|Location Map ( geo)|
|A40, A472, A4059|
|Junctions related to the A470|
|Abercanaid Roundabout • Bala Junction • Bridge Street Interchange • Broadway Interchange • Brynich roundabout • Cefn Coed Roundabout • Cemmaes Road Roundabout • Coryton Interchange • Cross Foxes • Gabalfa Interchange • Gellideg roundabout • Glan Conwy Interchange • Glyntaff Interchange • Llangurig roundabout • Llanidloes roundabout • Llyswen junction • Mallwyd • Moat Lane Junction • Nantgarw Interchange • Rhyd-y-car roundabout • Taffs Well Interchange • Tarell roundabout • Upper Boat Interchange|
Abercynon Roundabout is the first at-grade roundabout on the A470 north of Cardiff. It was originally planned as a Roundabout interchange in the 1960s but by the time it opened in the 1990s it was downgraded to a roundabout.
|Cardiff/Caerdydd, M4, Pontypridd|
|Ystrad Mynach, Aberfan (A4054), Treharris, Nelson, Abercynon, Cilfynydd, Park and Ride|
|Aberdare/Aberdar, Mountain Ash/Aberpennar, Abercynon (West)|