Currently there is a clearway Order along the trunk road, the A487 trunk road (Port Dinorwic by-Pass, Gwynedd) Order 1994 (S.I. 1994/795).
Gorchymyn cefnffordd yr A487 (Machynlleth, Powys i fan i’r gogledd o Bont ar Ddyfi, Gwynedd) (cyfyngiadau cyflymder dros dro a gwahardd goddiweddyd) 2023’.