Tags: Site Of Special Scientific Interest.
Treffgarne Bridge Quarry is a Site of Special Scientific Interest (or SSSI) in Pembrokeshire South Wales. It has been designated as a Site of Special Scientific Interest since January 1954 in an attempt to protect its fragile geological elements. The site has an area of 0.4 hectares and is managed by Natural Resources Wales. The name derives from the Welsh Trefgarn.