Pont Grog Conwy Conwy Suspension Bridge Adeiladwyd 1822-826 fel rhan o'r Gwelliannau i'r ffordd rhwng Caer a Bangor Constructed 1822-1826 as part of the improvement of the Chester to Bangor Road Thomas Telford 1757 - 1834 Peiriannydd Engineer Cyflwynwyd ar 9 Awst 2007 gan sefydliad y peirianwyrsifil - Cymru I ddathlu 250 o flynyddoedd ers ei eni Presented on 9 August 2007 by the Institution of Civil Engineers - Wales to celebrate the 250th anniversary of his birth