Knockduff Railway Viaduct

Map Reference: J059333 (3059, 3333)

This three-arched viaduct was built in 1864 for the Newry & Armagh Railway. The line rose steeply from Goraghwood Junction, over the viaduct and through Lissummon Tunnel, which was the longest railway tunnel in Ireland. It was closed to traffic in 1955.

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