Roundabouts Database Index

29411 Results

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City, State County Country	Intersection (Lat, Lng)	Type Status	Control Type / Other Control Type	Approaches / Driveways / ICD (m)	Functional Class / LaneType	Year Completed	Comments
Overland Park, KS Johnson Co. United States	W 159th St. / Mission Rd. (38.84021, -94.63052)	Roundabout Existing	All-Way Yield Rectangular Rapid Flashing Beacon (RRFB)	4 Approaches 0 Driveways 48.7680	Other (At-Grade) Single-Lane	2017	Right-turn-only lane on west leg.
Overland Park, KS Johnson Co. United States	W 159th St. / S Pflumm Rd. (38.84016, -94.74243)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane	2020	https://twitter.com/opcares/status/1293961531567333377?lang=en
Overland Park, KS Johnson Co. United States	W 159th St. / Blue Valley High School east entrance (38.84003, -94.65406)	Roundabout Existing	All-Way Yield Rectangular Rapid Flashing Beacon (RRFB)	3 Approaches 0 Driveways 42.6717	Other (At-Grade) Multilane (2 Lane, unspecified)	2016
Overland Park, KS Johnson Co. United States	W 159th St. / Blue Valley High School west entrance (38.84002, -94.65839)	Roundabout Existing	All-Way Yield Rectangular Rapid Flashing Beacon (RRFB)	3 Approaches 0 Driveways 42.6717	Other (At-Grade) Multilane (2 Lane, unspecified)	2016
Haymarket, VA Prince William Co. United States	Bowers Hill Dr. / Gaines Mill Cir. (38.83987, -77.63056)	Roundabout Existing	All-Way Yield Other	4 Approaches 0 Driveways 28.9560	Other (At-Grade) Single-Lane	2010	Constructed as circular intersection without splitter islands 2003-2005. Splitter islands added 2009-2011.
Haymarket, VA Prince William Co. United States	Tournament Dr. / Arnold Palmer Dr. / Sawgrass Pl. (38.83984, -77.64018)	Other Existing	All-Way Yield None	4 Approaches 0 Driveways 33.5280	Other (At-Grade) Single-Lane	2004	Circle with roundabout features. Year Completed estimated (2002-2006).
Gilmore, MO St. Charles Co. United States	Pine Creek Dr. / Pine Creek Ct. (38.83970, -90.86642)	Other Existing	Uncontrolled Unknown	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Unknown
Upper Marlboro, MD Prince George's Co. United States	Rock Spring Dr. / (unknown) (38.83762, -76.84567)	Roundabout Existing	All-Way Yield Unknown	3 Approaches 0 Driveways 51.8160	Other (At-Grade) Multilane (2 Lane, unspecified)	2018	Year Completed estimated (2018-2019).
Loures, Lisbon Loures Portugal	Rua do Funchal / Rua Comandante Carvalho Araújo / (parking) (38.83691, -9.16907)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways	Other (At-Grade) Multilane (2 Lane, unspecified)
Haymarket, VA Prince William Co. United States	Tournament Dr. / Golf View Dr. / Aviara View Ct. (38.83637, -77.63885)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 33.5280	Other (At-Grade) Single-Lane	2004	Year Completed estimated (2003-2005).
Alexandria, VA Alexandria City United States	Beverley Circle: Old Dominion Blvd. / Chalfonte Dr. (38.83602, -77.07233)	Other Existing	All-Way Stop Unknown	3 Approaches 2 Driveways 0.0000	Other (At-Grade) Single-Lane		Parking within circulatory roadway. No splitter islands.
Overland Park, KS Johnson Co. United States	Lowell Ave. / 162nd St. (38.83538, -94.68283)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 48.7680	Other (At-Grade) Single-Lane	2017	Year Completed estimated (2016-2017). East leg added 2018-2020.
Alexandria, VA Alexandria City United States	Washington Circle: Circle Hill Rd. / Beverley Dr. / Canyon Dr. (38.83533, -77.07047)	Other Existing	Other Unknown	5 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane		Pedestrian access to central island. No splitter islands. Mix of stop, yield, and uncontrolled entries.
Upper Marlboro, MD Prince George's Co. United States	Governors Park Ln. / Chancelsors Dr. (38.83526, -76.73311)	Other Existing	Unknown Unknown	3 Approaches 0 Driveways 0.0000	Other (At-Grade) Unknown
Overland Park, KS Johnson Co. United States	W 161st Terr. / W 163rd St. / Flint St. (38.83472, -94.71741)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 35.3526	Other (At-Grade) Single-Lane	2007	Built for new development. ICD estimated from Google Maps linework.
Haymarket, VA Prince William Co. United States	Dominion Valley Dr. / Cool Spring Dr. / Bethpage Ln. (38.83405, -77.65733)	Other Existing	Unknown Unknown	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Multilane (2 Lane, unspecified)
Upper Marlboro, MD Prince George's Co. United States	Central Park Dr. / Rock Spring Dr. (38.83296, -76.84354)	Roundabout Existing	All-Way Yield Unknown	3 Approaches 0 Driveways 50.2920	Other (At-Grade) Multilane (2 Lane, unspecified)	2016
Florissant, MO St. Louis Co. United States	Vaile Ave. / Old Halls Ferry Rd. (38.83294, -90.29315)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 34.4231	Other (At-Grade) Single-Lane	2015	ICD estimated from Google Maps linework.
Rocklin, CA Placer Co. United States	Whitney Ranch Pkwy. / W Oaks Blvd. / Songbird Way (38.83190, -121.26676)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 45.7200	Other (At-Grade) Single-Lane	2019	Year Completed estimated (2018-2019).
Overland Park, KS Johnson Co. United States	Lowell Ave. / 165th St. (38.83088, -94.68238)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 48.7680	Other (At-Grade) Single-Lane	2013	Year Completed estimated (2012-2013).
Alexandria, VA Alexandria City United States	Hickory St. / Kennedy St. (38.83080, -77.06213)	Traffic Calming Circle Existing	All-Way Yield None	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-lane w/ Traversable Central Island	2024	Central island is painted only and ringed with mountable dividers. https://www.alexandriava.gov/transportation-planning/project/hickory-street-and-kennedy-street-neighborhood-mini-roundabout
Fairfax, VA Fairfax Co. United States	Patriot Cir. / Mason Pond Dr. (38.82981, -77.31152)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 42.6720	Other (At-Grade) Single-Lane	2008
Lothian, MD Anne Arundel Co. United States	MD 2 / MD 408 / MD 422 (38.82973, -76.61590)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 28.8423	Other (At-Grade) Single-Lane	1995	Completed October 1995. ICD estimated from Google Maps linework.
Overland Park, KS Johnson Co. United States	Lowell Ave. / (unknown) (38.82932, -94.68023)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 48.7680	Other (At-Grade) Single-Lane	2013	Year Completed estimated (2012-2013).
Camp Springs, MD Prince George's Co. United States	Telfair Blvd. / Midtown Square (38.82920, -76.90940)	Other Existing	Uncontrolled Unknown	3 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane
Arlington, VA Arlington Co. United States	36th St. S / S Stafford St. (38.82894, -77.08800)	Other Existing	All-Way Yield Unknown	3 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane		Parking within circulatory roadway.
Colorado Springs, CO El Paso Co. United States	Printers Pkwy. / Parkside Dr. (38.82888, -104.78714)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane	2020	https://gazette.com/government/new-1-9-million-printers-parkway-roundabout-will-open-saturday/article_9b0c6926-1ada-11eb-8af3-1fa948d84954.html
Ashland, MO Boone Co. United States	Innovation Blvd. / (unknown) (38.82886, -92.23865)	Other Existing	Uncontrolled Unknown	3 Approaches 0 Driveways 0.0000	Other (At-Grade) Unknown
Overland Park, KS Johnson Co. United States	Quivira Rd. / W 165th St. (38.82876, -94.72385)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 42.6720	Other (At-Grade) Single-Lane	2021
Olathe, KS Johnson Co. United States	S Warwick St. / 165th St. (38.82870, -94.80401)	Roundabout Existing	All-Way Yield None	2 Approaches 0 Driveways 26.0515	Other (At-Grade) Single-Lane	2007	ICD estimated from Google Maps linework.
St Charles, MO St. Charles Co. United States	Charlestowne Village Dr. / Keelboat Cross Station (38.82680, -90.49034)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 38.1000	Other (At-Grade) Single-Lane	2006
Annandale, VA Fairfax Co. United States	Ravensworth Rd. / Jayhawk St. / Fountain Head Dr. (38.82630, -77.19993)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 22.8600	Other (At-Grade) Single-lane w/ Traversable Central Island	2018	Modular, rapid-install roundabout.
Olathe, KS Johnson Co. United States	167th St. / Mur-Len St. (38.82566, -94.77972)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 50.2443	Other (At-Grade) Multilane (2 Lane, unspecified)	2009	Built for new development. Series of 3 roundabouts. ICD estimated from Google Maps linework.
Olathe, KS Johnson Co. United States	167th St. / (unknown) (38.82562, -94.77064)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 43.7312	Other (At-Grade) Multilane (2 Lane, unspecified)	2009	Built for new development. Series of 3 roundabouts. ICD estimated from Google Maps linework.
Olathe, KS Johnson Co. United States	167th St. / Lindenwood Dr. (38.82558, -94.78903)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 41.8703	Other (At-Grade) Multilane (2 Lane, unspecified)	2009	Built for new development. Series of 3 roundabouts. ICD estimated from Google Maps linework.
Santa Iria de Azoia, Lisbon Loures Portugal	N10 (Caminho de Santiago-Caminho Português) / Rua do Brasil (38.82551, -9.08696)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways	Other (At-Grade) Single-Lane
Overland Park, KS Johnson Co. United States	Metcalf Ave. / W 167th St. (38.82551, -94.66777)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Unknown	2019	Year Completed estimated (2018-2020).
Warrensburg, MO Johnson Co. United States	SR 13 / Old SR 13 / NW 435 Rd. (38.82513, -93.74133)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 40.9401	Other (At-Grade) Single-Lane	2012	Functional Class: Arterial ICD estimated from Google Maps linework.
Camp Springs, MD Prince George's Co. United States	Capital Gateway Dr. / Auth Rd. / Old Soper Rd. (38.82403, -76.91189)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 48.7680	Other (At-Grade) Multilane (2 Lane, unspecified)	1999	Unstriped circulatory roadway. Year Completed estimated (1995-2001).
Overland Park, KS Johnson Co. United States	Quivira Rd. / W 167th St. (38.82330, -94.72383)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 50.2920	Other (At-Grade) Single-Lane	2021
Upper Marlboro, MD Prince George's Co. United States	Woodyard Rd. / Observatory Pl. (38.82198, -76.83374)	Other Existing	Unknown Unknown	3 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane		Parking along circulatory roadway.
Warrenton, MO Warren Co. United States	Laguna Linda Ln. / I-70 WB Ramps (38.82099, -91.17761)	Roundabout Existing	All-Way Yield Unknown	3 Approaches 0 Driveways 43.7340	Freeway Ramps (Grade-Separated) Single-Lane	2018	ICD estimated from Google Maps linework.
Wentzville, MO St. Charles Co. United States	Schroeder Creek Blvd. / William Dierberg Dr. (38.82018, -90.86907)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 39.0819	Other (At-Grade) Single-Lane	2016	Paving was done in late 2016, but fully completed in 2017 -- https://www.wentzvillemo.org/departments/public_works/schroeder_creek_boulevard_extension_project.php . ICD estimated from Google Maps linework.
Gilmore, MO St. Charles Co. United States	Luetkenhaus Blvd. / Main Plaza Dr. / Wall St. / (parking) (38.82013, -90.85000)	Roundabout Existing	All-Way Yield None	5 Approaches 0 Driveways 39.6240	Other (At-Grade) Single-Lane	2012	Year Completed estimated (2011-2012).
Warrenton, MO Warren Co. United States	Laguna Linda Ln. / W Veterans Memorial Pkwy. / I-70 EB Ramps (38.81933, -91.17764)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 40.9435	Freeway Ramps (Grade-Separated) Single-Lane	2018	Elliptical shape. ICD estimated from Google Maps linework.
Wright City, MO Warren Co. United States	Lexington Ave. / Sturbridge Dr. (38.81909, -91.04345)	Other Existing	Unknown Unknown	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Unknown		No splitter islands.
Warrenton, MO Warren Co. United States	W Veterans Memorial Pkwy / Booneslick Rd. (38.81902, -91.16957)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 37.2215	Other (At-Grade) Single-Lane	2018	ICD estimated from Google Maps linework.
Old Jamestown, MO St. Louis Co. United States	Behlmann Farms Blvd. / Delcastle Dr. / Behlmann Meadows Way (38.81834, -90.26599)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 35.0520	Other (At-Grade) Single-Lane	2004
Algueirão–Mem Martins, Lisbon Sintra Portugal	N250-1 (Rua da Associação) / A16 WB Ramps / R. Caminho dos Leiteros (38.81780, -9.33883)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways	Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified)
Upper Marlboro, MD Prince George's Co. United States	Thomas Sim Lee Terrace / Mary Digges Pl. (38.81663, -76.81748)	Other Existing	Unknown Unknown	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane
Wentzville, MO St. Charles Co. United States	Schroeder Creek Blvd. / (high school access) (38.81649, -90.86931)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 40.9451	Other (At-Grade) Single-Lane	2016	Paving was done in late 2016, but fully completed in 2017 -- https://www.wentzvillemo.org/departments/public_works/schroeder_creek_boulevard_extension_project.php . ICD estimated from Google Maps linework.
Belton, MO Cass Co. United States	W North Ave. / Cherry Hill Dr. (38.81595, -94.55597)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 26.0562	Other (At-Grade) Single-Lane	2005	ICD estimated from Google Maps linework.
Belton, MO Cass Co. United States	W North Ave. / S Cleveland Ave. (38.81554, -94.54893)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 23.2646	Other (At-Grade) Single-Lane	2005	ICD estimated from Google Maps linework.
Belton, MO Cass Co. United States	W North Ave. / Westover Rd. (38.81524, -94.54478)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 24.1952	Other (At-Grade) Single-Lane	2005	ICD estimated from Google Maps linework.
Algueirão–Mem Martins, Lisbon Sintra Portugal	N250-1 / A16 EB Ramps (38.81521, -9.33903)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways	Other (At-Grade) Multilane (2 Lane, unspecified)
Algueirão–Mem Martins, Lisbon Sintra Portugal	N250-1 (Estrada da Granja do Marquês) / Estrada da Granja do Marquês / Avenida Amália Rodrigues (38.81503, -9.33605)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways	Other (At-Grade) Multilane (2 Lane, unspecified)
Belton, MO Cass Co. United States	W North Ave. / S Jefferson Ave. / Baldwin St. (38.81497, -94.53949)	Roundabout Existing	All-Way Yield None	4 Approaches 2 Driveways 27.9177	Other (At-Grade) Single-Lane	2005	Elliptical shape. ICD estimated from Google Maps linework.
Overland Park, KS Johnson Co. United States	W 175th St. / Quivira Rd. (38.81095, -94.72371)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane	2020	https://www.youtube.com/watch?v=jJkc5k7l-kg
Alexandria, VA Alexandria City United States	Cameron Station Blvd. / Brenman Park Dr. (38.80933, -77.11861)	Other Existing	All-Way Stop Unknown	3 Approaches 0 Driveways 0.0000	Other (At-Grade) Multilane (2 Lane, 2x2 max)		Pedestrian access to central island.
Colorado Springs, CO El Paso Co. United States	S Tejon St. / Cascade Ave. / Cheyenne Blvd. / E Ramona Ave. (38.80932, -104.82650)	Roundabout Existing	All-Way Yield None	5 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane	2020	Oblong shaped. https://gazette.com/cheyenneedition/traffic-circle-a-new-addition-to-ivywild-neighborhood/article_3fcc22d0-9c41-11ea-9167-03e005636fa2.html
Colorado Springs, CO El Paso Co. United States	Newport Rd. / Vapor Trl. (38.80787, -104.72680)	Roundabout Existing	Unknown Unknown	3 Approaches 0 Driveways 25.1284	Other (At-Grade) Single-Lane	2002	Y-shaped intersection. ICD estimated from Google Maps linework.
Gilmore, MO St. Charles Co. United States	S Church St. / I-70 WB Ramps (38.80639, -90.85441)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 50.2920	Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified)	2016	Year Completed estimated (2015-2016).
Algueirão–Mem Martins, Lisbon Sintra Portugal	Estrada do Algueirão / Avenida Amália Rodrigues (38.80616, -9.33720)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways	Other (At-Grade) Multilane (2 Lane, unspecified)
Santa Iria de Azoia, Lisbon Loures Portugal	N10 (Rua Dom Nuno Álvares Pereira) / Rua Jorge Alexandre Batalha Fernandes (38.80609, -9.09609)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways	Other (At-Grade) Multilane (2 Lane, unspecified)
Gardner, KS Johnson Co. United States	E Grand St. / White Dr. (38.80410, -94.91469)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 38.1600	Other (At-Grade) Single-Lane	2013	Year Completed estimated (2012-2013). ICD estimated from Google Maps linework.
Raymore, MO Cass Co. United States	MO 58 (E Walnut St.) / N Prairie Ln. / S Prairie Ln. (38.80333, -94.42059)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane	2023	https://www.modot.org/route-58-intersection-improvements
Lake St Louis, MO St. Charles Co. United States	Lake Saint Louis Blvd. / Veteran's Memorial Pkwy. / I-70 EB Ramps (38.80322, -90.77073)	Roundabout Existing	All-Way Yield None	5 Approaches 0 Driveways 67.0560	Freeway Ramps (Grade-Separated) Multilane (2 Lane, 2x1 max)	2022
Raymore, MO Cass Co. United States	MO 58 / Ward Rd. (38.80255, -94.40147)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane	2022	https://www.raymore.com/Home/Components/News/News/2466/
Roseville, CA Placer Co. United States	Holt Pkwy. / Schellhous Dr. (38.80084, -121.36400)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 30.4800	Other (At-Grade) Single-Lane	2018
Rocklin, CA Placer Co. United States	Crossings Dr. / Bass Pro Dr. (38.80077, -121.20376)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 44.1960	Other (At-Grade) Multilane (2 Lane, unspecified)	2014	Inside a mall parking area. Year Completed estimated (2013-2014). Partial concentric striped circulatory roadway.
Eisenhower East, VA Alexandria City United States	Eisenhower Ave. / Holland Ln (38.80044, -77.06079)	Other Existing	Unknown Unknown	3 Approaches 0 Driveways 0.0000	Other (At-Grade) Multilane (2 Lane, unspecified)		0
Gainesville, VA Prince William Co. United States	Links Pond Cir. / Traphill Way / Brunson Cir. (38.79921, -77.62963)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 29.7855	Other (At-Grade) Single-Lane	2004	Year Completed estimated (2003-2005). ICD estimated from Google Maps linework.
Roseville, CA Placer Co. United States	Parkside Way / McCloud Way (38.79916, -121.33110)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 26.0623	Other (At-Grade) Single-Lane	2008	ICD estimated from Google Maps linework.
Roseville, CA Placer Co. United States	Parkside Way / New Meadow Dr. (38.79915, -121.32150)	Roundabout Existing	All-Way Yield None	3 Approaches 1 Driveways 26.9931	Other (At-Grade) Single-Lane	2000	ICD estimated from Google Maps linework.
Raymore, MO Cass Co. United States	S Dean Ave. / W Lucy Webb Rd. (38.79819, -94.49394)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 28.8551	Other (At-Grade) Single-Lane	2013	ICD estimated from Google Maps linework.
Roseville, CA Placer Co. United States	Crawford Pkwy. / Schellhous Dr. (38.79793, -121.36395)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 30.4800	Other (At-Grade) Single-Lane	2018
Roseville, CA Placer Co. United States	Parkside Way / Diamond Creek Blvd. (38.79791, -121.33400)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 28.8552	Other (At-Grade) Single-Lane	2007	ICD estimated from Google Maps linework.
St Charles, MO St. Charles Co. United States	Tecumseh St. / N 3rd St. (38.79739, -90.47611)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 32.0037	Other (At-Grade) Single-Lane	2010	Merging right-turn bypass lane on east leg.
St Peters, MO St. Charles Co. United States	Executive Centre Pkwy. / Jungermann Cir. (38.79655, -90.58169)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 48.7680	Other (At-Grade) Multilane (2 Lane, 2x2 max)	2015	Two circulating lanes throughout even though side street has only one entering lane. Year Completed estimated (2014-2015).
Wentzville, MO St. Charles Co. United States	Prospect Rd. / Corporate Pkwy. / I-64 WB Exit Ramp (38.79597, -90.81810)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 42.6720	Freeway Ramps (Grade-Separated) Single-Lane	2008	Interchange replaced single at-grade intersection. Year Completed estimated (2008-2009).
Wentzville, MO St. Charles Co. United States	Prospect Rd. / I-64 EB Exit Ramp (38.79596, -90.82043)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 42.6717	Freeway Ramps (Grade-Separated) Single-Lane	2008	Interchange replaced single at-grade intersection. Year Completed estimated (2008-2009).
St Peters, MO St. Charles Co. United States	Jungermann Cir. / Wellness Dr. (38.79591, -90.57980)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 42.6720	Other (At-Grade) Single-Lane	2015	Year Completed estimated (2014-2015).
Edwardsville, IL Madison Co. United States	(access road) / (parking) (38.79590, -89.99837)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane	2019	Year Completed estimated (2018-2019).
Gilmore, MO St. Charles Co. United States	Glengarry Ct. / Kellerton Pl. (38.79542, -90.84653)	Other Existing	Unknown Unknown	3 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane		No splitter islands.
Colorado Springs, CO El Paso Co. United States	Lake Ave. / Old Broadmoor Rd. (38.79479, -104.83360)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 22.3405	Other (At-Grade) Single-Lane	1995	Year Completed unknown (before 1999). ICD estimated from Google Maps linework.
Loomis, CA Placer Co. United States	Rutherford Canyon Rd. / Shady Canyon Ct. (38.79408, -121.17740)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 42.6720	Other (At-Grade) Single-Lane	2007
Gilmore, MO St. Charles Co. United States	Village Glen Dr. / Glengarry Dr. (38.79407, -90.84755)	Other Existing	Unknown Unknown	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane		No splitter islands.
Sacavém, Lisbon Loures Portugal	N10 (Rua do Estado da Índia) / Avenida de São José / Rua Álvaro Pedro Gomes (38.79402, -9.10410)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways	Other (At-Grade) Multilane (2 Lane, unspecified)
Colorado Springs, CO El Paso Co. United States	Lake Ave. / Berthie Cir. (38.79348, -104.83950)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 16.7557	Other (At-Grade) Single-Lane	1995	Year Completed unknown (before 1999). ICD estimated from Google Maps linework.
Colorado Springs, CO El Paso Co. United States	Mesa Ave. / Park Ave. / Lake Cir. (38.79330, -104.85226)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 30.7188	Other (At-Grade) Single-Lane	2005	ICD estimated from Google Maps linework.
Deale, MD Anne Arundel Co. United States	MD 256 / MD 258 (38.79327, -76.54586)	Roundabout Existing	Unknown Unknown	3 Approaches 0 Driveways 34.4423	Other (At-Grade) Single-Lane	2006	ICD estimated from Google Maps linework.
Edwardsville, IL Madison Co. United States	N University Dr. / Hairpin Dr. (38.79313, -89.99441)	Other Existing	Unknown Unknown	3 Approaches 5 Driveways 0.0000	Other (At-Grade) Unknown
Roseville, CA Placer Co. United States	Freedom Way / (unknown) (38.79281, -121.29852)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 38.1000	Other (At-Grade) Single-Lane	2016	Yield-controlled right-turn bypass lane on west leg. Year Completed estimated (2015-2016).
Wentzville, MO St. Charles Co. United States	Wilmer Valley Dr. / Wilmer Ridge Dr. (38.79278, -90.86444)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 50.2675	Other (At-Grade) Single-Lane	2008	ICD estimated from Google Maps linework.
Roseville, CA Placer Co. United States	Freedom Way / Thrive Dr. (38.79276, -121.29625)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 38.1000	Other (At-Grade) Single-Lane	2016	Year Completed estimated (2015-2016). North leg added 2017-2018.
Hidden Valley Lake, CA Lake Co. United States	SR 29 / Hartmann Rd. (38.79274, -122.56556)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 44.6823	Other (At-Grade) Single-Lane	2019	ICD estimated from Google Maps linework.
Roseville, CA Placer Co. United States	Roseville Pkwy. / Painted Desert Way (38.79230, -121.32493)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 42.6720	Other (At-Grade) Single-Lane	2017	Yield-controlled right-turn bypass lane on north leg. East leg stubbed. 21442.
Roseville, CA Placer Co. United States	Albertsons Dr. / (parking) (38.79187, -121.31505)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 36.5760	Other (At-Grade) Single-Lane	2001	Merging right-turn bypass lane on east leg. Year Completed estimated (1998-2002).
Oxon Hill, MD Prince George's Co. United States	Oxon Hill Rd. / (parking lots) (38.79166, -77.00416)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 26.0650	Other (At-Grade) Single-Lane	2015	ICD estimated from Google Maps linework.
Colorado Springs, CO El Paso Co. United States	Lake Ave. / Lake Cir. (38.79144, -104.84880)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 23.2724	Other (At-Grade) Single-Lane	1995	Year Completed estimated (before 1999). ICD estimated from Google Maps linework.