Have you ever seen a bridle trail/ hiking trail that crosses over a highway? I mean, aside from the non-road-overpasses I’ve shown you recently. (NOBODY is supposed to use THOSE ones.) This is more in the “pedestrian overpass” category, which is totally normal, except that this is a hiking trail, not a downtown area, which is where you’d normally find pedestrian overpasses.
This one can be found in the South Mountain Reservation, allowing the Lenape Trail to safely cross South Orange Avenue.