This project won the ICE South West ‘Over £8m Re-engineered’ Project Award for various innovations. Pioneering Tomography The structures had been subject to limited post tensioning investigations (PT) during the ECI phase which had revealed voids within the PT ducts, however, further investigations were required. Conventional investigations pose a risk in that they can further weaken the structure, so the team trialled pioneering Tomography and Ground Penetrating Radar techniques to ascertain the extent of the voids in the PT system without causing further damage to the structure. This was the first time these techniques had been used on a National Highways structure, and the trial was so successful, Tomography is now being used across similar National Highways schemes. Hydrodemolition – Wastewater Treatment The innovative cantilever scaffolding & containment system allowed hydro demolition works to be carried out safely over the live carriageway beneath. Wastewater from this process was collected and treated on site, before discharging to local highways drainage system, removing the need for off-site disposal Sustainability – Repair vs Replace On most construction projects, concrete and steel are the two largest contributors to carbon emissions. By adopting a repair rather than replace strategy for both structures the amount of concrete and steel required for this project was dramatically reduced. Furthermore, the data gained from the refurbishment of both structures will be used by National Highways to undertake a more detailed study into the sustainability merits of repair vs replace, and will be used to inform the options for a number of identical projects to be undertaken on the strategic road network up to 2030.