Gare de Daverdisse is wrongly located on the map. It was part of TRAIN VICINAL tram route and located more or less on the junction of N855 and N857.
From http://wikimapia.org: Ancien arrêt du tram reliant Rochefort Wellin Daverdisse et Graide.

This map provides the correct situation:
https://www.cartogiraffe.com/belgi%C3%AB+++belgique+++belgien/wallonie/luxembourg/neufch%C3%A2teau/daverdisse/daverdisse/le+moulin+de+daverdisse/