DRIVERS are being warned of lane closure on the M275 in Portsmouth.
Lanes will be shut while city council contractors Colas carry out essential bridge maintenance to Pounds Access Bridge and Tipner Interchange Bridge North and South.
The plan is to reduce the southbound carriageway to two lanes and the northbound carriageway to one lane from 8pm tomorrow until 05.30am on Monday. In addition, the northbound carriageway will be fully closed from 11pm tomorrow until 5.30am on Saturday with a diversion through Stamshaw.
Colas said that works would continue from 8pm on Friday July 12 until 5.30am on Monday July 15, when the above lane closures will be repeated.
A colas spokeswoman added: ‘The existing temporary 40mph speed restrictions will remain in place throughout the works as a safety precaution for motorists and workforce.
‘Road users are being urged to use the Eastern Road as an alternative route into and out of the city where possible.
‘The work is required in order to replace existing waterproofing on all three bridges which has now reached the end of its life. It will involve stripping the carriageway surface, removing and replacing the existing waterproofing membrane. Work will be carried out day and night in order to complete the works over the two weekends.’
Paul Ferroni, Asset Manager for Colas Ltd said: ‘The existing waterproofing was installed 40 years ago when the motorway was originally built and has now started to fail as it is at the end of its life expectancy.
‘Whilst we appreciate that this project will cause some disruption to road users and local residents, it is absolutely essential that works are carried out now in order to keep the bridges safe.
‘In addition, we are taking advantage of the narrow lanes and traffic management already installed on the M275 for the new Tipner motorway junction and park-and-ride project, in order to eliminate the need for further disruption further down the line.
‘Due to the nature of the works it is important that we have dry conditions and we are monitoring the weather forecast daily”
‘Without waterproofing on the bridges, surface water from the carriageway would leak into the structure of the bridges and eventually corrode the concrete rendering the bridges unsafe. This work will therefore ensure that the bridges are safe and fit for purpose for another 40 years.’