Bridge and Causeway to Former Quarry at Chwarel-y-Fedw.

Slate-rubble causeway, approximately 230m long, and stretching in an arc from the road, across the river Lledr and on, terminating at the railway line. The first stretch, to the river is the longest, approximately 180m; this has a 9-span clapper section at the river end; constructed of large slatestone slabs, and with cutwaters to the upstream, convex side. The opposite side of the river has a similar 10-span clapper section; these rise slightly in the middle and are joined across the river by a modern timber bridge. The causeway is approximately 1.2m high and 1.8m wide; it is of dry-built, random rubble construction and has a metalled footpath and (in part) a C20 wire fence.