 US 460 passes by the communities of Conaway, Big Rock, and Artia before entering the town of Grundy, the county seat of Buchanan County, as Riverside Drive.The highway expands to four lanes and then becomes a divided highway as it approaches the center of Grundy, where the slopes of the hills have been blasted away to improve flood control, relocate highways to higher ground, and create more usable land for building.US 460 meets SR 83 (Edgewater Drive) at the confluence of Slate Creek and Levisa Fork.