From Auran's Content Creation Art Source:
The in-game crossing rebuilt into NLcrossing-WS2t35.
W = (Wood) Timbered crossing.
S = For use with in-game Third_Party_SWE and similar roads.
2t = 2 track.
35 = 3.5m track-spacing.
Surveyor: Objectmode-NL-Trackside.