The Fire Service said it will make more helicopters available.
Police are helping with traffic control.
Power has now been cut from lines near the Lewis Pass fires.
Six fires started in close proximity, 10km north of Hanmer Springs just after midday.
Twelve appliances and four helicopters are now fighting the blazes.
The fires have jumped State Highway 7 which was closed after 1pm.
Fire Shift Commander Andrew Norris says they've had to cut power from the biggest lines in the area, to make it safer for crews and lessen damage to the cables.
First image of the fire took photographer by surprise
Christine Bonthron drove through the Lewis Pass earlier today.
She turned off to Hanmer Springs to stop for lunch and took photos down the valley.
It was only when she heard sirens in the township and she checked her photos that she saw smoke in the background. The photos were taken at 12.05pm.
"We're just very pleased and lucky to have got through when we did," she said.
Long lines of backed up cars and frustrated drivers are stuck at either end of the Lewis Pass roadblocks.
A groom caught out by the fires hopes they are put out before his wedding in Hanmer Springs tomorrow.
Wedding guest Daena Markow says she and around 20 other guests, as well as the groom, have been stopped at the fire cordon, unable to reach Hanmer Springs.
"Hopefully we'll be able to get through between now and when it's supposed to be at 3pm tomorrow," she said.
Police have told her to either wait it out at the cordon or back towards Culverden.
Police are warning people to avoid the following areas as a number of road closures and cordons are in place due to the scrub fire burning near the Hanmer Springs turn off on State Highway 7.
Police say the cordons are in place to "keep people safe and ensure the people and helicopters fighting the blaze can do so without obstruction".
"Please follow the instructions of police and other emergency staff if you are in these areas and avoid travelling into the wider region if at all possible," police said.