RG, thanks for the article on the "Wine Trail" with the six local wineries flourishing in their "unique microclimate  in the coastal foothills."
However, it's time we take a closer look at the geography there.  Several are described as being in Junction City, but that is only their official address because  it's the nearest city.  However, all are actually   to the west of JC, and in fact are west of Territorial Highway and the Long Tom River.  Your directions of driving north on 99 to JC are OK for those who live in Eugene, but not for all of us in Central and Western Lane County. We simply drive north  on historic Territorial Highway, which Eugeneans and Springfielders can also do after driving west to Veneta, to "enjoy the country drive with beautiful scenery all around."

While  "Prairie Mountain"  is a special area, you'll find a scattering of  fine wineries  and a few restaurants all  along Territorial by  the Coast Range  foothills south  to Lorane.  
Think NS, not just EW!