 The state highway passes Orange County Airport and intersects US 522 (Zachary Taylor Highway) between Unionville and Rhoadesville.SR 20 briefly passes through part of Fredericksburg and Spotsylvania National Military Park near the site of the Battle of the Wilderness before reaching its northern terminus at SR 3 (Germanna Highway) in the community of Locust Grove just west of the Spotsylvania County line.SR 20 was first created in 1933 with the renumbering of SR 316 between US 15 in Dillwyn and SR 6 in Scottsville and a separate section to the north that replaced SR 702 between SR 231 in Somerset and SR 3 in Wilderness.