A major road through Birmingham will be reduced to one lane later this month as part of the key £500 million scheme to transform the area around where Central Library currently stands.
Queues are already commonplace following the closures on the Broad Street and Sand Pits approaches to the city centre earlier this year.
But from Sunday, June 21 there will be just a single lane of traffic along Great Charles Street northbound from Paradise to Newhall Street – meaning the tail backs could lengthen.
Off peak lane closures will also be introduced on the southbound side approaching Paradise and upgraded to full time lane closure in August.
It will affect traffic between Suffolk Street Queensway, Severn Street and Newhall Street.
The southbound carriageway will see lane closures between Newhall Street and Suffolk Street Queensway and Brunel Street from August 2.
A council spokeswoman urged commuters to consider switching from cars to public transport or cycling during the works.
She added: “If you have to travel by car, consider alternative routes and times for your journey or whether car sharing is a viable option. If you have to drive into the Paradise Circus area, allow more time for your journey.”
The £500 million Paradise Circus scheme will see a new four-star hotel shops and leisure facilities developed, as well as acres of much-needed office space.
However, the scheme is not due to be finished until 2025.