Entry Name: Carreg Ddu Viaduct and Submerged Dam
Listing Date: 31 July 1995
Last Amended: 6 April 2011
Grade: II*
Source: Cadw
Source ID: 16200
Building Class: Transport
ID on this website: 300016200
Location: About 7km SW of Rhayader centre. Carries road from Elan valley to Claerwen valley
County: Powys
Community: Rhayader (Rhaeadr Gwy)
Community: Rhayader
Locality: Elan Valley
Traditional County: Radnorshire