In 1931, State Highway 216 followed today's Route 49 and Route 14A from Stonington to the Rhode Island state line at Sterling. This is very close geographically to the modern Route 216, and I wondered if the number was retained because Rhode Island carried over its Route 216 from before 1932. Unfortunately, no maps I have show this.

The modern Route 216 was commissioned between 1932 and 1934. Its original reported length in Connecticut was 3.66 miles: longer than today. Perhaps it followed Dennison Hill Road north to Laurel Glen, and then Putker Road to Route 49. I haven't found enough detail on this issue yet.

• Route 216 Ends (Photos; Doug Kerr at state-ends.com)
• Route 216 - Google Maps