This means that motor traffic will be able to use the inbound lane along the whole of Histon Road.
Stagecoach will notify customers about its plans to reintroduce bus services along the length of Histon Road in due course.
The remaining work to finish the project can be managed safely by the combination of temporary traffic lights and the final set of planned overnight closures.
Overnight closures between 8pm and 6am on the section between the Gilbert Road junction and the Kings Hedges Road junction will continue until 8 October.
Some temporary local traffic light will also be needed to finish the scheme.
A diversion route via the A14, Milton Road and Victoria Road will be in place for the final set of overnight closures.
For more information about the scheme visit www.greatercambridge.org.uk/histon-road