What is a train bridge called?

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Tags

1. #bridge
2. #stools
3. #rigid
4. #tables
5. #destination
6. #spans
7. #tressel
8. #railroad
9. #trestles
10. #short
11. #composed
12. #supported
13. #historically
14. #banquets
15. #number
16. #trestle
17. #sometimes
18. #frames
19. #frame
20. #support
21. #timber
22. #tripod