The three span reinforced concrete structure, of hollow arch construction, is attached to the Station Road viaduct. It is currently the primary route for traffic entering Carmarthen and the approach road to Carmarthen railway station. The structure was constructed between 1936 and 1937 and replaced a medieval seven arch bridge which had stood at the site for seven centuries.

The challenging and multi-disciplined 26-week contract, carried out on behalf of Carmarthenshire County Council, incorporated CRL’s core business activities of hand and spray applied concrete repairs to both external and internal areas of the bridge structure. In addition to managing traffic, CRL installed buried asphaltic plug deck joints, bridge deck waterproofing and blacktop surfacing.

The refurbishment work was carried out by CRL following Inspection by the ‘In house’ Consultancy of Carmarthen Town Bridge and Station Road Viaduct in June 2000. Repairs to the interior were billed using The Concrete Repair Association ‘Standard Method of Measurement for Concrete Repair’.

Environment Agency restrictions prevented working on the soffit of more than one arch at a time and also required the temporary access platform to be quickly removable in a flooding emergency. A mobile access platform was designed which comprised of a 2m wide platform spanning on to tracks supported on brackets fastened to the vertical face of the abutments and piers. The repairs were carried out in alternate sections, the platform wheeled along the tracks to its new position and locked in place while works were in progress. Debris netting was pinned to the arch soffit to contain the concrete removed by hydro-demolition and any ‘overspray’ of repair concrete.