A trainline has been completely closed due to “significant damage” to its sea defences.
Network Rail confirmed the Far North Line between Brora and Helmsdale remains closed after the operator identified significant damage to the line’s sea defences.
Structural engineers were sent to investigate on Monday afternoon with the line closed to all services.
The operator says high tide is proving a challenge for engineers to assess what repair work is required to reopen the line.
Remedial works are expected to begin on Tuesday afternoon.
ScotRail confirmed alterations to a number of services including on the Wick to Inverness line.
Early morning trains on Tuesday have been replaced with coaches, terminating at Lairg and Invergordon.
Mini buses have also been put in place for passengers requiring drop offs with disruption expected to last throughout Tuesday.
Network Rail posted on X: “The line still remains closed, but we expect specialist engineers to be on-site at around midday to begin remedial works.
“More information to follow.”
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