- A484 between A487 and Ceredigion boundary, Ceredigion (Grid ref SN200452)
- A484 between Carmarthenshire boundary and A475E, Carmarthenshire (Grid ref SN300410)
- A484 between A475E and A475W, Carmarthenshire (Grid ref SN305404)
- A484 between A475W and A486, Carmarthenshire (Grid ref SN366400)
- A484 between B4333 and A486, Carmarthenshire (Grid ref SN373300)
- A484 between B4333 and A485, Carmarthenshire (Grid ref SN411248)
- A484 between A48 and B4309, Carmarthenshire (Grid ref SN412179)
- A484 between A4242 and A40, Carmarthenshire (Grid ref SN414198)
- A484 between B4308 Monksford St and B4309, Carmarthenshire (Grid ref SN417100)
- A484 between B4308 Monksford St and Maesyrhaf, Pwll, Carmarthenshire (Grid ref SN418020)
- A484 between A4242 and A4243, Carmarthenshire (Grid ref SN421207)
- A484 between Maesyrhaf, Pwll and A476, Carmarthenshire (Grid ref SN499006)
- A484 between A476 and A4124, Carmarthenshire (Grid ref SN509005)
- A484 between A476 and A4138, Carmarthenshire (Grid ref SN512007)
- A484 between A4138 and Carmarthenshire boundary, Carmarthenshire (Grid ref SS535992)
- A484 between Swansea boundary and A4240, Swansea (Grid ref SS561980)
- A484 between A4240 and A483, Swansea (Grid ref SS600972)