Contractors for Transport for London have now carried out the necessary investigation and feasibility design work for the permanent repair of the safety parapets that their inspections had shown had become heavily corroded.
As the flyover is a ‘temporary’ structure, its design is not compatible with modern standard parapet design solutions. A customised design will therefore be necessary, which will be manufactured off-site to achieve the necessary quality control and to minimise installation difficulties.
TfL have completed initial designs and testing of materials and their contractors are currently carrying out the detailed design specifications, which are scheduled to be complete by the end of this month. After this time TfL will be in a much better position to confirm the start date for their manufacture, the date they will be installed and the impacts the installations could have on traffic.
From the end of February TfL also expect to have a programme for the refurbishment of the flyover completed, so that they can estimate more precisely an end-date for the works.
Installation of the parapets will require TfL to find the balance in terms of not unduly inconveniencing residents and road users with excessive disruption, whilst completing the repairs as quickly as possible so that the flyover can be reopened.
In this context, they intend to carry out the repair works outside of the busy peak periods and at weekends, with night-time working where this will not contravene environmental health constraints or safety considerations.
We remain on track to complete the works by summer 2009.
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