The section Moat Lane to Newtown has since been renumbered A489, and from Moat Lane to Glantwymyn the A470 replaced the A489 which ran all the way from Machynlleth to the A49 road north of Craven Arms in south Shropshire.
The section Moat Lane to Newtown has since been renumbered A489. The A470 replaced the A489. This was from Moat Lane to Glantwymyn. This A489 ran all the way from Machynlleth to the A49 road north of Craven Arms in south Shropshire.