AMP: 0 Location: Old US 6 and South Rd, Farmington SSR 423 is unique as the only state highway totally disconnected from the system. It follows an old routing of US 6 for a third of a mile to a DOT maintenance facility. AMP: 0 Location: Old US 6 and South Rd, Farmington No signage … Continue reading Connecticut Special Service Road 423, South Rd to CTDOT Maintenance Facility