There is also a signalised T-junction with two crossings at Gilbert Road and a signalised crossroads with four crossings at Arbury Road.
A GCP spokesperson said: “The new layout features dedicated crossing facilities for those walking and cycling, so people can safely cross the road, even during the busiest times.
“These features will mean parents, children and commuters can have the confidence to walk and cycle along Milton Road, whether they are heading to the shops, school or work.
“Working with the community, we added new flowers and different types of trees to the roundabout.”
They added: “Aside from brightening up the area as an attractive place to live, walk, cycle or drive, it also enhances biodiversity and helps support vegetation growth.
“We would like to thank everyone who helped with making the roundabout a reality.”