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A4233 Porth Relief Road and B4278 Rheola Road, Porth - Temporary Road Closure
What is happening?
CYNGOR BWRDEISTREF SIROL RHONDDA CYNON TAF (A4233 FFORDD LINIARU’R PORTH A’R B4278 – HEOL RHEOLA, PORTH) GORCHYMYN (CAU FFORDD DROS DRO) 2026
DYMA HYSBYSIAD bod Cyngor Bwrdeistref Sirol Rhondda Cynon Taf yn bwriadu gwneud Gorchymyn, ar ôl o leiaf 7 diwrnod o ddyddiad yr Hysbysiad yma, o dan Adran 14 o Ddeddf Rheoleiddio Traffig Ffyrdd 1984, fel y’i diwygiwyd gan Ddeddf Traffig Ffyrdd (Cyfyngiadau Dros Dro) 1991, a fydd yn para deunaw mis ar y mwyaf.
Mae angen cau’r rhannau canlynol o’r ffyrdd dan sylw er mwyn cynnal gwaith atgyweirio ar Bont Rheola.
Effaith y Gorchymyn fydd cau’r rhannau canlynol o ffyrdd yn ystod y dyddiadau wedi’u nodi neu hyd nes y bydd y gwaith wedi’i gwblhau:
Rhan 1 – Yr A4233, Ffordd Liniaru’r Porth
Yr A4233 – Ffordd Liniaru’r Porth (Pont Rheola Newydd) – o gylchfan yr A4058 – Ffordd y Cymer i’w chyffordd â Heol Llanwynno.
Fydd DIM mynediad ar gyfer cerbydau’r gwasanaethau brys neu gerddwyr Bydd mynediad ar gael ar gyfer cyrraedd eiddo
Hyd:
• O 8pm nos Sadwrn 25/07/2026 tan 5:00am ddydd Llun 27/07/2026
• O 8pm nos Sadwrn 01/08/2026 tan 5:00am ddydd Llun 03/08/2026
• O 8pm nos Sadwrn 08/08/2026 tan 5:00am ddydd Llun 10/08/2026
• O 8pm nos Sadwrn 15/08/2026 tan 5:00am ddydd Llun 17/08/2026
• O 8pm nos Sadwrn 22/08/2026 tan 5:00am ddydd Llun 24/08/2026
Rhan 2 – B4278 – Heol Rheola
Y B4278 – Heol Rheola, o’i chyffordd â Ffordd Fynediad Ystad Ddiwydiannol Rheola i’w chyffordd â Heol Aber-Rhondda. Hefyd Heol Aber-Rhondda o’i chyffordd â Heol Rheola i’w chyffordd â Sgwâr Tynewydd / Ffordd y Fynwent.
Bydd mynediad ar gael i gerddwyr, cerbydau’r gwasanaethau brys, ac ar gyfer cyrraedd eiddo
Hyd
• O 7.30pm nos Sul 26/07/2026 tan 5:00am ddydd Llun 27/07/2026
• O 7.30pm nos Sul 02/08/2026 tan 5:00am ddydd Llun 03/08/2026
• O 7.30pm nos Sul 09/08/2026 tan 5:00am ddydd Llun 10/08/2026
• O 7.30pm nos Sul 16/08/2026 tan 5:00am ddydd Llun 17/08/2026
• O 7.30pm nos Sul 23/08/2026 tan 5:00am ddydd Llun 24/08/2026
Llwybrau Amgen
Rhan 1:
O ochr ogleddol y rhan sydd i’w chau, ewch ar hyd Heol Llanwynno, Heol Aber-Rhondda, Heol Rheola, Stryd Porth, Heol y Gogledd, Heol Pontypridd, Pont y Cymer a’r A4058 – ffordd Liniaru’r Porth tuag ochr ddeheuol y rhan sydd i’w chau.
O ochr ddeheuol y rhan sydd i’w chau, ewch ar hyd yr A4058 – Ffordd Liniaru’r Porth, Pont y Cymer, Stryd Porth, Heol Rheola, Heol Aber-Rhondda a Heol Llanwynno tuag at ochr ddeheuol y rhan sydd i’w chau.
Cau rhan 1 a 2 ar yr un pryd
O ochr ogleddol y rhan sydd i’w chau ar yr A4233 – Ffordd Liniaru’r Porth:
Ewch ar hyd Heol Llanwynno, Heol Aber-Rhondda, Ffordd y Fynwent, Heol Brithweunydd, Heol Trealaw, Cylchfan Trealaw a’r A4058 – Heol Dinas / Heol y Cymer.
O ochr ddeheuol y rhan sydd i’w chau ar yr A4233 – Ffordd Liniaru’r Porth:
Ewch ar hyd yr A4058 Heol y Cymer/Heol Dinas, Cylchfan Trealaw, Heol Trealaw, Heol Brithweunydd, Ffordd y Fynwent, Heol Aber-Rhondda a Heol Llanwynno.
O ochr ogleddol y rhan sydd i’w chau ar y B4278 – Heol Rheola a Heol Aber-Rhondda: Ewch ar hyd Ffordd y Fynwent, Heol Brithweunydd, Heol Trealaw, Cylchfan Trealaw a’r A4058 Heol Dinas /Heol y Cymer, Pont y Cymer, Stryd Porth a Heol Rheola.
O ochr ddeheuol y rhan sydd i’w chau ar y B4278 – Heol Rheola a Heol Aber-Rhondda: Ewch ar hyd Heol Rheola, Stryd Porth, Heol y Gogledd, Heol Pontypridd, Pont y Cymer, yr A4058 – Ffordd Liniaru’r Porth, yr A4058 Ffordd y Cymer / Heol Dinas, Cylchfan Trealaw, Heol Trealaw, Heol Brithweunydd a Ffordd y Fynwent.
Dyddiad 13 Gorffennaf 2026
Andrew Wilkins
Cyfarwyddwr y Gwasanaethau Cyfreithiol a Llywodraethol 2 Llys Cadwyn, Stryd Taf, Pontypridd, CF37 4TH
RHONDDA CYNON TAFF COUNTY BOROUGH COUNCIL
(A4233 PORTH RELIEF ROAD AND B4278 RHEOLA ROAD, PORTH) (TEMPORARY ROAD CLOSURE) ORDER 2026
NOTICE IS HEREBY GIVEN that the Rhondda Cynon Taff County Borough Council, intends, 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, as amended by the Road Traffic (Temporary Restrictions) Act 1991, which will have a maximum duration of eighteen months.
The closure is necessary to facilitate repair works to the Rheola Bridge.
The effect of the Order will be to close the following lengths of roads during the specified dates and times, or until such time as the works are completed: -
Closure 1 – A4233 Porth Relief Road
A4233 Porth Relief Road (New Rheola Bridge) – from its roundabout junction with A4058 Cymmer Road to its junction with Llanwonno Road
Access WILL NOT be maintained for pedestrians or emergency services.
Access will be maintained to premises.
Duration:
• From 8.00pm on Saturday 25/07/2026 to 5.00am on Monday 27/07/2026
• From 8.00pm on Saturday 01/08/2026 to 5.00am on Monday 03/08/2026
• From 8.00pm on Saturday 08/08/2026 to 5.00am on Monday 10/08/2026
• From 8.00pm on Saturday 15/08/2026 to 5.00am on Monday 17/08/2026
• From 8.00pm on Saturday 22/08/2026 to 5.00am on Monday 24/08/2026
Closure 2 – B4278 Rheola Road
B4278 Rheola Road, from its junction with the Rheola Industrial Estate Access Road to its junction with Aber-Rhondda Road, and Aber-Rhondda Road, from its junction with Rheola Road to its junction with Tynewydd Square/Cemetery Road Access will be maintained for pedestrians, emergency services and to premises.
Duration
• From 7.30pm on Sunday 26/07/2026 to 5:00am on Monday 27/07/2026
• From 7.30pm on Sunday 02/08/2026 to 5:00am on Monday 03/08/2026
• From 7.30pm on Sunday 09/08/2026 to 5:00am on Monday 10/08/2026
• From 7.30pm on Sunday 16/08/2026 to 5:00am on Monday 17/08/2026
• From 7.30pm on Sunday 23/08/2026 to 5:00am on Monday 24/08/2026
Alternative Routes
Closure 1
From the northern side of the closure, proceed via Llanwonno Road, Aber-Rhondda Road, Rheola Road, Porth Street, North Road, Pontypridd Road, Cymmer Bridge and A4058 Porth Relief Road to the southern end of the closure.
From the southern side of the closure, proceed via A4058 Porth Relief Road, Cymmer Bridge, Porth Street, Rheola Road, Aber-Rhondda Road and Llanwonno Road to the northern side of the closure
Closure 1 and 2 at the same time
From the northern side of the closure on A4233 Porth Relief Road:
Proceed via Llanwonno Road, Aber-Rhondda Road, Cemetery Road, Brithweunydd Road, Trealaw Road, Trealaw Roundabout and A4058 Dinas Road/Cymmer Road
From the southern side of the closure on A4233 Porth Relief Road:
Proceed via A4058 Cymmer Road/Dinas Road, Trealaw Roundabout, Trealaw Road, Brithweunydd Road, Cemetery Road, Aber-Rhondda Road and Llanwonno Road
From the northern side of the closure on B4278 Rheola Road and Aber-Rhondda Road:
Proceed via Cemetery Road, Brithweunydd Road, Trealaw Road, Trealaw Roundabout and A4058 Dinas Road/Cymmer Road, Cymmer Bridge, Porth Street and Rheola Road
From the southern side of the closure on B4278 Rheola Road and Aber-rhondda Road:
Proceed via Rheola Road, Porth Street, North Road, Pontypridd Road, Cymmer Bridge, A4058 Porth Relief Road, A4058 Cymmer Road/Dinas Road, Trealaw Roundabout, Trealaw Road, Brithweunydd Road and Cemetery Road
Dated 13th July 2026
Andrew Wilkins Director of Legal and Democratic Services 2 Llys Cadwyn, Taff Street, Pontypridd, CF37 4TH
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