The Cairngorms National Park Authority will discuss options for dualling part of the A9 Inverness-Perth road next week.
Members of the planning committee will be asked to respond to Transport Scotland’s consultation on the Pitgowan to Glen Garry section, to the south of Drumochter.
Four proposed route options have been drawn up for the stretch, which includes a crossing of the River Garry and a major junction at Calvine.
For the majority of the options, the widened road will follow the existing route. However in some areas, the road will be built along a new route.
Each includes a grade-separated junction at the B8079 Bruar/Calvine junction, while two of the options include a new overbridge.
National park officials have given their backing to option 1, which has the smallest footprint and the lowest landscape and ecological impact.
When a preferred route is chosen, further design work will be carried out. Work on the Pitgowan-Glengarry stretch is expected to start in early 2016.
The board will discuss the proposals at their meeting on Friday October 16 at the Victoria Hall in Ballater.
Meanwhile Murdo Fraser, MSP for Mid-Scotland and Fife, has been given an award for his campaign to dual the notorious road.
Mr Fraser was honoured with the second Scottish Road Safety Parliamentarian Award by the charity Brake and Digby Brown Solicitors.
His campaign attracted tens of thousands of supporters.
The Scottish Government has pledged to invest £3billion in upgrading more than 80 miles of single carriageway.