The approach to managing infrastructure is evolving. Instead of replacing ageing assets, the focus is increasingly on ‘looking after what we’ve already got’ – keeping things like bridges and water control structures in service for longer through planned inspections, repairs and upgrades.

Eadon is proud to support this shift by helping to reuse what’s already there wherever possible. We aim to help keep existing infrastructure going for longer through refurbishment, upgrades and modernisation. In doing this, we help to reduce carbon emissions, cut waste and save our clients’ money – all while keeping essential infrastructure running smoothly with minimal disruption.

A major focus of our work is on condition assessment and life-extension planning for mechanical structures such as moving bridges and water control systems – many of which are over a century old. We regularly carry out detailed inspections, helping to identify areas where refurbishment can add decades of additional service life.

We frequently support large organisations such as the Canal & River Trust, The Environment Agency and Network Rail with this type of inspection work. For example, we replaced outdated drive systems with modern solutions on the A82 Great Glen swing bridges in the Scottish Highlands which improved reliability and reduced maintenance demands. And at London’s Tower Bridge, we are part of an ongoing phased programme to replace ageing hydraulic equipment, helping to future-proof this iconic structure.

Many of the structures we inspect are heritage-listed which means they cannot simply be replaced. For these types of refurbishment projects, we take care to balance safety, functionality and historical integrity. To achieve this, our engineers collaborates closely with heritage officers to ensure that repairs and modernisations respect the structure’s original design and character while still meeting modern operational standards.

One of the biggest challenges we face when working on very old infrastructure is the lack of reliable technical records. Often dating back to the early 1900s; they may have been altered several times over the years with no updated drawings or documentation. When this happens, we have to rely on detailed site measurements, condition assessments and our team’s experience to fill in the gaps. We also use non-destructive testing methods, such as ultrasonic thickness checks, to understand the condition of materials without having to carry out intrusive investigations.

Advances in technology are making the inspection process quicker and more precise. By using tools like digital pre-surveying and reporting software, we can now capture and manage data straight from site. Annotated drawings, photos and condition notes can be uploaded on the spot, creating clear, structured reports that are easier to track and reference. Not only is this making inspections more efficient, but it’s also helping to build a reliable and clear record that can help support long-term maintenance.

We’ve also expanded our on-site capabilities with the addition of rope access training. Two of our engineers have recently achieved IRATA Level 1 certification, allowing them to safely reach areas that are otherwise difficult to access using the traditional methods. This capability can reduce the need for scaffolding or expensive lifting equipment and make inspections faster, more flexible and, often, more cost-effective for our clients.

Refurbishment work can be challenging logistically. A lot of the structures we work on are in use daily, so taking them out of service isn’t always an option and we have to plan carefully to keep disruption to a minimum. On major crossings, like Tower Bridge for example, we phased the work so that one side of the mechanism stayed operational while the other was being maintained.

Sometimes, refurbishment provides an opportunity to modernise operation and reduce maintenance demands. For example, on several of the Scottish swing bridges along the A82, we replaced the original hydraulic drives with new electric motor systems. These incremental upgrades collectively delivered significant long-term performance gains across the network – improving the speed, reliability and the overall efficiency of the bridges.

But our work is not just about keeping structures standing – it’s about preserving heritage, supporting communities and finding ways to make the most of the infrastructure we already have. By bringing together our engineering expertise, hands-on experience and the modern tools available to us, we can help ensure that vital infrastructure stays safe, reliable and efficient for years to come.