Hi, thank you for the link that explain the rationale for the non-use of google maps.
Sorry for the delay to answer -- I wanted to walk again there to make sure I got the mapping right at the crossing but I couldn't.
I've made an edit to extend to the best of my recall the new situation, can you look over it just to confirm there's no obvious error? I'm new contributing to OSM. Here's the changeset: https://www.openstreetmap.org/changeset/181149295 
Thank you.