More than 410,000 hectares have burned across the state, destroying 770 structures, including 228 homes.
That makes the scale of this month's fires similar to the Black Saturday fires of 2009, which killed 173 people.
On Thursday, a coalition of volunteer and career firefighters gathered on the steps of Victorian parliament to call for an urgent inquiry into the ongoing fires.
"Firefighters on the front lines have been speaking out about the lack of safe appliances, equipment and basic resources," CFA Volunteers Group president John Houston said.
According to the union, 792 CFA tankers are out of date, unsafe and should be off the road, including 230 tankers more than 31 years old.
"What we are seeing now is the enormous consequence of governments ignoring those warnings while firefighters are placed at unnecessary risk and communities pay the price," United Firefighters Union Secretary Peter Marshall said.
The group has been campaigning about the lack of investment and the dangers posed ahead of the summer bushfire season.
Country Fire Authority chief officer Jason Heffernan said on Wednesday that firefighters were blaming themselves for the losses in the community.
He added the fires were unstoppable once they flared under catastrophic conditions.
"The reality is there is nothing they could have done other than warn the community, get the community out of harm's way and fight fire where it was safe to do so," he said.
"In the majority of cases, it was just simply not safe to do so."
State Control Centre spokesman David Nugent told AAP that two significant fires in the state's north were expected to burn for weeks, although crews had made positive progress in containment.
The Longwood fire has burned about 136,000 hectares, while the Walwa fire has burned 100,000 hectares.
"Those fires are continuing to burn, although under the conditions the fire behaviour will be less active, which is great for us," he said.
Mr Nugent says 770 structures have been lost, with fears more have been destroyed.
"They're big numbers unfortunately and as we continue to assess that damage... the numbers tend to increase," he added.
The Victorian Farmers Federation estimates statewide livestock deaths at 16,500, mainly sheep, from the ongoing fires.
– With AAP