Junctions
| A470 (T) | ||
| Northbound exits | Junction | Southbound exits |
| (M4 (E)), Newport, University Hospital, Cardiff West, Cardiff Airport A48 | Gabalfa Interchange | End of A470 (T) |
| Start of A470 (T) | (M4 (E)), Newport, University Hospital A48 | |
| Thornhill A469 Exit only |
Cross Inn Junction | Thornhill A469 |
| M4 Tongwynlais A4054 |
Coryton Interchange | M4 A4054 |
| Taff's Well A4054 Radyr B4262 |
Taff's Well Interchange | Tongwynlais A4054 Radyr B4262 |
| Trefforest Ind. Est. A4054 Caerphilly A468 |
Nantgarw Interchange | Taff's Well A4054 Caerphilly A468 |
| Rhydyfelin A4054 | Upper Boat Interchange | Trefforest Ind. Est. A4054 |
| Llantrisant A473 Exit only |
Treforest Interchage | Access only |
| Pontypridd, Rhondda Valleys A4058 Exit only |
Ynsangharad Interchange | Access only |
| Access only | Bridge Street Interchange | Pontypridd A4223 Rhondda Valleys (A4058) Llantrisant (A473) Exit only |
| Abercynon B4275 Exit only |
Abercynon Junction | Access only |
| Aberdare A4059 Ystrad Mynach A472 Aberfan A4054 |
Quakers Yard Roundabout | Ystrad Mynach A472 Aberfan A4054 Aberdare A4059 |
| Pentrebach A4060 Abergavenny (A465) |
Pentrebach Roundabout | Pentrebach A4060 Abergavenny (A465) |
| Town centre, Rhyd-y-car A4102 | Merthyr Roundabout | Town centre, Rhyd-y-car A4102 |
| Gelli-deg Cyfartha A4102 |
Gellideg Roundabout | Cyfartha A4102 Gelli-deg |
| Hirwaun, Neath, Abergavenny, Cefn Coed y Cymmer A465 | Cefn-Coed Roundabout | Hirwaun, Neath, Abergavenny A465 |
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