This is an old road repurposed as a short trail at Jaymar Park. I know nothing else about it at this time.
The park is named, apparently, after the Jaymar Mill that was on the river to the north of this location.
http://hoodriverparksandrec.org/westside-community-trail/
Concrete ruins of JayMar lumber mill
http://www.panoramio.com/photo/74333974
JayMar cove
http://www.panoramio.com/photo/81473645
JayMar lumber pilings and detritus (Sept low water)
http://www.panoramio.com/photo/81473631