NPRN91426
Cyfeirnod MapSH77NW
Cyfeirnod GridSH7000076073
Awdurdod Unedol (Lleol)Conwy
Hen SirSir Gaernarfon
CymunedPenmaenmawr
Math O SafleFFORDD
CyfnodModern, 20fed Ganrif
DisgrifiadConcrete-lined tunnel opened in 1993 to carry the westbound carriageway of the A55 North Wales Expressway (nprn 403728). Eastbound traffic uses the Penyclip alignment of 1936 (nprn 91423).
B.A.Malaws, RCAHMW, 27 September 1997.