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Rhigos junction (Rhigos road/A465 roundabout)

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Satellite map showing changes at Rhigos junction
Map showing Rhigos junction plans.

Purpose

The Rhigos junction will connect Hirwaun, Rhigos road, A4059, Tower road and the A465.

What we’re doing

  • archaeological investigations
  • building temporary road
  • moving utilities
  • installing culverts
  • building new road
  • building bridges

We will raise the road to cross over the new junction and will build a bridge between the roundabouts.

We will re-align the A4061 Rhigos road for the new layout.

We will build a bridge to allow the A465 to pass over the Nant y Bwlch watercourse east of the junction.

We will build a road east of the Rhigos junction to take it away from the existing A465. This will pass south of the Hirwaun welfare ground and re-join the existing A465 at Trewaun.

We will build a temporary road to create space to construct the permanent road.

Hirwaun junction (Hirwaun road/Brecon road/A465 roundabout)

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A satellite map showing the junctions where work will take place
Map showing Hirwaun junction plans.

Purpose

The Hirwaun junction will connect Brecon road, Hirwaun road and the current A465 road, and allow the new A465 dual carriageway to pass below the junction.

What we’re doing

  • archaeological investigations
  • demolishing existing properties
  • building 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.

Afon Cynon to Vale of Neath

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Satellite map showing changes to Croesbychan junction
Map showing Afon Cynon junction plans.

 

Purpose

To provide new dual carriageway and maintain connection across the new dual carriageway at Pentwyn Cynon, Afon Cynon, Court Farm and the Vale of Neath.

What we're doing

  • moving utilities
  • building a bridge over the Afon Cynon and Vale of Neath railway line
  • building an underpass at Court Farm
  • building a new bridge over the A465 at Pentwyn Cynon
  • building new road 


We will build new structures to allow the A465 to pass over the Afon Cynon, Court Farm access and Vale of Neath railway.

The structures and road will be built in two halves starting with the westbound section of road.

When all traffic is moved onto the westbound section of highway, we will build the eastbound structures and road.

Pentwyn Cynon bridge will be built over the new road for Non-Motorised Users (NMUs).

Croesbychan junction

Purpose

The Croesbychan junction will connect Hirwaun and Llwydcoed and support the Cynon Valley Gateway scheme.

What we’re doing

  • moving and re-planting ancient woodland
  • building a temporary road
  • moving utilities
  • building a viaduct over the Nant Melyn river and Nant Hir reservoir
  • building a bridge over the Vale of Neath railway line
  • building 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.

Baverstock junction to Swansea road

Purpose

Baverstock junction will connect Swansea road, Merthyr road, Crematorium road and the A465.

What we’re doing

  • archaeological investigations
  • moving and re-homing great crested newt and marsh fritillary butterflies
  • building a temporary road
  • moving utilities
  • building slip roads and new road
  • building a bridge

The Baverstock junction will be a bridge over the A465 connected by 2 roundabouts. The western half of the junction will be constructed on embankment up to 52ft (16m) high. To build the eastern half, we will dig up to 55ft (17m) into the surface. 

We will build an embankment 40ft (12m) high to connect the eastern side of the junction to the road.

We will build a new road to connect Swansea road to Baverstock junction. It will run parallel to the south of the proposed A465 and will be designed for 2-way traffic.

A465/A470 junction

Purpose

The A470 junction will connect the A470 to the A465.

What we’re doing

  • building a temporary road
  • moving utilities
  • building new viaducts at Nant Ffrwd and Taf Fawr
  • building a bridge
  • junction improvements

We will build a new junction to replace the existing one at the A470/A465 roundabout.

The junction will have two roundabouts on the A470 with roads to the A465.

We are going to build a bridge to carry the A465 over the connector road between the 2 roundabouts.

We will build new viaducts to bridge the Nant Ffrwd and Taf Fawr watercourses.

We will move utilities, including overhead high voltage cables, to build the new road.

Cefn Coed

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Satellite map showing changes to Cefn coed junction
Map showing Cefn Coed plans.

Purpose

The new bridge and retaining walls at Cefn Coed will maintain connection between the north and south of Cefn Coed whilst allowing for widening of the A465 road.

What we’re doing

  • building a temporary road
  • moving utilities
  • building a new bridge at High street
  • building a new footbridge
  • widening Taf Fechan viaduct
  • building retaining walls

We will build a 688ft (210m) long wall along the A470 next to the Cefn Coed cemetery.

We will replace the High street bridge with a new structure so that we can widen the new road to the north and south.

We will strengthen and widen Taf Fechan viaduct to carry the new A465 road.

We will build a road to run east of the Taf Fechan viaduct for about half a mile (0.8 km). The road will be built in a series of cuttings up to 52ft (16m) and on embankments up to 44ft (13.5m) high.

Prince Charles hospital junction

Purpose

Prince Charles hospital junction will provide access to the Prince Charles hospital, Gurnos ring road and Bryniau road.

What we’re doing

  • building a retaining wall
  • building a link road
  • moving utilities
  • installing culverts
  • building a roundabout and bridges
  • building Bryniau road bridge

We will build 2 bridges to allow the junction on this road to pass over the A465.

We will build walls either side of the road to support the slip roads.

We will widen the existing road between the Prince Charles Hospital and Dowlais junctions.

We will build a new bridge at Bryniau road to provide access to Galon Uchaf.

We will divert utilities to allow the new road to be built, including 2 large water mains.

Pant industrial estate

Purpose

To maintain access from the industrial estate to Pant road.

What we’re doing

  • building a temporary car park 
  • realigning the Pant industrial estate access road
  • building a viaduct

We will replace the Pant viaduct with a new bridge. We will realign the road from Pant road to the Pant industrial estate to accommodate this new bridge.

Dowlais Top junction

Purpose

Dowlais Top junction will provide access to the A4060, Dowlais Top high street and Pengarnddu industrial estate.

What we're doing

  • moving utilities
  • building a temporary road
  • building a slip road
  • building a bridge at Jones street
  • building bridges
  • creating lapwing habitat

The junction will have 2 roundabouts which will replace the existing single roundabout. We will build a bridge to carry the A465 over the road between the 2 roundabouts so that it joins the A465 section 4 dual carriageway.

The road will be built on embankment up to 30ft (9m) above the existing level.

Temporary road will be built to provide space for construction of the permanent road.

We will create a new lapwing habitat to the east of the junction.

We will move utilities, including overhead high voltage cables to build the new road.

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