- A4054 between A465 and A470, Merthyr Tydfil (Grid ref SO027084)
- A4054 between A4102 W and A465, Merthyr Tydfil (Grid ref SO034078)
- A4054, Cyfarthfa, Merthyr Tydfil (Grid ref SO046061)
- A4054, Park, Merthyr Tydfil (Grid ref SO046063)
- A4054, Town, Merthyr Tydfil (Grid ref SO047060)
- A4054 between A4102 (S) and A4102 (N), Merthyr Tydfil (Grid ref SO049056)
- A4054 between A4060 and A4102, Merthyr Tydfil (Grid ref SO054050)
- A4054 between B4285 Bridge St, Troedyrhiw and A4060, Merthyr Tydfil (Grid ref SO067031)
- A4054 between Commercial Terrace, Treharris and B4285 Bridge St, Troedyrhiw, Merthyr Tydfil (Grid ref SO076000)
- A4054 between A470/A4223 and A4054 Merthyr Rd, Rhondda, Cynon, Taff (Grid ref ST077904)
- A4054 between A470 roundabout and A4054 Common Rd, Rhondda, Cynon, Taff (Grid ref ST080901)
- A4054 between A4054 Common Rd and Jones St, Gilfynydd, Rhondda, Cynon, Taff (Grid ref ST083912)
- A4054 between A4054 main route and A470, Rhondda, Cynon, Taff (Grid ref ST086947)
- A4054 between Jones St, Gilfynydd and A4054 spur to A470S, Rhondda, Cynon, Taff (Grid ref ST086930)
- A4054 between A4054 spur to A470S and Rhondda, Cynon, Taff boundary, Rhondda, Cynon, Taff (Grid ref ST090951)
- A4054 between Merthyr Tydfil boundary and A472, Merthyr Tydfil (Grid ref ST092954)
- A4054 between A470 roundabout Upper Boat and A470 roundabout Glyntaff, Rhondda, Cynon, Taff (Grid ref ST095876)
- A4054 between A472 and Commercial Terrace, Treharris, Merthyr Tydfil (Grid ref ST096965)
- A4054 between Cardiff Rd roundabout and A470, Rhondda, Cynon, Taff (Grid ref ST112860)
- A4054 between Rhondda, Cynon, Taff boundary and A465, Rhondda, Cynon, Taff (Grid ref ST119841)
- A4054 between A4054 Cardiff rd and A470/A468, Rhondda, Cynon, Taff (Grid ref ST120853)
- A4054 between A470 and Cardiff boundary, Cardiff (Grid ref ST127827)
- A4054 between M4/A470 roundabout and B4262 roundabout, Cardiff (Grid ref ST136820)
- A4054 between Pantmawr Rd and M4, Cardiff (Grid ref ST142812)
- A4054 between A4119 and Pantmawr Rd, Cardiff (Grid ref ST148800)