Roundabouts Database

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
Irondequoit, NY
Monroe Co.
United States 		Rte 590 / Point Pleasant Rd.
(43.22389, -77.54493) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
38.2926 		Other (At-Grade)
Single-Lane 		2010 Series of 4 roundabouts. ICD estimated from Google Maps linework.
Rome, NY
Oneida Co.
United States 		Rte 825 (Hill Rd.) / Floyd Ave. / Brooks Rd.
(43.22258, -75.41900) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
38.2935 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		2018 Year Completed estimated (2017-2018). https://en.wikipedia.org/wiki/New_York_State_Route_825 ICD estimated from Google Maps linework.
Elgóibar, Basque Country
Guipúzcoa
Spain 		N-634 / Avenida Pedro Mugurutza / Calle Lerun
(43.22061, -2.40627) 		Roundabout
Existing 		All-Way Yield
Unknown 		4 Approaches
0 Driveways
46.1277 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		ICD estimated from Google Maps linework.
Brockport, NY
Monroe Co.
United States 		Rte 19 (Main St.-Lake Rd.) / West St. / East St.
(43.22019, -77.93696) 		Roundabout
Existing 		All-Way Yield
Unknown 		4 Approaches
0 Driveways
41.7763 		Other (At-Grade)
Single-Lane 		2012 ICD estimated from Google Maps linework.
Hamilton, ON
Hamilton
Canada 		Stone Church Rd. W / Omni Blvd.
(43.21990, -79.92443) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
31.3324 		Other (At-Grade)
Single-Lane 		2009 http://www.minnowlake.ca/Roundabouts_in_Canada_2013%20(1).pdf ICD estimated from Google Maps linework.
Varna, Varna
Varna
Bulgaria 		bulevard Republika / ulitsa Usta Kolyo Ficheto
(43.21961, 27.87432) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
 Other (At-Grade)
Single-Lane
Muskegon, MI
Muskegon Co.
United States 		Beach St. / Lakeshore Dr.
(43.21957, -86.33019) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane 		2020 https://www.mlive.com/news/muskegon/2020/06/roundabout-at-muskegons-pere-marquette-beach-opens-to-traffic.html
Watertown, WI
Dodge Co.
United States 		BUS 26 (N Church St.) / STH 16 WB Ramps / Provimi Rd.
(43.21918, -88.73837) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
43.5177 		Freeway Ramps (Grade-Separated)
Single-Lane 		2011 ICD estimated from Google Maps linework.
Hamilton, ON
Hamilton
Canada 		Stonehenge Dr. / Raymond Rd.
(43.21855, -79.94298) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
1 Driveways
30.0000 		Other (At-Grade)
Single-Lane 		2010 Year Completed estimated (2009-2011). Splitter islands added 2012-2013.
Hamilton, ON
Hamilton
Canada 		Stonehenge Dr. / Meadowlands Blvd.
(43.21763, -79.94515) 		Other
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
30.0000 		Other (At-Grade)
Single-Lane 		2003 Year Completed estimated (before 2004). Flush splitter islands added 2012-2014. Borderline roundabout.
Rome, NY
Oneida Co.
United States 		SR 825 / Ellsworth Rd.
(43.21731, -75.41796) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
55.7044 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		2002 Constructed in old air force base. ICD estimated from Google Maps linework.
Hamilton, ON
Hamilton
Canada 		Stonehenge Dr. / Thoroughbred Blvd.
(43.21655, -79.95150) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
28.0000 		Other (At-Grade)
Single-Lane 		1998 Year Completed estimated (before 2004).
Irondequoit, NY
Monroe Co.
United States 		Rte 590 / Seneca Rd.
(43.21642, -77.54655) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
38.2973 		Other (At-Grade)
Single-Lane 		2010 Series of 4 roundabouts. ICD estimated from Google Maps linework.
Windsor, WI
Dane Co.
United States 		Windsor Rd. / US 51 SB Ramps
(43.21641, -89.32400) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
38.2973 		Freeway Ramps (Grade-Separated)
Multilane (2 Lane, unspecified) 		2013 Year Completed estimated (2013-2014). ICD estimated from Google Maps linework.
Windsor, WI
Dane Co.
United States 		Windsor Rd. / N Towne Rd.
(43.21636, -89.32789) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
40.9085 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		2013 Year Completed estimated (2013-2014). ICD estimated from Google Maps linework.
Windsor, WI
Dane Co.
United States 		Windsor Rd. / US 51 NB Ramps
(43.21629, -89.32191) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
44.3902 		Freeway Ramps (Grade-Separated)
Multilane (2 Lane, unspecified) 		2013 Year Completed estimated (2013-2014). Under construction in 2013 per Streetview. ICD estimated from Google Maps linework.
Hamilton, ON
Hamilton
Canada 		Raymond Rd. / Irwin Ave.
(43.21613, -79.93984) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
30.0000 		Other (At-Grade)
Single-Lane 		2011 Year Completed estimated (2009-2012). Splitter islands added 2016-2017.
Watertown, WI
Dodge Co.
United States 		BUS 26 (N Church St.) / STH 16 EB Ramps
(43.21605, -88.73625) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
38.2976 		Freeway Ramps (Grade-Separated)
Single-Lane 		2011 ICD estimated from Google Maps linework.
Hamilton, ON
Hamilton
Canada 		Whittington Dr. / Raymond Rd.
(43.21417, -79.93589) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
30.0000 		Other (At-Grade)
Single-Lane 		2011 Year Completed estimated (2009-2012). Splitter islands added 2015.
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.
Hamilton, ON
Hamilton
Canada 		Robertson Rd. / Raymond Rd.
(43.21206, -79.93525) 		Other
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
 Other (At-Grade)
Single-Lane 		2011 No splitter islands. Year Completed estimated (2009-2012).
Irondequoit, NY
Monroe Co.
United States 		Rte 590 / Titus Ave.
(43.21195, -77.54978) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
38.3001 		Other (At-Grade)
Single-Lane 		2010 Series of 4 roundabouts. ICD estimated from Google Maps linework.
Niagara-on-the-Lake, ON
Niagara
Canada 		ON-55 (Niagara Stone Rd.) / Concession 6 Rd.
(43.21083, -79.13622) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
46.0000 		Other (At-Grade)
Single-Lane 		2014
Hamilton, ON
Hamilton
Canada 		Trinity Rd. (Hwy 52) / Jerseyville Rd. W
(43.20987, -80.04708) 		Roundabout
Existing 		All-Way Yield
Unknown 		4 Approaches
0 Driveways
36.5605 		Other (At-Grade)
Single-Lane 		2010 ICD estimated from Google Maps linework.
Ancaster, ON
Hamilton
Canada 		Wilson St. / Meadowbrook Dr. / Hamilton Dr.
(43.20797, -80.00224) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
35.6911 		Other (At-Grade)
Single-Lane 		2002 ICD estimated from Google Maps linework.
Germantown, WI
Washington Co.
United States 		STH 145 (Fond du Lac Ave.) / Donges Bay Rd.
(43.20656, -88.08297) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
36.5624 		Other (At-Grade)
Single-Lane 		2016 ICD estimated from Google Maps linework.
Germantown, WI
Washington Co.
United States 		STH 175 (Appleton Ave.) / CTH Y (Lannon Rd.)
(43.20619, -88.15727) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
34.8216 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		2017 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.
Ancaster, Hamilton, ON
Hamilton
Canada 		Wilson St. W / Shaver Rd.
(43.20145, -80.01351) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
38.3067 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		2008 http://forum.skyscraperpage.com/showthread.php?t=160141 ICD estimated from Google Maps linework.
Hamilton, ON
Hamilton
Canada 		Wilson St. W / McClure Rd. / Portia Dr.
(43.19860, -80.01798) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
43.5324 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		2015 ICD estimated from Google Maps linework.
Watertown, WI
Jefferson Co.
United States 		W Main St. (STH 19) / STH 26 NB Ramps
(43.19772, -88.76607) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
38.3091 		Freeway Ramps (Grade-Separated)
Single-Lane 		2010 ICD estimated from Google Maps linework.
Watertown, WI
Jefferson Co.
United States 		W Main St. (STH 19) / STH 26 SB Ramps
(43.19772, -88.76804) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
35.6971 		Freeway Ramps (Grade-Separated)
Single-Lane 		2010 ICD estimated from Google Maps linework.
Waunakee, WI
Dane Co.
United States 		STH 19 / River Rd.
(43.19512, -89.36551) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
60.9600 		Other (At-Grade)
Multilane (2 Lane, 2x1 max) 		2020 Yield-controlled right-turn bypass lanes on north and south legs.
Colgate, WI
Waukesha Co.
United States 		CTH Q / Hillside Rd.
(43.19319, -88.24181) 		Roundabout
Unknown 		All-Way Yield
None 		4 Approaches
0 Driveways
42.6717 		Other (At-Grade)
Single-Lane 		2023
Lisbon, WI
Waukesha Co.
United States 		STH 164 / CTH Q
(43.19316, -88.26125) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
41.7948 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		2009 Opened October 2009. ICD estimated from Google Maps linework.
Málzaga, Basque Country
Guipúzcoa
Spain 		N-634 / GI-627
(43.19310, -2.43773) 		Roundabout
Existing 		All-Way Yield
Unknown 		3 Approaches
0 Driveways
39.1827 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		ICD estimated from Google Maps linework.
Deforest, WI
Dane Co.
United States 		Savannah Dr. / Williamsburg Way
(43.19280, -89.31834) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
40.0536 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		2011 ICD estimated from Google Maps linework.
Waunakee, WI
Dane Co.
United States 		W Main St. / Century Ave.
(43.19206, -89.46181) 		Roundabout
Existing 		All-Way Yield
Unknown 		4 Approaches
0 Driveways
32.2174 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		2014 Year Completed estimated (2014-2018). ICD estimated from Google Maps linework.
Westport, WI
Dane Co.
United States 		STH 19 / STH 113 / County Hwy I
(43.19175, -89.41190) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
47.8910 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		2018 https://www.nbc15.com/content/news/MORGANs-STORY-498754641.html ICD estimated from Google Maps linework.
Éibar, Basque Country
Guipúzcoa
Spain 		N-634 / Matsaria kalea
(43.19156, -2.46718) 		Roundabout
Existing 		All-Way Yield
Unknown 		3 Approaches
0 Driveways
26.9932 		Other (At-Grade)
Single-Lane 		ICD estimated from Google Maps linework.
Éibar, Basque Country
Guipúzcoa
Spain 		N-634 / AP-8 Ramps / Azitaingo Industrialdea
(43.19061, -2.45059) 		Roundabout
Existing 		All-Way Yield
Unknown 		4 Approaches
0 Driveways
41.7966 		Freeway Ramps (Grade-Separated)
Multilane (2 Lane, unspecified) 		ICD estimated from Google Maps linework.
Watertown, WI
Jefferson Co.
United States 		E Horseshoe Rd. / CTH T
(43.19009, -88.76381) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
32.2185 		Other (At-Grade)
Single-Lane 		2007 ICD estimated from Google Maps linework.
Dover, NH
Strafford Co.
United States 		Silver St. / Knox Marsh Rd. / Spaulding Turnpike WB Ramps
(43.18845, -70.88652) 		Roundabout
Existing 		All-Way Yield
Unknown 		4 Approaches
0 Driveways
38.3149 		Freeway Ramps (Grade-Separated)
Single-Lane 		2016 ICD estimated from Google Maps linework.
Sun Prairie, WI
Dane Co.
United States 		Gaslight Dr. / Carriage Dr.
(43.18638, -89.18950) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
29.2608 		Other (At-Grade)
Single-Lane 		2003 Exact year of opening unknown. Year Completed estimated (2000-2005).
Menominee Falls, WI
Waukesha Co.
United States 		Megal Ct. / (unknown)
(43.18504, -88.10064) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
45.7200 		Other (At-Grade)
Single-Lane 		2015 Fourth leg stubbed. Year Completed estimated (2015-2016).
Sheldon, IA
O'Brien Co.
United States 		34th Ave. / Pavilion Way / Prairie Trail Rd.
(43.18342, -95.81593) 		Other
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane 		Originally just a turnaround for trucks in 2011; an unknown time later two roads were connected. No splitter island on north leg. https://www.nwestiowa.com/news/orange-city-opens-first-roundabout/article_32eaa2b4-63e7-11ee-bfc6-2baa523c8e84.html
St Catharines, ON
Niagara
Canada 		7th Street Louth / Queen Elizabeth Way WB Ramps
(43.18086, -79.30892) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
40.9324 		Freeway Ramps (Grade-Separated)
Single-Lane 		2016 Right-turn bypass lane on east leg. ICD estimated from Google Maps linework.
Lincoln, ON
Niagara
Canada 		King St. (Hwy 81) / Green Lane Rd.
(43.17965, -79.50744) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
32.2240 		Other (At-Grade)
Single-Lane 		2016 ICD estimated from Google Maps linework.
St Catharines, ON
Niagara
Canada 		7th Street Louth / Queen Elizabeth Way EB Ramps
(43.17822, -79.30900) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
36.5794 		Freeway Ramps (Grade-Separated)
Single-Lane 		2016 ICD estimated from Google Maps linework.
Zaldívar, Basque Country
Vizcaya
Spain 		N-634 / Barrio Sallabente
(43.17789, -2.49435) 		Roundabout
Existing 		All-Way Yield
Unknown 		3 Approaches
0 Driveways
40.0634 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		ICD estimated from Google Maps linework.
Waunakee, WI
Dane Co.
United States 		STH 113 / Arboretum Dr. / Bong Rd.
(43.17746, -89.41174) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
45.7200 		Other (At-Grade)
Single-Lane 		2023
Manchester, VT
Bennington Co.
United States 		Main St. / Bonnet St.
(43.17692, -73.05688) 		Roundabout
Existing 		All-Way Yield
Unknown 		3 Approaches
0 Driveways
17.4191 		Other (At-Grade)
Single-lane w/ Traversable Central Island 		2013 ICD estimated from Google Maps linework.
Sun Prairie, WI
Dane Co.
United States 		W Main St. / N Mallard Dr.
(43.17674, -89.25973) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
41.8061 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		2005 Opened November 2005. ICD estimated from Google Maps linework.
Manchester, VT
Bennington Co.
United States 		Main St. / Depot St.
(43.17641, -73.05745) 		Roundabout
Existing 		All-Way Yield
Unknown 		4 Approaches
0 Driveways
29.6128 		Other (At-Grade)
Single-Lane 		2013 ICD estimated from Google Maps linework.
Sun Prairie, WI
Dane Co.
United States 		W Main St. / N Thompson Rd.
(43.17636, -89.25448) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
47.0321 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		2005 Opened November 2005. ICD estimated from Google Maps linework.
Sun Prairie, WI
Dane Co.
United States 		W Main St. / CTH C (N Grand Ave.)
(43.17611, -89.26487) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
47.0323 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		2005 Opened November 2005. ICD estimated from Google Maps linework.
Dover, NH
Strafford Co.
United States 		Pointe Pl. / (unknown)
(43.17405, -70.85941) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
30.4800 		Other (At-Grade)
Single-Lane 		2016 Year Completed estimated (2016-2018).
Manchester, VT
Bennington Co.
United States 		Rte. 7A / Equinox (Grand Union)
(43.17309, -73.06181) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
26.1304 		Other (At-Grade)
Single-Lane 		1997 Roundabout is in a retail/outlet district in a resort area. VT 7-A is posted as a Historic Highway and is the local business route, while the parallel US 7 is a two-lane, limited access bypass that carries through truck traffic. Previously controlled by two-way stop Functional Class: Collector ICD estimated from Google Maps linework.
Greenville, MI
Montcalm Co.
United States 		Meijer Dr. / Greenville West Dr.
(43.17297, -85.27965) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
30.4855 		Other (At-Grade)
Single-Lane 		2002 Year Completed estimated (1999-2005). ICD estimated from Google Maps linework.
Brown Deer, WI
Milwaukee Co.
United States 		STH 57 / Teutonia Ave.
(43.17202, -87.96338) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
48.7680 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		2022
Brant, ON
Brant
Canada 		Rest Acres Rd. / Powerline Rd.
(43.16946, -80.38027) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
50.0000 		Other (At-Grade)
Single-Lane 		2018 Year Completed estimated (2018-2019).
Vladivostok, Primorye
Vladivostok
Russia 		Russkaya ulitsa / Borodinskaya ulitsa
(43.16904, 131.93308) 		Unknown
Existing 		Unknown
Unknown 		4 Approaches
0 Driveways
 Other (At-Grade)
Unknown
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.
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.
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.
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.
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
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.
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 		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 		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.
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.
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.
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.
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.
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.
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 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.
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.
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.
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.
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.
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.
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.
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
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.
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).
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.
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.
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.
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
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.
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.
Vladivostok, Primorye
Vladivostok
Russia 		prospekt Ostryakova / Okeanskiy prospekt
(43.13301, 131.89994) 		Other
Existing 		Unknown
Unknown 		4 Approaches
0 Driveways
 Other (At-Grade)
Unknown
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
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)
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
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 		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.
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