As NSW reels from fires that have claimed a life and hundreds of homes, Territory and Municipal Services (TAMS) has admitted workers are struggling to maintain more than 4500 kilometres of fire trails throughout the ACT after severe storms in 2010 and 2012.

Dozens of fire trails still bear damage from the storms, which caused extensive damage across parks and reserves.

Two bridges are impassable in Namadgi National Park, where firefighters this month extinguished the first blaze of the season. Dozens of trails closer to residential areas remain damaged.

A coronial inquiry into Canberra's 2003 bushfires investigated issues with ACT fire trails. It found key tracks were overgrown and that some were impenetrable at the time of the fires.

An expert witness at the inquiry warned of the risks of poor maintenance of fire trails. Improving access to the trails was among the 61 recommendations handed down.

TAMS fire unit manager Neil Cooper said although there were some tracks he would like to see in better condition, the damage did not pose a threat to Canberra.

Mr Cooper said maintenance works were on target "within the budget we have".

"It's never enough," he said.

"You could give us five times the amount and we could do the work."

Mr Cooper said workers were still repairing damage from the storms. They had made work on tracks near residential areas a priority before focusing on outlying parks and reserves.

"The trails are 'trafficable'," he said.

"It's a bit like owning the Harbour Bridge. You get to the end and you've got to turn around and do more."

Liberal MLA Brendan Smyth, however, has raised concerns over the maintenance of the trails in the territory, saying that a lack of upkeep could limit the movements of firefighters during blazes.

The shadow minister for emergency services said many projects and trail upgrades scheduled for the previous financial year were yet to be completed.

"To find that major storm damage that occurred in December 2010 and March 2012 also hasn't been entirely repaired is of a major concern," he said.

"Given that there is huge fire potential in the coming season, you have to ask the question, 'is the government taking bushfire safety seriously in the ACT?' "

Mr Smyth was also concerned about the removal of a Parks Brigade pumper tanker at the Tidbinbilla Nature Reserve.

The tanker was moved to Googong after a Rural Fire Service facility was opened near the reserve.

A spokeswoman for TAMS said the most common type of damage to fire trails was the formation of deep gullies.

She said all tracks had been worked on at least once since the 2003 bushfires. More than 70 kilometres of trails had been built or upgraded over that period.

“The fire trails have been repaired are based largely on the strategic importance of the trails,” she said.

She said storms would continue to pose threats to maintenance schedules, with the potential for further deterioration or damage by fallen trees.

“Resources that would otherwise be allocated to other fire prevention activities must then be allocated to clearing trees from fire trails and repairing damage,” she said.

While routine maintenance work continues, ACT Emergency Services Agency Commissioner Dominic Lane said there was “always more work to be done” on the trails.

“By their very nature, fire trails are not a road,” he said.

“Our firefighters are trained in how to navigate that terrain.”