Sylvania Highway 1 is a major north-south state highway entirely within the state of Sylvania that spans from the village of Charleston in the north to its terminus at Highway 4, near the hamlet of Clave Rock. The highway was built in 1992, following increasing traffic on Pineapple Road due to the popularity of Charleston as a tourist location. After the planning and construction of the 2010 Highway Plan, Sylvania Highway went under renovation and had its terminus reconstructed into the newly constructed Highway 4.