Motorway gantry sign
A gantry spanning the motorway with blue overhead signs indicating one lane exiting and two continuing ahead, and the following text.
Left lane destinations: A465 ; Castell-Nedd; Neath; Merthyr Tudful; Merthyr Tydfil.
Right-hand two lanes destinations: Caerfyrddin; Carmarthen M4 .
Junction number: 43.
The A465 Heads of the Valleys Road ends here, having traversed the hills and valleys from Abergavenny, mirroring the M4's journey across the bottom of the Welsh Valleys.