"I've never seen potholes like it," Ian Braid says.
The former long-serving roads minister and ex-Kentish mayor has seen a lot of roads in his time.
Mr Braid said he was appalled by the state of some of the roads these days, particularly the pothole-riddled Bass Hwy, and some of the maintenance.
Infrastructure and Transport Minister Michael Ferguson during the week said he had asked for immediate intervention from his department with the contractor.
He said the contractor would be held to account and the highway would be returned to "proper condition".
Mr Braid, who was Liberal roads minister from 1982-89 and again from 1991-95 and dealt with more roads issues in a later stint with the council, said taxpayers and motorists wanted to see value for their money.
"The preservation of our huge road assets is of major importance," he said.
"The delaying of repairing deteriorating roads is false economy and this shows up in wet seasons.
"With a contracting road system, it is essential for the department to have a competent contract administration to audit and supervise and make sure that the contract between the government and the contractors is fulfilled.
"In the roads portfolio, there needs to be a hands-on minister."
Mr Braid said he had never seen the Bass Hwy in such condition, and he believed he knew why.
He said it seemed road repairs were not done deeply enough these days.
"They've got to make sure they get to the solid base," Mr Braid said.
"If water gets in the road, it falls apart, it lifts up ..."
RACT advocacy officer Garry Bailey during the week said the state of the highway was not good enough.
He said the the club had been calling for the highway between Devonport and Launceston to be upgraded for a number of years.
The State Growth Department said heavy rain had caused potholes and other issues along many parts of the highway.
Mr Ferguson said heavy rainfall was not unusual and motorists were right to ask questions.