Roundabouts Database Index

29410 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
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.
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.
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.
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.
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.
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 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.
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
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.
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).
Saguenay, QC Le Saguenay-et-son-Fjord Canada	Rue des Mouettes / Rue des Alouettes (48.39737, -71.26184)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 30.0000	Other (At-Grade) Single-Lane	1995	Year Completed estimated (before 2005).
Foxborough, MA Norfolk Co. United States	Chestnut St / North St (42.07460, -71.25933)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 27.4821	Other (At-Grade) Single-Lane	2008	ICD estimated from Google Maps linework.
Foxborough (Foxboro), MA Norfolk Co. United States	Foxborough Blvd. / Forbes Blvd. (42.03647, -71.23459)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 42.6720	Other (At-Grade) Single-Lane	2019	Year Completed estimated (2019-2020).
Lexington, MA Middlesex Co. United States	Hancock St. / Hamilton Rd. / Burlington St. / (unknown) (42.46302, -71.23268)	Roundabout Existing	All-Way Yield None	5 Approaches 0 Driveways 23.7889	Other (At-Grade) Single-Lane	2014	ICD estimated from Google Maps linework.
Lexington, MA Middlesex Co. United States	Bedford St. / Harrington Rd. / Hancock St. (42.45014, -71.23048)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane	2023	Replaced a triangle of two-way stop intersections. https://www.lexingtonma.gov/235/Battle-Green-Streetscape-Project Video of completed roundabout: https://www.youtube.com/watch?v=dcF64ln0mjo
Waltham, MA Middlesex Co. United States	Beaver St. / Lyman St. (42.38402, -71.23042)	Roundabout Existing	All-Way Yield None	3 Approaches 2 Driveways 51.8160	Other (At-Grade) Single-Lane	2015	Unknown date of origin as traffic circle. Converted to roundabout 2015-2016.
Salem, NH Rockingham Co. United States	Tuscan Blvd. / Artisan Dr. (42.77110, -71.22775)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 44.1960	Other (At-Grade) Multilane (2 Lane, 2x2 max)	2020	In a mixed-use development called Tuscan Village.
Salem, NH Rockingham Co. United States	Tuscan Blvd. / (unknown) (42.77007, -71.22693)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 44.1960	Other (At-Grade) Multilane (2 Lane, 2x1 max)	2020	In a mixed-use development called Tuscan Village.
Salem, NH Rockingham Co. United States	Tuscan Blvd. / S Village Dr. (42.76904, -71.22519)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 44.1960	Other (At-Grade) Multilane (2 Lane, 2x1 max)	2020	In a mixed-use development called Tuscan Village.
Salem, NH Rockingham Co. United States	Via Toscana / S Village Dr. (42.77099, -71.22354)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 33.5280	Other (At-Grade) Single-Lane	2020	In a mixed-use development called Tuscan Village.
Quebec, QC Capitale-Nationale Region Canada	Ave. Honore-Mercier / Place de l'Assemblee (46.80959, -71.21263)	Other Existing	Other None	2 Approaches 0 Driveways 40.8714	Other (At-Grade) Single-Lane		Fountain in central island added in August 2007. ICD estimated from Google Maps linework.
Norwood, MA Norfolk Co. United States	Washington St. / Upland Rd. / Prospect St. / Fulton St. (42.20417, -71.19667)	Other Existing	Other Unknown	5 Approaches 3 Driveways 46.0047	Other (At-Grade) Single-Lane		Wide circular roadway New Pavement markings on circular roadway approx 2016 (e.g. splitter island, traffic lanes dedicated LT T RT on Prospect St) New pavement markings to extend/complete central island. Markings go into roadway on washington street. no additional pm on Washington street to delineate TL. Missing or submerged curbs, various layers of resurfacing and fixtures of potholes. Sidewalks present, CW present CW SB along Washington St very long (2 x 70 - 90 ft) possible drainage issues, general water management concerns with condition existing inlets Bus lane 34E on Washington Street; bus stop just south of traffic circle ICD estimated from Google Maps linework.
Newton, MA Middlesex Co. United States	Wheeler Rd. / Meadowbrook Rd. (42.30915, -71.19085)	Other Existing	One-Way/Two-Way Stop None	3 Approaches 0 Driveways 22.0809	Other (At-Grade) Single-Lane	2003	At elementary school. ICD estimated from Google Maps linework.
Saguenay, QC Le Saguenay-et-son-Fjord Canada	Rue de Sainte-Émilie / Rue Saint-Denis (48.41510, -71.19046)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 36.0000	Other (At-Grade) Single-Lane		Year Completed unknown (before 2005).
Tewksbury, MA Middlesex Co. United States	Jills Way / Jills Way (42.62204, -71.18720)	Other Existing	Unknown Unknown	3 Approaches 0 Driveways 0.0000	Other (At-Grade) Unknown
Norwood, MA Norfolk Co. United States	Neponset St. / US 1 Ramps (42.18827, -71.18453)	Rotary Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 164.5920	Freeway Ramps (Grade-Separated) Single-Lane
Dedham, MA Norfolk Co. United States	Needham St / Vine Rock St (42.26954, -71.18214)	Roundabout Existing	All-Way Yield None	3 Approaches 1 Driveways 120.1954	Other (At-Grade) Single-Lane	2004	No crosswalks ICD estimated from Google Maps linework.
Belmont, MA Middlesex Co. United States	Marsh St / Prospect St (42.40767, -71.18126)	Roundabout Existing	All-Way Yield None	3 Approaches 2 Driveways 45.7200	Other (At-Grade) Single-Lane		Year Completed unknown. No changes from original configuration.
Lawrence, MA Essex Co. United States	170 May St (42.71218, -71.18037)	Traffic Calming Circle Existing	Other Unknown	5 Approaches 0 Driveways 18.4287	Other (At-Grade) Single-Lane		No splitter islands. Mix of stop and yield control. ICD estimated from Google Maps linework.
Saguenay, QC Saguenay Canada	Boulevard du Saguenay / Rue Moissan / Rue Oersted / Boulevard Mellon (48.43281, -71.17983)	Roundabout Existing	All-Way Yield None	5 Approaches 0 Driveways 31.6974	Other (At-Grade) Single-Lane	2000	Year Completed estimated (before 2005). ICD estimated from Google Maps linework.
Watertown, MA Middlesex Co. United States	Common St. / Orchard St. / Church St. (42.37243, -71.17858)	Roundabout Existing	All-Way Yield None	5 Approaches 0 Driveways 33.5277	Other (At-Grade) Single-Lane	2020
Lévis, QC Lévis Canada	Boulevard Alphonse-Desjardins / Rue Champagnat / Rue Dorimène Desjardins / Côte du Passage (46.80332, -71.17789)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 28.6133	Other (At-Grade) Single-Lane	2012	Year Completed estimated (2012-2013). ICD estimated from Google Maps linework.
Belmont, MA Middlesex Co. United States	Prospect St / Clifton St (42.40403, -71.17635)	Traffic Calming Circle Existing	Other None	3 Approaches 0 Driveways 24.3840	Other (At-Grade) Single-Lane		two yield-controlled, one stop-controlled approaches
Lawrence, MA Essex Co. United States	Margin St. / Medford St. / Melrose St. / Hancock St. / Bodwell St. (42.70103, -71.17348)	Other Existing	All-Way Stop Unknown	5 Approaches 0 Driveways 21.9429	Other (At-Grade) Single-Lane		ICD estimated from Google Maps linework.
Dedham, MA Norfolk Co. United States	Washington St / Boston Providence Hwy (42.25003, -71.17133)	Rotary Existing	Signal None	4 Approaches 5 Driveways 67.1888	Other (At-Grade) Multilane (2 Lane, unspecified)		Boston Providence Hwy extends straight through the rotary ICD estimated from Google Maps linework.
Westwood, MA Norfolk Co. United States	East St. / US 95 Ramps / Canton St. / Allied St. (42.22317, -71.17071)	Rotary Existing	Unknown Unknown	6 Approaches 0 Driveways 86.6751	Freeway Ramps (Grade-Separated) Unknown		ICD estimated from Google Maps linework.
Lévis, QC Lévis Canada	Rue Christophe-Colomb / Rue Louis H. La Fontaine / Rue de la Pascaline / Rue Charles Rodrigue (46.77829, -71.16995)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 39.2594	Other (At-Grade) Single-Lane	2013	ICD estimated from Google Maps linework.
Lévis, QC Lévis Canada	Rue Champagnat / Rue St-Omer (46.81184, -71.16927)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 38.4175	Other (At-Grade) Single-Lane	2008	Year Completed estimated (2007-2009 - streetview) ICD estimated from Google Maps linework.
Belmont, MA Middlesex Co. United States	Orchard St / Stone St (42.39213, -71.16707)	Traffic Calming Circle Existing	Uncontrolled None	3 Approaches 6 Driveways 57.3345	Other (At-Grade) Single-Lane		No traffic signs nor pavement markings present. ICD estimated from Google Maps linework.
West Roxbury, MA Suffolk Co. United States	W. Roxbury Pkwy. / Lagrange St. / Newton St. / Hammond Pond Pkwy. / Hammond St. (42.31049, -71.16329)	Rotary Existing	All-Way Yield Unknown	5 Approaches 1 Driveways 72.4235	Other (At-Grade) Multilane (2 Lane, unspecified)	2014	Retrofitted in 2014 with the pavement markings. ICD estimated from Google Maps linework. Lacks entry deflection on multiple legs, intersection sight distance.
Somerset, MA Bristol Co. United States	Brayton Ave / Riverside Ave / Wilbur Ave (41.72272, -71.16043)	Rotary Existing	Other None	4 Approaches 1 Driveways 33.8738	Other (At-Grade) Single-Lane		Brayton approach is stop-controlled ICD estimated from Google Maps linework.
Cambridge, MA Middlesex Co. United States	Grove St. / Washington St. / Blanchard Rd. (42.38637, -71.16042)	Roundabout Existing	All-Way Yield None	3 Approaches 3 Driveways 22.0537	Other (At-Grade) Single-Lane	2006	ICD estimated from Google Maps linework.
Brighton, MA Suffolk Co. United States	Beacon St / Soldiers Field Parkway / Parsons St / US 20 (42.35821, -71.16022)	Rotary Existing	Other None	5 Approaches 0 Driveways 147.3851	Other (At-Grade) Multilane (3+ Lane)		Lane redesign in approx. 2013 Pavement markings redone in approx. 2010. Control Type: mix of Signal, stop and yield signs. All approaches have their own treatment. ICD estimated from Google Maps linework.
Dedham, MA Norfolk Co. United States	East St. / Cedar St. (42.23184, -71.15963)	Roundabout Existing	All-Way Yield None	3 Approaches 1 Driveways 36.5760	Other (At-Grade) Single-Lane	2015	Old circle converted into a roundabout 2014-2015.
Woburn, MA Middlesex Co. United States	I-95 Ramps / MA 38 (Main St.) (42.49945, -71.15711)	Rotary Existing	Unknown Unknown	4 Approaches 0 Driveways 30.8196	Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified)		ICD estimated from Google Maps linework.
Tiverton, RI Newport Co. United States	Stafford Rd. / William S. Canning Blvd. / Hurst Ln. / (casino access) (41.66205, -71.15353)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 39.2593	Other (At-Grade) Unknown	2018	ICD estimated from Google Maps linework.
West Roxbury, MA Suffolk Co. United States	W. Roxbury Pkwy. / Grove St. (42.30330, -71.15137)	Rotary Existing	Unknown Unknown	0 Approaches 0 Driveways 72.4319	Other (At-Grade) Unknown		ICD estimated from Google Maps linework.
West Roxbury, MA Suffolk Co. United States	W. Roxbury Pkwy. / Centre St. (42.28730, -71.14774)	Rotary Existing	Unknown Unknown	4 Approaches 0 Driveways 68.9162	Other (At-Grade) Unknown		ICD estimated from Google Maps linework.
West Roxbury, MA Suffolk Co. United States	W. Roxbury Pkwy. / Veterans of Foreign Wars Pkwy. (42.29649, -71.14560)	Rotary Existing	Unknown Unknown	0 Approaches 0 Driveways 67.1393	Other (At-Grade) Unknown		ICD estimated from Google Maps linework.
Cambridge, MA Middlesex Co. United States	Concord Ave (US 3) / Alewife Brook Parkway (Rte 2) (42.38844, -71.14346)	Roundabout Existing	All-Way Yield None	3 Approaches 1 Driveways 56.4557	Other (At-Grade) Multilane (2 Lane, unspecified)		Pavement markings installed in 2017. No crosswalks. ICD estimated from Google Maps linework.
Cambridge, MA Middlesex Co. United States	Concord Ave / New St / Fresh Pond Pkwy (US 3, Rte 2) (42.38670, -71.14100)	Roundabout Existing	All-Way Yield None	3 Approaches 1 Driveways 38.8144	Other (At-Grade) Multilane (2 Lane, unspecified)		Pavement markings for bike conflict areas added in approx. 2018 (on New St exit). ICD estimated from Google Maps linework.
Grand Turk, Turks Islands Grand Turk Turks And Caicos Islands	Lighthouse Rd. / (unknown) (21.47721, -71.14092)	Roundabout Existing	All-Way Yield Unknown	3 Approaches 0 Driveways 66.6839	Other (At-Grade) Single-Lane		ICD estimated from Google Maps linework.
Brookline, MA Norfolk Co. United States	Lee St / Warren St / Dudley St (42.32272, -71.13750)	Rotary Existing	Other None	3 Approaches 0 Driveways 52.9826	Other (At-Grade) Multilane (2 Lane, unspecified)		ICD estimated from Google Maps linework.
Winchester, MA Middlesex Co. United States	Main St / Mt Vernon St / Church St / Park St / Laraway Rd (42.45281, -71.13716)	Rotary Existing	Uncontrolled Pedestrian Signal (red-yellow-green to drivers)	5 Approaches 0 Driveways 47.5856	Other (At-Grade) Single-Lane		Improved ped crossings (markings) approx. 2001. Ped access to train station nearby. Bike racks. on-street parking on circular roadway. ICD estimated from Google Maps linework.
Winchester, MA Middlesex Co. United States	Main St (Rte 38) / Everell Rd / Bacon St / Grove St (42.44236, -71.13586)	Traffic Calming Circle Existing	Other None	5 Approaches 0 Driveways 23.7968	Other (At-Grade) Single-Lane		ICD estimated from Google Maps linework.
Somerville, MA Middlesex Co. United States	Mystic Valley Pkwy. / Alewife Brook Pkwy. (42.41465, -71.13133)	Rotary Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 25.5708	Other (At-Grade) Single-Lane		ICD estimated from Google Maps linework.
Somerville, MA Middlesex Co. United States	Alewife Brook Pkwy (Rte 16) / Powder House Blvd (42.40871, -71.13069)	Rotary Existing	Other None	3 Approaches 6 Driveways 73.1924	Other (At-Grade) Multilane (2 Lane, unspecified)		Powder House Blvd left turn must yield to the SB entering traffic. ICD estimated from Google Maps linework.
Canton, MA Norfolk Co. United States	Pleasant St. / Bolivar St. / Lincolnshire Dr. (42.15077, -71.12804)	Roundabout Existing	All-Way Yield Rectangular Rapid Flashing Beacon (RRFB)	4 Approaches 0 Driveways 39.6240	Other (At-Grade) Single-Lane	2015
Boston, MA Suffolk Co. United States	Braeburn Rd / Myopia Rd (42.26185, -71.12645)	Traffic Calming Circle Existing	One-Way/Two-Way Stop None	3 Approaches 1 Driveways 21.3360	Other (At-Grade) Single-Lane	2002
Highlands, MA Bristol Co. United States	President Ave (US 6) / N Eastern Ave (US 6) / Rte 24 Ramps (41.71141, -71.12394)	Rotary Existing	All-Way Yield None	3 Approaches 0 Driveways 134.6275	Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified)		ICD estimated from Google Maps linework.
Jamaica Plain, MA Suffolk Co. United States	Arborway / Prince St. / Pond St. (42.31339, -71.12175)	Rotary Existing	All-Way Yield Unknown	6 Approaches 0 Driveways 82.1352	Other (At-Grade) Multilane (2 Lane, unspecified)		ICD estimated from Google Maps linework.
Jamaica Plain, MA Suffolk Co. United States	Arborway / Centre St. (42.30899, -71.12169)	Rotary Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 75.9583	Other (At-Grade) Multilane (2 Lane, unspecified)		ICD estimated from Google Maps linework.
Ossipee, NH Carroll Co. United States	Rte 28 / Rte 171 (Water Village Rd.) / Courthouse Square (43.68666, -71.12119)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 41.1480	Other (At-Grade) Single-Lane	2020	https://www.conwaydailysun.com/news/local/ossipee-thanks-state-for-installing-roundabout/article_5f74f482-b0bd-11ea-b12d-9fccb24a7c41.html
Brookline, MA Norfolk Co. United States	Chestnut St / Pond Ave (42.32283, -71.11966)	Rotary Existing	All-Way Yield None	3 Approaches 1 Driveways 36.2047	Other (At-Grade) Single-Lane		ICD estimated from Google Maps linework.
Medford, MA Middlesex Co. United States	Winthrop St. / High St. / Rural Ave. (42.42129, -71.11800)	Roundabout Existing	All-Way Yield None	5 Approaches 0 Driveways 32.0040	Other (At-Grade) Single-Lane	2019	Painted splitter islands. Right-turn-only lanes on southwest and south legs. Converted from traffic circle in 2018-2019.
Somerville, MA Middlesex Co. United States	Powder House Square [Powder House Blvd. / Broadway / College Ave. / Werner St.] (42.40114, -71.11677)	Roundabout Existing	All-Way Yield None	6 Approaches 0 Driveways 70.1040	Other (At-Grade) Single-Lane	2021	Originally 2-lane traffic circle with signal control on all entries and central island originally accessible for pedestrians. Converted to a single-lane roundabout in 2021 using only signing, striping, and raised markers. As of March 2022, all signals (including pedestrian signals) have been covered.
North Andover, MA Essex Co. United States	Massachusetts Ave. / Andover St. / Johnson St. / Great Pond Rd. (42.68399, -71.11274)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 32.4844	Other (At-Grade) Single-Lane	2008	ICD estimated from Google Maps linework.
Boischatel, QC La Côte-de-Beaupré Regional County Municipality Canada	Rue Dugal / Rue de l'Estran (46.90396, -71.11098)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 35.0000	Other (At-Grade) Single-Lane	2000	Year Completed estimated (before 2007).
Cambridge, MA Middlesex Co. United States	Memorial Dr (Rte 3) / Brookline St / BU Bridge (Rte 2) (42.35424, -71.11081)	Rotary Existing	Other None	4 Approaches 0 Driveways 84.7297	Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified)		Control Types: Signals on BU Bridge approach and exit, other approaches yield sign. ICD estimated from Google Maps linework.
Jamaica Plain, MA Suffolk Co. United States	Hyde Square Rotary (Centre St. / Perkins St. / Day St.) (42.32193, -71.10991)	Rotary Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 24.7255	Other (At-Grade) Single-Lane		Stop control on Day St. Reconfigured in 2018 but retains stop control on Day St. ICD estimated from Google Maps linework.
North Conway, NH Carroll Co. United States	North-South Rd. / Mountain Valley Blvd. (44.01996, -71.10962)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 34.3536	Other (At-Grade) Single-Lane	2007	Right-turn bypass lane in NW quadrant. East leg stubbed for future use. Adjacent to Lowe's Home Improvement center. ICD estimated from Google Maps linework.
Conway, NH Carroll Co. United States	North-South Rd / (Walmart parking) (44.01823, -71.10901)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 35.2134	Other (At-Grade) Single-Lane	2014	https://www.nh.gov/dot/org/projectdevelopment/highwaydesign/roundabouts/documents/nh_roundabouts_list_details_web_version.pdf ICD estimated from Google Maps linework.
Conway, NH Carroll Co. United States	North-South Rd. / Common Ct. (44.02297, -71.10868)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 38.1000	Other (At-Grade) Single-Lane	2022	Rear entrance to Settler's Green shopping plaza. The east leg is under construction 2023 for big box retail, which should open in 2024.
Boston, MA Suffolk Co. United States	Franklin Park Rotary (Morton St. / Arborway / Forest Hills Dr.) (42.30055, -71.10665)	Rotary Removed	All-Way Yield Unknown	4 Approaches 0 Driveways 78.6186	Other (At-Grade) Multilane (2 Lane, unspecified)	2016	Replaced with signalized intersection. ICD estimated from Google Maps linework.
Medford, MA Middlesex Co. United States	Salem St. (Rte 60) / I-93 Ramps (42.41946, -71.10398)	Rotary Existing	All-Way Yield None	4 Approaches 0 Driveways 149.8864	Freeway Ramps (Grade-Separated) Single-Lane		ICD estimated from Google Maps linework.
Medford, MA Middlesex Co. United States	Fellsway W. / Forest St. / S Border Rd. / I-93 Ramps (42.42933, -71.10333)	Rotary Existing	Unknown Unknown	4 Approaches 0 Driveways 132.2319	Freeway Ramps (Grade-Separated) Unknown		ICD estimated from Google Maps linework.
Jamaica Plain, MA Suffolk Co. United States	Heath Square Rotary (Heath St. / New Heath St. / Hensley St. / Parker St.) (42.32630, -71.10037)	Rotary Existing	All-Way Yield Unknown	5 Approaches 0 Driveways 33.5538	Other (At-Grade) Single-Lane	2004	Converted to circular rotary from triangular intersection in 2004. ICD estimated from Google Maps linework.
Medford, MA Middlesex Co. United States	Highland Ave. / Woodland Rd. / Elm St. (42.44247, -71.09392)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 53.3400	Other (At-Grade) Single-Lane	2015	Added roundabout style pavement markings on approaches and definition of circulating roadway in approx. 2015. Right-turn-only lane and two-lane exit on north leg.
Malden, MA Middlesex Co. United States	Fellsway E / Highland Ave (42.43419, -71.08356)	Traffic Calming Circle Existing	One-Way/Two-Way Stop None	4 Approaches 0 Driveways 24.6814	Other (At-Grade) Multilane (2 Lane, unspecified)		ICD estimated from Google Maps linework.
Somerville, MA Middlesex Co. United States	Great River Rd. / Grand Union Blvd. (42.39621, -71.08140)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 31.7524	Other (At-Grade) Single-Lane	2011	ICD estimated from Google Maps linework.
Wakefield, MA Middlesex Co. United States	Rte 129 (Salem St.-Lowell St.) / Haverhill St. / I-95 Ramps (42.52541, -71.08090)	Rotary Existing	All-Way Yield None	5 Approaches 0 Driveways 0.0000	Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified)		Pavement markings improvement in 2016.
Saint-Henri, QC Bellechasse Regional County Municipality Canada	Route Campagna / Rue des Prés-Verts / Rue Commerciale (46.70046, -71.07274)	Roundabout Existing	All-Way Yield None	4 Approaches 1 Driveways 47.5070	Other (At-Grade) Single-Lane	2004	ICD estimated from Google Maps linework.
Epping, NH Rockingham Co. United States	Fresh River Road / Epping Crossing development entrance (43.03021, -71.06982)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 33.1758	Other (At-Grade) Single-Lane	2003	ICD estimated from Google Maps linework.
Everett, MA Middlesex Co. United States	Revere Beach Pkwy. (Rte 16) / Mystic View Rd. / Santilli Hwy (42.40238, -71.06892)	Signalized Roundabout/Circle Existing	Signal None	5 Approaches 0 Driveways 155.4480	Other (At-Grade) Multilane (3+ Lane)		Revere Beach Pkwy extends through the rotary. ICD 560 ft x 460 ft.
Boston, MA Suffolk Co. United States	Broadway / Main (42.40244, -71.06048)	Rotary Existing	Unknown Unknown	0 Approaches 0 Driveways 123.4694	Other (At-Grade) Unknown		ICD estimated from Google Maps linework.
Melrose, MA Middlesex Co. United States	Green St. / Howard S. (42.46562, -71.05908)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 24.3840	Other (At-Grade) Single-Lane	2019	Replaced stop-controlled triangle set of intersections.
Saint-Henri, QC Bellechasse Regional County Municipality Canada	Route Campagna / Rue Commerciale (46.68761, -71.05781)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 51.6147	Other (At-Grade) Single-Lane	2004	ICD estimated from Google Maps linework.
Boston, MA Suffolk Co. United States	Old Colony Ave. / Columbia Rd. / Southampton St. (42.32935, -71.05222)	Rotary Existing	Unknown Unknown	5 Approaches 0 Driveways 66.2213	Other (At-Grade) Multilane (2 Lane, unspecified)		Functional Class: Arterial ICD estimated from Google Maps linework.
Boston, MA Suffolk Co. United States	Columbia Rd. / William J. Day Blvd. (42.32172, -71.05128)	Rotary Existing	Unknown Unknown	4 Approaches 0 Driveways 69.7616	Other (At-Grade) Multilane (2 Lane, unspecified)		Functional Class: Arterial ICD estimated from Google Maps linework.
Boston, MA Suffolk Co. United States	Morrissey Blvd. / Neponset Ave. (Rte 3A) / Redfield St. / Gallivan Blvd. (Rte 203) / Walnut St. (42.28656, -71.04280)	Signalized Roundabout/Circle Existing	Signal None	6 Approaches 3 Driveways 499.9997	Freeway Ramps (Grade-Separated) Multilane (3+ Lane)		ICD = 500 ft x 325 ft.
Boston, MA Suffolk Co. United States	Dominic J Bianculli Blvd / University Dr (42.31403, -71.04246)	Roundabout Existing	All-Way Yield Unknown	3 Approaches 1 Driveways 37.0930	Other (At-Grade) Single-Lane	2018	This rotary seems to have been demolished in 2016 and converted to a roundabout in 2018. ICD estimated from Google Maps linework.
Saguenay, QC Saguenay Canada	Rue Jacques-Cartier E / Boulevard Talbot (48.42400, -71.04228)	Roundabout Existing	All-Way Yield Unknown	3 Approaches 0 Driveways 30.1177	Other (At-Grade) Single-Lane	2000	Year Completed estimated (before 2005). ICD estimated from Google Maps linework.
Saguenay, QC Saguenay Canada	Rue Jacques-Cartier E / Rue du Foyer / Rue des Franciscaines (48.42346, -71.03839)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 25.3626	Other (At-Grade) Single-Lane	2000	Year Completed estimated (before 2005). ICD estimated from Google Maps linework.
Boston, MA Suffolk Co. United States	Northern Ave / Massport Haul Rd / Fid Kennedy Rd (42.34767, -71.03621)	Traffic Calming Circle Existing	Other None	4 Approaches 1 Driveways 24.7154	Other (At-Grade) Single-Lane		New pavement markings (roundabout like) on approaches in June 2017. Control Type: 2 yield (Northern Ave), 1 stop Massport Haul Rd and 1 uncontrolled (stop sign is missing?) (Fid Kennedy Ave). ICD estimated from Google Maps linework.
Boston, MA Suffolk Co. United States	Willard St. / I-93 Ramps / Furnace Brook Expwy. (42.24208, -71.02673)	Rotary Existing	Unknown Unknown	4 Approaches 0 Driveways 99.0276	Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified)		ICD estimated from Google Maps linework.
Boston, MA Suffolk Co. United States	William J Day Blvd / Broadway (42.33584, -71.02402)	Rotary Existing	Uncontrolled None	3 Approaches 0 Driveways 19.4229	Other (At-Grade) Multilane (2 Lane, unspecified)		No pavement markings on circular roadway. On street parking on circular roadway. ICD estimated from Google Maps linework.
Revere, MA Suffolk Co. United States	Copeland Circle [Rte 60 (Squire Rd.) / US 1 Ramps] (42.43008, -71.01710)	Rotary Existing	Unknown Unknown	4 Approaches 0 Driveways 381.0000	Freeway Ramps (Grade-Separated) Multilane (2 Lane, 2x2 max)		Retrofitted (November 2018) with multi-lane approaches/departures on the Route 1 ramps and roundabout style pavement markings and signs within the circulating roadway. ICD = 1250 ft x 880 ft. 21442
Braintree Highlands, MA Norfolk Co. United States	South St. / (unknown) (42.17309, -71.01367)	Roundabout Existing	All-Way Yield Unknown	3 Approaches 0 Driveways 30.4800	Other (At-Grade) Single-Lane	2002	Painted splitter island on southeast leg. Year Completed estimated (2001-2002).
Saguenay, QC Saguenay Canada	Chemin St-Anicet (Rte 170) / Chemin de l'Aéroport / Rue de Plateau (48.34197, -71.01246)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 65.8896	Other (At-Grade) Single-Lane	2012	https://translate.google.com/translate?hl=en&sl=fr&u=https://www.neomedia.com/saguenay-lac-st-jean/actualites/actualites/272506/pavage-dans-le-secteur-de-laeroport-a-la-baie ICD estimated from Google Maps linework.
Saugus, MA Essex Co. United States	Main St / Central St / Hamilton St (42.46473, -71.01002)	Other Existing	Other None	4 Approaches 1 Driveways 37.8851	Other (At-Grade) Single-Lane		Town square traffic circle. Two legs are stop-controlled, on-street parking. ICD estimated from Google Maps linework.