In 1930 and '31, State Highway 202 was the numbering for present-day Route 72 between US 6 in Plymouth and Route 4 in Harwinton.
In 1932, this road became part of the old Route 117. A new Route 202 was assigned to a 9-mile route in Pomfret and Killingly, from Route 93 (now Route 169) to the Rhode Island state line:
- Killingly Road and Hartford Pike (today's Route 101), from Route 93 to Route 12
- short overlap with Route 12 to Dog Hill Road
- Dog Hill Road and Cat Hollow Road to Valley Road
- Valley Road to Hartford Pike
- Hartford Pike (today's Route 101) to the state line
At that time, Hartford Pike between Route 12 and the eastern Valley Road junction was not a state road.
In 1935, Route 101 (which predated US 44 and ran along its path) was moved southward to its current routing and 202 was retired as a state route. In late 1935, a new highway (now part of Hartford Pike) opened from Route 12 to the state line, becoming the new alignment for route 202/101. A segment of Valley Road, from about Cat Hollow Road to Burlingame Road, remained in the state system (as an unsigned state road; number unknown) until 1941 or later.
Though the 202 number didn't last long as a state route, either time, it has since enjoyed long life as US 202, which was commissioned in 1935.
(If you're poring through old articles, "Dayville Four Corners" is where routes 12 and 101 cross.)