Hello otji73. 
Merlin1969 (https://www.openstreetmap.org/user/merlin1969) was the one who opened the construction here in https://www.openstreetmap.org/changeset/154785877. You may want to reach out to them regarding their resources. My changeset (https://www.openstreetmap.org/changeset/154845979) was made after merlin1969’s modifications and was intended to update highway alignment to Strava data.
Hope that helps and have a great day!