is essential

IN response to your story on 'A Bridge too Far', I want to stress how vital and complex the refurbishment of Hayhurst Swing Bridge is.

The bridge is a wonderful example of Victorian ingenuity but its very complexity means that it is a highly involved structure to maintain and repair, with many intricate parts. The main refurbishment work started in February and is due to end in October - a challenging timetable for a complex project of this type.

Over the past two months, we have built a substantial temporary platform under the bridge to take its 429 tonne weight, allowing essential access underneath the bridge and enabling work to be carried out without the bridge collapsing. All the paint needs to be removed from the metal structure, corroded parts replaced and the bridge repainted with four coats.

The work also includes the refurbishment of the highly complex working mechanisms, control cabin and replacement of the road surface.

The bridge is a century old, Grade II listed structure and was last refurbished more than 25 years ago. It now needs restoration strengthening work, which is required legally to meet modern day traffic needs.

MARK DUQUEMIN,

Principal Engineer, British Waterways