Highway 94 Wineries Seriously Close Adventurous wine tasters, take note: Highway 94 is more than just a fun, backroads, scenic country drive. A drive on the two-lane highway east of Rancho San Diego will take you through the towns of Jamul, Dulzura, Barrett Junction, Portrero and Campo. This is the Highway 94 wine trail. Off the beaten track. Not Napa. No tour buses…yet. In summertime, the vines are green, laden with ...