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Image
 ![Map yn dangos y newidiadau i gyffordd Hirwaun.](/sites/default/files/2021-11/Content%20-%20Map%20-%20Hirwaun%20-%20Oct%2021%20-%20CY.png)





Map yn dangos y newidiadau i gyffordd Hirwaun.



### **Beth ydyn ni’n ei wneud**


* ymchwiliadau archeolegol
* dymchwel tai
* gosod ffordd dros dro
* adeiladu pontydd
* creu draeniau a chwlfertau
* symud cyfleustodau
* adeiladu cylchfan


I adeiladu’r ffordd hon, byddwn yn palu hyd at ddyfnder o 40 troedfedd (12\.5 metr) i’r arwyneb.


Byddwn yn adeiladu pont dros yr A465 i sicrhau mynediad at Fferm Wynt Mynydd Bwllfa.  

  

Byddwn yn adeiladu cylchfan i Dre\-waun i gysylltu Pen\-y\-waun a Hirwaun.  Byddwn yn adeiladu 2 bont i gysylltu Heol Aberhonddu â’r A465\.


Byddwn yn adeiladu ffordd dros dro i greu lle ar gyfer y ffordd newydd. Ni fydd cyffordd newydd Hirwaun yn cysylltu â’r A465\.


### **Sut mae’r gwaith yn mynd yn ei flaen**


Rydym wedi:


* clirio llystyfiant a’r safle yn barod i'r gwaith adeiladu
* gwneud gwaith ymchwilio archaeolegol ger ffordd fynediad y fferm wynt
* chwalu adeilad o fewn ardal y cynllun.
* adeiladu is\-strwythur newydd ar gyfer Pont Gorllewin Hirwaun, a codi trawstiau concrit wedi’u rhag\-gastio ar gyfer adeiladu dec y bont.
* adeiladu priffordd dros dro newydd i greu lle i adeiladu pont Dwyrain Hirwaun.
* gwyro traffig ar gylchfan dros dro er mwyn caniatáu adeiladu y bont.
* gosod cwlfert draenio newydd o dan Ffordd Hirwaun.
* cychwyn adeiladu pont Dwyrain Hirwaun.
* agor ffordd dros dro ar yr A465 er mwyn creu lle i adeiladu waliau cynnal Trewaun.





Image
 ![Works at Trewaun](/sites/default/files/2022-01/Trewaun%201.jpg)





Y gwaith yn Nhrewaun






Image
 ![Works at Trewaun](/sites/default/files/2022-01/Trewaun%202.jpg)





Y gwaith yn Nhrewaun



### **Y camau nesaf**


* adeiladu wal gynnal wrth ymyl y tai yn Nhrewaun.
* ymestyn y ffordd dros\-dro o Dramffordd i gylchfan dros\-dro newydd i'w lleoli i'r gorllewin o'r cynllun presennol ar gyffordd Hirwaun (Trewaun).
* adleoli'r gylchfan dros dro yn Hirwaun (Trewaun) i leoliad newydd ymhellach i'r dwyrain yn Windfarm Road.
* adeiladu ffordd A465 newydd tua'r gorllewin rhwng Castell\-nedd a Hirwaun.
* gwaith parhaus i adeiladu trosbont Dwyrain Hirwaun a fydd yn cysylltu Ffordd Aberhonddu a Ffordd Hirwaun (A4059\).


I gael newyddion traffig ar y gyffordd hon, ewch i Traffig Cymru.


 







Translation:


 



Image
 ![Map showing Hirwaun junction plans.​​​​](/sites/default/files/2021-11/Content%20-%20Map%20-%20Hirwaun%20-%20Oct%2021%20-%20EN.png)





Map showing Hirwaun junction plans.​​​​



### What we’re doing


* archaeological investigations
* demolishing existing properties
* laying temporary road
* building bridges
* installing drainage and culverts
* moving utilities
* building a roundabout


To build this road, we will cut up to 40 feet (12\.5 metres) into the surface.  

  

We will build a bridge built over the A465 to provide access to the Mynydd Bwllfa wind farm.  

  

We will build a roundabout at Trewaun to connect Penywaun and Hirwaun. We will build 2 bridges to connect Brecon road to the A465\.


We will build a temporary road to provide space for the new road. There will be no access to the A465 at the new Hirwaun Junction.


### **Current progress**


We have:


* cleared vegetation and site to prepare for construction.
* undertaken archaeological investigation next to the windfarm access road.
* diverted utilities to move services from the construction area.
* demolished building within the scheme area.
* constructed new Hirwaun West Bridge substructure, erected precast concrete beams for bridge deck construction.
* constructed new temporary highway to create space to build the Hirwaun East bridge.
* diverted traffic onto temporary roundabout to allow for bridge construction.
* installed new drainage culvert under Hirwaun Road.
* commenced construction of the Hirwaun East bridge.
* temporary road opened on A465 to create space to build Trewaun retaining walls.





Image
 ![Works at Trewaun](/sites/default/files/2022-01/Trewaun%201.jpg)





Works at Trewaun






Image
 ![Works at Trewaun](/sites/default/files/2022-01/Trewaun%202.jpg)





Works at Trewaun



### **Next steps**


* constructing a retaining wall next to the houses in Trewaun.
* extending the temporary road from Tramway to a new temporary roundabout to be located to the west of the current layout at the Hirwaun (Trewaun) junction.
* relocating the temporary roundabout at Hirwaun (Trewaun) to a new location further east at Windfarm Road.
* commence construction of new westbound A465 carriageway between Vale of Neath and Hirwaun.
* ongoing work to construct Hirwaun East overbridge that will connect Brecon Road to Hirwaun Road (A4059\).


For traffic news on this junction, visit Traffic Wales.