Viaducts
| Photo | Name | Rating | External Link | Arches | Length | Height | Year Opened | |
|---|---|---|---|---|---|---|---|---|
| < 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 > >> | ||||||||
 | Ballochmyle Viaduct | 7 | 147m | 52m | 1848 | |||
| Barmouth Bridge | 900m | 1867 | ||||||
| Bassaleg Viaduct | 1826 | |||||||
 | Bath Road Viaduct | 108m | 19m | |||||
 | Belmont Viaduct | 8 | 213m | 40m | 1856 | |||
 | Bennerley Viaduct | 17 | 443m | 19m | 1877 | |||
 | Bickleigh Viaduct | 7 | 153m | 38m | 1860 | |||
 | Big Water of Fleet Viaduct | 20 | 274m | 21m | ||||
 | Bilston Glen Viaduct | |||||||
 | Blaencwm Viaduct | |||||||