HS2 has proposed changes to the construction design of its Manchester route following work with the UK Environment Agency to better understand the widespread flooding impacts in West Didsbury.
In response to this, HS2 is now suggesting relocating the Palatine Road vent shaft required for the Manchester tunnel outside of the Didsbury Flood Storage Basin.
This decision was made after a detailed assessment of the original construction plan and revised flood modelling – with a specific focus on the aftermath of Storms Christoph, Eunice and Franklin.
The newly proposed location is within the site of the old Hollies Convent School, and will remove any potential impacts to Withington Golf Club, as well as reduce those to neighbouring properties.
This proposal reflects ongoing design and engagement work undertaken during the phase 2b Western Leg (northern extension) Crewe – Manchester bill process.
HS2 submitted the hybrid bill to parliament last January, requesting the legislative powers to build and operate the northern extension, which is scheduled to begin passenger services between 2035 and 2041.
“We're committed to ensuring that our plans for Britain’s new high-speed railway minimises disruption for local communities during both construction and operation.
“It’s vital that we act on new information, and we believe this is a positive step to reduce our construction work’s impact on flood risk in the surrounding area.”
HS2 has already written to local residents advising them of the proposal and has invited them to discuss the changes at either a local community event or an online webinar being held later this month.
The proposal will be formally submitted to parliament later this year for approval.
It also follows the announcement of new plans to improve access to the proposed combined HS2 and Northern Powerhouse Rail (NPR) station at Manchester Airport earlier this month.
