The piers and abutments are made of ashlar blackstone, whilst the parapets, which stand a metre above arch level, are coped with chamfered sandstone.
It was designed by Thomas Jackson of Messrs Greene & King, who built the line from Knockmore to Banbridge.
The line, and thus the viaduct, was closed on 30 April 1956 and the tracks lifted shortly after.
[3] In 2009, the PSNI was called to the viaduct after a group of teenagers broke onto and bungee jumped from it.
Dromore Town Park passes underneath two of the arches,[5] though the ends have both been sealed off from public access.