Transport Scotland has announced ground investigations are to be carried out on small sections of the A9 between Perth and Inverness.
The work will gain 'vital' information on the existing carriageway for the A9 Dualling programme beginning 3 August.
Advance ground investigation works will be carried out on the northern section of the A9 and is expected to take five days.
In addition, more detailed ground investigation works are to be carried out for 12 weeks on a number of locations on the central stretch between Dalnaspidal and Kincraig.
The ground investigation works are expected to begin on 3 August along with the dualling programme.
Transport Scotland are warning motorists traffic restrictions will be in place while the work is taking place.
(LM)
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