Roundabouts Database Index

29616 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
Brookfield, WI Waukesha Co. United States	Barker Rd. (CTH Y) / North Ave. (CTH M) (43.06136, -88.16629)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 34.9042	Other (At-Grade) Multilane (2 Lane, unspecified)	2010	Functional Class: Arterial ICD estimated from Google Maps linework.
Summit, WI Waukesha Co. United States	CTH P (N Sawyer Rd.) / I-94 WB Ramps (43.06174, -88.44228)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 47.1203	Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified)	2011	Opened November 23, 2011. ICD estimated from Google Maps linework.
Madison, WI Dane Co. United States	Glenway St. / Hillcrest Dr. (43.06437, -89.43896)	Traffic Calming Circle Existing	Unknown Unknown	4 Approaches 0 Driveways 11.3433	Other (At-Grade) Single-Lane		ICD estimated from Google Maps linework.
Summit, WI Waukesha Co. United States	CTH P (N Sawyer Rd.) / Pabst Farms Blvd. / CTH DR (43.06441, -88.44336)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 45.3731	Other (At-Grade) Multilane (2 Lane, unspecified)	2011	Opened November 23, 2011. ICD estimated from Google Maps linework.
Madison, WI Dane Co. United States	Tawny Elm Pkwy. / White Fox Ln. (43.07015, -89.56678)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 30.4800	Other (At-Grade) Single-Lane	2020
Madison, WI Dane Co. United States	Blackwolf Dr. / Samuel Dr. (43.07136, -89.53336)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 27.0463	Other (At-Grade) Single-Lane	2001	Functional Class: Local ICD estimated from Google Maps linework.
Belmont, MI Kent Co. United States	Seven Mile Rd. NE / Brewer Ave. NE (43.07137, -85.57053)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 36.5760	Other (At-Grade) Single-Lane	2008	Year Completed estimated (2006-2009).
Madison, WI Dane Co. United States	Kendall Ave. / Grand Ave. (43.07145, -89.43156)	Traffic Calming Circle Existing	Unknown Unknown	4 Approaches 0 Driveways	Other (At-Grade) Single-Lane	1997
Milwaukee, WI Milwaukee Co. United States	W Locust St. / N 21st St. (43.07156, -87.96447)	Traffic Calming Circle Existing	One-Way/Two-Way Stop None	4 Approaches 0 Driveways 16.1541	Other (At-Grade) Single-Lane	2022	N 21st St. is one-way northbound.
Milwaukee, WI Milwaukee Co. United States	E Linnwood Ave. / N Bartlett Ave. (43.07286, -87.88911)	Traffic Calming Circle Existing	Uncontrolled None	4 Approaches 0 Driveways 15.8496	Other (At-Grade) Single-Lane	2006
Portsmouth, NH Rockingham Co. United States	US 1 / US 1 Bypass / US 4 (43.07290, -70.78094)	Rotary Existing	Unknown Unknown	4 Approaches 0 Driveways 138.7179	Other (At-Grade) Unknown		ICD estimated from Google Maps linework.
Milwaukee, WI Milwaukee Co. United States	E Kenwood Dr. / N Bartlett Ave. (43.07467, -87.88911)	Traffic Calming Circle Existing	Uncontrolled None	4 Approaches 0 Driveways 16.4589	Other (At-Grade) Single-Lane		Installed before April 2005.
Milwaukee, WI Milwaukee Co. United States	N Cambridge Ave. / E Kenwood Blvd. (43.07468, -87.89152)	Traffic Calming Circle Existing	All-Way Stop Unknown	3 Approaches 0 Driveways 9.7536	Other (At-Grade) Single-lane w/ Traversable Central Island		Installed before April 2005.
Milwaukee, WI Milwaukee Co. United States	E Kenwood Blvd. / N Newhall St. (43.07468, -87.89032)	Traffic Calming Circle Existing	Uncontrolled None	4 Approaches 0 Driveways 17.6784	Other (At-Grade) Single-Lane		Installed before April 2005.
Milwaukee, WI Milwaukee Co. United States	E Hampshire Ave. / N Bartlett Ave. (43.07567, -87.88907)	Traffic Calming Circle Existing	Uncontrolled Unknown	4 Approaches 0 Driveways 16.1541	Other (At-Grade) Single-Lane		Installed before April 2005.
Madison, WI Dane Co. United States	Observatory Dr. / Walnut St. (43.07660, -89.42510)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 44.4917	Other (At-Grade) Single-Lane	2008	Opened November 8, 2008. ICD estimated from Google Maps linework.
Milwaukee, WI Milwaukee Co. United States	E Hartford Ave. / N Bartlett Ave. (43.07765, -87.88901)	Traffic Calming Circle Existing	Uncontrolled None	4 Approaches 0 Driveways 16.4589	Other (At-Grade) Single-Lane		Installed before March 2000.
Milwaukee, WI Milwaukee Co. United States	E Hartford Ave. / N Newhall St. (43.07766, -87.89023)	Traffic Calming Circle Existing	Uncontrolled None	4 Approaches 0 Driveways 16.7637	Other (At-Grade) Single-Lane		Installed before March 2000, exact date unknown
Thorold, ON Niagara Canada	Lundy's Ln. / Barker Pkwy. (43.08044, -79.18675)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 45.0000	Other (At-Grade) Single-Lane	2020	Year Completed estimated (2019-2020).
Niagara Falls, NY Niagara Co. United States	Robert Moses State Pkwy / John Daly Blvd. (43.08093, -79.05098)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 45.3609	Other (At-Grade) Multilane (2 Lane, unspecified)	2015	ICD estimated from Google Maps linework.
Niagara Falls, NY Niagara Co. United States	Rainbow Blvd. / 1st St. (43.08466, -79.06161)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 32.2741	Other (At-Grade) Single-Lane	2007	ICD estimated from Google Maps linework.
Oconomowoc, WI Waukesha Co. United States	Pabst Rd. / Olympia Fields Dr. (43.08687, -88.47287)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 48.7680	Other (At-Grade) Multilane (2 Lane, 2x1 max)	2022
(unincorporated), NY Monroe Co. United States	(parking) (43.08693, -77.80188)	Other Existing	Unknown Unknown	3 Approaches 0 Driveways 0.0000	Other (At-Grade) Unknown
Madison, WI Dane Co. United States	McLean Dr. / Sharpsburg Dr. (43.08695, -89.27359)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 26.1672	Other (At-Grade) Single-Lane	2003	Date estimated. ICD estimated from Google Maps linework.
DeWitt, NY Onondaga Co. United States	Military Circle (Rte 298 / Townline Rd. / General Motors Dr.) (43.08756, -76.11370)	Rotary Existing	Unknown Unknown	4 Approaches 0 Driveways 183.1685	Other (At-Grade) Multilane (2 Lane, unspecified)		ICD estimated from Google Maps linework.
Henrietta, NY Monroe Co. United States	Andrews Memorial Dr. / Lomb Memorial Dr. (43.08770, -77.67448)	Roundabout Existing	Unknown Unknown	4 Approaches 0 Driveways 35.7614	Other (At-Grade) Single-Lane	2003	On campus of Rochester Institute of Technology. ICD estimated from Google Maps linework.
Syracuse, NY Onondaga Co. United States	Carrier Circle (Carrier Pkwy. / I-90 Ramps / Thompson Rd.) (43.08791, -76.09052)	Rotary Existing	All-Way Yield Unknown	5 Approaches 0 Driveways 183.1674	Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified)		ICD estimated from Google Maps linework.
Madison, WI Dane Co. United States	Star Dr. / Apollo Way (43.08892, -89.27760)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 26.1663	Other (At-Grade) Single-Lane	2003	Date estimated. ICD estimated from Google Maps linework.
Madison, WI Dane Co. United States	Star Dr. / Dominion Dr. (43.09153, -89.27502)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 26.1652	Other (At-Grade) Single-Lane	2006	Date estimated. ICD estimated from Google Maps linework.
Utica, NY Oneida Co. United States	Johnson Park (43.09164, -75.23682)	Other Existing	Unknown Unknown	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Unknown		Pedestrian access to central island.
West Lincoln, ON Niagara Canada	Regional Road 20 (St Catharines St.) / Townline Rd. (43.09175, -79.53404)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways	Other (At-Grade) Single-Lane	2020	https://niagararegion.ca/projects/regional-road-20/default.aspx
Middleton, WI Dane Co. United States	Deming Way / John Q Hammond Dr. (43.09371, -89.52560)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 27.9086	Other (At-Grade) Single-Lane	2004	ICD estimated from Google Maps linework.
Madison, WI Dane Co. United States	Saturn Dr. / Milky Way (43.09423, -89.27887)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 32.0040	Other (At-Grade) Single-Lane	2016	Elliptical shaped. ICD = 105 ft x 95 ft. Year Completed estimated (2014-2017).
Madison, WI Dane Co. United States	Saturn Dr. / North Star Dr. (43.09428, -89.27589)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 30.4800	Other (At-Grade) Single-Lane	2015	Year Completed estimated (2014-2017).
Mayfield, NY Fulton Co. United States	Rte 30 / Rte 30A (43.09455, -74.27904)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 34.0131	Other (At-Grade) Single-Lane	2019	https://www.leaderherald.com/news/local-news/2019/10/roundabout-set-to-open/ ICD estimated from Google Maps linework.
Utica, NY Oneida Co. United States	Genesee St. / State St. / Park Ave. (43.09602, -75.24228)	Roundabout Existing	All-Way Yield Unknown	5 Approaches 0 Driveways 29.6518	Other (At-Grade) Single-Lane	2013	Year completed estimated (2011-2015) ICD estimated from Google Maps linework.
Brighton, NY Monroe Co. United States	E Henrietta Rd. / (unklnown) (43.09657, -77.60624)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 30.4800	Other (At-Grade) Single-Lane	2014	Merging right-turn bypass lane on south leg.
Zorra, ON Oxford Canada	Dundas St. (Road 68) / 37th Line (43.09715, -80.87243)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 34.0117	Other (At-Grade) Single-Lane	2011	ICD estimated from Google Maps linework.
Madison, WI Dane Co. United States	Winnebago St. / N 6th St. / Division St. (43.09783, -89.35031)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 23.5463	Other (At-Grade) Single-Lane	2008	Opened June 2008. ICD estimated from Google Maps linework.
Madison, WI Dane Co. United States	Ragan St. / North Star Dr. (43.09786, -89.27608)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 32.0040	Other (At-Grade) Single-Lane	2019	Year Completed estimated (2018-2020).
Kittery, ME York Co. United States	US 1 / Rte 236 (43.10072, -70.74415)	Rotary Existing	Unknown Unknown	0 Approaches 0 Driveways 91.5646	Other (At-Grade) Unknown		ICD estimated from Google Maps linework.
Newington, NH Rockingham Co. United States	Woodbury Ave. / Arboretum Dr. / US 4 EB Ramps (43.10153, -70.81503)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 39.2414	Freeway Ramps (Grade-Separated) Single-Lane	2015	ICD estimated from Google Maps linework.
Utica, NY Oneida Co. United States	Oriskany St. (Rte 5S) / John St. (43.10193, -75.22624)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Multilane (2 Lane, unspecified)	2020	https://www.wktv.com/content/news/New-roundabout-opens-in-downtown-Utica-573398001.html
Middleton, WI Dane Co. United States	Parmenter St. / US 12 WB Off-Ramp / Discovery Dr. (43.10221, -89.51196)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 31.3928	Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified)	2006	Opened October 2006. ICD estimated from Google Maps linework.
Greenwich, NY Washington Co. United States	Rte 29 / Rte 40 (43.10361, -73.51842)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 38.3681	Other (At-Grade) Single-Lane	2004	ICD estimated from Google Maps linework.
Madison, WI Dane Co. United States	Thompson Dr. / STH 30 EB Off-Ramp (43.10506, -89.30066)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 34.0073	Other (At-Grade) Multilane (2 Lane, unspecified)	2004	Opened October 22, 2004. ICD estimated from Google Maps linework.
Madison, WI Dane Co. United States	Thompson Dr. / STH 30 WB On-Ramp / Commercial Ave. (43.10643, -89.30084)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 40.9822	Other (At-Grade) Multilane (2 Lane, unspecified)	2004	Opened October 22, 2004. ICD estimated from Google Maps linework.
Cottage Grove, WI Dane Co. United States	CTH N / I-94 EB Ramps (43.10877, -89.19923)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 38.3649	Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified)	2011	Series of 3 roundabouts. ICD estimated from Google Maps linework.
Niagara Falls, ON Niagara Canada	Victoria Ave. / Bridge St. / Thorold Stone Rd. (43.10884, -79.07338)	Roundabout Existing	All-Way Yield None	5 Approaches 0 Driveways 64.0000	Other (At-Grade) Single-Lane	2022	https://www.youtube.com/watch?v=PJwDZ6g8cT0
Čapljina, Federation of Bosnia and Herzegovina Herzegovina-Neretva Canton Bosnia and Herzegovina	Ante Starčevića / Gojka Šuška (43.10933, 17.70390)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways	Other (At-Grade) Single-Lane
Oconomowoc, WI Waukesha Co. United States	Wisconsin Ave. / Walnut St. (43.10956, -88.49469)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 36.6205	Other (At-Grade) Multilane (2 Lane, unspecified)	2008	Opened August 15, 2008. ICD estimated from Google Maps linework.
Čapljina, Federation of Bosnia and Herzegovina Herzegovina-Neretva Canton Bosnia and Herzegovina	Ante Starčevića / Braće Radić / Metkovačka (43.10962, 17.70131)	Roundabout Existing	Unknown None	4 Approaches 0 Driveways	Other (At-Grade) Single-Lane
Čapljina, Federation of Bosnia and Herzegovina Herzegovina-Neretva Canton Bosnia and Herzegovina	M6 (Mate Bobana -Tasovčići) / Augusta Šenoe / (parking) (43.10987, 17.69906)	Roundabout Existing	Unknown None	4 Approaches 0 Driveways	Other (At-Grade) Single-Lane		Entrance to rail station.
West Lincoln, ON Niagara Canada	Regional Road 20 / S Grimsby Road 6 (43.11010, -79.56042)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways	Other (At-Grade) Single-Lane	2020	https://niagararegion.ca/projects/regional-road-20/default.aspx
Cottage Grove, WI Dane Co. United States	CTH N / I-94 WB Ramps (43.11037, -89.19930)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 36.6200	Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified)	2011	Series of 3 roundabouts. ICD estimated from Google Maps linework.
Cottage Grove, WI Dane Co. United States	CTH N / CTH TT (43.11198, -89.19907)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 32.2597	Other (At-Grade) Multilane (2 Lane, unspecified)	2011	Series of 3 roundabouts. ICD estimated from Google Maps linework.
Oconomowoc, WI Waukesha Co. United States	Wisconsin Ave. / Lake Dr. (43.11224, -88.43968)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 33.1314	Other (At-Grade) Single-Lane	2002	Opened October 15, 2002. Previously controlled by one-way stop Functional Class: Local ICD estimated from Google Maps linework.
Vladivostok, Primorye Vladivostok Russia	ulitsa Kapitana Shefnera / Pushkinskaya ulitsa (43.11369, 131.91756)	Other Existing	Uncontrolled Unknown	3 Approaches 0 Driveways	Other (At-Grade) Unknown
Rochester, NY Monroe Co. United States	E River Rd. / Murlin Dr. / Kendrick Rd. (43.11413, -77.63435)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 39.2334	Other (At-Grade) Single-Lane	2013	Converted from three-way intersection into four-way intersection. ICD estimated from Google Maps linework.
Vladivostok, Primorye Vladivostok Russia	ulitsa Vsevoloda Sibirtseva / ulitsa Sukhanova (43.11814, 131.90063)	Other Existing	Unknown Unknown	4 Approaches 0 Driveways	Other (At-Grade) Unknown
Vladivostok, Primorye Vladivostok Russia	Shilkinskaya ulitsa / ulitsa Vsevoloda Sibirtseva (43.11898, 131.92181)	Other Existing	Uncontrolled Unknown	3 Approaches 0 Driveways	Other (At-Grade) Unknown
St Catharines, ON Niagara Canada	Suzanne Rochon-Burnett Circle (University Rd. E / Greenhouse Ln. / Ray Woodfield Dr. / John McDonald St.) (43.12007, -79.24428)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 45.0000	Other (At-Grade) Single-Lane	2000	Initial completion estimated (before 2003). Modified approximately 2003-2007 to realign University Road leg. ICD estimated from Google Maps linework. 21442
Madison, WI Dane Co. United States	Lien Rd. / Zeier Rd. (43.12128, -89.29919)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 53.1768	Other (At-Grade) Multilane (2 Lane, unspecified)	2010	Opened October 2010. ICD estimated from Google Maps linework.
Vladivostok, Primorye Vladivostok Russia	prospekt Krasnogo Znameni / ulitsa Alliluyeva (43.12264, 131.92571)	Other Existing	Unknown Unknown	3 Approaches 0 Driveways	Other (At-Grade) Unknown
Madison, WI Dane Co. United States	Felland Rd. / Tranquility Trl. (43.12504, -89.27625)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 39.6240	Other (At-Grade) Single-Lane	2021	https://www.youtube.com/watch?v=nTuFFRcmDPY
Vladivostok , Primorye Vladivostok Urban Okrug Russia	Krasnogo Znameni prospekt / Partizanskiy prospekt / Ostryakova prospekt (43.12832, 131.90208)	Roundabout Existing	All-Way Yield None	6 Approaches 0 Driveways	Other (At-Grade) Multilane (3+ Lane)
Dover, NH Strafford Co. United States	US 4 (Boston Harbor Rd.) / Boston Harbor Rd. / Spur Rd. (43.12836, -70.84375)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 54.8640	Other (At-Grade) Multilane (2 Lane, 2x1 max)	2019
Rochester, NY Monroe Co. United States	Airport Way / Airport Rd. (43.12927, -77.67145)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 39.6240	Other (At-Grade) Single-Lane	2022	At Rochester airport. Airport Road is one-way eastbound. Constructed with temporary bypass road around construction site. https://www.rocairport.com/news-2022-06-24-roundabout.
Vladivostok, Primorye Vladivostok Russia	prospekt Ostryakova / Okeanskiy prospekt (43.13301, 131.89994)	Other Existing	Unknown Unknown	4 Approaches 0 Driveways	Other (At-Grade) Unknown
Utica, NY Oneida Co. United States	Marcy-SUNY IT Pkwy. / Technology Dr. (43.13456, -75.23939)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 57.5230	Other (At-Grade) Multilane (2 Lane, unspecified)	2014	ICD estimated from Google Maps linework.
Niagara Falls, ON Niagara Canada	Rte 101 (Mountain Rd.) / Mewburn Rd. (43.13474, -79.12551)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 54.0366	Other (At-Grade) Single-Lane	2012	ICD estimated from Google Maps linework.
Vladivostok, Primorye Vladivostok Russia	Snegovaya ulitsa / 5-ya Prokhodnaya ulitsa (43.13661, 131.92665)	Unknown Existing	Unknown Unknown	3 Approaches 0 Driveways	Other (At-Grade) Unknown
Lannon, WI Waukesha Co. United States	STH 74 (Main St.) / CTH V (Townline Dr.) / McLaughlin Rd. (43.13902, -88.18408)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 38.3459	Other (At-Grade) Multilane (2 Lane, unspecified)	2008	Opened November 15, 2008. ICD estimated from Google Maps linework.
Marcy, NY Oneida Co. United States	Marcy-SUNY IT Pkwy. / Edic Rd. (43.13954, -75.23764)	Roundabout Existing	All-Way Yield Unknown	3 Approaches 0 Driveways 44.4460	Other (At-Grade) Multilane (2 Lane, unspecified)	2014	ICD estimated from Google Maps linework.
Durham, NH Strafford Co. United States	Main St. / North Dr. (43.14065, -70.94124)	Roundabout Existing	All-Way Yield Unknown	3 Approaches 0 Driveways 30.5016	Other (At-Grade) Single-Lane	2010	ICD estimated from Google Maps linework.
Rochester, NY Monroe Co. United States	Plymouth Ave. / Ford St. (43.14373, -77.61810)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 33.5280	Other (At-Grade) Single-Lane	2005	Raised crosswalks on southwest and southeast legs (added 2017-2021). Year Completed estimated (2005-2006).
Ixonia, WI Jefferson Co. United States	STH 16 / American St. (CTH F) (43.14647, -88.59080)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 47.0551	Other (At-Grade) Single-Lane	2014	ICD estimated from Google Maps linework.
Mason City, IA Cerro Gordo Co. United States	Mohawk Boulevard / Mason City HS parking lots (43.14796, -93.16502)	Roundabout Existing	All-Way Yield Unknown	3 Approaches 0 Driveways	Other (At-Grade) Single-Lane	2013
Lannon, WI Waukesha Co. United States	CTH V (Town Line Rd.) / W Good Hope Rd. (43.14820, -88.18388)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 27.0124	Other (At-Grade) Single-Lane	2011	ICD estimated from Google Maps linework.
Lee, NH Rockingham Co. United States	US 4 / Rte 125 (43.14910, -71.00666)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 60.9600	Other (At-Grade) Multilane (2 Lane, 2x2 max)	2015	Constructed November 2003 as single-lane rotary as part of new shopping mall. Converted to multilane roundabout in 2015. First multilane roundabout conversion in New Hampshire.
Rochester, NY Monroe Co. United States	Rte 33 (Buffalo Rd.) / Mt Read Blvd. (43.15187, -77.65962)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 45.3082	Other (At-Grade) Single-Lane	2019	This was a conversion from a unique multi-lane signalized traffic circle to a roundabout. Owned by NYSDOT. ICD estimated from Google Maps linework.
Watertown, WI Jefferson Co. United States	Jefferson Rd. / CTH Y (43.15325, -88.75062)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 36.5944	Other (At-Grade) Single-Lane	2010	Near railroad crossing. ICD estimated from Google Maps linework.
Madison, WI Dane Co. United States	Hanson Rd. / Eastpark Blvd. / Portage Rd. (43.15377, -89.30464)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 35.7228	Other (At-Grade) Multilane (2 Lane, unspecified)	2008	Opened October 14, 2008. ICD estimated from Google Maps linework.
Bridgeport, NY Onondaga Co. United States	Rte 31 / Minoa Rd. (Rte 298) (43.15437, -75.97328)	Roundabout Existing	All-Way Yield Unknown	3 Approaches 0 Driveways 20.0394	Other (At-Grade) Single-Lane	2018	ICD estimated from Google Maps linework.
Watertown, WI Jefferson Co. United States	CTH Y (S Church St.) / STH 26 SB Ramps (43.15450, -88.74223)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 38.3362	Freeway Ramps (Grade-Separated) Single-Lane	2011	ICD estimated from Google Maps linework.
Rochester, NY Monroe Co. United States	Broad St. / Court St. / Broadway St. / Woodbury Blvd. (43.15493, -77.60059)	Roundabout Existing	All-Way Yield Unknown	5 Approaches 0 Driveways 40.9497	Other (At-Grade) Single-Lane	2013	ICD estimated from Google Maps linework.
Watertown, WI Jefferson Co. United States	CTH Y (S Church St.) / STH 26 NB Ramps (43.15562, -88.74126)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 35.7217	Freeway Ramps (Grade-Separated) Single-Lane	2011	ICD estimated from Google Maps linework.
Woodstock, ON Oxford Canada	Ridgewood Dr. / Lakeview Dr. / Eastview Ave. (43.15562, -80.76566)	Other Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 41.8205	Other (At-Grade) Single-Lane	2007	No splitter islands. Year Completed estimated (2006-2009). ICD estimated from Google Maps linework.
Lenox, NY Madison Co. United States	Rte 31 (Lake Rd.) / Rte 13 (N Peterboro St.) (43.15604, -75.74407)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 28.7514	Other (At-Grade) Single-Lane	2018	ICD estimated from Google Maps linework.
Merton, WI Waukesha Co. United States	CTH E / CTH VV (43.15625, -88.35119)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 34.8501	Other (At-Grade) Single-Lane	2018	ICD estimated from Google Maps linework.
Woodstock, ON Oxford Canada	Oxford Rd 17 / Oxford Rd 59 (43.15721, -80.77425)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 30.4933	Other (At-Grade) Single-Lane	2009	ICD estimated from Google Maps linework.
Niagara-on-the-Lake, ON Niagara Canada	Niagara Pkwy. / Portage Rd. (43.15820, -79.05083)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 28.7504	Other (At-Grade) Single-Lane	2004	Year Completed estimated (2002-2005). ICD estimated from Google Maps linework.
Watertown, WI Jefferson Co. United States	E Horseshoe Rd. / Jefferson Rd. (43.15839, -88.74851)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 31.3640	Other (At-Grade) Single-Lane	2010	ICD estimated from Google Maps linework.
Niagara-on-the-Lake, ON Niagara Canada	York Rd. (Regional Road 81) / Glendale Ave. (Regional Road 89) (43.16034, -79.16236)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 44.0000	Other (At-Grade) Single-Lane	2023	Add-lane right-turn bypass lanes on west and south legs. https://www.insauga.com/construction-finally-finished-on-niagara-on-the-lakes-diverging-diamond-interchange/
Watertown, WI Jefferson Co. United States	BUS 26 (S Church St.) / High Rd. (43.16088, -88.73526)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 41.8169	Other (At-Grade) Multilane (2 Lane, unspecified)	2011	ICD estimated from Google Maps linework.
Sun Prairie, WI Dane Co. United States	Leopold Way / Brown Bear Way (43.16196, -89.25238)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 29.8704	Other (At-Grade) Single-Lane	2019
Brown Deer, WI Milwaukee Co. United States	N Teutonia Ave. / W Bradley Rd. (43.16315, -87.96311)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 40.9442	Other (At-Grade) Single-Lane	2018	Year Completed estimated (2018-2019). ICD estimated from Google Maps linework.
Watertown, WI Jefferson Co. United States	E Horseshoe Rd. / CTH A (Milford St.) (43.16401, -88.76087)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 39.2014	Other (At-Grade) Single-Lane	2010	ICD estimated from Google Maps linework.
Sun Prairie, WI Dane Co. United States	O'Keeffe Ave. / (future road - S Thompson Rd) (43.16849, -89.25340)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 44.4250	Other (At-Grade) Multilane (2 Lane, unspecified)	2006	ICD estimated from Google Maps linework.
Sun Prairie, WI Dane Co. United States	O'Keeffe Ave. / (future road) (43.16863, -89.25001)	Roundabout Existing	All-Way Yield None	2 Approaches 0 Driveways 35.7141	Other (At-Grade) Multilane (2 Lane, unspecified)	2006	ICD estimated from Google Maps linework.