The Neath To Abergavenny Trunk Road (A465) (Abergavenny To Hirwaun Dualling And Slip Roads) And East Of Abercynon To East Of Dowlais Trunk Road (A4060) And Cardiff To Glan Conwy Trunk Road (A470) (Connecting Roads) Order 1999 (Dowlais Top To Hirwaun) (Amendment) Order 2019 / Gorchymyn Gorchymyn Cefnffordd Castell-nedd – Y Fenni (A465) (Deuoli o’r Fenni i Hirwaun a’r Ffyrdd Ymuno ac Ymadael) a Ffordd Man i’r Dwyrain o Abercynon – Man i’r Dwyrain o Ddowlais (A4060), Cefnffordd Caerdydd – Glanconwy (A470) (Ffyrdd Cysylltu) 1999 (Dowlais Top i Hirwaun) (Diwygio) 2019