Roundabouts Database Index

29411 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
Saguenay, QC Le Saguenay-et-son-Fjord Canada	Rue Marc-Aurèle / Rue Mousseau (48.42666, -71.26253)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 36.0000	Other (At-Grade) Single-Lane		Year Completed unknown (before 2005).
West End, MA Middlesex Co. United States	US 20 / I-95 Ramps (42.37131, -71.26901)	Rotary Existing	Uncontrolled Unknown	4 Approaches 0 Driveways 43.2357	Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified)		ICD estimated from Google Maps linework.
Wellesley, MA Norfolk Co. United States	Wellesley Ave. / Great Plain Ave. / Seaver St. (42.29865, -71.27926)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 54.8637	Other (At-Grade) Single-Lane	2021	The previous traffic circle had two stopped-controlled approaches and two uncontrolled approaches
Quebec, QC Quebec Canada	Rue de Mesnil / Rue du Massif / Rue de l'Islet (46.83737, -71.29275)	Other Existing	All-Way Stop Unknown	4 Approaches 0 Driveways 31.8632	Other (At-Grade) Single-Lane		ICD estimated from Google Maps linework.
Centralville, MA Middlesex Co. United States	Hunts Falls Bridge / VFW Hwy Ramps (42.64822, -71.29907)	Rotary Existing	All-Way Yield Unknown	3 Approaches 0 Driveways 108.9292	Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified)		Rotary interchange. ICD estimated from Google Maps linework.
Quebec, QC Quebec Canada	Rue Claire Bonenfant / Rue des Aïeux / Rue Marie-De Lamarre (46.84426, -71.31036)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 17.9718	Other (At-Grade) Single-Lane	2012	ICD estimated from Google Maps linework.
Quebec, QC Capitale-Nationale Region Canada	Boulevard de la Morille / Boulevard Robert Bourassa (46.83900, -71.31117)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 36.7642	Other (At-Grade) Single-Lane	2007	ICD estimated from Google Maps linework.
Derry, NH Rockingham Co. United States	Rte 28 (N Main St.-Londonderry Turnpike) / E Broadway / Chester Rd. / E Derry Rd. (42.89225, -71.31208)	Other Existing	All-Way Yield Unknown	5 Approaches 0 Driveways 33.2503	Other (At-Grade) Single-Lane		Pedestrian access to central island. No splitter islands. ICD estimated from Google Maps linework.
The Acre, MA Middlesex Co. United States	Arcand Dr. / Hall St. / Martin Luther King Jr Way (42.64922, -71.31315)	Other Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 62.3697	Other (At-Grade) Single-Lane		No splitter islands on two legs. Very wide circulatory roadway. ICD estimated from Google Maps linework.
Quebec, QC Quebec Canada	Rue de la Rive-Boisée S / Rue des Arbisseaux (46.83003, -71.31673)	Other Existing	Unknown Unknown	3 Approaches 0 Driveways 34.3189	Unknown Single-Lane		ICD estimated from Google Maps linework.
Newport, RI Newport Co. United States	J. T. Connell Hwy. / Admiral Kalbfus Rd. (41.50703, -71.31757)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Multilane (2 Lane, unspecified)	2022	Conversion from rotary to roundabout. https://www.newportthisweek.com/articles/rotary-morphing-into-a-roundabout/
Quebec, QC Quebec Canada	Boulevard Lebourgneuf / Rue de Celles / Boulevard St Jacques (46.82286, -71.31871)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 42.4958	Other (At-Grade) Multilane (2 Lane, unspecified)	2010	Combined two signalized intersections. Bus-only lane in circulatory roadway. ICD estimated from Google Maps linework.
Lowell, MA Middlesex Co. United States	Industrial Ave / American Legion Connector Hwy SB Ramps (42.61379, -71.32136)	Rotary Existing	All-Way Yield None	5 Approaches 0 Driveways 75.5895	Freeway Ramps (Grade-Separated) Unknown		Longtime rotary near Lowell Connector. ICD estimated from Google Maps linework.
Pelham, NH Hillsborough Co. United States	NH 111A / Nashua Rd. (42.73399, -71.32318)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 42.1079	Other (At-Grade) Single-Lane	2014	ICD estimated from Google Maps linework.
Quebec, QC Quebec Canada	Rue des Bienfaits / Rue du Chevalet / Rue Coursol (46.84132, -71.32403)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 46.5659	Other (At-Grade) Single-Lane	2011	Year Completed estimated (2010-2012). ICD estimated from Google Maps linework.
Pelham, NH Hillsborough Co. United States	NH 111A (Marsh Rd.) / Acorn Ln. / Village Green (42.73178, -71.32437)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 58.7778	Other (At-Grade) Single-Lane	2014	ICD estimated from Google Maps linework.
Norfolk, MA Norfolk Co. United States	Union St. / North St. / Liberty Ln. (42.11823, -71.32501)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 24.8054	Other (At-Grade) Single-Lane	2006	Year Completed estimated (2005-2006). ICD estimated from Google Maps linework.
Norfolk, MA Norfolk Co. United States	Main St. / Rockwood Rd. / Union St. (42.11966, -71.32520)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 24.8049	Other (At-Grade) Single-Lane	2004	Pedestrian crossings at yield lines. At-grade railroad crossing to the north. Year Completed estimated (2003-2005). ICD estimated from Google Maps linework.
Quebec, QC Quebec Canada	Rue de Buffalo (46.83844, -71.32595)	Other Existing	Unknown Unknown	2 Approaches 0 Driveways 31.8626	Other (At-Grade) Single-Lane		ICD estimated from Google Maps linework.
Quebec, QC Capitale-Nationale Region Canada	Rue de la Rive-Boisee N / Rue du Baumier (46.83577, -71.32956)	Other Existing	All-Way Yield None	3 Approaches 0 Driveways 40.0000	Other (At-Grade) Single-Lane		No splitter islands. ICD estimated from Google Maps linework.
Québec, QC Capitale-Nationale Canada	Rue George-Muir / Rue de l'Apogée (46.88706, -71.32983)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways	Other (At-Grade) Single-Lane	2020	https://www.quebechebdo.com/local/journal-charlesbourg-express/234535/nouveau-carrefour-giratoire-rue-george-muir/
Quebec, QC Quebec Canada	Rue de Bergen / Rue de la Boussole (46.83905, -71.33156)	Other Existing	Unknown Unknown	3 Approaches 0 Driveways 32.6792	Other (At-Grade) Single-Lane		ICD estimated from Google Maps linework.
Carlisle, MA Middlesex Co. United States	Westford St. / Lowell St. / Bedford Rd. (42.52918, -71.34894)	Roundabout Existing	All-Way Yield None	3 Approaches 2 Driveways 28.9560	Other (At-Grade) Single-Lane	2020	The previous traffic circle was reconstructed with modern roundabout features in 2020.
Londonderry, NH Rockingham Co. United States	Michels Way / Main St. (42.87228, -71.35008)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 30.4800	Other (At-Grade) Single-Lane	2018	Year Completed estimated (2018-2019).
Londonderry, NH Rockingham Co. United States	Michels Way / First Ave. (42.87405, -71.35055)	Roundabout Existing	All-Way Yield Unknown	3 Approaches 0 Driveways 28.9560	Other (At-Grade) Single-Lane	2018	Year Completed estimated (2017-2018).
Epsom, NH Merrimack Co. United States	US 4-US 202 (Dover Rd.) / Rte 28 (Suncock Valley Hwy.) (43.22784, -71.36053)	Rotary Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 91.4400	Other (At-Grade) Single-Lane	1940	Elliptical shaped. ICD = 300 ft x 260 ft.
L'ancienne-Lorette, QC Quebec Canada	Rue des Loisirs E / Rue Beauséjour / Rue de la Hutte (46.80861, -71.36322)	Roundabout Existing	Unknown None	4 Approaches 0 Driveways 37.6024	Other (At-Grade) Single-Lane	2011	Year Completed estimated (2010-2012). ICD estimated from Google Maps linework.
East Providence, RI Providence Co. United States	Henderson Expwy. / Massasoit Ave. (41.82850, -71.37217)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 50.2920	Other (At-Grade) Multilane (2 Lane, 2x2 max)	2024	https://turnto10.com/news/local/gallery/new-henderson-bridge-east-side-providence-massasoit-avenue-driver-confusion-bike-lane-pedestrian-path-rhode-island-department-of-transportation?photo=2
Natick, MA Middlesex Co. United States	Natick Mall Rd. / (parking lots) (42.30191, -71.38212)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 24.7334	Other (At-Grade) Single-Lane	2018	Year Completed estimated (2018-2019). ICD estimated from Google Maps linework.
Natick, MA Middlesex Co. United States	Natick Mall Rd. / Nouvelle Way / (parking lots/garage) (42.30232, -71.38495)	Roundabout Existing	All-Way Yield None	5 Approaches 0 Driveways 35.3330	Other (At-Grade) Multilane (2 Lane, unspecified)	2007	Fifth leg added 2017-2018. ICD estimated from Google Maps linework. 21442
Framingham, MA Middlesex Co. United States	Natick Mall Rd. / Flutie Pass (42.30175, -71.38765)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 29.1502	Other (At-Grade) Single-Lane	2007	Right-turn-only lanes on north and west legs. Year Completed estimated (2006-2007). ICD estimated from Google Maps linework.
Saint-Augustin-de-Desmaures, QC Quebec Canada	Rue de l'Hétrière / Rue Lionel-Groulx (46.74435, -71.39031)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 25.3710	Other (At-Grade) Single-Lane	2011	Year Completed estimated (20120-2012). ICD estimated from Google Maps linework.
Manchester, NH Hillsborough Co. United States	Londonderry Turnpike / Candia Rd. / Manchester Rd. (43.00400, -71.39258)	Rotary Existing	All-Way Yield None	4 Approaches 0 Driveways 76.2000	Other (At-Grade) Single-Lane	1940	Pedestrian access to central island.
Concord, MA Middlesex Co. United States	Rte 2 (Union Tpke-Concord Tpke) / Rte 2A / Barretts Mill Rd. / Commonwealth Ave. (42.46728, -71.39721)	Rotary Existing	All-Way Yield None	5 Approaches 0 Driveways 100.4354	Other (At-Grade) Multilane (2 Lane, unspecified)		Infamous Concord rotary. ICD estimated from Google Maps linework.
Cumberland, RI Providence Co. United States	Diamond Hill Rd. (Rte 114) / I-295 SB Ramps (41.95149, -71.40241)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 0.0000	Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified)	2019	https://www.ri.gov/press/view/36693
Cumberland, RI Providence Co. United States	Diamond Hill Rd. (Rte 114) / I-295 NB Ramps (41.94962, -71.40285)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 0.0000	Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified)	2019	https://www.ri.gov/press/view/36693
Westford, MA Middlesex Co. United States	Russells Way (42.64453, -71.42699)	Other Existing	Unknown Unknown	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Unknown
Framingham, MA Middlesex Co. United States	Union Ave / Main St / Maple St (42.29709, -71.43089)	Other Existing	One-Way/Two-Way Stop None	4 Approaches 2 Driveways 51.2374	Other (At-Grade) Single-Lane		Wide circular roadway (2 lane) All approaches 1 lane Geometry unconventional; decreases overview (oval circular road, with minor approaches under an angle) Residential context repaved surface in 2016; new pavement markings consisting of three high vis crosswalks 1 South and 2 North on the major road. No further improvements to pavement markings now or in the last 10 years. Speed limit 25 mph ICD estimated from Google Maps linework.
Westford, MA Middlesex Co. United States	Russells Way (42.63407, -71.43101)	Other Existing	Unknown Unknown	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Unknown
Ashland, MA Middlesex Co. United States	Pond St. / Spyglass Hill Dr. / (parking) (42.24026, -71.43205)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 39.6240	Other (At-Grade) Single-Lane	2022	Utility pole within central island on inner edge of truck apron.
Londonderry, NH Rockingham Co. United States	Raymond Wieczorek Dr. / Commerce Ave. / Sparks Ave. (42.92134, -71.44384)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 52.4756	Other (At-Grade) Multilane (2 Lane, unspecified)	2011	At Manchester-Boston Regional Airport. ICD estimated from Google Maps linework.
Londonderry, NH Rockingham Co. United States	Raymond Wieczorek Dr. / Airport Rd. (42.92660, -71.44580)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 62.9654	Other (At-Grade) Multilane (2 Lane, unspecified)	2011	At Manchester-Boston Regional Airport. ICD estimated from Google Maps linework.
North Kingstown, RI Washington Co. United States	Davisville Rd. / Gate Rd. / Romano Vineyard Way / RI-403 Ramps (41.60535, -71.44658)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 52.6895	Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified)	2009	ICD estimated from Google Maps linework.
Lincoln, RI Providence Co. United States	Twin River Rd. / (unknown) (41.89224, -71.45074)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 47.1202	Other (At-Grade) Multilane (2 Lane, unspecified)	2006	ICD estimated from Google Maps linework.
Lincoln, RI Providence Co. United States	(college entrance roadway) / (parking) (41.89960, -71.45290)	Other Existing	Unknown Unknown	3 Approaches 0 Driveways 0.0000	Other (At-Grade) Unknown		Community College of Rhode Island Flanagan Campus.
Warwick, RI Kent Co. United States	Post Rd. / W. Shore Rd. (41.69980, -71.45348)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 35.6694	Other (At-Grade) Multilane (2 Lane, unspecified)	2016	New tear-drop roundabout. Only one approach (eb) has to yield. the WB approach is a free merge. Post Road (on west side of roundabout) is EB only. Fully operational - opened in fall 2016. Post Rod (SB) was previously 4 lanes NB only, now 2 lanes in each direction. ICD estimated from Google Maps linework.
Lincoln, RI Providence Co. United States	School St. / Main St. / Briarwood Rd. (41.95141, -71.45445)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 44.4118	Other (At-Grade) Single-lane w/ Traversable Central Island	2017	Previous control: beacon (4-way flasher in center of intersection) which was damaged in 2015 and restored in center island. ICD estimated from Google Maps linework.
Laconia, NH Belknap Co. United States	US 3 / NH 11B (43.60333, -71.45460)	Roundabout Existing	All-Way Yield Unknown	3 Approaches 1 Driveways 35.4589	Other (At-Grade) Single-Lane	2012	ICD estimated from Google Maps linework.
Warwick, RI Kent Co. United States	Veteran's Memorial Dr. / Post Rd. / Post Rd. Extension (41.70266, -71.45475)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 59.7435	Other (At-Grade) Multilane (2 Lane, unspecified)	2016	New roundabout fully operational and opened in fall 2016. Note that traffic was previously NB only on Post Rd south of the roundbaout, and WB only on VMD, but traffic is now bi-directional in all directions. ICD estimated from Google Maps linework.
Nashua, NH Hillsborough Co. United States	Main St. / Daniel Webster Hwy (42.73881, -71.45826)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 32.4557	Other (At-Grade) Single-Lane	2003	Located near Rivier College, 1/4 mile north of Exit 3 of the Everett Turnpike. ICD estimated from Google Maps linework.
Warwick, RI Kent Co. United States	Post Rd. / Centerville Rd. / Greenwich Ave. (41.69875, -71.46003)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 30.3195	Unknown Single-Lane	2017	NOT YET CONSTRUCTED - Coming in spring 2017. Construction work has started at this location, currently in winter (2016-2017) shutdown. Note new configuration as Centerville Road on the west side has been cuttoff - can no longer access Toll Gate Road from here. Mapping not yet updated. ICD estimated from Google Maps linework.
Warwick, RI Kent Co. United States	Greenwich Ave. / Centerville Rd. / Veterans Memorial Dr. (41.70038, -71.46021)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 108.7906	Other (At-Grade) Multilane (2 Lane, unspecified)	2016	Roundabout fully operational in Fall 2016. Minor landscaping work and minor curb work required to fully complete construction. New roadway - Veteran's Memorial Drive Extension not shown on mapping. This new road connects to the new roundabout at Toll Gate Road to the west. ICD estimated from Google Maps linework.
Warwick, RI Kent Co. United States	Toll Gate Rd. (Rte 115) / Centerville Rd. (Rte 117) / Veteran's Memorial Drive Extension (41.69815, -71.46408)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 49.9384	Other (At-Grade) Multilane (2 Lane, unspecified)	2016	Roundabout is fully operational as of fall 2016 but still has landscape work and other minor work to be completed. There is a NEW roadway not shown on the aerial mapping - it is the Veteran's Memorial Drive Extension. ICD estimated from Google Maps linework.
North Providence, RI Providence Co. United States	Fruit Hill Ave. / Olney Ave. (41.84908, -71.46447)	Roundabout Existing	All-Way Yield Unknown	3 Approaches 0 Driveways 29.3588	Other (At-Grade) Single-Lane	2012	ICD estimated from Google Maps linework.
Manchester, NH Hillsborough Co. United States	Goffstown Rd. / Eddy Rd. / Amoskeag St. / I-293 Ramps (43.00402, -71.47507)	Rotary Existing	Uncontrolled Unknown	4 Approaches 0 Driveways	Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified)
Kingston, RI Washington Co. United States	Kingstown Rd. / Point Judith Rd. (41.43422, -71.48238)	Rotary Existing	Unknown Unknown	3 Approaches 0 Driveways 81.4821	Other (At-Grade) Multilane (2 Lane, unspecified)		Functional Class: Arterial ICD estimated from Google Maps linework.
North Providence, RI Providence Co. United States	US 44 / Centerdale Bypass (41.85703, -71.48295)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 30.2447	Other (At-Grade) Single-Lane	2002	ICD estimated from Google Maps linework.
Bedford, NH Hillsborough Co. United States	Meetinghouse Rd. / Gault Rd. (42.94741, -71.49442)	Roundabout Existing	All-Way Yield Unknown	3 Approaches 0 Driveways 35.8432	Other (At-Grade) Single-Lane	2012	ICD estimated from Google Maps linework.
Smithfield, RI Providence Co. United States	Summerfield Dr. / Intervale Rd. / Alpine Ridge (41.87583, -71.49518)	Other Existing	Unknown Unknown	3 Approaches 0 Driveways 0.0000	Other (At-Grade) Unknown
Meredith, NH Belknap Co. United States	US 3 / Parade Rd. (NH 106) (43.64029, -71.49928)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 34.5728	Other (At-Grade) Single-Lane	2007	ICD estimated from Google Maps linework.
South Kingstown, RI Washington Co. United States	Kingstown Rd. / High St. (41.45105, -71.50018)	Roundabout Existing	All-Way Yield Unknown	3 Approaches 0 Driveways 28.6456	Other (At-Grade) Single-Lane	2007	Retrofitted rotary. No deflection on east leg. ICD estimated from Google Maps linework.
East Greenwich, RI Kent Co. United States	Division Rd. / New England Tech Blvd. / Old Quaker Ln. (41.66274, -71.50137)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 23.1984	Other (At-Grade) Single-Lane	2014	ICD estimated from Google Maps linework.
Bedford, NH Hillsborough Co. United States	Donald St. / Market Basket center entrance (42.96921, -71.50647)	Roundabout Existing	All-Way Yield Unknown	3 Approaches 0 Driveways 27.9653	Other (At-Grade) Single-Lane	2012	ICD estimated from Google Maps linework.
Merrimack, NH Hillsborough Co. United States	Spartan Way / Digital Dr. (42.82118, -71.50855)	Roundabout Existing	All-Way Yield Unknown	3 Approaches 0 Driveways 46.4288	Other (At-Grade) Multilane (2 Lane, unspecified)	2006	On campus of Fidelity Investments. ICD estimated from Google Maps linework.
Merrimack, NH Hillsborough Co. United States	Spartan Way / Spartan Ln. (42.81991, -71.51026)	Roundabout Existing	All-Way Yield Unknown	3 Approaches 0 Driveways 48.1818	Other (At-Grade) Multilane (2 Lane, unspecified)	2006	On campus of Fidelity Investments. ICD estimated from Google Maps linework.
Woonsocket, RI Providence Co. United States	Truman Dr. / Bernon St. (42.00007, -71.51498)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 35.0520	Other (At-Grade) Single-Lane	2019	https://www.pressreader.com/usa/woonsocket-call/20191002/281505047956752
Narragansett, RI Washington Co. United States	Succotash Rd. / Beach Row (41.37662, -71.51541)	Roundabout Existing	All-Way Yield Unknown	3 Approaches 0 Driveways 24.1972	Other (At-Grade) Single-Lane	2011	Rotary retrofitted (signage and striping). No geometric changes to add deflection. ICD estimated from Google Maps linework. 21442
Merrimack, NH Hillsborough Co. United States	Baboosic Lake Rd. / Turkey Hill Rd. (42.86727, -71.51565)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 36.5760	Other (At-Grade) Single-Lane	2021	https://www.facebook.com/merrimacktv/videos/turkey-hill-baboosic-lake-rd-roundabout-now-complete/730203548391115/
Nashua, NH Hillsborough Co. United States	SR 130 (Broad St.) / Coburn Ave. / Chuck Drudging Dr. (42.75617, -71.51653)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 28.0619	Other (At-Grade) Single-Lane	2002	Entrance to north high school, very heavy traffic in AM peak. ICD estimated from Google Maps linework.
West Warwick, RI Kent Co. United States	Providence St. / E Main St. / Central St. (41.71372, -71.51705)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 32.9870	Other (At-Grade) Single-Lane	2007	ICD estimated from Google Maps linework.
Cranston, RI Providence Co. United States	Gray Coach Ln. / Gray Coach E / Gray Coach W (41.77953, -71.52029)	Other Existing	Unknown Unknown	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Unknown
Viña del Mar, Valparaíso Valparaíso Province Chile	Ruta 60 (Autopista Troncal Sur / Calle Álvarez) / Calle Limache (-33.03551, -71.52760)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways	Other (At-Grade) Multilane (3+ Lane)
Concord, NH Merrimack Co. United States	W Portsmouth St. / Mountain Rd. / Shawmut St. / East Side Dr. (43.23702, -71.53564)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 29.5834	Other (At-Grade) Single-Lane	2017	ICD estimated from Google Maps linework.
Concord, NH Merrimack Co. United States	N. State St. / Franklin St. (43.21304, -71.54215)	Roundabout Existing	All-Way Yield Unknown	5 Approaches 0 Driveways 23.5019	Other (At-Grade) Single-Lane	2009	Fifth leg is departure only into frontage road. ICD estimated from Google Maps linework.
Goffstown, NH Hillsborough Co. United States	Center St. / Henry Bridge Rd. (43.02136, -71.54726)	Roundabout Existing	All-Way Yield Unknown	3 Approaches 1 Driveways 29.6879	Other (At-Grade) Single-Lane	2007	ICD estimated from Google Maps linework.
Concord, NH Merrimack Co. United States	Centre St. / Liberty St. (43.20410, -71.54851)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 23.5054	Other (At-Grade) Single-Lane	2008	ICD estimated from Google Maps linework.
Hudson, MA Middlesex Co. United States	Washington St. (Rte 85) / Broad St. (42.37933, -71.56500)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 55.5817	Other (At-Grade) Multilane (2 Lane, unspecified)	2013	entry channelization islands ICD estimated from Google Maps linework.
Hudson, MA Middlesex Co. United States	Washington St (Rte 85) / Central S / Main St (Rte 62) (42.39127, -71.56985)	Traffic Calming Circle Existing	All-Way Yield None	3 Approaches 0 Driveways 21.1699	Other (At-Grade) Single-Lane		On street parking in circulatory roadway ICD estimated from Google Maps linework.
Ayer, MA Middlesex Co. United States	Main St. (Rte 2A, Rte 111) / Sandy Pond Rd. / Littleton Rd. (Rte 2A, Rte 110) / Harvard Rd. (Rte 110, Rte 111) / Barnum Rd (42.55279, -71.57239)	Rotary Existing	Other None	5 Approaches 0 Driveways 118.7740	Other (At-Grade) Single-Lane		All-Yield Control expect for Barnum Rd (Stop-controlled) ICD estimated from Google Maps linework.
Concord, NH Merrimack Co. United States	Manor Rd. / Abbott Rd. (43.26422, -71.57349)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 32.0040	Other (At-Grade) Single-Lane	2018	https://www.nh.gov/dot/org/projectdevelopment/highwaydesign/roundabouts/documents/nh_roundabouts_list_details_web_version.pdf
Lancaster, NH Coos Co. United States	US 2 (Main St.) / US 3 (44.49690, -71.57632)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 34.9279	Other (At-Grade) Single-Lane	2016	https://www.nh.gov/dot/org/projectdevelopment/highwaydesign/roundabouts/documents/nh_roundabouts_list_details_web_version.pdf ICD estimated from Google Maps linework.
Concord, NH Merrimack Co. United States	Whitney Rd. / Merchants Way (43.28791, -71.58083)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane	2022	https://www.concordmonitor.com/Exit-17-rotary-landscaped-by-local-nursery-City-Council-accepts-donations-for-project-48392448
Concord, NH Merrimack Co. United States	US 4 (Old Boyce Rd.) / Whitney Rd. / Hoit Rd. (43.28906, -71.58169)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Multilane (2 Lane, 2x1 max)	2022	https://www.concordmonitor.com/A-Canterbury-homeowner-enjoys-the-storm-before-the-calm-47736538
Goffstown, NH Hillsborough Co. United States	NH 114 (S. Mast St.) / Wallace Rd. (43.01441, -71.58619)	Roundabout Existing	All-Way Yield Unknown	3 Approaches 0 Driveways 24.4516	Other (At-Grade) Single-Lane	2010	External truck apron in SE quadrant. ICD estimated from Google Maps linework.
Pepperell, MA Middlesex Co. United States	Main St. / River Rd. / Hollis St. (42.66638, -71.58831)	Other Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 38.6410	Other (At-Grade) Single-Lane		Pedestrian access to central island. ICD estimated from Google Maps linework.
Boscawen, NH Merrimack Co. United States	US 4 (King St.) / Tremont St. (43.29130, -71.59523)	Roundabout Existing	All-Way Yield Unknown	3 Approaches 0 Driveways 41.1480	Other (At-Grade) Single-Lane	2011	Merging right-turn bypass lane on south leg.
Concord, NH Merrimack Co. United States	US 3 (Village St.) / Washington St. (43.28008, -71.59997)	Roundabout Existing	All-Way Yield Unknown	3 Approaches 0 Driveways 25.2150	Other (At-Grade) Single-Lane	2014	ICD estimated from Google Maps linework.
Westborough, MA Worcester Co. United States	E Main St. / Milk St. / South St. / Brigham St. (42.26951, -71.61304)	Other Existing	Other Unknown	5 Approaches 0 Driveways 39.7706	Other (At-Grade) Multilane (2 Lane, unspecified)		Mix of stop and yield control, parking along circulatory roadway, pedestrian access to central island. ICD estimated from Google Maps linework.
Alma, QC Lac-Saint-Jean-Est Regional County Municipality Canada	Rte 172 / Rte 169 (48.60369, -71.61456)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways	Other (At-Grade) Single-Lane	2021	Year Completed estimated (2019-2021).
Berlin, MA Worcester Co. United States	River Rd W / Basset Rd (42.35534, -71.62343)	Roundabout Existing	All-Way Yield Other	4 Approaches 0 Driveways 32.6557	Other (At-Grade) Single-Lane	2016	X-W11-2 installed on all approaches splitter islands with crosswalks (high vis ladders) new sidewalks around the roundabout. context in development, more mixed-use seems to be planned for the future ICD estimated from Google Maps linework.
Berlin, MA Worcester Co. United States	River Rd W / South St / Whitney Rd (42.35764, -71.62354)	Rotary Existing	All-Way Yield None	4 Approaches 0 Driveways 60.0136	Other (At-Grade) Single-Lane		New pavement markings (shark teeth and definition of circular roadway) in 2016 ICD estimated from Google Maps linework.
Alma, QC Lac-Saint-Jean-Est Regional County Municipality Canada	Rte 169 / Avenue du Pont N / Chemin de la Grand Décharge (48.57749, -71.62818)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways	Other (At-Grade) Multilane (2 Lane, unspecified)	2020	https://www.lequotidien.com/actualites/enfin-le-grand-jour-pour-la-nouvelle-voie-de-contournement-a-alma-e60502acec48e0c3c82a6a4ea0f74ca1
Glocester, RI Providence Co. United States	Putnam Pike (US 44) / RI-102 (41.91536, -71.67162)	Roundabout Existing	All-Way Yield Unknown	3 Approaches 0 Driveways 25.7734	Other (At-Grade) Single-Lane	2017	ICD estimated from Google Maps linework.
Plymouth, NH Grafton Co. United States	US 3 / Bridge St. (NH 175A) / High St. (43.76001, -71.68737)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 29.3282	Other (At-Grade) Single-Lane	2007	Adjacent to at-grade railroad crossing. ICD estimated from Google Maps linework.
Lancaster, MA Worcester Co. United States	Lunenburg Rd. / Old Union Turnpike (42.51839, -71.69255)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 36.9723	Other (At-Grade) Single-Lane	2013	Year estimated between 2010 and 2015. ICD estimated from Google Maps linework.
Coventry, RI Kent Co. United States	Victoria Hwy (Rte 102) / Flat River Rd. (Rte 117) (41.69308, -71.69349)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 33.8894	Other (At-Grade) Single-Lane	2018	ICD estimated from Google Maps linework.
Sterling, MA Worcester Co. United States	Leominster Rd. (Rte 12) / I-190 SB Ramps (42.46038, -71.74610)	Roundabout Existing	All-Way Yield Active Pedestrian Warning (flashing yellow)	3 Approaches 0 Driveways 41.4121	Freeway Ramps (Grade-Separated) Single-Lane	2018	RRFB ICD estimated from Google Maps linework.
Sterling, MA Worcester Co. United States	Leominster Rd. (Rte 12) / Chocksett Rd. (42.45284, -71.74849)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 38.7735	Other (At-Grade) Single-Lane	2017	ICD estimated from Google Maps linework.
Worcester, MA Worcester Co. United States	Lake Ave. / S Rd. (42.27715, -71.75925)	Roundabout Existing	All-Way Yield Unknown	3 Approaches 0 Driveways 38.8821	Other (At-Grade) Multilane (2 Lane, unspecified)	2012	Crosswalks on all approaches. Year Completed estimated (2010-2014). ICD estimated from Google Maps linework.
Millbury, MA Worcester Co. United States	Elm St / Elm Ct / Rte 146 Ramps (42.18783, -71.76618)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 21.2384	Freeway Ramps (Grade-Separated) Single-lane w/ Traversable Central Island	2018	ICD estimated from Google Maps linework.