A 3D scan of one of Orkney’s historic Churchill Barriers will get underway next week.
The scan is needed after routine inspections found deterioration in the road surface on the first barrier between Lamb Holm and the Orkney Mainland.
The detailed survey will get on Wednesday, April 26 with a single lane system in place while work is carried out.
Short periods of full closure will also be required during laser scanning.
The work is expected to take around three days to complete but is highly weather dependent.
The results of the survey will be used to assess the current condition of the barrier and options to prevent further deterioration.
The barriers are a series of causeways built in the 1940s to protect ships anchored in Scapa Flow after a German U-boat was able to enter the harbour and sink the HMS Royal Oak.
Now they carry the A861 from Kirkwall to Burwick on South Ronaldsay.