Flash flooding in March and unusually high winter rainfall is taking a toll on regional roads creating dangerous conditions for drivers.

Hundreds of kilometres of repairs are needed but some shires say they don't have the workforce or the funding to repair the damage.

In the Avon Valley, the shires of Toodyay and Northam are among several who face a mammoth roads repair job.

Toodyay shire president Rosemary Madasci estimates half of Toodyay's 650-kilometre road network needs repairs.

With a small ratepayer base and roads crew of just eight, she warned repairs would be a while coming.

The case is similar in Northam which reports 400 kilometres of road in need of repair – at a cost of about $2.1 million.

The shire has already applied for Disaster Recovery Funding after several Wheatbelt shires were declared eligible in the wake of the March floods.

But shire president Chris Antonio said repair work was hampered by a lack of road contractors.

"We're all trying to get the same contractors and we've got our own staff doing as many jobs as they can, and that's mainly to make it safe," Mr Antonio said.

A spokesperson for Main Roads said the department was aware of the problems, and facing similar issues on some of its roads network.

The spokesperson encouraged eligible regional shires – including Northam, Toodyay, Victoria Plains, Mt Marshall, Dalwallinu and Dandaragan – to apply for funding under the Disaster Recovery Funding Arrangements.

Mr Antonio encouraged drivers to take it easy on regional roads, in the meantime.