The highway is a popular scenic bypass of Highway 9, which runs through the more populated Huatung Valley. The highway attracts visitors for its unique rock formations along The East Coast National Scenic Area, such as Shitiping (石梯坪) in Fengbin, Baxiandong archeological site (八仙洞遺址) in Changbin, as well as Sanxiantai (三仙台) and Shiyusan (石雨傘) in Chenggong. The highway also passes through Chihpen, a suburb in Taitung City known for its hot springs.
Provincial Highway No. 11A: The highway starts at Highway 9 in Guangfu, Hualien and ends at Highway 11 in Fengbin, Hualien. It was an old segment of Highway 11 until the new route to Ji'an was built. The total length is 19.291 km.
Provincial Highway No. 11B: The highway starts at Highway 9 and ends at Highway 11. The highway was an old segment of Highway 11, and is entirely located within Taitung City. The total length is 7.405 km.