The A9 is set to be closed in several locations in Caithness and Sutherland next month as works are carried out to improve the road surface.
Overnight closures on the A9 northbound are set to take place from April 24.
Repairs to Struie High Bridge was subject to council repairs.
Vital infrastructure improvements that could transform the reliability of trains in the northern Highlands appear to be in limbo.
Hopes cycling and luggage capacity could be dramatically increased on railway services in the north Highlands seem to have been dashed by rail chiefs.
A lack of progress in reopening a Highland railway station that was temporarily shut in a row over access, is “concerning”, say local politicians.
Once work starts on the A9 Tomatin to Moy stretch there will be no let up until dualling is complete from Perth to Inverness say Transport Scotland.
Essential improvement works on the A9 near Inverness are set to begin on Tuesday for nine nights.
The news comes as the company posted an operational loss of £4.9m in its latest annual report.
The A836 will be closed at Lairg Railway Station later this month while a refit is carried out on the level crossing, Highland Council has warned.