a bike to a comic book store because it would’ve closed if I walk and I ended up getting there in time. Took longer than expected something that should’ve been an hour probably took 2 or 3 hours. So yeah I can do half of that for sure.
I use organic maps for biking and walking and it’s a lifesaver. It actually takes me along bike paths rather than massive high speed stroads and even gives an elevation graph for the path it gives.
Have you tried StreetComplete? It let’s you tweak OSM to help develop the map.
Organic Maps allows mapping, too.