While there are still a couple of 'rough surface' signs along the road, both lanes, in both direction, are fully open.

The road was first completed in 2015, but parts were closed through the winter this year as the surface deteriorated.

Many drivers commented on the road work zones through the winter, as damaged sections were still signposted at 40km/h despite no visible workers in the area.

The road was fully reopened on October 7.

Major Road Projects Victoria's program director Tim Price said in a statement drivers can now use all lanes.

"(T)he speed limit has returned to 110km/hr following successful repairs to the road surface in the area," he said.

In a statement, a government spokesperson said contractor John Holland Group completed both the original 2015 project and the later repairs.

"Major Roads Project Victoria has a rigorous procurement process to ensure contractors such as John Holland Group deliver the best value for the community, and I am advised they are working with them to ensure high work standards," they said.

MRPV will conduct regular safety inspections of the road and will continue to work with the contractor for any necessary future repairs.

Elsewhere across Ballarat, as reported on Monday, the developer-funded road improvements on Ballarat-Carngham Road will delay drivers for the next three weeks, with diversions along Cuthberts Road.

The state government reiterated its commitment to building a roundabout at the Dyson Drive intersection, and replacing the current roundabout at Wiltshire Lane with traffic lights, but did not provide an update on when work will begin.

"Regional Roads Victoria is currently finalising a timeline for the delivery of these works, beginning in early 2020, and will keep the community informed closer to the start of these projects," a spokesperson said in a statement.

The $60.8 million project will improve six areas, with traffic lights on the Glenelg Highway at the Wiltshire Lane and Midland Highway intersections, an expansion of the Midland Highway to four lanes between Queen and Docwra streets in Sebastopol with a new roundabout at Docwra Street, and a new school crossing near Magpie Primary School.

There will also be a new set of traffic lights at the Gillies Road and Gregory Street West intersection in Wendouree.

Separately, improvements to crossings on the western end of Sturt Street are ongoing. A set of traffic lights has also been promised on Nolan Street, to aid traffic flow for the new entrance to the Ballarat train station car park.

More road works have also begun on Mair Street, to help "future-proof" the city as the GovHub project continues.

More than 13,000 vehicles currently use this section of Mair Street each day, with traffic levels expected to increase to 17,000 vehicles per day by 2040.

The section between Humffray and Princes streets is the focus for the next set of works, which will include an extra lane for west-bound traffic, a new centre median, and improved cycling lanes.

Work is expected to be complete by November.

The next set of work will focus on the Davies Street intersection, with angle parking converted to parallel parking to improve traffic flow.

The state government has promised an extra lane, pedestrian-operated traffic lights, and a new centre median.

While these works are expected to be completed by March, it will pause for the Christmas break between December 1 and January 13.

Another set of traffic lights has been proposed for the Dawson Street intersection, replacing the roundabout there.

"People use Mair Street for a range of purposes, and whether they're heading to work, dropping the kids to school or visiting the shops - these works will make travelling through the city's centre safer and easier," the spokesperson said in a statement.

"This is just one of the projects helping to future-proof Ballarat's road network and ensure it's equipped to cater for the city's growing population."

Drivers are encouraged to be patient throughout the entire road work program.

The Courier