Roundabouts Database Index

29504 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
Bay Shore, NY Suffolk Co. United States	Robert Moses State Parkway / Robert Moses Causeway (40.62361, -73.26164)	Rotary Existing	Unknown Unknown	3 Approaches 0 Driveways 0.0000	Other (At-Grade) Multilane (2 Lane, unspecified)
Berthierville, QC D'Autray Canada	Rang de la Rivière-Bayonne S / Chemin Robillard (46.08970, -73.24991)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 41.4152	Other (At-Grade) Single-Lane	2013	Year Completed estimated (2012-2014). ICD estimated from Google Maps linework.
Trumbull, CT Fairfield Co. United States	Park Ave. / Rte. 15 (Merritt Pkwy) WB Ramps (41.22857, -73.24581)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 28.7436	Freeway Ramps (Grade-Separated) Single-Lane	2015	Constructed by private developer. ICD estimated from Google Maps linework.
Morningside, MA Berkshire Co. United States	Tyler St. / Woodlawn Ave. / Dalton Ave. (42.45643, -73.23392)	Roundabout Existing	Unknown Unknown	5 Approaches 0 Driveways 0.0000	Other (At-Grade) Unknown	2021	Year Completed estimated (2018-2022).
St-Jean-Sur-Richelieu, QC Le Haut-Richelieu Regional County Municipality Canada	Rte 133 / Rue Lefort (45.29173, -73.22821)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 43.6908	Other (At-Grade) Single-Lane	2014	ICD estimated from Google Maps linework.
Contrecoeur, QC Marguerite-D'Youville Regional County Municipality Canada	Rue Saint-Antoine / Rue des Patriotes (45.85305, -73.22770)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 43.2563	Other (At-Grade) Single-Lane	2010	Year Completed estimated (2009-2011). ICD estimated from Google Maps linework.
Goshen, CT Litchfield Co. United States	Rte. 4 / Rte. 63 (41.83185, -73.22539)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 25.9080	Other (At-Grade) Single-Lane	2002	Painted splitter islands.
Smithtown, NY Suffolk Co. United States	Redan Dr. / Raynors Way (40.82879, -73.21520)	Other Unknown	Unknown Unknown	3 Approaches 0 Driveways 0.0000	Other (At-Grade) Unknown
Beloeil, QC La Vallée-du-Richelieu Regional County Municipality Canada	Boulevard Yvon-l'Heureux N / Rue Saint-Jean-Baptiste (45.58079, -73.21466)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 40.1239	Other (At-Grade) Single-Lane	2008	Year Completed estimated (2005-2009). ICD estimated from Google Maps linework.
Williamstown, MA Berkshire Co. United States	Main St (Rte 2) / North St (US 7) / Cold Spring Rd (US7 / Rte 2) / South St (42.71367, -73.21032)	Other Existing	All-Way Yield None	5 Approaches 3 Driveways 21.9384	Other (At-Grade) Single-Lane		Historic elliptical town common ICD estimated from Google Maps linework.
Bennington, VT Bennington Co. United States	Rte 7A / Willma St. (42.89936, -73.20987)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane	2016	https://www.benningtonbanner.com/archives/northside-drive-roundabout-open-to-traffic/article_28eed74c-dc7f-5ce0-a331-ef606872868c.html
St-Jean-Sur-Richelieu, QC Le Haut-Richelieu Regional County Municipality Canada	Chemin de la Grande Ligne / 3e Rang S (45.28342, -73.20959)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 47.8988	Other (At-Grade) Single-Lane	2014	Roundabout is about 100 feet north of previous intersection. date: https://translate.google.com/translate?hl=en&sl=fr&u=http://www.portailconstructo.com/actualites/grands_chantiers/autoroute_vallee_des_forts_35 ICD estimated from Google Maps linework.
Monroe, CT Fairfield Co. United States	Monroe Turnpike / Shelton Rd. (41.32843, -73.20839)	Roundabout Existing	All-Way Yield Unknown	3 Approaches 0 Driveways 36.7715	Other (At-Grade) Single-Lane	2018	ICD estimated from Google Maps linework.
Burlington, VT Chittenden Co. United States	US 7 (Shelburne St.-Willard St.) / Shelbourne St. / Locust St. (44.46348, -73.20781)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane	2022	https://www.wcax.com/2022/11/17/burlington-city-leaders-celebrate-early-completion-roundabout/
Beloeil, QC La Vallée-du-Richelieu Regional County Municipality Canada	Avenue Armand-Lamoureux / Avenue Carmen-Bienvenu / Rue Rémi-Dansereau / Rue Adrian-Provencher (45.58948, -73.20364)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 41.7892	Other (At-Grade) Single-Lane	2010	ICD estimated from Google Maps linework.
Beloeil, QC La Vallée-du-Richelieu Regional County Municipality Canada	Rue de l'Industrie / (parking) (45.59599, -73.19469)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 45.0000	Other (At-Grade) Single-Lane	2021	Year Completed estimated (2020-2021).
Bridgeport, CT Fairfield Co. United States	Soundview Dr. / Monument Dr. (41.16021, -73.18696)	Other Existing	Unknown Unknown	3 Approaches 0 Driveways 0.0000	Other (At-Grade) Unknown
Winooski, VT Chittenden Co. United States	Main St. / W Center St. / E Allen St. / Winooski Falls Way (44.49068, -73.18606)	Other Existing	All-Way Yield Unknown	5 Approaches 0 Driveways 0.0000	Other (At-Grade) Multilane (2 Lane, unspecified)	2005	Oval shape. Pedestrian access to center island. https://www.burlingtonfreepress.com/story/life/2017/02/27/experts-debate-merits-winooski-traffic-circle/98062264/
Middlebury, VT Addison Co. United States	Main St. / Cross St. (44.01210, -73.16957)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 24.9096	Other (At-Grade) Single-Lane	2010	Year Completed estimated (2009-2011). ICD estimated from Google Maps linework.
Great River, NY Suffolk Co. United States	Heckscher State Pkwy. / Heckscher State Pkwy. (40.71337, -73.16494)	Rotary Existing	Other Unknown	3 Approaches 0 Driveways 198.1200	Other (At-Grade) Multilane (2 Lane, unspecified)		Stop control on circulatory roadway.
Middlebury, VT Addison Co. United States	Lacrosse Dr. / S Village Green / Cottage Ln. (44.00243, -73.15888)	Other Existing	Uncontrolled Unknown	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane
San Pedro de la Paz, Bio-Bio Concepción Province Chile	Avenida Costanera Mar / Calle Irene Morales (-36.83885, -73.15029)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways	Other (At-Grade) Multilane (2 Lane, unspecified)
Seymour, CT New Haven Co. United States	Rte. 188 / Rte. 334 (Great Hill Rd.) / Holbrook Rd. (41.37857, -73.12669)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 35.8466	Other (At-Grade) Single-Lane	2016	Previous traffic circle was upgraded to modern roundabout design guidelines. 21442
Stony Brook, NY Suffolk Co. United States	S. Loop Rd. / Marburger Dr. (40.90982, -73.12318)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 36.1041	Other (At-Grade) Single-Lane	2006	On college campus roadway. ICD estimated from Google Maps linework.
Adams, MA Berkshire Co. United States	Columbia St. (Rte 8) / Renfrew St. / Friend St. (42.63704, -73.11300)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 30.7517	Other (At-Grade) Single-Lane	2016	ICD estimated from Google Maps linework.
Williston, VT Chittenden Co. United States	Maple Tree Pl. / Sycamore Dr. (44.44349, -73.10966)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 22.1697	Other (At-Grade) Single-Lane	2001	Completed November 2001. Major shopping area, road part of the planned ring road around Taft Corner. Functional Class: Local ICD estimated from Google Maps linework.
Hualpén, Bio-Bio Concepción Province Chile	Carretera Nueva Cost / Avenida Gran Bretana (-36.80235, -73.10538)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways	Other (At-Grade) Multilane (2 Lane, unspecified)		Concentric circulatory roadway striping.
St Albans, VT Franklin Co. United States	Industrial Park Rd. / Benoit Dr. (44.80056, -73.09987)	Other Existing	All-Way Yield None	4 Approaches 1 Driveways 86.4401	Other (At-Grade) Single-Lane		ICD estimated from Google Maps linework.
Saint-Armand, QC Brome-Missisquoi Regional County Municipality Canada	Rte 133 / Chemin Champlain / Chemin du Moulin (45.06420, -73.06729)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways	Other (At-Grade) Single-Lane	2023	https://www-mrcbm-qc-ca.translate.goog/actualites/nouvelle-configuration-du-carrefour-giratoire-a-saint-armand-a-proximite-de-la-future-autoroute-35?_x_tr_sl=fr&_x_tr_tl=en&_x_tr_hl=en&_x_tr_pto=sc
Manchester, VT Bennington Co. United States	Rte. 7A / Equinox (Grand Union) (43.17309, -73.06181)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 26.1304	Other (At-Grade) Single-Lane	1997	Roundabout is in a retail/outlet district in a resort area. VT 7-A is posted as a Historic Highway and is the local business route, while the parallel US 7 is a two-lane, limited access bypass that carries through truck traffic. Previously controlled by two-way stop Functional Class: Collector ICD estimated from Google Maps linework.
Concepción, Bio-Bio Concepción Province Chile	Rotonda Aeropuerto Carriel Sur [Avenida Jorge Alessandri Rodriguez / Avenida Jorge Alessandri / Camino al Aeropuerto Carriel Sur] (-36.77989, -73.05833)	Rotary Existing	All-Way Yield None	3 Approaches 0 Driveways	Other (At-Grade) Multilane (3+ Lane)		Concentric circulatory roadway striping.
Manchester, VT Bennington Co. United States	Main St. / Depot St. (43.17641, -73.05745)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 29.6128	Other (At-Grade) Single-Lane	2013	ICD estimated from Google Maps linework.
Manchester, VT Bennington Co. United States	Main St. / Bonnet St. (43.17692, -73.05688)	Roundabout Existing	All-Way Yield Unknown	3 Approaches 0 Driveways 17.4191	Other (At-Grade) Single-lane w/ Traversable Central Island	2013	ICD estimated from Google Maps linework.
Concepción, Bio-Bio Concepción Province Chile	Calle Ramón Carrasco / Calle Nueva Dos / Calle C (-36.78087, -73.05193)	Roundabout Existing	All-Way Yield None	3 Approaches 1 Driveways	Other (At-Grade) Single-Lane
Concepción, Bio-Bio Concepción Province Chile	Rotonda Paicavi [Avenida Los Carrera / Avenida Paicavi] (-36.82008, -73.04424)	Signalized Roundabout/Circle Existing	Signal None	4 Approaches 0 Driveways	Other (At-Grade) Multilane (3+ Lane)		Hamburger shaped.
Concepción, Bio-Bio Concepción Province Chile	Avenida Los Lleuques / Calle Rio Calle Calle / Avenida Siete Lagunas (-36.78509, -73.04292)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways	Other (At-Grade) Single-Lane
Patchogue, NY Suffolk Co. United States	Waverly Ave. / Holbrook Rd. (40.76705, -73.02555)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 27.1365	Other (At-Grade) Single-Lane	2010	ICD estimated from Google Maps linework.
Patchogue, NY Suffolk Co. United States	Holbrook Rd. / Lake St. (40.76695, -73.01946)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 33.5280	Other (At-Grade) Single-Lane	2020	Replaces triangle-shaped intersection with stop and yield control. https://www.suffolkcountynews.net/stories/lake-street-west-avenue-traffic-circle-to-open,86421
West Haven, CT New Haven Co. United States	Rte 162 (Jones Hill Rd.) / SR 705 (Ocean Avenue) (41.23624, -72.98605)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 27.8421	Other (At-Grade) Single-Lane	2007	Opened fall 2007. Connecticut DOT project. Previously controlled by one-way stop ICD estimated from Google Maps linework.
St-Hyacinthe, QC Les Maskoutains Regional County Municipality Canada	Ave des Golfeurs / Rue du Tertre (45.59838, -72.96669)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 32.0000	Other (At-Grade) Single-Lane	2005	Year Completed estimated (2002-2009). Originally 3 approaches; 4th added 2011-2015 (streetview).
Farnham, QC Brome-Missisquoi Regional County Municipality Canada	Rte 235 / Rte de Contournement (Farnham Bypass) / Boulevard Industriel (45.29856, -72.96165)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 47.0459	Other (At-Grade) Single-Lane	2014	https://translate.google.com/translate?hl=en&sl=fr&u=https://www.laveniretdesrivieres.com/2017/01/17/intersection-104-et-235-farnham-lance-lidee-dun-carrefour-giratoire ICD estimated from Google Maps linework.
New Haven, CT New Haven Co. United States	Chapel St. / Yale Ave. (41.31448, -72.95891)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane	2023	Peanut shaped. Replaces skewed intersection. https://www.fox61.com/video/news/local/new-haven-county/new-haven/first-of-its-kind-peanut-shaped-roundabout-opens-in-new-haven/520-3db77500-495f-4ae7-a441-ed85863cd327
Middle Island, NY Suffolk Co. United States	Miller Place Yaphank Rd. / Whiskey Rd. (40.90476, -72.95687)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 42.4256	Other (At-Grade) Single-Lane	2012	ICD estimated from Google Maps linework.
New Haven, CT New Haven Co. United States	Crescent St. / Munson St. / Winthrop Ave. (41.32357, -72.94056)	Roundabout Existing	All-Way Yield None	4 Approaches 2 Driveways 35.0520	Other (At-Grade) Single-Lane	2020	Two-way cycle track along eastern side of Crescent St.
Worthington, MA Hampshire Co. United States	Huntington Rd. / Buffington Hills Rd. / Old North Rd. / Williamsburg Rd. (42.41024, -72.93700)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-lane w/ Traversable Central Island	2020	https://www.gazettenet.com/Worthington-Roundabout-38263037
New Haven, CT New Haven Co. United States	Sea St. / Harbour Close (41.28259, -72.93206)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 41.1480	Other (At-Grade) Single-Lane	2019
Puerto Montt, Los Lagos Llanquihue Province Chile	Rotonda Pichi Pelluco [Avenida Maratón / Calle Río / Lago Vidal Gormaz] (-41.47401, -72.91740)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways	Other (At-Grade) Unknown
Ridge, NY Suffolk Co. United States	Princeton Ave. / York Ln. (40.86451, -72.89717)	Roundabout Existing	All-Way Yield Unknown	3 Approaches 0 Driveways 62.4840	Other (At-Grade) Multilane (2 Lane, unspecified)	2019	Year Completed estimated (2019-2020).
New Haven, CT New Haven Co. United States	Quinnipiac Ave. / Ferry St. (41.30011, -72.89024)	Roundabout Existing	All-Way Yield None	3 Approaches 1 Driveways 21.3357	Other (At-Grade) Single-lane w/ Traversable Central Island	2011
Yamachiche, QC Maskinongé Canada	Boulevard Saint Laurent E / Route Ste-Anne O / Route du Pays Brûlé (46.26235, -72.87783)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 42.1111	Other (At-Grade) Single-Lane	2000	Year Completed estimated (before 2005). ICD estimated from Google Maps linework.
Shirley, NY Suffolk Co. United States	Lockwood Dr. / (unknown) (40.82729, -72.87614)	Roundabout Existing	All-Way Yield Unknown	3 Approaches 0 Driveways 29.8231	Other (At-Grade) Single-Lane	2008	ICD estimated from Google Maps linework.
New Haven, CT New Haven Co. United States	Weybosset St. / Cranston St. (41.33172, -72.87223)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 20.4216	Other (At-Grade) Single-lane w/ Traversable Central Island	2018	Painted splitter islands.
Shirley, NY Suffolk Co. United States	Fire Island Beach Rd. / William Floyd Pkwy. (40.73340, -72.86561)	Rotary Existing	Uncontrolled Unknown	3 Approaches 0 Driveways 0.0000	Other (At-Grade) Multilane (2 Lane, unspecified)
Jeffersonville, VT Lamoille Co. United States	VT 108 / VT 15 (44.64775, -72.82956)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 19.5430	Other (At-Grade) Single-Lane	2014	Completion year estimated. ICD estimated from Google Maps linework.
Granby, CT Hartford Co. United States	US 202 (Salmon Brook St.) / Notch Rd. / East St. (41.99540, -72.79684)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane	2020	https://granbydrummer.com/2020/08/roundabout-nearing-completion/
Farmington, CT Capitol United States	Main Rd. (UConn Health Blvd.) / Dowling Way / Discovery Dr. (41.73355, -72.79357)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 36.5760	Other (At-Grade) Single-Lane	2014	Year Completed estimated (2013-2014).
Farmington, CT Capitol United States	Dowling Way / (parking) (41.73355, -72.79165)	Other Existing	One-Way/Two-Way Stop None	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-lane w/ Traversable Central Island		Pedestrian crossing within circulatory roadway.
Farmington, CT Capitol United States	Two MIle Rd. / South Rd. / Colt Hwy. (41.72232, -72.78876)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 39.6240	Other (At-Grade) Single-Lane	2023	Right-turn-only lane on north leg aligned with circulatory roadway.
New Britain, CT Hartford Co. United States	Columbus Blvd. / Bank St. (41.66804, -72.77988)	Roundabout Existing	All-Way Yield Unknown	3 Approaches 0 Driveways 33.9026	Other (At-Grade) Single-Lane	2018	Previous control: Yield sign ICD estimated from Google Maps linework.
Waterbury, VT Washington Co. United States	US 2 / VT 100 (44.34144, -72.75923)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 40.1459	Other (At-Grade) Single-Lane	2014	Completion year estimated. ICD estimated from Google Maps linework.
Shawinigan, QC Mauricie Region Canada	Rte 153 / Rte 157 / Avenue de la Station (46.54343, -72.75185)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 45.7200	Other (At-Grade) Single-Lane	2003	Opened December 2003. No splitter island on east leg.
Westfield, MA Hampden Co. United States	Parker Ave. / Pochassic St. / Montgomery St. (42.13113, -72.74647)	Roundabout Existing	All-Way Yield None	4 Approaches 1 Driveways 30.4800	Other (At-Grade) Single-Lane	2008	stop-controlled traffic circle retrofit, near bridge
Guilford, CT New Haven Co. United States	US 1 (Boston Post Rd.) / Rte 22 (Notch Hill Rd.) (41.31131, -72.74547)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane	2021	At the town lines of Branford, North Branford and Guilford. https://www.zip06.com/news/20210617/new-route-1route-22-roundabout-taking-shape.
Eastport, NY Suffolk Co. United States	Hamptons Court Dr W / Hamptons Court Dr. E (40.84068, -72.73421)	Other Existing	Unknown Unknown	3 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane		No splitter islands.
Granby, QC La Haute-Yamaska Regional County Municipality Canada	Rue Bruce / Boulevard Pierre-Laporte (45.37287, -72.70142)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 40.2722	Other (At-Grade) Single-Lane	2010	ICD estimated from Google Maps linework.
Windsor, CT Hartford Co. United States	Prospect Hill Rd. / Lang Rd. (41.89153, -72.69762)	Roundabout Existing	All-Way Yield None	3 Approaches 1 Driveways 25.7830	Other (At-Grade) Single-Lane	1998	Located at entrance to industrial park. Year Completed estimated (1992-2004). ICD estimated from Google Maps linework.
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.