Drivers are being warned to plan their journeys this weekend when part of the M3 will close to allow a much-anticipated footbridge to be installed.
The previous Bagshot Heath footbridge, which crossed the motorway between junction 3 (Lightwater) and junction 4 (Frimley), was demolished in 2023 after engineers found issues with its ability to withstand crash impact from over height vehicles.
This weekend, a replacement structure – which weighs nearly 100 tonnes, is 63m long and 4m wide – will be lifted into place after months of careful construction in a British factory.
To do so safely, the motorway will be closed for the whole weekend – with the southbound entry slip roads closing at 12pm on Friday 11 July before the whole northbound carriageways shuts at 7pm and the southbound at 9pm.
The motorway will then reopen in both directions by 6am on Monday 14 July.
The structure was originally due to be installed in April, but the work had to be delayed due to the concrete in one of the bridge abutments not hardening as expected.
The concrete has since passed subsequent tests and therefore is now safe to install.
Once the bridge is in place, contractors will need to fit mesh and anti-climb measures before it can be used by the public.
This work will be carried out during a series of overnight closures on the M3, before the footbridge is formally opened for use later in the summer.
National Highways project manager Nick Axford said: “We know how important this footbridge is to the community, and how disappointed people were when we had to postpone its installation, so we’re delighted to be taking a huge step towards opening it once again.
“Putting the bridge together has required sourcing several bespoke parts, which often take months to manufacture.
“For the installation to be carried out safely, we need to close this section of the motorway across the weekend.
“We acknowledge there may be some disruption as a result, but we are grateful to drivers for their patience and urge them to plan their journeys in advance.”
(Pic: National Highways)
