Construction of Flood Defence Structures at Alverstoke and Forton

The works are to be undertaken to provide flood defences to two locations in Gosport - Alverstoke and Forton, as two separate schemes. This includes

• The construction of circa 145m flood defence at Alverstoke scheme, Gosport at the western end of Stoke Lake and associated works.
• The construction of circa 240m of flood defence at Forton scheme, Gosport within the grounds of St Vincent College.

The completed flood defences will provide protection against flooding for the next 50 years against a 1-in-100-year flood event. In both locations, the proposed construction is a reinforced concrete 'L-shaped' gravity wall as the main part of the defence with associated flood equipment at road crossings.

The construction programme at both schemes is anticipated to be undertaken largely in parallel, with both commencing in early spring 2021, but delivered as separate schemes. Forton has restrictions on the timing of the works due to environmental legislation and works cannot take place in the winter period (aside from that noted); Alverstoke programme is not subject to these same restrictions. Further details are contained in other contract documents.