Roundabouts Database Index

30012 Results

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City, State County Country	Intersection (Lat, Lng)	Type Status	Control Type / Other Control Type	Approaches / Driveways / ICD (m)	Functional Class / LaneType	Year Completed	Comments
Riverhead, NY Suffolk Co. United States	Osborn Ave. / Middle Rd. / Horton Ave. (40.93469, -72.69623)	Roundabout Existing	All-Way Yield Unknown	5 Approaches 0 Driveways 54.8640	Other (At-Grade) Single-Lane	2008	Year Completed estimated (2007-2008).
Cowansville, QC Brome-Missisquoi Regional County Municipality Canada	Rte 104 (Boulevard Jean-Jacques-Bertrand) / Rte 241 (Rue Principale) (45.20232, -72.69436)	Roundabout Existing	All-Way Yield Unknown	3 Approaches 0 Driveways	Other (At-Grade) Unknown	2023	Year Completed estimated (2015-2024).
Hartford, CT Hartford Co. United States	Park Terrace / Sigourney St. / Russ St. (41.76207, -72.69289)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane	2021	https://www.tiktok.com/foryou?is_from_webapp=v1&item_id=7016286837643791622&lang=en#/@everydayengineering/video/7016286837643791622
Northampton, MA Hampshire Co. United States	Main St (Rte 9) / Bridge Rd (42.34356, -72.68114)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 32.6618	Other (At-Grade) Single-Lane	2011	ICD estimated from Google Maps linework.
Hartford, CT Hartford Co. United States	Pulaski Circle (41.76294, -72.67616)	Rotary Existing	Other Unknown	5 Approaches 0 Driveways 0.0000	Other (At-Grade) Multilane (2 Lane, unspecified)		Yield on circulatory roadway.
Riverhead, NY Suffolk Co. United States	Rte. 58 / Roanoke Ave. (40.93315, -72.67399)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 39.7005	Other (At-Grade) Multilane (2 Lane, unspecified)	2009	Was single-lane traffic circle. Redesigned, resigned, and restriped in 2009. ICD estimated from Google Maps linework.
Shawinigan, QC Shawinigan Canada	Rte 155 / Chemin des Défricheurs (46.64104, -72.67348)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 45.9192	Other (At-Grade) Single-Lane	2013	ICD estimated from Google Maps linework.
Riverhead, NY Suffolk Co. United States	Rte. 24 / CR 94 (40.91591, -72.66968)	Rotary Existing	Unknown Unknown	3 Approaches 0 Driveways 86.6419	Other (At-Grade) Unknown		ICD estimated from Google Maps linework.
Riverhead, NY Suffolk Co. United States	Rte. 24 / (unknown) (40.91524, -72.66606)	Rotary Existing	Unknown Unknown	3 Approaches 0 Driveways 48.7366	Other (At-Grade) Unknown		ICD estimated from Google Maps linework.
Riverhead, NY Suffolk Co. United States	Flanders Rd. (Rte. 24) / Peconic Ave. / Lake Ave. / Riverleigh Ave. (40.91461, -72.66277)	Roundabout Existing	All-Way Yield Unknown	5 Approaches 0 Driveways 58.6650	Other (At-Grade) Multilane (2 Lane, unspecified)	2018	Converted from rotary to roundabout in 2018. https://riverheadlocal.com/2018/10/26/its-been-a-long-road-to-a-new-roundabout-in-riverside-but-its-officially-completed/. ICD estimated from Google Maps linework.
Easthampton, MA Hampshire Co. United States	Pleasant St. / Lovefield St. / Ferry St. (42.27616, -72.65722)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 25.9080	Other (At-Grade) Single-lane w/ Traversable Central Island	2020	https://www.wwlp.com/news/local-news/hampshire-county/ferry-street-in-easthampton-to-reopen-monday-with-new-traffic-pattern/
Bromont, QC Brome-Missisquoi Regional County Municipality Canada	Boulevard de Bromont / Chemin Bergeron / Chemin Saxby (45.33809, -72.64867)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 36.9389	Other (At-Grade) Single-Lane	2009	ICD estimated from Google Maps linework.
Westhampton Beach, NY Suffolk Co. United States	Potunk Ln. / Main St. (40.80814, -72.64700)	Roundabout Existing	All-Way Yield Unknown	3 Approaches 0 Driveways 30.4800	Other (At-Grade) Single-Lane	2019	https://www.danspapers.com/2018/07/big-plans-for-whbs-main-street/
Westhampton Beach, NY Suffolk Co. United States	Potunk Ln. / Oak St. / School St. / Brook Rd. / Mill Rd. (40.81412, -72.64636)	Roundabout Existing	All-Way Yield None	6 Approaches 0 Driveways 39.7720	Other (At-Grade) Single-Lane	2006	Oval shape. ICD estimated from Google Maps linework.
Southampton, NY Suffolk Co. United States	Collins Way / Roger's Way (40.84344, -72.64335)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 43.3684	Other (At-Grade) Single-Lane	2011	ICD estimated from Google Maps linework.
Bromont, QC Brome-Missisquoi Regional County Municipality Canada	Chemin Bergeron / Rte 10 WB Ramps (45.33627, -72.64198)	Roundabout Existing	All-Way Yield None	2 Approaches 0 Driveways 39.4587	Freeway Ramps (Grade-Separated) Single-Lane	2009	Year Completed estimated (2009-2010). ICD estimated from Google Maps linework.
Westhampton Beach, NY Suffolk Co. United States	Main St. / Mill Rd. / Library Ave. (40.81013, -72.64144)	Roundabout Existing	All-Way Yield Unknown	3 Approaches 0 Driveways 30.4800	Other (At-Grade) Single-Lane	2020	Library Ave is one-way exit to the south. Year Completed estimated (2019-2020). https://www.danspapers.com/2018/07/big-plans-for-whbs-main-street/
Bromont, QC Brome-Missisquoi Regional County Municipality Canada	Rue Champlain / (parking lot) (45.30366, -72.64072)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 47.0417	Other (At-Grade) Single-Lane		Year Completed unknown (before 2006). ICD estimated from Google Maps linework.
Windsor, CT Hartford Co. United States	Hayden Station Rd. / Pond Rd. (41.89371, -72.64065)	Roundabout Existing	All-Way Yield None	3 Approaches 1 Driveways 24.0041	Other (At-Grade) Single-Lane	1998	Functional Class: Collector. Year Completed estimated (1992-2003). ICD estimated from Google Maps linework.
Madison, CT New Haven Co. United States	Rte. 80 / Rte. 79 (41.35976, -72.63807)	Rotary Existing	All-Way Yield None	4 Approaches 0 Driveways 98.6077	Other (At-Grade) Single-Lane		Old traffic circle converted to yield on entry. ICD estimated from Google Maps linework.
Riverhead, NY Suffolk Co. United States	Quogue Riverhead Rd. / Old Riverhead Rd. (40.87822, -72.63782)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 39.7335	Other (At-Grade) Single-Lane	2012	ICD estimated from Google Maps linework.
Windsor, CT Hartford Co. United States	Hayden Station Rd. / Lancaster Dr. / Center St. (41.89280, -72.63409)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 24.8935	Other (At-Grade) Single-Lane	1998	Functional Class: Collector. Year Completed estimated (1994-2003). ICD estimated from Google Maps linework.
Northampton, MA Hampshire Co. United States	Pleasant St (US 5) / Conz St (42.31150, -72.62438)	Roundabout Existing	All-Way Yield None	3 Approaches 1 Driveways 30.0288	Other (At-Grade) Single-Lane	2015	ICD estimated from Google Maps linework.
West Springfield, MA Hampden Co. United States	Elm St. / Westfield St. / (parking) (42.10703, -72.62284)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 39.6240	Other (At-Grade) Single-Lane	2024	https://www.wwlp.com/news/local-news/hampden-county/final-phases-of-construction-of-the-new-elm-street-roundabout-in-west-springfield/
Greenfield, MA Franklin Co. United States	Rte 2 / Rte 2A / I-91 Ramps (42.58531, -72.62148)	Rotary Existing	All-Way Yield None	4 Approaches 0 Driveways 177.6285	Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified)		ICD estimated from Google Maps linework.
Northampton, MA Hampshire Co. United States	Rte 9 (Bridge St.) / Damon Rd. / I-91 NB Off-Ramp (42.33358, -72.62071)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 0.0000	Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified)	2021	Year Completed estimated (2018-2021).
West Springfield, MA Hampden Co. United States	Park St. / West St. / US 5 Ramps (42.10753, -72.61637)	Rotary Existing	All-Way Yield None	4 Approaches 0 Driveways 84.1755	Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified)		ICD estimated from Google Maps linework.
Hyde Park, VT Lamoille Co. United States	VT 15 / VT 100 / Church St. (44.59733, -72.61610)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 34.8677	Other (At-Grade) Single-Lane	2012	ICD estimated from Google Maps linework.
Glastonbury, CT Hartford Co. United States	Hebron Ave. / New London Turnpike (41.71295, -72.60499)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 15.1564	Other (At-Grade) Single-Lane	2017	ICD estimated from Google Maps linework.
South Hadley, MA Hampshire Co. United States	US 202 (Purple Heart Dr.) / N Main St. (42.22171, -72.60281)	Rotary Existing	All-Way Yield None	5 Approaches 0 Driveways 292.6080	Other (At-Grade) Multilane (2 Lane, unspecified)		Oval shaped. ICD 960 ft x 640 ft.
Glastonbury, CT Hartford Co. United States	Hebron Ave. / House St. (41.71357, -72.60121)	Roundabout Existing	All-Way Yield Unknown	3 Approaches 0 Driveways 27.6378	Other (At-Grade) Single-Lane	2018	ICD estimated from Google Maps linework.
Springfield, MA Hampden Co. United States	Springfield St / Hamburg St / Rimmon Ave (42.13225, -72.60011)	Traffic Calming Circle Existing	Other None	4 Approaches 0 Driveways 27.4571	Other (At-Grade) Single-Lane		Hamburg St stop-controlled ICD estimated from Google Maps linework.
West Springfield, MA Hampden Co. United States	Rte 147 (Memorial Ave.) / US 5 Ramps (42.09762, -72.59717)	Rotary Existing	All-Way Yield None	4 Approaches 0 Driveways 37.2202	Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified)		One of several along US 5. ICD estimated from Google Maps linework.
Quogue, NY Suffolk Co. United States	Post Ln. / Niamogue Ln. (40.81284, -72.59672)	Other Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 44.1960	Other (At-Grade) Single-Lane		Circle with roundabout features.
Morristown, VT Lamoille Co. United States	VT 100 / VT 15 / (shopping center parking) (44.57684, -72.59465)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 39.6240	Other (At-Grade) Single-Lane	2014
Agawam, MA Hampden Co. United States	Rte 57 / US 5 Ramps / River Rd. (42.08087, -72.58983)	Rotary Existing	All-Way Yield None	4 Approaches 0 Driveways 165.7625	Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified)		Rotary restriped 2012-2013. ICD estimated from Google Maps linework.
Trois-Rivières, QC Trois-Rivieres Canada	Rue de Vitrines / Rue des Grandes-Marchés (46.31941, -72.58703)	Roundabout Existing	All-Way Yield None	3 Approaches 1 Driveways 47.0163	Other (At-Grade) Single-Lane	2015	Year Completed estimated (2014-2016). ICD estimated from Google Maps linework.
Trois-Rivières, QC Trois-Rivieres Canada	Boulevard des Athlètes / (unknown) (46.31626, -72.58552)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 32.1709	Other (At-Grade) Single-Lane	2015	Year Completed estimated (2014-2016). One leg stubbed. ICD estimated from Google Maps linework.
Trois-Rivières, QC Trois-Rivieres Canada	Boulevard des Athlètes / Boulevard Arthur-Rousseau / Autoroute 55 SB Ramps (46.31702, -72.58442)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 55.2672	Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified)	2014	https://portailconstructo.com/actualites/trois_rivieres_chantier_boulevard_arthur_rousseau_est_marche ICD estimated from Google Maps linework.
Montpelier, VT Washington Co. United States	Keck Circle (Main St. / Spring St.) (44.26283, -72.57178)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 25.6594	Other (At-Grade) Single-Lane	1995	Main Street Middle School located one block NE of roundabout. ICD estimated from Google Maps linework.
Trois-Rivières, QC Trois-Rivieres Canada	Boulevard Laviolette / Boulevard des Récollets (46.36018, -72.56988)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 80.7749	Other (At-Grade) Multilane (2 Lane, unspecified)	2005	Converted rotary. Initial conversion estimated (2003-2007). Striping refinements 2013-2016. ICD estimated from Google Maps linework.
Springfield, MA Hampden Co. United States	Walnut St. / Alden St. / Hancock St. / Ashley St. (42.10143, -72.56719)	Roundabout Existing	All-Way Yield None	6 Approaches 0 Driveways 45.7200	Other (At-Grade) Single-Lane	2020	https://www.wwlp.com/news/local-news/hampden-county/six-corners-roundabout-project-completed-more-than-a-year-later/
Longmeadow, MA Hampden Co. United States	E Greenwich Rd. / Normandy Rd. (42.06791, -72.56661)	Other Existing	Uncontrolled Unknown	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane
Killingworth, CT Middledex Co. United States	Rte. 80 / Rte. 81 (41.35801, -72.56517)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 39.6240	Other (At-Grade) Single-Lane	1997	First rotary modification in Connecticut. 21442
Brattleboro, VT Windham Co. United States	Rte 9 / Rte 5 (42.88500, -72.55670)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 51.8160	Other (At-Grade) Multilane (2 Lane, 2x2 max)	1999	Adjacent to I-89. Heavy truck volume (>7%).
South Windsor, CT Hartford Co. United States	Hemlock Ave. / Evergreen Way (41.81417, -72.55495)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 45.3975	Other (At-Grade) Single-Lane	2004	Roundabout is part of The Shops at Evergreen Walk retail center. ICD estimated from Google Maps linework.
Madison, CT New Haven Co. United States	Hammonasset Connector / Hammonasset Point / Hammonasset State Park (41.26244, -72.55477)	Rotary Existing	All-Way Yield None	4 Approaches 0 Driveways 91.4400	Other (At-Grade) Multilane (3+ Lane)	1990
Trois-Rivières, QC Trois-Rivieres Canada	Boulevard de la Commune / Rue Royale / Boulevard Gene-H-Kruger (46.33325, -72.55133)	Other Existing	All-Way Yield None	4 Approaches 0 Driveways 89.8857	Other (At-Grade) Multilane (2 Lane, unspecified)		Park in central island. ICD estimated from Google Maps linework.
Montpelier, VT Washington Co. United States	US 2 (E Montpelier Rd.) / US 302 (River St.) (44.24660, -72.54959)	Roundabout Existing	All-Way Yield Unknown	3 Approaches 2 Driveways 35.0775	Other (At-Grade) Single-Lane	2009	ICD estimated from Google Maps linework.
Amherst, MA Hampshire Co. United States	University Dr. / Fearing St. / (parking) (42.38077, -72.53192)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 27.4317	Other (At-Grade) Single-lane w/ Traversable Central Island	2020	Serves University of Massachusetts Parking Lot 21.
Amherst, MA Hampshire Co. United States	West St (Rte 116) / W Bay Rd (42.31886, -72.52762)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 45.9211	Other (At-Grade) Single-Lane	2011	Side-by-side roundabouts replacing two T-intersections ICD estimated from Google Maps linework.
Amherst, MA Hampshire Co. United States	Pleasant St / Governors Dr / Eastman Ln (42.39522, -72.52693)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 31.7529	Other (At-Grade) Single-Lane	2011	ICD estimated from Google Maps linework.
Amherst, MA Hampshire Co. United States	Bay Rd / West St (Rte 116) (42.31938, -72.52627)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 51.2193	Other (At-Grade) Single-Lane	2011	Side-by-side roundabouts replacing two T-intersections ICD estimated from Google Maps linework.
Amherst, MA Hampshire Co. United States	Rte 116 (West St.) / Pomeroy Ln. / W Pomeroy Ln. (42.34000, -72.52016)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 32.0040	Other (At-Grade) Single-Lane	2023	https://www.gazettenet.com/Amherst-road-projects-starting-Monday-50879230
Amherst, MA Hampshire Co. United States	E Pleasant St / Triangle St (42.38156, -72.51932)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 27.3487	Other (At-Grade) Single-Lane	2017	ICD estimated from Google Maps linework.
East Longmeadow, MA Hampden Co. United States	Center Square (Maple St. / Shaker Rd. / Prospect St. / Somers Rd. / Pleasant St. / Elm St. / N Main St.) (42.06482, -72.51288)	Other Existing	Other Unknown	7 Approaches 0 Driveways 31.0329	Other (At-Grade) Single-Lane		Seven way intersection. Mixture of stop signs and yield, including yields within the circle. Appeared in Ripley's Believe It or Not: https://www.thehotiron.com/index.php/site/comments/wisconsin_roundabouts_to_a_native_massachusetts_rotary_driver ICD estimated from Google Maps linework.
Ellington, CT Tolland Co. United States	Windsorville Rd. / Wappington Rd. / Skinner Rd. / Pinney St. (41.86738, -72.49265)	Roundabout Existing	All-Way Yield None	5 Approaches 1 Driveways 40.9127	Other (At-Grade) Single-Lane	2009	ICD estimated from Google Maps linework.
Drummondville, QC Drummond Regional County Municipality Canada	Rue du Pont / Rue Montplaisir / Chemin Hemming / Boulevard Saint-Charles (45.88839, -72.48190)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 27.4336	Other (At-Grade) Single-Lane	2013	https://translate.google.com/translate?hl=en&sl=fr&u=https://www.journalexpress.ca/2013/11/01/le-carrefour-giratoire-est-maintenant-ouvert/&prev=search ICD estimated from Google Maps linework.
Granby, MA Hampshire Co. United States	US 202 (E State St.) / School St. (42.26516, -72.47326)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 36.5760	Other (At-Grade) Single-Lane	2024
Barre, VT Washington Co. United States	E Barre Rd. (US 302) / Mill St. (VT 110) / Cobble Hill Rd. (44.16088, -72.44848)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 34.2718	Other (At-Grade) Single-Lane	2009	ICD estimated from Google Maps linework.
Shelter Island, NY Suffolk Co. United States	Rte 114 / Bateman Rd. / School St. (41.06829, -72.33887)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 19.8096	Other (At-Grade) Single-Lane	2010	Converted from old traffic circle. ICD estimated from Google Maps linework.
Claremont, NH Sullivan Co. United States	Main St. / Broad St. / Tremont St. / Sullivan St. (43.37272, -72.33808)	Other Existing	Other Unknown	0 Approaches 0 Driveways 32.1219	Other (At-Grade) Unknown		ICD estimated from Google Maps linework.
Coventry, CT Tolland Co. United States	Daly Rd. / South St. (41.76721, -72.33688)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 24.9424	Other (At-Grade) Single-Lane	2004	ICD estimated from Google Maps linework.
Stafford Springs, CT Tolland Co. United States	W Stafford Rd. (Rte 190) / Orcuttville Rd. (Rte 319) (41.97141, -72.33620)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane	2020
White River Junction, VT Windsor Co. United States	US 5 / Sykes Mountain Ave. / (parking) (43.64694, -72.33556)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Unknown	2021	https://www.vnews.com/Hartford-prepares-to-use-Route-5-roundabout-40112771
White River Junction, VT Windsor Co. United States	Sykes Mountain Ave. / Ralph Lehman Dr. (43.64620, -72.33411)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Unknown	2021	https://www.vnews.com/Hartford-prepares-to-use-Route-5-roundabout-40112771
Water Mill, NY Suffolk Co. United States	Scuttlehole Rd. / Mitchells Ln. (40.95021, -72.32856)	Roundabout Existing	All-Way Yield Unknown	3 Approaches 0 Driveways 26.1595	Other (At-Grade) Single-Lane	2005	Year completed estimated (2004-2006). ICD estimated from Google Maps linework.
North Haven, NY Suffolk Co. United States	Tyndall Road / Rte. 114 (Ferry Rd.) (41.01303, -72.31309)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 25.2334	Other (At-Grade) Single-Lane	2001	Replaced a dangerous 2-way stop. Previously controlled by two-way stop ICD estimated from Google Maps linework.
Keene, NH Cheshire Co. United States	Rte 9 / Base Hill Rd. (42.92477, -72.31239)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 43.7273	Other (At-Grade) Single-Lane	2016	ICD estimated from Google Maps linework.
Keene, NH Cheshire Co. United States	NH 12A (Maple Ave.) / Court St. / Old Walpole Rd. (42.96305, -72.30895)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 29.7161	Other (At-Grade) Single-Lane	2012	ICD estimated from Google Maps linework.
Stafford Springs, CT Tolland Co. United States	Rte 32 / Rte 190 (41.95362, -72.30314)	Other Existing	All-Way Yield None	4 Approaches 0 Driveways 18.6523	Other (At-Grade) Multilane (2 Lane, unspecified)	1890	Believed by some to be improperly signed and painted, though some roundabout features have been added in the past 10 years. Near railroad crossing. Year Completed estimated (1890?). ICD estimated from Google Maps linework.
Keene, NH Cheshire Co. United States	Rte. 101 / Winchester St. (42.92247, -72.29079)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 59.4713	Other (At-Grade) Multilane (2 Lane, unspecified)	2008	Functional Class: Arterial ICD estimated from Google Maps linework.
Keene, NH Cheshire Co. United States	Court St. / Allen Ct. / Cheshire Medical Center entrance (42.94991, -72.29057)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 26.2257	Other (At-Grade) Single-Lane	2003	ICD estimated from Google Maps linework.
Keene, NH Cheshire Co. United States	Winchester St. / Key Rd. / (parking) (42.92459, -72.28941)	Roundabout Existing	All-Way Yield Rectangular Rapid Flashing Beacon (RRFB)	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Multilane (2 Lane, 2x2 max)	2023	https://www.keenewinchesterstreet.com/
Keene, NH Cheshire Co. United States	Winchester St. / Pearl St. / Island St. / (parking) (42.92674, -72.28771)	Roundabout Existing	All-Way Yield None	5 Approaches 0 Driveways 0.0000	Other (At-Grade) Multilane (2 Lane, 2x1 max)	2023	Combined 3 intersections: one all-way stop, one one-way stop; one one-way yield. https://www.keenewinchesterstreet.com/
Swanzey, NH Cheshire Co. United States	Old Homestead Hwy. (NH 32) / Sawyer's Crossing Rd. (42.87428, -72.28155)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane	2020	https://www.nh.gov/dot/org/projectdevelopment/highwaydesign/roundabouts/documents/roundabout-pho-swanzey40485.pdf
Keene, NH Cheshire Co. United States	Main St. / Winchester St. / Marlboro St. (42.92849, -72.27757)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 33.2307	Other (At-Grade) Multilane (2 Lane, unspecified)	2007	Functional Class: Arterial ICD estimated from Google Maps linework.
Hanover, NH Grafton Co. United States	Lyme Rd. (NH 10) / Reservoir Rd. (43.71814, -72.27405)	Roundabout Existing	All-Way Yield Unknown	3 Approaches 0 Driveways 35.3912	Other (At-Grade) Single-Lane	2007	ICD estimated from Google Maps linework.
Hanover, NH Grafton Co. United States	NH 10 (Lyme Rd.) / (no intersecting street) (43.72763, -72.26868)	Roundabout Existing	All-Way Yield Unknown	2 Approaches 0 Driveways	Other (At-Grade) Single-Lane	2006
Salem, CT New London Co. United States	Rte 85 (Hartford Rd.-New London Rd.) / Rte 82 (E Haddam Rd.-Norwich Rd.) (41.47662, -72.26473)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 33.1084	Other (At-Grade) Multilane (2 Lane, unspecified)	2012	ICD estimated from Google Maps linework.
Swanzey, NH Cheshire Co. United States	Monadnock Hwy (Hwy 12) / Lake St. / Swanzey Factory Rd. (42.90817, -72.25933)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 37.6156	Other (At-Grade) Single-Lane	2015	ICD estimated from Google Maps linework.
Storrs, CT Tolland Co. United States	Hillside Rd. / Alumni Dr. (41.80824, -72.25809)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane	2022	On campus of University of Connecticut.
Niantic, CT New London Co. United States	(Rocky Neck State Park entrance) (41.31555, -72.24149)	Other Existing	Unknown Unknown	3 Approaches 0 Driveways 0.0000	Other (At-Grade) Unknown
Willimantic, CT Windham Co. United States	Eastern Rd. / (driveway) (ECSU Campus by clock tower) (41.72001, -72.21691)	Traffic Calming Circle Existing	All-Way Yield None	3 Approaches 0 Driveways 24.0693	Other (At-Grade) Single-Lane	1999	Not properly signed and painted, but lots of potential for demonstrating this intersection concept. ICD estimated from Google Maps linework.
Magog, QC Memphrémagog Regional County Municipality Canada	Rue Principale O (Rte 112) / Chemin du Mont Orford (Rte 141) / Rte 10 WB Onramp (45.29438, -72.20914)	Roundabout Existing	All-Way Yield Unknown	3 Approaches 0 Driveways 39.4879	Freeway Ramps (Grade-Separated) Single-Lane	2009	Year Completed estimated (2009-2010). ICD estimated from Google Maps linework.
Magog, QC Memphrémagog Regional County Municipality Canada	Rte 112 / Rte 10 EB Onramp / Chemin Milletta (45.29072, -72.20692)	Roundabout Existing	All-Way Yield Unknown	3 Approaches 0 Driveways 44.5318	Freeway Ramps (Grade-Separated) Single-Lane	2009	Year Completed estimated (2009-2010). ICD estimated from Google Maps linework.
East Hampton, NY Suffolk Co. United States	East Hampton Sag Harbor Tpke (Hwy 114) / Toilsome Ln. (40.96028, -72.20192)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 19.8421	Other (At-Grade) Single-Lane	2018	Aug 2018 Streetview shows construction almost complete. ICD estimated from Google Maps linework.
Athol, MA Worcester Co. United States	Market Rd. / Tower Rd. / Reservoir Dr. (42.58053, -72.18775)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 39.6240	Other (At-Grade) Single-Lane	2014	no crosswalks, commercial center
Newport, NH Sullivan Co. United States	Rte 10 / Rte 11 (43.36506, -72.17355)	Other Existing	Unknown Unknown	0 Approaches 0 Driveways 30.3894	Other (At-Grade) Unknown		ICD estimated from Google Maps linework.
New London, CT New London Co. United States	Lincoln Ave. / Colver St. (41.35554, -72.11288)	Other Existing	Unknown Unknown	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Unknown
New London, CT New London Co. United States	Shaw St. / Howard St. / Willets Ave. (41.34284, -72.09972)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 34.9700	Other (At-Grade) Single-Lane	2000	ICD estimated from Google Maps linework.
New London, CT New London Co. United States	Shaw St. / Pequot Ave. / Nameaug St. / Driveway to Pfizer (41.34204, -72.09873)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 35.8671	Other (At-Grade) Single-Lane	2000	Functional Class: Collector ICD estimated from Google Maps linework.
Norwich, CT New London Co. United States	Main St. / Franklin St. (41.52462, -72.07476)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane	2021	Opened September 17, 2021. https://www.theday.com/article/20210917/NWS01/210919500
New London, NH Merrimack Co. United States	Newport Rd. / County Rd. (43.42280, -72.00003)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 29.4930	Other (At-Grade) Single-Lane	2009	ICD estimated from Google Maps linework.
Sherbrooke, QC Sherbrooke Canada	Rue Henri-Labonne / Boulevard René-Lévesque (45.37523, -71.99868)	Roundabout Existing	All-Way Yield Unknown	3 Approaches 0 Driveways 27.6860	Other (At-Grade) Single-Lane	2018	https://translate.google.com/translate?hl=en&sl=fr&u=https://www.ville.sherbrooke.qc.ca/salle-de-presse/actualites/dossiers-municipaux/construction-du-boulevard-rene-levesque/ shows 2 other roundabouts on Boulevard René-Lévesque. ICD estimated from Google Maps linework.
Sherbrooke, QC Sherbrooke Canada	Boulevard René-Lévesque / Rue Matisse / Rue Luce-Dufresne (45.38324, -71.99812)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways	Other (At-Grade) Single-Lane	2018
Sherbrooke, QC Sherbrooke Canada	Boulevard René-Lévesque / Rue Sainte Claire / Rue Magnelli (45.38799, -71.99469)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways	Other (At-Grade) Single-Lane	2018
Gardner, MA Worcester Co. United States	Timpany Blvd (Rte 68) / Rte 2 (42.56665, -71.99296)	Rotary Existing	All-Way Yield None	4 Approaches 0 Driveways 140.7379	Freeway Ramps (Grade-Separated) Single-Lane		Crosswalks present ICD estimated from Google Maps linework.
Sherbrooke, QC Sherbrooke Canada	Boulevard Industriel / Boulevard de Portland / Boulevard René-Lévesque (45.39569, -71.98464)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 54.5133	Other (At-Grade) Multilane (2 Lane, unspecified)	2016	Grade-separated path for pedestrians and bicyclists: https://translate.google.com/translate?hl=en&sl=fr&u=https://www.ville.sherbrooke.qc.ca/salle-de-presse/actualites/dossiers-municipaux/prolongement-du-boulevard-de-portland/ Connected to Boulevard René-Lévesque in 2018: https://translate.google.com/translate?hl=en&sl=fr&u=https://www.ville.sherbrooke.qc.ca/salle-de-presse/actualites/dossiers-municipaux/construction-du-boulevard-rene-levesque ICD estimated from Google Maps linework.
Gardner, MA Worcester Co. United States	Rte 2 Ramps / Pearson Blvd (42.56420, -71.97920)	Rotary Existing	All-Way Yield None	4 Approaches 0 Driveways 137.2249	Freeway Ramps (Grade-Separated) Single-Lane		ICD estimated from Google Maps linework.