Budget constraints and TT course maintenance mean other roads are left without important work being completed.
Director of Highways Richard Pearson says he's very aware many roads aren't in the best condition.
However, he says annually the TT circuit needs between £600,000 and £700,000-worth of work, and that gets priority.
Mr Pearson admits some roads aren't how he'd like them:
Another Peel commissioner challenges official account of beach stage decision
Stuart Hardingham says vote took place as conflicting accounts continue to emerge
Peel coastguard responds to report of possible human remains on a beach
Experts confirmed they were more likely from a marine mammal
'Disappointing' third delay to new local government bill
Douglas Councillors blame controversial clause five for the setback
Former Peel commissioner questions Baptist's claims in ongoing dispute
Alan Jones says board decisions require collective responsibility as differing views continue to emerge
