New images of planned viaduct sky park expansion

The National Trust wants to extend the park from 150m (490 ft) to 350m (1,150 ft)

New images showing the planned expansion of a "sky park" built on a disused railway viaduct have been released.

Half of the Victorian structure built to take steam trains to the Great Northern Warehouse in Castlefield in Manchester was converted into a park in the sky by the National Trust two years ago.

Initially open for a year-long trial, its popularity saw it remain open.

Now the charity has unveiled plans that would see the remaining section of unused Grade II-listed viaduct overhauled to extend the park from 150m (490ft) to 350m (1150ft).

The National Trust has not given a formal date for work to start

A new entrance by the Mancunian Way will also be added if the expansion gets planning permission.

"It’s clear that Manchester wants the viaduct to remain open and reach its full potential to bring nature to more people in this urban setting," said Nichola Jacques, Castlefield Viaduct project manager.

Images show the new section of viaduct will feature winding paths through planted areas to "encourage people to take time out from the busy city below and connect with nature".

There will also be a drive to make it attractive to local wildlife, bosses say.

The ultimate goal is to run the sky park all the way to Pomona Island in Trafford and Salford

Although the National Trust has not given a formal date when work will begin, it said it was hopeful the renovation would start next year.

The project has had £400,000 from National Highways, but The Local Democracy Reporting Service understands the National Trust is confident it will get the cash required.

The ultimate ambition is to create a 1km-long park from Manchester city centre to Trafford’s Pomona Island, which will also connect to Salford.

The whole scheme would cost about £20m.