Drivers have been warned to expect delays as two giant transformers are delivered to a power station in Sutherland next week.
Each weighing 145 tonnes, they will be delivered by sea to Invergordon where they will be loaded onto trailers for the final stage of their journey to Loch Buidhe substation, near Bonar Bridge.
Slow-moving convoys with a police escort are expected to set out from Invergordon at 5am on Tuesday and Friday next week.
They will make their way up the A9, across the Dornoch Bridge and into Bonar Bridge via Spinningdale on the A949.
The trailers will then turn right on to the Migdale road, where a series of improvements have been made over the past 18 months to strengthen and widen the existing road surface in preparation.
Scottish and Southern Electricity Networks project manager Russell Stewart said: “Every stage in the journey of these transformers has been carefully planned, going back five years to the earliest stages of developing plans for the new substation.
“Once they arrive and are installed on site, they are expected to play a key role in the network for decades to come.
“Our team will be working alongside our specialist haulier, the roads authorities and the police to make sure each delivery can be completed smoothly, safely and with minimum disruption to other traffic.”
