What it is
Sir John MacNeill's viaduct has twelve stone arches on the south bank, three on the north and a central iron span that was rebuilt in 1932; it was one of the first large lattice-girder bridges in the world. Trains still cross it every half hour, which makes it a favourite of photographers from the riverside walk below.
The best views are from the Marsh Road on the north bank and from the Ramparts walk on the south side.
Getting there by bus
The viaduct is 15 minutes' walk east of the town centre along the north quay. Buses along Scarlet Street and Marsh Road stop a few minutes away (Scarlet Street stop), and MacBride railway station is right beside the northern end.
Combine it with the walk up to St Laurence's Gate.
