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Image
 ![Map i ddangos gwaith cyffordd Croesbychan](/sites/default/files/2021-10/Croesbychan%20CY%20Hydref%2021.png)





Map i ddangos gwaith cyffordd Croesbychan



### Beth ydyn ni'n ei wneud


* symud ac ailblannu coetir hynafol
* adeiladu ffordd dros dro
* symud cyfleustodau
* adeiladu pont dros reilffordd Cwm Nedd
* adeiladu ffordd a chylchfannau newydd


Byddwn yn adeiladu cyffordd newydd yn lle’r un sydd yno nawr. Caiff y gyffordd a’r ffordd eu hadeiladu yn bennaf ar arglawdd hyd at 42tr (13m) o uchder.


Byddwn hefyd yn adeiladu traphont dros Nant Melyn, a fydd yn cario’r A465 newydd.  Bydd Traphont bresennol Nant Melyn yn cael ei neilltuo ar gyfer Defnyddwyr Di\-Beiriant.


Byddwn yn adeiladu ffordd dros dro i greu lle i adeiladu’r ffordd barhaol.


Caiff y gwaith ei wneud fesul cam.


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


Rydym wedi:


* cynnal arolygon amgylcheddol
* clirio llystyfiant i baratoi ar gyfer dechrau’r gwaith
* dechrau paratoi’r safle i symud cyfleustodau
* adeiladu cylchfan dros dro i’r gorllewin o danbont Court Lodge
* codi ffensys
* adeiladu dwy gylchfan barhaol a ffyrdd cysylltu i ddiweddaru’r rhwydwaith ffyrdd lleol
* dechrau adeiladu traphont newydd dros Nant Melyn
* creu cynefin newydd ar gyfer pathewod
* dechrau adeiladu ategwaith pont Rheilffordd Cwm Nedd





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





Y gwaith yng Nghroesbychan



### **Y camau nesaf**


* Parhau i fonitro cynefinoedd pathewod
* Bwrw ymlaen ag adeiladu pont Rheilffordd Cwm Nedd a thanbontydd Croesbychan a Court Lodge
* Parhau i adeiladu Traphont Nant Melyn


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







Translation:


 



Image
 ![map showing Croesbychan junction plan](/sites/default/files/2021-10/Croesbychan%20EN%20October%2021.png)





Map showing Croesbychan junction plan



### What we’re doing


* moving and re\-planting ancient woodland
* laying a temporary road
* moving utilities
* building a bridge over the Vale of Neath railway line
* building a new road and roundabouts


We will build a new junction to replace the existing one. The junction and the road will be built mostly on embankment up to 42 ft (13m) high.


We will also build a viaduct over the Nant Melyn watercourse, which will carry the new A465\. The existing Nant Melyn Viaduct will be used by Non\-Motorized Users (NMUs) only.


We will build a temporary road to provide space for construction of the permanent road.


The work will be done in phases.


### Current progress


We have:


* carried out environmental surveys
* cleared vegetation ready for work to start
* started to prepare the site to move utilities
* built a temporary roundabout to the west of Court Lodge Underbridge
* installed fencing
* built two new permanent roundabouts and connecting roads to update the local road network
* began building the new Nant Melyn Viaduct
* created new habitats for dormice and enhanced existing dormice habitats
* started building the Vale of Neath Railway bridge abutments





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





Works at Croesbychan



### Next steps


* Continue to monitor Dormice habitats
* Ongoing building of Vale of Neath Railway bridge, Croesbychan and Court Lodge underbridges
* Continue building the Nant Melyn Viaduct


For traffic news on this junction, visit Traffic Wales.