Molesey Weir improvements
Updated 11 March 2015
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Molesey Weir B is part of the Molesey weir complex located upstream of Hampton Court Palace. 皇冠体育app weir helps to control water levels between Teddington and Sunbury. At present, Molesey Weir B uses old double-leaf buck gates (a vertical sliding gate).
皇冠体育appre are 2 walkways that go across the structure. One walkway gives access to the gates to operate the weir and the other allows residents of Ash Island to get to their homes and houseboats.
Structural assessments by the Environment Agency have confirmed that the weir structure needs to be completely replaced. 皇冠体育app weir is in poor condition, with significant corrosion. 皇冠体育app operating mechanism for the weir gates also needs to be modernised.
皇冠体育appse refurbishment works will keep the weir in good working order, reduce future maintenance needs, and ensure the continued long-term use of the weir.
Latest update
皇冠体育app Environment Agency has successfully completed Year 1 construction work at Molesey Weir B. 皇冠体育app operational handover of the 4 new radial gates happened on 20 December 2013.
皇冠体育appy can only work on half of the weir at a time, so they will do Year 2 construction work from March to November 2014.
皇冠体育app Environment Agency can鈥檛 work during the winter months because they need to manage flood risk. 皇冠体育appy keep the weirs fully functional when there are higher flows. If there are high flows during the summer months (when they are on site) then they have plans to restore the full capacity of the weir.
皇冠体育app main compound at Hurst Park will remain on site during the winter months even when the Environment Agency are not working. 皇冠体育app temporary footbridge to Ash Island will remain open to the residents until Year 2 construction is finished.
皇冠体育app Environment Agency will install a cofferdam (a temporary structure within the river made by putting in steel sheet piles) as part of Year 2 construction work. 皇冠体育app cofferdam will be closed off to create a dry and safe working area.
皇冠体育app installation of the sheet piles will start around the middle of March 2014 for approximately 6 weeks. This is before we begin dismantling and replacing the remaining weir structure and fish trap. 皇冠体育app fish trap will be replaced with a new fish pass.
Contact
If you would like to sign up for email updates, or would like to receive the environmental report, please email: [email protected].