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Road works and closures

Find out about the current road works and major activities scheduled on Cardiff roads.

The Link opens in a new window website shows most key planned works that are on-going, and who is responsible for the works.


Road closures

Mardy Road Bridge in Cardiff will close to road traffic from 18 March 2017 until autumn 2018, as essential work to upgrade the railway continues in preparation for a new fleet of electric trains which will improve journeys for passengers.

The 121 year-old road bridge, which connects Rumney and Newton, will be replaced with a new and improved structure to give clearance for electric trains beneath as part of Network Rail’s Railway Upgrade Plan. The bridge has also reached the end of its lifespan and the new structure will also be able to withstand the modern city traffic above.

As the bridge is currently too low to accommodate the new fleet of trains it has to be fully demolished and then rebuilt in a higher position. 

Some advance preparatory works will begin on Monday, 30 January and temporary two-way traffic management will be in operation on the road bridge to ensure work can be safely carried out.

For further information about the project, visit the Network Rail websiteExternal link opens in a new window  or contact Network Rail’s 24 hour hotline 08457 11 41 41.

Work has commenced on the A468/A469 Pwllypant Roundabout for a period of 12 months to improve traffic management. Caerphilly County Borough Council have advised this will lead to significant delays in the area. Full details and updates on the progress can be viewed on their websiteExternal link opens in a new window

Night time closures will apply (7pm - 6am) for annual maintenance, testing and cleaning of the tunnels.

Eastbound dates

Tuesday 16th and Wednesday 17th January 2018
Tuesday 24th and Wednesday 25th April 
Tuesday 17th and Wednesday 18th July
Tuesday 16th and Wednesday 17th October
Tuesday 15th and Wednesday 16th January 2019

Westbound dates

Tuesday 6th and Wednesday  7th March 2018 (Includes full westbound viaduct closure)
Tuesday 12th and Wednesday 13th June
Tuesday 4th and Wednesday 5th September
Tuesday 13th and Wednesday 14th November
Tuesday 5th and Wednesday 6th March 2019  (Including Westbound Viaduct Closure from 9pm)

For more information please contact us.  Tel: 029 2087 3246