- A4233 between Institute St, Maerdy and Highland Place, Blaengwawr, Aberdare, Rhondda, Cynon, Taff (Grid ref SN973000)
- A4233 between Highland Place, Blaengwawr and A4059, Rhondda, Cynon, Taff (Grid ref SO001025)
- A4233 between A4058 Cemetery Rd, Porth and Institute St, Maerdy, Rhondda, Cynon, Taff (Grid ref ST010958)
- A4233 between A4119 and Rhiwgarn, Trebanog, Rhondda, Cynon, Taff (Grid ref ST012890)
- A4233 between Rhiwgarn, Trebanog and A4058, Rhondda, Cynon, Taff (Grid ref ST020903)
- A4233 between A4225 and A4058, Rhondda, Cynon, Taff (Grid ref ST025913)
- A4233 between A4058 Porth St and A4058 Cemetery Rd, Rhondda, Cynon, Taff (Grid ref ST025915)