voschix
I have now corrected the position of the bypass, and the approximate position and shape of the junction with  Changeset #55180313. As sources I used Mapillary photos, GPX tracks, and the South Tyrol Orthofotos 2014/2015 layer in JOSM. The exact shapes and positions of the roads making up the junction still need to be adjusted when GPX tracks or updated Orthophotos become available. I also updated speed limits and illumination from the Mapillary photos.