Aqueduct carrying Montgomeryshire Canal over River Vyrnwy

Long five-arch masonry structure of squared blocks with capping bands, rusticated segmental archrings with keystones and rusticated soffits. V-shaped stepped cutwaters with almond profile and domed cappings. Lines of oval brace-plates to tie-rods through haunches of arches. Centre arch and outer north arch have cradles of fish-bellied cast iron girders with tie-rods though haunches and exposed rods under soffits. Outer masonry ends are checked forward with curving abutments descending to end at square piers about river banks.

Three tapering stone piers with cappings on towpath side of aqueduct with ironwork handrail set in stone seatings. Large masonry edges to narrow length of canal contained by puddled clay etc.