National Capital Authority chief executive Sally Barnes said the upgrade had made the thoroughfare safer for cyclists and pedestrians, and expected it would increase visitation to the area.

"People were telling us it was a pinch point," she said.

"Cyclists, walkers and runners didn't have a great view of what was coming towards them. While we had no catastrophic accidents, people were nervous the potential was always there."

In an elaborate event on Monday morning, complete with a ribbon cutting, the path was officially reopened to the public.

The path has been widened to four-meters across the length of the Sculpture Garden between Parks Place East and Bowen Place.

Project manager Adam Deutsch said three street lights had been installed after public concerns had been raised over a lack of lighting for the area. A ramp and wider staircase up to the garden had also been included.

Mr Deutsch said interstate suppliers had been the preferred choice to source from supplies of concrete and steel for construction, but local businesses had been chosen instead due to coronavirus restrictions in place mid-year.

"We did have ambitions to get some materials further afield where we've had to use local suppliers," he said.