VicRoads has been working with a private highway contractor to establish why a section of the Western Highway has fallen apart.
The stretch of road near Burrumbeet has had speed restrictions in place for up to a month as workers completed repairs.
VicRoads regional director Nigel Powers said duplication works between Ballarat and Stawell would make the highway safer.
“We are working with the contractor to understand why a recently constructed section, between Burrumbeet and Beaufort, has suffered some deterioration,” he said.
Planning on the Western Highway’s Beaufort Bypass will also move into the next phase early in 2018.
Geotechnical investigations on the $50 million bypass and field investigations are set to start.
Land owners with the area of interest will be notified.
Acting regional director Mal Kersting said VicRoads had presented three draft bypass options to the community in April.
“The original options were developed during the first round of designs and consultation with community and stakeholders,” he said.
“Since then, we’ve been using your feedback to help us refine the draft options and start detailed site investigations.
“We’re planning another information session for early in the new year to seek feedback on these options.
“A bypass will improve road safety and make the town a great place to live and visit by removing trucks from the centre of Beaufort.”
Meanwhile works on new overtaking lanes on four sections of the Midland Highway near Lethbridge are well underway.
A long stretch of the road has had speed restrictions in place near Meredith during the upgrade.