A well-used footpath, which runs alongside a Sudbury supermarket, has been closed without warning.
The pathway linking Newton Road and Cornard Road, near to the town’s Sainsbury’s store, was shut off earlier this week.
A notice put up by Suffolk County Council said the footpath would be closed for the “foreseeable future” and an alternative route was being looked into.
John Sayers, a town, district and county councillor, said the decision to restrict access would leave many people disgruntled.
“It is well-used by dog walkers and is a link to the meadows,” he said.
“I do not know the reason for the closure. It is a bit of a bombshell as there has been no consultation about this.”
The path is close to a woodland area which is home to a wide range of wildlife.
Last year, worries were aired about the site due to damage to the perimeter fencing.
A £10,000 donation from Sainsbury’s – agreed as part of a range of conditions associated with the development of the site – was to be spent on resolving the problem.
Mr Sayers said he was not hopeful the footpath would open any time soon.
“Barriers are being put up at either end so this is not short-term,” he said.
“An alternative route in Ingram’s Well Road would be disastrous due to the number of cars parked down there.”
A county council spokesman said concerns had been raised about the safety of the path and it had subsequently been closed to ensure public safety.