freebeer
Ames can be seen in the multi-coloured autumnal Bing sat imagery at this intersection and selected spots north as a fully-gravel (probably) road.
Interlaken is visible as a trail (ESRI) for half its length, with the occasional pair of tyre impressions on gravel or dirt.  Not in TIGER 2017 though.  I'd change it to track.
USGS is also helpful, but with no real leaf-off imagery I cannot say anything about the possibility of a path less travelled underneath the leaf cover immediately south.
That's probably exactly what you see too.
