The scheme involved the removal of Bridge 30 deck surface and footpaths to carry our structural repairs and waterproofing before reinstatement of the asphalt surface on a critical vehicle / pedestrian bridge across the river Calder on the Sellafield nuclear site. Our scope of work included:
The bridge is one of only 3 bridges across the River Calder on the Sellafield nuclear site which are required for site operational, construction and workforce traffic. Although vehicle diversions were implemented during the works, pedestrian access had to be maintained across bridge 30 as much as possible to provide workforce access to the operational facilities. This was facilitated by constructing a temporary pedestrian walkway across the bridge which had to remain open as much as possible.
The project was delivered during a summer heatwave with temperatures of more than 32 degrees Celsius. To work within the specification of the waterproofing silicone, we had to work at night when the temperature dropped to acceptable levels.
Due to the security classification of the Sellafield nuclear site, our subcontractors were required to have security clearance. Due to the short term and urgent need of the works, we collaborated with the Sellafield Ltd security department to allow our subcontractor to work on site under special security arrangements.