AMP: 0 Location: S Frontage Rd and Providence Pk, Killingly SSR 435 follows an old US 6 alignment a quarter mile to Old Furnace State Park. AMP: 0 Location: S Frontage Rd at Old Furnace State Park 435 ends less than a quarter mile later just past the entrance to the state park. Curiously, the … Continue reading Connecticut Special Service Road 435, US-6 to Old Furnace State Park