Fire authorities are working to allow public access back into the town of Tharwa, as milder weather eases conditions across the firegrounds.
While a break in the hot weather has allowed firefighters to carry out more backburning, the Orroral Valley fire remains out of control.
The fire is burning at an advice level as of 9am on Thursday and has burnt 84,680 hectares, or 35 per cent of the ACT's land mass.
Emergency authorities have warned the fire is still erratic and is active on the western side of the fireground.
A spokesman from the ACT Emergency Services Agency said crews hoped to reopen roads as soon as possible.
"Specialised teams continue to assess all roads and road closures as a priority, to reopen once deemed safe," the spokesman said.
"The aim is to try and allow public access back into Tharwa Village as soon as possible."
As of 9am on Thursday, the following roads were closed to drivers:
- Angle Crossing at the Monaro Highway
- Point Hut Road at Jim Pike Avenue
- North Street from Union Street in Tharwa
- Naas Road at Smiths Road
- Smiths Road
- Naas Road at the Namadgi Visitors Centre
- Corin Road at Tidbinbilla Road
- Boboyan Road at the NSW/ACT border
Fire authorities have said while no properties are under threat from the fire conditions on the firefront could change and worsen.
The Orroral Valley fire has sparked a number of spot fires in the area over the NSW border.
The Scabby Range fire, burning in the Shannons Flat area, started on Wednesday afternoon and has burnt more than 900 hectares.
After being elevated to a watch and act alert on Wednesday, the fire was downgraded overnight to advice following calmer conditions.
The Clear Range fire, which has destroyed several homes in the Bumbalong Valley area, was also upgraded to a watch and act on Wednesday but was at advice level as of 9am on Thursday.
Those in the Bredbo, Shannons Flat, Colinton and Michelago areas have been advised to monitor conditions.
The Calabash fire, also at advice level, also continues to burn, having destroyed more than 3500 hectares.
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