While I can't help with dimensions, I can help with some detail shots. When the trestle was rebuilt after the recent fire, Roger Hogan and I took lots of video and photos, all of which is digital. If anyone wants a copy, send me a USB hard drive with return shipping, and I'll copy it all over to your drive and ship back. Send me a PM.
Steve
Help Reunite
Rodinia Pannotia Pangaea
Support Your Local Craton
Celebrate syzygys locally