- A4085 between C-road, Croesywaun and A487 triangle, Gwynedd (Grid ref SH517600)
- A4085 between A487 and A498, Gwynedd (Grid ref SH600453)
- A4085 between A498 and C-road just north of Croesywaun, Gwynedd (Grid ref SH575500)
- A4086 between C-road just north of Dolbadarn Castle and A498, Gwynedd (Grid ref SH600587)
- A4086 between A487 roundabout and B4547, Gwynedd (Grid ref SH550629)
- A4086 between B4547 and C-road just north of Dolbadarn Castle, Gwynedd (Grid ref SH581600)
- A4086 between A498 and Gwynedd boundary, Gwynedd (Grid ref SH661559)
- A4086 between B4419 Bont Bridd (Bridge St) and A487 roundabout, Gwynedd (Grid ref SH481627)
- A4087 between A487 and A55, Gwynedd (Grid ref SH550692)
- A4087 between A55 and Toronnen, Glan Adda, Gwynedd (Grid ref SH563700)
- A4087 between Toronnen, Glan Adda and A5, Gwynedd (Grid ref SH572712)
- A4212 between B4391 and A494, Gwynedd (Grid ref SH830400)
- A4212 between A470 and B4391, Gwynedd (Grid ref SH800384)
- A4244 between A4086 and A5(T), Gwynedd (Grid ref SH586678)
- A458 between A470 and Gwynedd boundary, Gwynedd (Grid ref SH890124)
- A470 between A487 and B4391, Gwynedd (Grid ref SH700403)
- A470 between A487 and A494, Gwynedd (Grid ref SH750183)
- A470 between A496 and A4212, Gwynedd (Grid ref SH720200)
- A470 between B4391 and A496, Gwynedd (Grid ref SH700460)
- A470 between A494 and A493, Gwynedd (Grid ref SH720179)
- A470 between A4212 and A487, Gwynedd (Grid ref SH700382)
- A470 between A487 and A487, Gwynedd (Grid ref SH800171)
- A470 between A493 and A496, Gwynedd (Grid ref SH717190)
- A470 between A496 and Gwynedd boundary, Gwynedd (Grid ref SH697472)
- A470 between Gwynedd boundary and A458, Gwynedd (Grid ref SH862122)
- A487 between B4411 and A499, Gwynedd (Grid ref SH471550)
- A487 between A497 and A4085, Gwynedd (Grid ref SH600385)
- A487 between A493 and B4405, Gwynedd (Grid ref SH735100)
- A487 between A4086 and A4087, Gwynedd (Grid ref SH500653)
- A487 between A496W and A496E, Gwynedd (Grid ref SH666408)
- A487 between A499 and A4085 triangel, Gwynedd (Grid ref SH483600)
- A487 between A497 and A498E, Gwynedd (Grid ref SH562400)
- A487 between road to Menai Rd and A5122 / A4080, Gwynedd (Grid ref SH557710)
- A487 between A4085 and A496W, Gwynedd (Grid ref SH640400)
- A487 between A4087 and A5, Gwynedd (Grid ref SH546696)
- A487 between A4085 and A4086, Gwynedd (Grid ref SH482626)
- A487 between A498S and A498E, Gwynedd (Grid ref SH560401)
- A487 between A470 and A496E, Gwynedd (Grid ref SH686400)
- A487 between B4405 and A470, Gwynedd (Grid ref SH750132)
- A487 between A498S and B4411, Gwynedd (Grid ref SH500431)
- A487 between A5 and road to Menai Rd, Gwynedd (Grid ref SH552702)
- A487 between A497 and A4971/High Street, Gwynedd (Grid ref SH593389)
- A487 between A4971/High Street and A498/Dublin Street, Gwynedd (Grid ref SH559398)
- A487 between A4085/High Street and A497/A487 Minffordd, Gwynedd (Grid ref SH604386)
- A487 between A498S and A498E, Gwynedd (Grid ref SH560401)
- A493 between C-road to Pen-y-Bryn and A470, Gwynedd (Grid ref SH700185)
- A493 between C-road to Tywyn and B4405, Gwynedd (Grid ref SH600019)
- A493 between C-road south of Tywyn and A487, Gwynedd (Grid ref SH594000)
- A493 between B4405 and C-road to Pen-y-Bryn, Gwynedd (Grid ref SH600110)
- A493 between C-road south of Tywyn and C-road at Pall Mall, nroth of Tywyn, Gwynedd (Grid ref SH585007)
- A494 between A4212 and Gwynedd boundary, Gwynedd (Grid ref SJ000404)
- A494 between A470 and B4403, Gwynedd (Grid ref SH800216)
- A494 between B4403 and A4212, Gwynedd (Grid ref SH900332)
- A496 between C-road Bryn Glas/Cilfor and A487, Gwynedd (Grid ref SH659400)
- A496 between A496 Jubilee Rd, Barmouth (Abermaw) and A470, Gwynedd (Grid ref SH700194)
- A496 between B4573 and B4573, Gwynedd (Grid ref SH600352)
- A496 between A487 and B4391, Gwynedd (Grid ref SH680412)
- A496 between B4573 and C-road Bryn Glas/Cilfor, Gwynedd (Grid ref SH620367)
- A496 between B4391 and A470, Gwynedd (Grid ref SH689420)
- A496 between A496 Church St, Barmouth (Abermaw) and B4573, Gwynedd (Grid ref SH600179)
- A497 between A499 and A499, Gwynedd (Grid ref SH370350)
- A497 between A498 and A487, Gwynedd (Grid ref SH560391)
- A497 between A499, Pwllheli and B4411, Criccieth, Gwynedd (Grid ref SH400365)
- A497 between B4417 Pen-y-Bryn and A497 Yr Ala (Ala Rd), Gwynedd (Grid ref SH305400)
- A497 between B4411, Criccieth and A498, Gwynedd (Grid ref SH550395)
- A497 between A4971/Penamser Road and A487, Gwynedd (Grid ref SH597384)
- A497 between A4971/Penamser Road and A487 Minffordd, Gwynedd (Grid ref SH597384)
- A4971 between A4971/Penamser Road and A487, Gwynedd (Grid ref SH566393)
- A4971 between A4971/Penamser Road and A487, Gwynedd (Grid ref SH566393)
- A498 between A4085 and A4085, Gwynedd (Grid ref SH588480)
- A498 between A497 and A487, Gwynedd (Grid ref SH556400)
- A498 between A487 Dublin St and A4085, Gwynedd (Grid ref SH593450)
- A498 between A4085 and A4086, Gwynedd (Grid ref SH600489)
- A499 between Lon Sarn Bach, Abersoch and B4413, Llanbedrog, Gwynedd (Grid ref SH318300)
- A499 between B4413, Llanbedrog and A497, Gwynedd (Grid ref SH350342)
- A499 between B4354 Y Ffor and B4417 Llanaelhaearn, Gwynedd (Grid ref SH395400)
- A499 between B4417 Llanaelhaearn and A487, Gwynedd (Grid ref SH400484)
- A499 between A497 Pwllheli and B4354 Y Ffor, Gwynedd (Grid ref SH383360)
- A5 between A487 and A4087, Gwynedd (Grid ref SH560714)
- A5 between A55 and B4409, Gwynedd (Grid ref SH600692)
- A5 between Rhodfa Penrhyn (Penrhyn Ave) and A55, Gwynedd (Grid ref SH592720)
- A5 between Gwynedd boundary and A487, Gwynedd (Grid ref SH557713)
- A5 between A4087 and Stryd Fawr (High St), Bangor, Gwynedd (Grid ref SH578720)
- A5 between Gwynedd boundary and Gwynedd boundary, Gwynedd (Grid ref SJ027437)
- A5 between B4409 and Gwynedd boundary, Gwynedd (Grid ref SH638632)
- A5 between Stryd Fawr (High St), Bangor and Rhodfa Penrhyn (Penrhyn Rd), Gwynedd (Grid ref SH591724)
- A5 between Gwynedd boundary and A487, Gwynedd (Grid ref SH557713)
- A55 between A4087 and A5, Gwynedd (Grid ref SH570694)
- A55 between A5 / A5122 and Gwynedd boundary, Gwynedd (Grid ref SH600700)
- A55 between A487 and A4087, Gwynedd (Grid ref SH550697)
- A55 between Gwynedd boundary and A487, Gwynedd (Grid ref SH545705)
- B4354, Near Chwilog, Gwynedd (Grid ref SH447379)
- B4366, Ffordd Bethel / Bethel Road, Gwynedd (Grid ref SH485631)
- B4366, Ffordd Bethel, Gwynedd (Grid ref SH520651)
- B4410, N/a, Gwynedd (Grid ref SH634418)
- B4411, Between Ciccieth and Rhoslan, Gwynedd (Grid ref SH483402)
- B4413, N/a, Gwynedd (Grid ref SH231323)
- B4413, No name, Gwynedd (Grid ref SH189281)
- B4417, Gwynedd (Grid ref SH269392)
- C, Fford Cader Idris, Gwynedd (Grid ref SH723176)
- C, Ffordd Glynne / Glynne Road, Gwynedd (Grid ref SH583726)
- C, Gwynedd (Grid ref SH507650)
- C, Lon Sarn Bach, Gwynedd (Grid ref SH305269)
- C, North of Pen-Sarn & Mynachdy Gwyn on Lleyn Penninsula (was wst of Blaenlliw Isaf), Gwynedd (Grid ref SH798333)
- C, No name, Gwynedd (Grid ref SH712346)
- C, Gwynedd (Grid ref SH761277)
- U, Ffordd Carneddi (carneddi Road), Gwynedd (Grid ref SH625672)
- U, Near Penyffridd, Gwynedd (Grid ref SH504568)
- U, Between Pont-y-Gain & Blaen-Lliw (by Moel-y-Feidiog forest), Gwynedd (Grid ref SH437467)
- U, Penycaerau, nr Aberdaron, Gwynedd (Grid ref SH200272)
- U, N/a, Gwynedd (Grid ref SH605058)
- U, Adwy Ddu, Gwynedd (Grid ref SH606387)
- U, Glan-y-wern, Gwynedd (Grid ref SH457397)