 In 1941, the southern section was extended north from SR 6 to US 250 in Charlottesville, and the northern section was extended south from SR 231 to US 33 in Barboursville.In 1950, the two sections of SR 20 were finally connected via a replacement of SR 613 between Charlottesville and Barboursville.In May 2019, the intersection of SR 20 and I-64 was changed.