A slip road off the A38 at Lichfield will close for 15 months, HS2 bosses have confirmed.
The southbound exit at Streethay will shut from 1st August.
It is part of the works to create a bridge to allow the A38 to go over the high speed rail line.
A spokesperson for HS2 said:
“The new railway line will run beneath the main carriageway, slip roads and existing railway lines.
“To carry out this programme safely, we will have phased traffic management which will commence with the closure of the A38 southbound slip road at Street from 9pm on 1st August for 15 months.
“We recognise this will be impactful, but by closing the slip road it allows us to complete the work quicker overall, saving 12 months on our programme.
“We will be constructing the supporting foundations and structure for the bridge. We will also be starting excavations for the A38 southbound slip road and carriageway over bridges.
“During later phases of work we will be closing the northbound slip road along with lane closures on the carriageway within the Streethay area.”
A series of overnight works will also take place in the run up to the longer term closure.
The southbound slip road will shut for five nights from 11th July, while the northbound slip road will be shut overnight for six weeks – not including weekends – from 25th July.
Information events are being held for residents to find out more about the planned works in the area.