- A487 between Cross Square and New St, Pembrokeshire (Grid ref SM754255)
- A487 between Cross Square and Nun St, Pembrokeshire (Grid ref SM755255)
- A487 between A487 merge and Cross Square (St Davids), Pembrokeshire (Grid ref SM800243)
- A487 between A487 New St, St Davids and B4331, Pembrokeshire (Grid ref SM800278)
- A487 between B4331 and A4219, Pembrokeshire (Grid ref SM900330)
- A487 between A4219 and A40E, Pembrokeshire (Grid ref SM940369)
- A487 between A4076 and Dew Street, Pembrokeshire (Grid ref SM947149)
- A487 between A4076S and A487 merge, Pembrokeshire (Grid ref SM949153)
- A487 between Dew Street and City Road, Pembrokeshire (Grid ref SM949154)
- A487 between A487/A40 and A40, Pembrokeshire (Grid ref SM950375)
- A487 between City Road and A487, Pembrokeshire (Grid ref SM951157)
- A487 between A487 merge and A40, Pembrokeshire (Grid ref SM953160)
- A487 between A40 and B4329, Pembrokeshire (Grid ref SM989375)
- A487 between B4329 and A40S, Pembrokeshire (Grid ref SN000379)
- A487 between B4329 and B4582, Pembrokeshire (Grid ref SN154400)
- A487 between B4582 and Pembrokeshire boundary, Pembrokeshire (Grid ref SN160434)
- A487 between B4582 and Pembrokeshire boundary, Pembrokeshire (Grid ref SN160435)
- A487 between Ceredigion boundary and A478, Ceredigion (Grid ref SN177448)
- A487 between Ceredigion boundary and A478, Ceredigion (Grid ref SN179450)
- A487 between A478 and A484, Ceredigion (Grid ref SN181454)
- A487 between A484 and B4333, Ceredigion (Grid ref SN220483)
- A487 between B4333 and A486, Ceredigion (Grid ref SN400540)
- A487 between A486 and B4342W, Ceredigion (Grid ref SN407550)
- A487 between B4342W and A482, Ceredigion (Grid ref SN444601)
- A487 between B4411 and A499, Gwynedd (Grid ref SH471550)
- A487 between A4085 and A4086, Gwynedd (Grid ref SH482626)
- A487 between A499 and A4085 triangel, Gwynedd (Grid ref SH483600)
- A487 between A482 and A485, Ceredigion (Grid ref SN500651)
- A487 between A498S and B4411, Gwynedd (Grid ref SH500431)
- A487 between A4086 and A4087, Gwynedd (Grid ref SH500653)
- A487 between A4087 and A5, Gwynedd (Grid ref SH546696)
- A487 between A5 and road to Menai Rd, Gwynedd (Grid ref SH552702)
- A487 between road to Menai Rd and A5122 / A4080, Gwynedd (Grid ref SH557710)
- A487 between A4971/High Street and A498/Dublin Street, Gwynedd (Grid ref SH559398)
- A487 between A498S and A498E, Gwynedd (Grid ref SH560401)
- A487 between A498S and A498E, Gwynedd (Grid ref SH560401)
- A487 between A497 and A498E, Gwynedd (Grid ref SH562400)
- A487 between A487 Dan Dre (Mill St) and A487 Northgate St, Ceredigion (Grid ref SN583816)
- A487 between A487 Bridge St (Heol-y-Bont) and A487 Northgate St, Ceredigion (Grid ref SN583814)
- A487 between A487 Bridge St (Heol-y-Bont) and A487 Northgate St, Ceredigion (Grid ref SN584816)
- A487 between A487 split and A44, Ceredigion (Grid ref SN587818)
- A487 between A4120 and A487 Dan Dre (Mill St), Ceredigion (Grid ref SN590802)
- A487 between A485 and A4120, Ceredigion (Grid ref SN591786)
- A487 between A4120 and A4120, Ceredigion (Grid ref SN592799)
- A487 between A497 and A4971/High Street, Gwynedd (Grid ref SH593389)
- A487 between A44 and Maeshendre, Ceredigion (Grid ref SN599821)
- A487 between A497 and A4085, Gwynedd (Grid ref SH600385)
- A487 between A4085/High Street and A497/A487 Minffordd, Gwynedd (Grid ref SH604386)
- A487 between Maeshendre, Aberystwyth and A4159, Ceredigion (Grid ref SN618830)
- A487 between A4159 and B4353, Ceredigion (Grid ref SN624850)
- A487 between A4085 and A496W, Gwynedd (Grid ref SH640400)
- A487 between B4353 and Ceredigion boundary, Ceredigion (Grid ref SN665937)
- A487 between A496W and A496E, Gwynedd (Grid ref SH666408)
- A487 between A470 and A496E, Gwynedd (Grid ref SH686400)
- A487 between Powys boundary and A489, Powys (Grid ref SH731000)
- A487 between A493 and B4405, Gwynedd (Grid ref SH735100)
- A487 between A489 and A493, Powys (Grid ref SH745010)
- A487 between B4405 and A470, Gwynedd (Grid ref SH750132)