More than 1,000 tonnes of concrete are expected to be used to fill in two subways at Peterborough’s Queensgate roundabout.

Council chiefs have revealed they are to pour 418 cubic metres of flowable concrete into structures around the subways at the west and south ends of the Queensgate roundabout that link up Bourges Boulevard and Thorpe Road.

Filling in the two dismal and graffiti-covered subways will be a key element of the City Link project to create a more pedestrian and cyclist-friendly route linking the train station to Cowgate and the city centre.

In addition to the flowable concrete, a further 18 cubic metres of Sika Grout will be used to top off the material.

One of the subways that will be filled in to create the new City Link route between Peterborough train station and Cowgate

placeholder image — One of the subways that will be filled in to create the new City Link route between Peterborough train station and Cowgate

It is estimated the flowable concrete will need about 102 standard mixer trucks to bring it to the site.

In theory, there would be enough flowable concrete used in the subways to comfortably fill Peterborough’s planned £36 million 25-metre long swimming pool.

A council spokesperson said: “The subway infills to the west and south subways will be filled with a flowable concrete used to fill voids, with a layer of Sika Grout material to top the surface.

She said: “We plan on using 418m3 of flowable concrete and 18m3 of Sika Grout.

This image shows how the City Link route in Peterborough will look once completed

"Flowable concrete for highways, which is often referred to as flowable fill, is a self-compacting material designed to rapidly fill voids and backfill utility trenches without the need for manual tamping or any mechanical vibration.”

The City Link project is the first phase of the city’s planned £65 million Station Quarter regeneration scheme.

The roundabout works are expected to bring disruption to road users as the two subways under the roundabout are filled in.

Councillor Shabina Qayyum, leader of Peterborough City Council, said: "The site fencing for the trial holes will be set up at the end of May and we will be releasing information on the Temporary Traffic Regulation Orders for the lane closures on Queensgate roundabout in June.

"We will work together with our partners to ensure that any disruption to motorists, pedestrians/cyclists, local businesses and wider residents is communicated clearly and ahead of schedule.

She added: "The City Link project will remove the two subways that run underneath the Queensgate roundabout, creating a surface level access to the city centre that runs all the way from Cowgate from the train station.