AMP: 1 Location: West St and Main St, Rocky Hill No signage as SSR 411 begins. 411 primarily exists to serve Dinosaur State Park, which features real live dinosaur tracks. AMP: 0 Location: West St and Gilbert Ave, Rocky Hill As we pass by Dinosaur State Park, stay straight to connect to I-91. AMP: 0 … Continue reading Connecticut Special Service Road 411, CT 99 to I-91