Further Improvements Along A4059

Further improvements along the A4059 Cynon Valley corridor are planned to improve traffic flows and ease congestion as part of the Council’s £23m highways and transportation investment programme. 

Proposals are currently being developed, in consultation with local residents, to introduce dedicated right-turn lanes on the A4059 in Mountain Ash, at its junction with Troedyrhiw Road, Caegarw. 

If approved, this will provide a holding lane for vehicles travelling north or south on the A4059 wanting to turn right into TroedyRhiw Road. 

To accommodate the right-turn lanes, the existing ‘build outs’ on the junction will be removed, and to maintain road safety, it is proposed to introduce a One Way System in the section of Troedyrhiw Road, Mountain Ash, from its junction with the A4059, southbound to its junction with Cardiff Road. 

Local residents are currently being consulted upon the proposals. 

Aberdare Online would add This is something the council should have done in the first place the build-outs just slow traffic flows at this point. The A4059 at Mountain Ash is just a traffic bottleneck at peek times. 

These highways improvements by the Council will further complement highways investment schemes already carried out, which include: 

Ynys roundabout – a new dedicated southbound left-turn lane has been successfully constructed and completed. 


Asda roundabout – a new northbound left-turn lane to Aberaman has been successfully constructed and completed. 

AberdareOnline would add, again this work should have been done when Persimmon Homes adjusted access roads around the Asda roundabout as part of granting development consent for Coed Dyffryn not left for RCT council tax payers.

Mountain Ash – the repair and restoration of the A4059 footbridge near Mountain Ash Comprehensive School and the Cynon Valley Hospital has been successfully completed, providing traffic-free access which will safeguard and encourage sustainable travel.

Cwmbach roundabout – design work underway to investigate the potential to improve traffic flows, with the possibility of an extended left-turn lane to be constructed next year. 

Mountain Ash – works are progressing well on surveys for the Cross Valley Link, which is badly needed to help alleviate traffic congestion along the A4059 at the current town bridge. 

AberdareOnline would add Cynon Valley commuters want a start date and a complication date this project has been talked about for years by successive labour council with no end product.   

Cllr Andrew Morgan, Leader of Rhondda Cynon Taf Council and Cabinet Member for Highways, said: “The introduction of these latest improvements along the A4059 Cynon Valley corridor will further help reduce congestion and improve traffic flows on the main thoroughfare through the valley. 

“The Council recognises that thousands of motorists every day rely on this road and we know that there have been concerns over congestion in the past because the public has told us so. 

“The scale of the investment and range of the works we are currently delivering along the A4059 is significant and is part of the overall investment in highways and transportation we are making across Rhondda Cynon Taf. 

“I am keen we continue this significant investment in transportation in the coming year alongside the investment we can expect in the valleys through the Metro project.” 

The Council remains committed to improving traffic flows and reducing congestion and delays for the thousands of residents, businesses and motorists that use the A4059 Cynon Valley corridor on a daily basis. 

In addition to these highways improvements, flood prevention works have been carried out along the Abercynon to Mountain Ash section of the A4059 at three locations in order to address long -standing flooding hot spots to improve the resilience of this road in bad weather. 

The improvement works along the A4059 Cynon Valley corridor forms part of the Council’s £23m highways and transportation investment programme which is being delivered across the County Borough over the next three years. 

This is in addition to the £53m already invested into highways by the Council since 2011.

Updates on all the highways improvement works will be posted on the Council’s social media sites where possible and residents are urged to follow/like the Council’s pages for up-to-date information.

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Team @ AberdareOnline

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