Looking up at the northwest end of the trestle, which is about 708′ long and around 100′ high, over Lonesome Valley Road in Claiborne County TN. Here’s the southeast end:
This is on the same Norfolk Southern line I discussed in the Oakman tunnels posting. This trestle, old as it appears, was most certainly a replacement or reinforcement of an existing trestle. The original concrete footers are still there.
Blogging the Railroad Tunnels 
There was a wooden trestle in the late 1800’s. It collapsed in June 1892 under the weight of a train filled with coal. One of my ancestors died that day. He was 25 and the fireman – James Robert Shelton of Waynesville, NC.
Thank you for this information!