The 11-span bridge structure carries the HMN1 line over the River Clyde, and has 4No. longitudinal main girders per span, with deck units comprised of concrete encased transverse spanning the rolled steel joist and monolithic reinforced concrete slabs.
The purpose of the project was to develop a robust roadmap required for the scour repairs/protection works to reduce risk, and lower the assessment of risk score at the bridge structure piers. To retain the structural integrity and increase the service life of the bridge structure, the team carried out steelwork repairs and installation works to reinforce the bridge structure.
The team repainted all exposed metallic surfaces in accordance with the approved coating system, which gives the bridge structure a 25 year service life extension.
60t
of steel used
to repair main girders
5000l
of paint used
on the main girders and hand rails
The project’s pace received a substantial boost by strategically adjusting the sequence of strengthening and painting works on the spans. This alteration involved completing the works on the end span just as the scaffold was built, rather than beginning with the interior spans. This allowed us to remove the scaffold from the end span whilst the interior spans were worked on, ultimately saving time. This deliberate sequencing contributed to the acceleration of the project timeline.
• Site establishment and set up, as well as the set up of the safe route to work.
• Vegetation management around the structure.
• Installation of bespoke temporary works systems, including all earth related works and scaffold around the structure, ensuring compliance with safety standards.
• Scour protection works implemented to safeguard structures from erosion and environmental factors ensuring long-term stability.
• Masonry repairs addressing structural concerns, to ensure longevity.
• Blasting and surface preparation for the main girders, so they were blasted in accordance with the S.A. 2.5 blasting and mechanical prep system.
• Steel repairs and strengthening works.
• Painting and coating of main girders.
• Scaffold removal, site demobilisation and reinstallation of the ground soil.
• Early and continuous consultations with the landowners, environmental consultants and designers, ensuring good community relations, engineering innovation and eliminating environmental hazards.
• Our versatile management and adaptability to unexpected changes ensured the completion date remained unaffected.
• Implementation of a robust access plan at the work site, which mitigated hazards related to working at height.
• Construction review sessions were held regularly on site, which helped identify actionable and timely solutions to potential hold ups.
• The project team’s strategic scope and completion time optimisation plan ensured the project adhered to the programme and stayed within the budget.
Story collaborated closely with environmental consultants at an early stage which addressed and eliminated potential environmental concerns. This includes protective measures such as barrier placement around ancient woodland trees, demonstrating our commitment to environmental stewarding and protection. Consent restrictions were agreed, allowing the project to be completed smoothly within the permitted time window.
Network Rail
The project involved regrading approximately 280 metres of the embankment to enhance structural stability and improve rail safety.
RWE Renewables
Works were carried out to demolish an existing storage building, and replace it with a larger, modern structure.
Network Rail
VolkerRail/Story joint venture were tasked with the £80m project as part of a £137m investment that saw the undertaking of extensive enhancement works to remove several bottlenecks along the route to improve reliability, increase passenger services and aid in freight movements.