Thanks for the Goat Canyon Trestle video! This trestle is the most scenic spot along the mothballed Carrizo Gorge Railway.
http://railpictures.net/photo/473816/
http://railpictures.net/photo/525893/
Some operator attempted to rehabilitate the line in recent years to provide interchange traffic to Mexico, but apparently went broke trying. Here’s a couple “Cab Ride” videos of a maintenance train in 2012 going out along the line to remove rocks and inspect the goat canyon trestle.
Eastbound: https://www.youtube.com/watch?v=L66pfI5fuqY
Westbound return: https://www.youtube.com/watch?v=NYt91UpxH6U