A large part of one of the main roads in the centre of Nottingham could close to cars permanently from this summer.
As part of the Broadmarsh area redevelopment, Collin Street will be completely pedestrianised, while Canal Street between Middle Hill and Greyfriar Gate will be for buses only.
The new bus station, car park and library are due to be completed in early 2021, with the shopping centre finishing in summer.
But preparatory utility work needs to be carried out on Canal Street sooner - involving a full closure of part the road - and Nottingham City Council said it may remain closed from then on.
The road closure is expected to happen in late summer, but a decision has not yet been taken on whether the stretch of road will remain shut once the work is finished.
During the closure, part of Canal Street will become one-way only, and another part will close completely.
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While the work is carried out, the road will be completely blocked to cars heading west from the BBC Island.
Drivers heading east on Collin Street will still drive via Middle Hill and onto Canal Street.
Significant repair work to Collin Street is also being carried out, and a temporary road surface has been put in, before it closes to all traffic.
Chris Deas, director of major projects at the council, said: “There are some utility works all along Canal Street this summer.
“It’s about managing the logistics of the development, plus the road network changes, in the way that has the least impact on traffic.
“There will need to be some significant utility work in the summer.
“When that work is finished, we will take a view on whether there’s an opportunity to keep that closure in place to allow other works which form part of the greater Broadmarsh project.”
Several different diversion options will be in place while Canal Street is closed, including what is known as the southern relief route.
Last year, the surface of much of Collin Street appeared to turn red.
This was because a decades-old waterproof membrane had begun failing, causing leaks into the shopping centre below.
Rather than waiting for the development work, the council replaced the membrane - which is bright red - before laying a temporary road surface on top.
This will then be replaced with a more pedestrian-friendly surface once Collin Street is closed to traffic.
How the flow of traffic is expected to change under the proposals, once both streets are closed
Drivers on the A60 London Road, past the BBC island, will use a southern relief route to loop back into the city towards Castle Boulevard.
This is already in operation.
Traffic from London Road will turn right onto the A6019 Queen's Road, onto Sheriffs Way, along Waterway Street West, then head right onto the A6008 Wilford Road towards the city centre.
The flow of traffic on Greyfriar Gate will be reversed.
Traffic heading down Maid Marian Way from Derby Road, which currently uses Collin Street to get to Canal Street, via Middle Hill, towards London Road, will be diverted via Greyfriar Gate to get to London Road.
The northbound traffic flow on Greyfriar Gate is planned to be reversed to allow this to happen.
This would mean traffic flowing southbound along Greyfriar Gate, onto Wilford Street, then onto Waterway Street West, Sheriffs Way, along Queen's Road to London Road.
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