Neath River Bridge Wind Shielding, Wales The 1.2 km long elevated viaduct, a combination of concrete and steel/concrete composite construction, forms part of the M4 Motorway and is the major arterial link in South Wales. Opened in 1996, the high-level crossing of the Neath River has been closed on many occasions due to high winds affecting the safe transit of vehicles. A study was undertaken by Flint & Neill Limited to evaluate the

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