AMP: 5 Location: Plains Rd and CT 9, Essex No signage as CT 153 begins, passing under CT 9 as it heads towards Westbrook. AMP: 5 Location: Plains Rd and CT 9, Essex Turn left for CT 9 south and right for SR 621. AMP: 5 Location: Plains Rd and CT 9, Essex Reassurance shield … Continue reading Connecticut Route 153, CT 9/CT 154/SR 621 to SR 604