JBA Bentley starts £19m Sheffield flood defence

The 2-year civil engineering job will shield the steelworks and wider Decrease Don Valley from repeat flooding by intercepting Bagley Brook the place it enters the plant.

A serious underground system of attenuation tanks, switch tunnels and a brand new pumping station will seize and retailer stormwater earlier than releasing it into the River Don at a managed price of 8,000 litres per second.

JBA Bentley will sink a 5-metre shaft to launch a tunnel boring machine that can drive a 320-metre tunnel, 12 metres under floor. The launch shaft will double because the pumping station and storage chamber.

Craig Fisher, programmes director at Sheffield Forgemasters, mentioned the system will “handle a identified flood threat which might have an effect on each our plant and this a part of the town.”

A bit of flood wall alongside the Don can even be rebuilt to accommodate the brand new outfall construction.

The mission fulfils planning circumstances for Forgemasters’ £400m website transformation, together with its new 13,000-tonne forging line now below development beside the Midland Mainline railway.