The modular unit, which was promised two years ago to relieve overcrowding at Mayo University Hospital's Emergency Department, will still not be in place this Winter.
The Health Minister announced the measure in 2016 to help tackle overcrowding, but it has now emerged that planning permission has not yet been sought for a modular unit at the Castlebar hospital.
Fianna Fail Councillor Michael Loftus says it's a disgrace that, as we head into another Winter, the facility is not yet available.
Councillor Loftus attempted to raise the matter at this week's meeting of the HSE Regional Forum, but told Midwest News he was unsuccessful in doing so.
He says it's unfair on the people of Mayo that the promised modular unit has not yet been put in place.