Ben Harrison believes the remaining loose bitumen on the road could cause accidents among both cyclists and motorists.

Contractors recently carried out works widening Edwards Road, from near the base towards the lookout, installing safety barriers as part of a Black Spot improvement program.

The section of road had been blocked for a period when most of the work took place, but was recently reopened.

Mr Harrison said it appeared the work had been left incomplete in sections.

"Every corner is covered with loose bitumen," he said.

"The work started off really good, you could see the difference it was doing to the road. But towards the end, it's become a lot worse.

"The last bit has been put together very quickly."

Dozens of cyclists use the stretch of road, reaching relatively high speeds on the descent from the lookout. Cyclists currently drift onto the opposite side of the road to avoid the loose bitumen.

Mr Harrison regularly cycles on the road, and also rides his motorcycle on the region's picturesque roads. He said the corners could also be an issue for descending motorcyclists.

"If it's going to be reopened in this sort of state, they really need to put up safety signage warning people of loose bitumen on the road," Mr Harrison said.

"The scariest part is definitely the corners. As you can see, cyclists are going on to the wrong side of the road."

The City of Greater Bendigo reopened the section of road and plans to carry out additional works in the coming weeks.

Manager of engineering and public space Brett Martini said final works would be completed in "between one and two weeks".

"The works haven't been finished yet," he said.

"There is an element of loose aggregate on the road, which will be swept off before more lining work takes place.

"This type of sealing work is quite common."

Edwards Road remained the only major route to the lookout for vehicles after One Tree Hill Road was closed to traffic in March.

Mr Martini said the road would not remain in its current state and assured residents safety would be a priority before it was permanently reopened.

"Future works will make a bit more aggregate become loose, but that will also be swept away," he said.

"Council is aware that a lot of cyclists and pedestrians use that section of Edwards Road.

"In the meantime, users of the road should be aware that there may be some loose stones and to show a degree of caution."

The City of Greater Bendigo chose to close One Tree Hill Road in March after it was the site of two accidents in five years.