The 16m structure for the Upper Deeside Access Trust has been designed to be airlifted to the site by helicopter to reduce the impact on the surrounding landscape.
Sitting at the foot of the Mount Keen, the bridge would be an overdue replacement for an original crossing, which was washed away in 2002.
'The detailing of the concrete abutments has been designed to blend with the banks, while the superstructure is of European larch felled from a stand of trees less than two miles from the site,' said practice founder Ben Addy, one of the AJ's 40 Under 40 architects.
He added: 'All elements of the scheme, apart from the foundations, have been designed for off-site fabrication to ensure a robust finish and minimal disruption to the site during construction.'
The scheme, which has just been submitted for planning, has been developed as part of the East Cairngorms Access Project.