 When the new expressway opened, Route 20 was relocated to use most of the Connector and was truncated to end at I-91.Route 140 was extended west across the Connecticut River to use the former Route 20 alignment in Windsor Locks and Route 190 was extended east to use the former alignment between Enfield and Union.Since the 1960s, it was suggested that the connector be elongated to serve other northern Connecticut towns.