That trestle would make an interesting model, especially the apparently wooden block feet for the bridge girders. The nearest one of which shows less compression than the further three which are bearing the weight of train.
Location/Date of Photo:
» Dunedin Railways; Sawyers Bay, South Island Main Trunk; Dunedin, New Zealand; October 19, 2018
http://www.railpictures.net/photo/676614/