Ground investigation has started on Old Steet roundabout, London, ahead of its redevelopment.
The work will aid the design of the redevelopment of the area to to remove the outdated 1960s roundabout.
Led by Morgan Sindal, the investigations being undertaken to identify contaminated soil, as well the investigation of the four traffic islands approaching the roundabout to confirm pavement depth to inform the detailed design.
At the same time Thames Water is identifying existing utilities within the area to confirm diversion routes for services to clear the area required for the a new subway entrance.
The investigations will be finished by Christmas.
When completed the redevelopment will see the northwest arm of the roundabout close permanently to all traffic, creating a new public space with better walking and cycling access to Old Street station. Traffic will operate two-way through the redesigned junction, with fully segregated cycle lanes and cycle-only traffic signals around the re-designed junction.
According to Transport for London, the works will significantly reduce danger for cyclists and other vulnerable road users and enable new people to cycle who were previously put off by the roundabout.
Some of the subways around Old Street will also be closed and replaced with new surface-level pedestrian crossings, making journeys in the area quicker and easier for people walking.
Mayor of London, Sadiq Khan said: “I announced over the summer that I wanted to see improvements at Old Street brought forward, and I’m delighted that work to transform the junction has now begun. Old Street is one of the busiest junctions in London, but is currently an outdated roundabout that needs to be made safer for the thousands of people who pass through it every day.
“New segregated cycle lanes will transform safety for cyclists, and new pedestrian crossings and a new public space will make Old Street cleaner, safer and more pleasant for everyone spending time in the area.
“Every death or serious injury on London’s roads is one too many, and the improvements at Old Street are part of our ambitious plans to improve road safety all across London.”