The Jackson team at Catholic Bridge saved 12 hours during a weekend shift by using a Vacuum Excavator to prepare an area for concrete foundations.
This £1.27m project involves removing temporary supports at Catholic Bridge in Essex and installing a permanent concrete pedestrian underpass to strengthen the bridge carrying the B1389 Newland Street/Colchester Road.
The Vac-Ex machine was used to excavate under the bridge in preparation for new concrete foundations to support a new temporary steel portal frame. This method provides a safer, lower risk alternative to traditional excavation techniques as there is no need for additional excavator movements and dumpers. Doing so, the team were able to save 12 contract hours and work more efficiently in constricted areas.
Once complete, the volummetric concrete foundation for the temporary steel portal frame was poured, allowing the team to remove the existing temporary works and create space to install the permanent reinforced concrete pedestrian underpass.