Connecticut Route 171

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Route 171 marker

Route 171
Map of northeastern Connecticut with Route 171 highlighted in red
Route information
Maintained by ConnDOT
Length: 20.70 mi[1] (33.31 km)
Existed: 1959 – present
Major junctions
West end: I-84 in Union
East end: US 44 / Route 12 in Putnam
Counties: Tolland, Windham
Highway system
  • Routes in Connecticut
Route 169 Route 172

Route 171 is a state highway in northeastern Connecticut, running from Union to Putnam.

Route description[edit]

Route 171 begins at an interchange from I-84 in northern Union (Also known as Mashapaug) and heads south to the town center, then east, south, and southeast into Eastford. It cuts across the northeast corner of Eastford into Woodstock. In Woodstock, it heads southeast, then turns northeast, briefly overlapping Route 198 before continuing. It then passes Toutant Airport and turns east, briefly overlapping Route 169 before cutting across the southwest corner of Thompson into Putnam. In Putnam, it continues southeast before ending at an intersection with US 44 and Route 12.[1]


CT 171 at CT 169 in Woodstock

The portion of modern Route 171 between South Woodstock and Woodstock Valley was part of an early toll road known as Woodstock and Somers Turnpike. This section of the turnpike became part of a state highway in 1922 with the designation Highway 183. Old Highway 183 continued south of Woodstock Valley to Eastford along modern Route 198. Between Putnam and South Woodstock, modern Route 171 was part of Highway 142, which continued north along modern Route 169 to North Woodstock and the Massachusetts state line. In Union, the Buckley Highway became Highway 149.

In the 1932 state highway renumbering, Route 91 was created from old Highway 183. It began further south than the old route at US 6 in Chaplin using modern Route 198 and extended further east to Route 12 in Putnam (along part of old Highway 142). At the same time, the Buckley Highway became part of Route 15 and Bigelow Hollow Road became Route 198.

In 1959, Route 91 was renumbered as a result of the designation of Interstate 91 to avoid a numbering conflict. Route 171 was created from part of former Route 91, running from Woodstock Valley to the current eastern terminus at Route 12. The portion between Woodstock Valley and Chaplin became part of an extended Route 198. In 1963, Routes 171 and 198 were reconfigured to their current locations, resulting in part of Route 198 being redesignated as a westward extension of Route 171.[2]

Junction list[edit]

County Location mi[1] km Destinations Notes
Tolland Union 0.00 0.00 I-84 – Willington, Boston, Hartford, New York City Exit 74 (I-84)
2.76 4.44 Route 190 west – Stafford Springs
5.04 8.11 Route 197 east – North Woodstock
Windham Woodstock 9.53 15.34 Route 198 south – Eastford Southern terminus of CT 198 overlap
10.43 16.79 Route 198 north – Southbridge, MA Northern terminus of CT 198 overlap
17.17 27.63 Route 169 north – Southbridge, MA Northern terminus of CT 169 overlap
17.53 28.21 Route 169 south – Woodstock Southern terminus of CT 169 overlap
Putnam 20.70 33.31 US 44 / Route 12 – Killingly, Pomfret, Thompson, Glocester, RI Eastern terminus of CT 171
1.000 mi = 1.609 km; 1.000 km = 0.621 mi


External links[edit]

Route map: Bing / Google

KML is from Wikidata