Llanhilleth viaduct work underway
6:32pm Sunday 13th October 2013 in News
MAINTENANCE work on Trinant Hall viaduct, Llanhilleth, is underway.
The work will see components replaced on the 400m long viaduct which are suffering from reinforcement corrosion principally caused by ongoing chloride contamination from road salts on the concrete.
This is as a result of ageing bridge joints and defective waterproofing on the bridge deck.
Other work will include repairing the damaged concrete and installing an electrochemical system to help stop the corrosion process and maintain the design life of the structure.
The viaduct is a cross border bridge jointly managed by Blaenau Gwent and Caerphilly councils and forms part of the A467 network between Llanhilleth and Crumlin.
At peak times, the A467 has been known to carry around 780 vehicles per hour.
The works, which began on September 30, are planned for 24 weeks and during this time there will be single lane traffic management in place.
There will also be times where it will be necessary to fully close the bridge to all traffic, but this will be undertaken overnight to limit the amount of disruption to the road users.
Ward members for Llanhilleth, council leader Hedley McCarthy, cllr Jim Mcllwee and cllr Mike Bartlett, said: “Transformation within Blaenau Gwent continues. This is a fantastic example of joint partnership working between Blaenau Gwent and Caerphilly to improve the infrastructure links between the two boroughs.
“We acknowledge and apologise that these works may cause delays in your day to day travel. Maintaining and repairing infrastructure is an important aspect for communities as well as creating long term growth and supporting tourism.”
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