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Our mains replacement scheme in Main Road restarted on April 7.

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Colden Common mains replacement

Our mains replacement scheme in Main Road restarted on April 7.

A closure of the northern section of road is in place between Church Lane and Scotts Close and there is a 1.4 kilometre diversion.

This is much shorter than the original diversion in January and will direct traffic along Church Lane, Brambridge and Highbridge Road.


Temporary traffic lights are in place at the junction of Main Road and Portsmouth Road. These will be manually controlled during peak times. Temporary lights may also be needed at other spots as the work progresses.

Live traffic updates for the area are available on the Hampshire ROMANSE website.

Water main

The new water main has been installed and pressure tested to check for leaks. It must now be cleansed so it can carry tap water safely and samples will then be collected and lab tested to ensure the water meets strict standards.

Once these important processes are complete, we can then connect the new main to the existing network. We expect to complete the scheme by April 21, but earlier if we can.

While we expect the impact of the work to be far less than in January, visitors travelling to Marwell and other attractions via Colden Common should still leave extra time for their journeys.

Essential scheme

The essential scheme to replace 1.2 kilometre of ageing water main started in September. Work was suspended on February 10 due to flooding in the local area.

Frequently asked questions

  1. The scheme keeps changing. What’s the latest? 
    • We closed the southern section of Main Road, from the Colden Common roundabout, between January 6 and February 9 to replace a major water main.

      As the scheme progressed the southern section reopened on February 9 and the closure moved northwards between Church Lane and Scotts Close. A shorter, local diversion was put in place.

      However, around this time Hampshire County Council had to close other major roads due to severe flooding across the region. On February 10 we reopened Main Road in full and suspended the scheme until the floods subsided to ease further congestion.

      That means we must now return to put the finishing touches to the project. We have closed the northern section of Main Road and reinstated the shorter closure and local diversion.

      Temporary traffic lights are in place at the junction of Main Road and Portsmouth Road to enable us to connect the new pipe to the existing one.

      These will be manually controlled during peak times. Temporary traffic lights may also be in place at other key points for safety and to try to manage congestion.

      We expect to complete the scheme by April 21 – but will do what we can to finish sooner.
  2. Why are you returning in the school holidays? 
    • Traffic data from 2013 shows there was a combined reduction in traffic of 10 per cent over the Easter holidays. Restarting the scheme at this time will avoid disrupting the school run, which we know affected many people during the initial closure.

      As with any road closure, there may be some disruption. However, we hope this won’t be as significant as in January because the closure and diversion are much shorter.

      We updated residents, councillors and the media well ahead of the re-start date, and put up early warning signs for road users.

      We’ve also spoken to local businesses, including Marwell, which will put information on its website to make visitors aware.
  3. How long is the diversion? 
    • The diversion is 1.4km. This is much shorter than the original diversion in January and will direct traffic along Church Lane, Brambridge and Highbridge Road.

      It will be clearly marked and a map is available above, as well as on the Hampshire ROMANSE website.

      It’s important to bear in mind the section of road being closed in April is much shorter than the original closure in January.

      The diversion follows a shorter, local route so we do not expect disruption to be as significant. However, there will still be some impact and we recommend you leave extra time for your journey.
  4. How much is left to do? 
    • The majority of the scheme has been completed but, because of the delays caused by the flooding, we need to put the finishing touches to the work. The new water main (1.2km in length) has been installed and pressure tested to check for leaks.

      It must now be cleansed so it can carry tap water safely. Samples will then be collected and lab tested to ensure the water meets strict quality standards. Once these important processes are complete, we can then connect the new main to the existing network.
  5. What about the buses? 
    • We have liaised with Hampshire County Council and the bus companies. It's unlikely shuttle buses will be required as the closure and diversion are much shorter.

      There will be no impact on local school buses as the work will be done during the Easter holidays.
  6. Why do you need to close the road at all? 
    • The pipe is close to the middle of the road, leaving very little room for traffic to pass. Keeping the road open while working would be extremely dangerous for motorists and the site team.
 
 
 
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