Redbridge Viaduct

First phase of repairs completed on Redbridge Viaduct in Scotland

Network Rail engineers have successfully completed the first phase of repairs being carried out to the Redbridge Viaduct, as part of plans to ensure the safe and reliable running of services on Borders Railway line.

The £2.4m investment into the viaduct will see engineers work to protect the five-arch Listed structure against future erosion. This will be achieved by undertaking scour protection and masonry repairs to the red sandstone structure.

Work began on the viaduct in late April, with the final repair work expected to be completed by October 2021.

The Redbridge Viaduct spans the River Tweed in the Scottish Borders, between Tweedbank and Galashiels.

Scour protection involves the removal of the existing river bed around the impacted base of the bridge pier and then installing a scour ‘mattress’ filled with concrete. This helps shield the bridge base from damage caused by the fast-flowing water.

The first phase of work included the installation of 600 square meters of scour mattress and 400 tonnes of permanent rock shield, as well as 150 cubic metres of poured concrete.

To allow the Network Rail team to carry out this repair work, a portable dam system was set up beneath the bridge to reduce the river flow and create a safe working environment.

In advance of this, the project team worked with the River Tweed Commission to relocate fish to another part of the river before water was then drained to form a dry working area. This process is set to be repeated at each subsequent pier as work progresses.

Christina Thomson, Network Rail’s Project Manager for the Work said: “The team has delivered the first of three phases of work to Redbridge Viaduct; essential maintenance that protects the piers of the viaduct from scour erosion and in turn, helps maintain the railway infrastructure.

“We’ve worked collaboratively with Scottish Borders Council throughout and with the River Tweed Commission and our environmental and marine engineering specialists to ensure our activity has minimal impact to the river’s existing habitat - and will continue to do so throughout the rest of the project.

“The viaduct is an historic Victorian structure that continues to play an important role in carrying passenger trains on the Borders Railway route. When work is complete in October, we won’t need to undertake repairs on this scale for many years to come.”

RTM Dec/Jan 22

RTM Dec/Jan 22

Transforming Weather and Seasons

Our December-January 2021-22 edition of RTM is packed with insights and innovations to help us deliver the railway network of the future. As we enter into the winter period, it’s fitting that we offer our cover story to Network Rail’s Dr Brian Haddock, discussing how weather and seasons are changing our railway network. Elsewhere, we have Charlotte Blach explain a new tool to support supply chain opportunities, and delve deeper into Track & Infrastructure innovations, alongside so much more…




View all videos
Passenger Safety

RTM365 Online Festival

The future of rail safety
24 February 22

Everyone has the right to go home safe.

The health and safety of both our workforce and passengers are paramount and it should be a priority in all of our project, development, and maintenance activities. Despite the fact that our railway is one of the safest in the world, there is still work to be done to protect the safety of everyone. Using technology to its full extent can improve important, accurate, and potentially lifesaving communications.

RTM365 will bring together industry leaders on February 22nd to discuss how we can use changing safety technology, promote training and development, and create a safer railway for both our employees and passengers.


The Green Rail Revolution

Maria Machancoses, Director of Midlands Connect discusses the importance of HS2 to the Midlands and the UK, their collaborative work with the Department for Transport, and how we need to embrace the railways again.

More articles...

View all