Deep excavations and drainage challenges have been overcome on a Lancashire road project through collaboration between main contractor Hochtief, subcontractor TPS and sire specialist Sykes Pumps.
Groundwater control was vital on the £32M scheme which will route traffic from the M55 to the A6 to avoid the village of Broughton and cut congestion by 90%.
Sykes supplied four Super Wispaset 150 super silenced diesel pumps to help manage the water table during excavations for the project, with cohesive clay ground conditions and a flat landscape with limited drainage creating significant challenges.
The pumps were used to take groundwater from the site area into settlement tanks, where any sediment was removed prior to discharge back into the natural water course. According to the project team, this was critical to ensuring a safe working area during the excavation phase and enabled the contractors to keep the coffer dams dry during excavations for road bridge abutments.