A parish council is concerned the car ferry over Windermere is at risk.
The ferry runs every 20 minutes between Bowness and Far Sawrey, cutting out a 15 mile drive around England's longest lake.
Claife Parish councillors worry maintenance periods of three to four weeks between Easter and the Spring Bank Holiday will put the service in financial jeopardy because of damage to customers' confidence in the service and loss of earnings.
A county council spokesperson said the ferry is due a five year maintenance overhaul this Easter and it will be investing £300,000 in it in the future.
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