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
Lake Villa, IL Lake Co. United States	Cedar Lake Rd. / Monaville Rd. (42.39797, -88.09213)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 37.9254	Other (At-Grade) Single-Lane	2013	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.
Northville, MI Wayne Co. United States	Johnson Creek Dr. / (park entrance) (42.39610, -83.51860)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 38.1000	Other (At-Grade) Single-Lane	2004	Year Completed estimated (2002-2005).
Amherst, MA Hampshire Co. United States	Pleasant St / Governors Dr / Eastman Ln (42.39522, -72.52693)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 31.7529	Other (At-Grade) Single-Lane	2011	ICD estimated from Google Maps linework.
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.
Machesney Park, IL Winnebago Co. United States	Swanson Rd. / Perryville Rd. (42.39150, -88.99469)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 32.6369	Other (At-Grade) Single-Lane	2008	Year Completed estimated (2007-2009). 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.
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.
East Boston, MA Suffolk Co. United States	Saratoga St / Boardman St / Ford St (42.38701, -71.00805)	Traffic Calming Circle Existing	Other None	4 Approaches 0 Driveways 25.5821	Other (At-Grade) Single-Lane		control type: Ford St and Boardman St all-way stop On-street parking on both sides. 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.
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.
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.
Amherst, MA Hampshire Co. United States	E Pleasant St / Triangle St (42.38156, -72.51932)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 27.3487	Other (At-Grade) Single-Lane	2017	ICD estimated from Google Maps linework.
Amherst, MA Hampshire Co. United States	University Dr. / Fearing St. / (parking) (42.38077, -72.53192)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 27.4317	Other (At-Grade) Single-lane w/ Traversable Central Island	2020	Serves University of Massachusetts Parking Lot 21.
Grosse Pointe Park, MI Wayne Co. United States	Kercheval Ave. / Wayburn St. (42.38076, -82.94229)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 19.4090	Other (At-Grade) Single-Lane	2014	ICD estimated from Google Maps linework.
Johnsburg, IL McHenry Co. United States	Johnsburg Rd. / St Johns Ave. / N Chapel Hill Rd. (42.38032, -88.24188)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 33.5249	Other (At-Grade) Single-Lane	2014	Elliptical shape. Year Completed estimated (2013-2015). ICD estimated from Google Maps linework.
Northfield Township, MI Washtenaw Co. United States	N Territorial Rd. / US 23 NB Ramps (42.37969, -83.75634)	Roundabout Existing	All-Way Yield Unknown	3 Approaches 0 Driveways 39.6240	Freeway Ramps (Grade-Separated) Single-Lane	2017	Merging right-turn bypass lane on east leg.
Northfield Township, MI Washtenaw Co. United States	N Territorial Rd. / US 23 SB Ramps (42.37952, -83.75786)	Roundabout Existing	All-Way Yield Unknown	3 Approaches 0 Driveways 39.6240	Freeway Ramps (Grade-Separated) Single-Lane	2017	Merging right-turn bypass lane on west leg.
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.
Gurnee, IL Lake Co. United States	Almond Rd. / Dada Dr. (42.37601, -87.98463)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-lane w/ Traversable Central Island	2018	https://www.gurnee.il.us/government/departments/community-development/engineering/almond-and-dada-intersection
South Haven Township, MI Van Buren Co. United States	M-43 / 12th Ave. / 72nd St. (42.37490, -86.24413)	Roundabout Existing	All-Way Yield Unknown	6 Approaches 0 Driveways 42.3509	Other (At-Grade) Single-Lane	2010	ICD estimated from Google Maps linework.
Central Point, OR Jackson Co. United States	Taylor Rd. / Silver Creek Dr. (42.37467, -122.92876)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 22.0579	Other (At-Grade) Single-Lane	2004	Year Completed estimated (2003-2005). 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
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.
Bath, NY Steuben Co. United States	Rte 415 / Rte 53 (Main St.) (42.36996, -77.36402)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 37.0600	Other (At-Grade) Single-Lane	2019	ICD estimated from Google Maps linework.
Salem Township, MI Washtenaw Co. United States	N Territorial Rd. E / Pontiac Trl. (42.36546, -83.65682)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane	2022	https://www.wcroads.org/wcrc-project/pontiac-tr-n-territorial-rd-roundabout/
Chatham, NY Columbia Co. United States	Rte 66 / Rte 295 (42.36392, -73.59497)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 22.9441	Other (At-Grade) Single-Lane	2009	Small single-laner in village setting. ICD estimated from Google Maps linework.
Newfield Hamlet, NY Tompkins Co. United States	Elira Rd. (Rte 13) / Trumbull Corners Rd. (Rte 133) (42.36021, -76.59969)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 32.6531	Other (At-Grade) Single-Lane	2018	ICD estimated from Google Maps linework.
Woodstock, IL McHenry Co. United States	Charles Rd. / Raffel Rd. (42.36007, -88.42864)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 37.9483	Other (At-Grade) Single-Lane	2017	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.
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.
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.
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.
Medford, OR Jackson Co. United States	Springbrook Rd. / Cedar Links Dr. (42.35287, -122.84582)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane	2021	https://www.medfordoregon.gov/News-Articles/Springbrook-Road-Improvement-Project
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.
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.
Medford, OR Jackson Co. United States	N Cottage St. / Ohio St. (42.34260, -122.88285)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 36.1932	Other (At-Grade) Single-Lane	2012	Year Completed estimated (2011-2012). West leg religned to southwest 2016-2017. ICD estimated from Google Maps linework. 21442
Medford, OR Jackson Co. United States	OR 238 (Rossanley Dr.) / Cheshire Way / (unknown) (42.34081, -122.90492)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-lane w/ Traversable Central Island	2023	Tactile directional indicators across bicycle ramps.
Amherst, MA Hampshire Co. United States	Rte 116 (West St.) / Pomeroy Ln. / W Pomeroy Ln. (42.34000, -72.52016)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 32.0040	Other (At-Grade) Single-Lane	2023	https://www.gazettenet.com/Amherst-road-projects-starting-Monday-50879230
Chelsea, MI Washtenaw Co. United States	M-52 (Stockbridge Chelsea Rd.) / Werkner Rd. (42.33671, -84.02885)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 42.6720	Other (At-Grade) Single-Lane	2016
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.
North Chicago, IL Lake Co. United States	W Dugdale Rd. / 14th St. (42.33414, -87.86542)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 42.3784	Other (At-Grade) Single-Lane	2019	https://www.chicagotribune.com/suburbs/lake-county-news-sun/opinion/ct-lns-moran-14th-street-roundabout-st-1106-20191105-ks75xkqok5bm5ok3h5u5q64mtu-story.html 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).
Kalamazoo, MI Kalamazoo Co. United States	Gull Rd. / G Ave. (42.33324, -85.50268)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane	2021	https://wwmt.com/news/local/roundabout-opens-on-gull-road-in-comstock-township
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.
Medford, OR Jackson Co. United States	E Main St. / E 8th St. (42.32781, -122.86861)	Other Existing	Uncontrolled None	3 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane		Bicycle-only circular intersection.
Scio Township, MI Washtenaw Co. United States	Baker Rd. / Dan Hoey Rd. (42.32693, -83.88729)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 30.4800	Other (At-Grade) Single-Lane	2018
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.
Windsor, ON Essex Canada	Riverside Dr. / Manning Rd. (42.32627, -82.86818)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 19.4259	Other (At-Grade) Single-Lane	2013	Year Completed estimated (2012-2014 - streetview). ICD estimated from Google Maps linework.
Dexter, MI Washtenaw Co. United States	Baker Rd. / Shield Rd. / Dongara Dr. (42.32529, -83.88714)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 30.4800	Other (At-Grade) Single-Lane	2018
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.
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.
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.
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.
Medford, OR Jackson Co. United States	Highland Dr. / Siskiyou Blvd. (42.32110, -122.84986)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 42.6720	Other (At-Grade) Single-Lane	2006	Elliptical shaped. ICD = 140 ft x 125 ft. Fire station on south leg.
Windsor, ON Essex Canada	Mickey Renaud Way / Memorial Cup Way (42.32027, -82.92792)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 43.0000	Other (At-Grade) Single-Lane	2005	Year Completed estimated (2004-2009).
Amherst, MA Hampshire Co. United States	Bay Rd / West St (Rte 116) (42.31938, -72.52627)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 51.2193	Other (At-Grade) Single-Lane	2011	Side-by-side roundabouts replacing two T-intersections ICD estimated from Google Maps linework.
Amherst, MA Hampshire Co. United States	West St (Rte 116) / W Bay Rd (42.31886, -72.52762)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 45.9211	Other (At-Grade) Single-Lane	2011	Side-by-side roundabouts replacing two T-intersections ICD estimated from Google Maps linework.
Ann Arbor, MI Washtenaw Co. United States	Nixon Rd. / Dhu Varren Rd. / Green Rd. (42.31702, -83.70779)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 36.5760	Other (At-Grade) Single-Lane	2017
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.
Windsor, ON Essex Canada	Parent Ave. / Erie St. E (42.31363, -83.02060)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 18.5466	Other (At-Grade) Single-Lane	2011	http://www.calgaryherald.com/media+conference+held+Monday+2011+explain+proper+roundabout+intersection+Erie+Street+Parent+Avenue+Windsor+This+view+roundabout+from+Parent+looking+south/5635192/story.html 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.
Rockford, IL Winnebago Co. United States	Lyford Rd. / (medical center entrance) (42.31307, -88.95526)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 60.9600	Other (At-Grade) Single-Lane	2018	Yielding right-turn bypass lanes on south and east legs. Year Completed estimated (2018-2019).
Woodstock, IL McHenry Co. United States	S Madison St. / S South St. / Lake Ave. (42.31289, -88.44469)	Roundabout Existing	All-Way Yield Unknown	5 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane	2022	https://www.woodstockil.gov/publicworks/page/south-lake-madison-roundabout
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.
Windsor, ON Essex Canada	Brighton Rd. (CR 21) / Tecumseh Rd. E (42.31138, -82.84547)	Roundabout Existing	All-Way Yield None	3 Approaches 1 Driveways 33.0000	Other (At-Grade) Single-Lane	2010	Year Completed estimated (2009-2011).
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.
Scio Township, MI Washtenaw Co. United States	Miller Rd. / N Zeeb Rd. (42.31011, -83.83946)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane	2024	https://www.wcroads.org/wcrc-project/miller-rd-and-zeeb-rd-roundabout/
Battle Creek, MI Calhoun Co. United States	Hill Brady Rd. / Skyline Dr. (42.30946, -85.26929)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane	2023	https://www.mlive.com/news/kalamazoo/2023/10/17m-roundabout-to-open-next-month-near-battle-creek-airport-national-guard-base.html
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.
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.
Windsor, ON Essex Canada	Sandwich St. / Rosedale Ave. / University Ave. W / Riverside Dr. W (42.30681, -83.07309)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 22.0817	Other (At-Grade) Single-Lane	2017	ICD estimated from Google Maps linework.
Ann Arbor, MI Washtenaw Co. United States	Maple Rd. / (Skyline High School Entrance) (42.30557, -83.78114)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 39.6240	Other (At-Grade) Single-Lane	2007	Entrance to high school.
Ann Arbor, MI Washtenaw Co. United States	N Wagner Rd. / Miller Rd. (42.30551, -83.80006)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 35.9664	Other (At-Grade) Single-Lane	2020	https://www.wcroads.org/wcrc-project/miller-road-bridge-and-roundabout/
Ann Arbor, MI Washtenaw Co. United States	Huron Pkwy. / Nixon Rd. (42.30516, -83.70748)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 30.4800	Other (At-Grade) Single-Lane	2009
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.
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
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.
Ann Arbor, MI Washtenaw Co. United States	Maple Rd. / M-14 WB Ramps (42.30178, -83.78112)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 159.9999	Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified)	2007
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.
Lakeshore, ON Essex Canada	Hwy 22 / Hwy 2 (42.30096, -82.78384)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 48.5842	Other (At-Grade) Multilane (2 Lane, unspecified)	2015	At-grade rail crossing on north leg. ICD estimated from Google Maps linework.
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.
Windsor, ON Essex Canada	Mill St. / Felix Ave. / Ryan St. (42.30012, -83.07024)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 28.2675	Other (At-Grade) Single-Lane	2011	Year Completed estimated (2010-2012). ICD estimated from Google Maps linework.
Ann Arbor, MI Washtenaw Co. United States	Maple Rd. / M-14 EB Ramps (42.29992, -83.78104)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 48.7680	Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified)	2007
Island Lake, IL Lake Co. United States	N Darrell Rd. / Neville Rd. / W Case Rd. (42.29948, -88.17938)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane	2023	Oval shaped. Year Completed estimated (2021-2023).
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
North Lincoln Street, MA Worcester Co. United States	Lincoln St. (Rte 70) / Boylston St. (Rte 70) / Benson Ave. (42.29801, -71.76636)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 39.7526	Other (At-Grade) Multilane (2 Lane, unspecified)	2016	ICD estimated from Google Maps linework.
Kalamazoo, MI Kalamazoo Co. United States	Harrison St. / E Ransom St. / E Gull St. (42.29712, -85.57453)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 37.9863	Other (At-Grade) Multilane (2 Lane, unspecified)	2017	ICD estimated from Google Maps linework.
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.
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.
Windsor, ON Essex Canada	Plymouth Dr / (automotive warehouse access) (42.29604, -82.96552)	Roundabout Existing	All-Way Yield Unknown	3 Approaches 0 Driveways 53.8885	Other (At-Grade) Single-Lane	2013	Year Completed estimated (2011-2014). ICD estimated from Google Maps linework.
Lakeshore, ON Essex Canada	Hwy 22 (Notre Dame St.) / W Belle River Rd. (42.29336, -82.71370)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways	Other (At-Grade) Single-Lane	2019	https://www.iheartradio.ca/am800/news/no-more-detour-headaches-in-belle-river-1.9347922
Rockford, IL Winnebago Co. United States	Meridian Rd. / Auburn St. (42.29301, -89.17367)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 37.9888	Other (At-Grade) Single-Lane	2011	Yield-controlled right-turn bypass lanes on north and south legs. ICD estimated from Google Maps linework.
McHenry, IL McHenry Co. United States	S River Rd. / Dowell Rd. (42.29240, -88.21199)	Roundabout Existing	All-Way Yield Unknown	3 Approaches 0 Driveways 35.3388	Other (At-Grade) Multilane (2 Lane, unspecified)	2018	ICD estimated from Google Maps linework.
Bainbridge, NY Chenango Co. United States	Rte 206 / CR 39 (42.29073, -75.47471)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 33.5727	Other (At-Grade) Single-Lane	2007	ICD estimated from Google Maps linework.
Ann Arbor, MI Washtenaw Co. United States	Broadway St. / (unknown) / (parking) (42.29022, -83.73723)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 18.2880	Other (At-Grade) Single-lane w/ Traversable Central Island	2020
Kalamazoo, MI Kalamazoo Co. United States	Solon St. / Arboretum Pkwy. (42.28875, -85.62837)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 30.0397	Other (At-Grade) Single-Lane	2010	Yield-controlled right-turn bypass lane on northwest leg, which is one-way into the roundabout. ICD estimated from Google Maps linework.
Rockford, IL Winnebago Co. United States	N Main St. / Auburn St. (42.28863, -89.08024)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 45.7200	Other (At-Grade) Single-Lane	2013	Originally built in 2013 as multilane 2x2 roundabout. Reduced from multilane 2x2 to single-lane roundabout in 2024: https://www.wifr.com/2024/05/17/main-auburn-st-roundabout-rockford-reduce-lanes/
Kalamazoo, MI Kalamazoo Co. United States	Howard St. / Solon St. / Kendall Ave. (42.28836, -85.62660)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 45.0600	Other (At-Grade) Multilane (2 Lane, unspecified)	2010	Yield-controlled right-turn bypass lane on east leg. Kendall Avenue is one-way northbound exiting the roundabout. 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.