The Council will begin a Resilient Roads scheme at the A4058 at Dinas, to reduce the risk of surface water flooding in heavy rainfall. It will increase the road’s drainage capacity to intercept and convey rainwater away from the road, while reducing the risk of flooding to the local community.
The scheme, from the week commencing Monday, February 3, will aim to tackle a known issue of surface water accumulations where Cymmer Road (A4058) meets Appletree Road, with several flooding incidents having impacted 11 properties since 2012. The scheme has received a 90% contribution from Welsh Government’s Resilient Roads Grant and will be completed by the end of March 2025.
The scheme will install additional gullies along the A4058 and divert the highway drainage through a new carrier line, down Appletree Road, where it will connect with a separate carrier line that discharges to the River Rhondda. Furthermore, these works will reduce the risk of flooding to the nearby Welsh Water combined sewer, by disconnecting the highway drainage along the A4058. This will increase the resilience of the sewer network in the local area.
Surveys and investigatory work took place in 2023/24 to inform the scheme, which will be delivered by the RCT Streetcare Team.
No road closures are needed for this scheme – and the elements of work requiring traffic signals will be completed outside of peak hours. Access into and out of the nearby housing estate will be maintained at all times.
In addition, investigatory work to the culvert and drainage networks on nearby section of the A4058, near the Dinas Community Recycling Centre and Ashfield Close, will take place. Survey work will seek to find the cause of flooding at these locations, using separate Resilient Roads Grant funding.
A spokesperson for Rhondda Cynon Taf Council, said: “This Resilient Roads scheme in Dinas aims to alleviate an issue with flooding on a section of the main road between Porth and Tonypandy, in and around Appletree Road. When this location floods it disrupts travel on the busy commuter route, affects two bus services, and presents a risk of flooding to homes and a commercial property. The most recent flooding occurred when a Welsh Water manhole surcharged, along with surface water cascading down the mountainside.
“In November, Storm Bert hit the County Borough and served as another reminder about the importance of continuing our investment in flood alleviation measures. Where we’ve invested heavily in such measures over the past few years, the vast majority of our schemes proved effective – but the storm event also showed that there are many other assets that still need to be upgraded.
“The Council has this year secured £4.48m across Welsh Government programmes for flood alleviation, with the investment being used with Council match-funding. We’ve also secured major funding to develop community-wide schemes in Pentre, Treorchy, and at Arfryn Terrace in Tylorstown. The latest round of Welsh Government investment included £500,000 from the Resilient Roads Fund, and the Dinas scheme is closely following similar work that has started at the A4059 in Mountain Ash – the main route through the Cynon Valley – to tackle water running off the mountainside and across the road.
“The A4058 scheme near Appletree Road starts on February 3, and will include important work to install a carrier drain to increase the network’s capacity, and better divert flows of water. Two-way traffic flow will be maintained on the A4058 at busy times. No road closures are needed, and all work requiring traffic lights are planned outside of peak hours to minimise disruption. Thanks to road users and the community for your cooperation.”
Posted on 23/01/2025