A55 Trunk Road - Temporary Prohibition Of Vehicles For Works

HYSBYSIAD STATUDOL

I gael copi print bras o’r Hysbysiad hwn, ffoniwch 0300 0604400 neu ebostiwch Trafnidiaeth.YGangenOrchmynion@llyw.cymru 

GORCHYMYN CEFNFFORDD YR A55 (CYFFORDD 9 (CYFNEWIDFA TREBORTH) I GYFFORDD 11 (CYFNEWIDFA LLYS Y GWYNT), BANGOR, GWYNEDD) (GWAHARDD CERBYDAU, BEICWYR A CHERDDWYR DROS DRO) 202-

MAE GWEINIDOGION CYMRU yn bwriadu gwneud Gorchymyn o dan adran 14 o Ddeddf Rheoleiddio Traffig Ffyrdd 1984 ymhen dim llai na 7 niwrnod i ddyddiad yr Hysbysiad hwn. Mae angen y Gorchymyn er mwyn gwneud gwaith ar gefnffordd yr A55, neu gerllaw iddi, rhwng Cyffordd 9 (Cyfnewidfa Treborth) a Chyffordd 11 (Cyfnewidfa Llys y Gwynt), Bangor, Gwynedd.

Effaith y Gorchymyn arfaethedig fydd gwahardd dros dro pob cerbyd, beiciwr a cherddwr rhag mynd ar y darnau o gefnffordd yr A55 a bennir yn yr Atodlen i’r Hysbysiad hwn. Disgrifir y llwybr arall yn yr Atodlen honno hefyd.

Daw’r Gorchymyn i rym ar 4 Gorffennaf 2026. Disgwylir y bydd y gwaharddiadau dros dro yn weithredol dros nos (18:00 o’r gloch – 06:00 o’r gloch) o 4 – 31 Gorffennaf 2026, neu hyd nes y caiff yr arwyddion traffig dros dro eu symud ymaith yn barhaol.

Dim ond yn ystod y dyddiadau a bennir uchod y disgwylir i’r Gorchymyn fod yn weithredol. Er hynny, bydd yn parhau’n ddilys am gyfnod o 18 mis ar y mwyaf rhag ofn y bydd angen ailamserlennu’r gwaith neu wneud gwaith canlyniadol neu waith arall.

C WYNN, Trafnidiaeth, Llywodraeth Cymru

YR ATODLEN
Y darn o gerbytffordd tua’r dwyrain y gefnffordd sy’n ymestyn o’r danbont wrth Gyffordd 9 (Cyfnewidfa Treborth) i’r drosbont wrth Gyffordd 11 (Cyfnewidfa Llys y Gwynt).

Y darn o’r ffordd ymuno tua’r dwyrain wrth Gyffordd 9 (Cyfnewidfa Treborth).
Y darnau o’r ffyrdd ymuno ac ymadael tua’r dwyrain wrth Gyffordd 10 (Cyfnewidfa Ffordd Caernarfon).

Y darn o’r ffordd ymadael tua’r dwyrain wrth Gyffordd 11 (Cyfnewidfa Llys y Gwynt).

Y gilfan sy’n gyfagos i gerbytffordd tua’r dwyrain yr A55 rhwng Cyffyrdd 10 ac 11.

Y llwybr arall
Y llwybr arall o Gyffordd 9 yw mynd ar yr A487 tua’r de i Gylchfan Tyˆ Golchi, y B4547 tua’r de, y B4547 tua’r dwyrain tuag at Bentir ac yng Ngroeslon Tyˆ Mawr dilyn yr A4244 tua’r gogledd-ddwyrain i ailymuno â’r A55 tua’r dwyrain wrth Gyffordd 11.

Dylai traffig ar gyfer Bangor dilyn yr A487 tua’r de i Gylchfan Tyˆ Golchi a’r A4087 tua’r gogledd tuag at Fangor.

Dylai traffig sy’n teithio tua’r dwyrain sy’n dymuno ymuno â’r A55 wrth Gyffordd 10 ddilyn yr A4087 tua’r de i Gylchfan Tyˆ Golchi a pharhau ar y llwybr a ddisgrifir uchod.

STATUTORY NOTICE
For a large print copy of this Notice contact 0300 0604400 or email Transportordersbranch@gov.wales 

THE A55 TRUNK ROAD (JUNCTION 9 (TREBORTH INTERCHANGE), TO JUNCTION 11 (LLYS Y GWYNT INTERCHANGE), BANGOR, GWYNEDD) (TEMPORARY PROHIBITION OF VEHICLES, CYCLISTS & PEDESTRIANS) ORDER 202-

THE WELSH MINISTERS propose, in not less than 7 days from the date of this Notice, to make an Order under section 14 of the Road Traffic Regulation Act 1984, which is necessary to undertake works on or near the A55 trunk road between Junction 9 (Treborth Interchange) and Junction 11 (Llys y Gwynt Interchange), Bangor, Gwynedd.

The effect of the proposed Order will be to temporarily prohibit all vehicles, cyclists and pedestrians from proceeding on the lengths of the A55 trunk road specified in the Schedule to this Notice. The alternative route is also described therein.

The Order will come into force on 4 July 2026. The temporary prohibitions are expected to operate overnight (18:00 – 06:00 hours) from 4 – 31 July 2026, or until the temporary traffic signs are permanently removed.

Although the Order is only expected to operate during the dates specified above it will remain valid for a maximum period of 18 months, as a contingency, should the work need to be rescheduled or consequential or other work is required.

C WYNN, Transport, Welsh Government

SCHEDULE
The length of the eastbound carriageway of the trunk road that extends from the underbridge at Junction 9 (Treborth Interchange) to the overbridge at Junction 11 (Llys y Gwynt Interchange).

The length of the eastbound entry slip road at Junction 9 (Treborth Interchange).
The lengths of the eastbound entry and exit slip roads at Junction 10 (Caernarfon Road Interchange).

The length of the eastbound exit slip road at Junction 11 (Llys y Gwynt Interchange).
The lay-by adjacent to the A55 eastbound carriageway between Junctions 10 and 11.

Alternative route
The alternative route from Junction 9 is via the southbound A487 to Tyˆ Golchi Roundabout, the southbound B4547, the eastbound B4547 towards Pentir and at Groeslon Tyˆ Mawr follow the north-eastbound A4244 to rejoin the eastbound A55 at Junction 11. Traffic for Bangor should follow the southbound A487 to Tyˆ Golchi Roundabout and the northbound A4087 towards Bangor.

Eastbound traffic wishing to join the A55 at Junction 10 should follow the southbound A4087 to Tyˆ Golchi Roundabout and continue on the route described above.