The importance of carrying out bearing and expansion joint inspections by proficient and competent engineers who understand their functionality can often be key to maximising a structure’s lifespan and avoiding major, unexpected, emergency repair costs.
USL Ekspan have carried out a number of projects for swing bridges and foot bridges. From design, fabrication of all structural components, to trial erection and final installation. Details of these type of bridge installations can be supplied on request.
Fiddler’s Elbow Viaduct carries the A472 over the River Taff linking the A470 Trunk Road at Abercynon Roundabout with the A4054 at Fiddler’s Elbow Roundabout. The viaduct, one of the region’s busiest road bridges, is one of the main arterial routes linking the nearby County Boroughs of Merthyr Tydfil,n Rhondda Cynon Taf and Caerphilly.
Surveys and investigations carried out in 2014 identified the need for essential permanent remedial works on the bridge expansion joints. These joints, with over thirty years of wear and tear, were now past their useful life and needed replacing, to safeguard the bridge’s long-term future.
Alun Griffiths Contractors were responsible for undertaking the £2m scheme of works - part of the Council’s wider investment programme for major improvements on Highways and Structures, and the Transport Infrastructure.
Old expansion joint showing excessive wear
Alun Griffiths Contractors appointed USL Ekspan to remove the existing expansion joints and install 8 no. USL Ekspan WSG multi-element expansion joints - 4 on the south deck carriageway and 4 on the north deck carriageway. Each joint (WSG160, WSG880 and WSG800) was 10.6 metres long.
Expansion joint lifted into position
USL Ekspan completed a survey of the existing joints and deck arrangement to ensure measurements taken of the joint gaps, levels and slopes matched the as-built drawings for correct manufacture of the new multi-element expansion joints. The installation of the joints was undertaken in two phases (4 no. per phase) using 2 teams of USL Ekspan operatives working simultaneously on 2 no. joints as associated ground works were carried out by other sub-contractors.
This project involved; design and manufacture of 8 no. multi-element joints; hydrodemolition and lifting to facilitate joint removal; installation of new joints to existing steel structure; and additional re-enforcement and concrete reinstatement.
New installed multi-element expansion joint
Precise planning and effective co-ordination throughout were key to successfully completing this project ahead of schedule with minimum disruption to motorists.
For more information please contact +44 (0)114 261 1126 or email firstname.lastname@example.org