Roundabouts Database Index

29867 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
Afonsoeiro, Setúbal Montijo Portugal	Estrada Nacional 5 / Circular Externa / Rua Vasco da Gama (38.69332, -8.95082)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways	Other (At-Grade) Multilane (2 Lane, unspecified)
Sacramento, CA Sacramento Co. United States	Airport Blvd. / Lindbergh Dr. / Aviation Dr. (38.69345, -121.59025)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 39.6240	Other (At-Grade) Single-Lane	2011	South leg is exit only.
Almendralejo, Estremadura Badajoz Spain	Calle Jarabugo / Calle Sup 37ii (38.69413, -6.43824)	Roundabout Existing	All-Way Yield Unknown	3 Approaches 0 Driveways	Other (At-Grade) Single-Lane
Chesapeake Beach, MD Calvert Co. United States	Harrison Blvd. / Sansbury Dr. (38.69561, -76.55797)	Roundabout Existing	All-Way Yield Unknown	3 Approaches 0 Driveways 24.3840	Other (At-Grade) Single-Lane	1997	Year Completed estimated (1993-2004).
Almendralejo, Estremadura Badajoz Spain	Calle Sup 37ii (38.69575, -6.43608)	Roundabout Existing	All-Way Yield Unknown	2 Approaches 0 Driveways	Other (At-Grade) Multilane (2 Lane, unspecified)		Concentric circulatory roadway striping.
Accokeek, MD Prince George's Co. United States	St Mary's View Rd. / Lusby Ridge Rd. (38.69721, -76.95157)	Other Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 27.4320	Other (At-Grade) Single-Lane		No splitter island on south leg.
Lewes, DE Sussex Co. United States	Beaver Dam Rd. / Quiet Harbor Way (38.69743, -75.21559)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane	2021	https://www.capegazette.com/article/roundabouts-abound/228013
Afonsoeiro, Setúbal Montijo Portugal	N4 (Circular Externa) / (Fórum Montijo shopping centre entrance) (38.69761, -8.94484)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways	Other (At-Grade) Multilane (2 Lane, unspecified)
São Domingos de Rana, Lisbon Cascais Portugal	Avenida dos Bombeiros Voluntários / Rua do Dia Mundial da Criança (38.69795, -9.35301)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways	Other (At-Grade) Single-Lane
Warrenton, VA Fauquier Co. United States	E Shirley Ave. / Falmouth St. (38.69843, -77.78795)	Roundabout Existing	All-Way Yield Unknown	3 Approaches 0 Driveways 13.0496	Other (At-Grade) Single-lane w/ Traversable Central Island	2018	Constructed Fall 2018, mini-roundabout with one bypass lane ICD estimated from Google Maps linework.
Sedalia, MO Pettis Co. United States	Rte Y (W 16th St.) / Winchester Dr. (38.69957, -93.27763)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane	2011	Year Completed estimated (2010-2012).
Brandywine, MD Prince George's Co. United States	MD 373 / Accokeek Rd. / MD 5 (Branch Ave.) SB On-Ramp (38.70076, -76.87599)	Roundabout Existing	All-Way Yield None	2 Approaches 0 Driveways 39.6240	Freeway Ramps (Grade-Separated) Single-Lane	2019	MD 5 (Branch Ave.) was converted to limited access. https://www.thebaynet.com/articles/0419/newtrafficshiftstartsinbrandywineareathursday.html.
Georgetown, DE Sussex Co. United States	Sand Hill Rd. / Clark Dr. (38.70163, -75.36785)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 39.6240	Other (At-Grade) Single-Lane	2022	West leg is entrance to Cheer Community Center. East leg stubbed. https://www.wmdt.com/2022/08/georgetown-east-gateway-project-completed-ensuring-safer-roadways-for-locals/
Afonsoeiro, Setúbal Montijo Portugal	N4 (Circular Externa) / Avenida das Portas da Cidade (38.70209, -8.94456)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways	Other (At-Grade) Multilane (2 Lane, unspecified)
Cascais, Lisbon Cascais Portugal	N9 (Avenida de Sintra) / Rua Henrique de Seixas (38.70356, -9.41787)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways	Other (At-Grade) Multilane (2 Lane, unspecified)
Normandy, MO St. Louis Co. United States	Natural Bridge Rd. (SR 115) / Florissant Rd. (38.70418, -90.29664)	Roundabout Existing	All-Way Yield None	3 Approaches 1 Driveways 39.6240	Other (At-Grade) Single-Lane	2015
Weldon Spring, MO St. Charles Co. United States	Technology Dr. / Meadows Pkwy. / Wolfrum Rd. / I-64 WB Exit Ramp (38.70526, -90.67410)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 60.9600	Freeway Ramps (Grade-Separated) Single-Lane		Oval shaped. ICD = 200 ft x 180 ft. Built initially as 2x2 roundabout in 2005-2006. Concentric circulatory roadway striping. Converted to single lane using by striping out inner circulatory roadway lane and left entry lane on southwest leg 2020-2021.
Jardia, Setúbal Montijo Portugal	N4 (Avenida Dom Manuel) / Rua das Forças Armadas / Rua Infante Dom Francisco (38.70686, -8.92771)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways	Other (At-Grade) Multilane (2 Lane, unspecified)
Afonsoeiro, Setúbal Montijo Portugal	N4 (Circular Externa) / Avenida Garcia da Orta (38.70694, -8.94501)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways	Other (At-Grade) Multilane (2 Lane, unspecified)
Warrensburg, MO Johnson Co. United States	SR 13 / Old SR 13 / SE 101st Rd. (38.70853, -93.73029)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 41.0071	Other (At-Grade) Single-Lane	2011	Functional Class: Arterial ICD estimated from Google Maps linework.
Alcochete, Setúbal Alcochete Portugal	N4 / N118 (38.70905, -8.89566)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways	Other (At-Grade) Multilane (2 Lane, unspecified)
Rehoboth Beach, DE Sussex Co. United States	Coatue Blvd. / Wauwinet Ct. / Sconset Ct. (38.70921, -75.13040)	Other Existing	Unknown Unknown	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane		No splitter islands.
Rehoboth Beach, DE Sussex Co. United States	Wanoma Cir. / Coatue Blvd. (38.70922, -75.12642)	Other Existing	Unknown Unknown	3 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane		No splitter islands.
Linda-a-Velha, Lisbon Oeiras Portugal	Avenida dos Bombeiros Voluntários de Algés / Alameda Engenheiro José Mattos e Silva / A36 NB Ramp (38.70931, -9.22470)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways	Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified)		Oval shaped.
Caxias, Lisbon Oeiras Portugal	Rua Calvet de Magalhães / Avenida António Sena da Silva / Rua do Penedo (38.71033, -9.28560)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways	Other (At-Grade) Multilane (2 Lane, unspecified)
Caxias, Lisbon Oeiras Portugal	Avenida das Seleções / Estrada Militar / A9 SB Ramps (38.71045, -9.26562)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways	Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified)
Praia da Vitória, Terceira Island Portugal	Estrada da Circunvalação (Rte 2A) / Caminho dos Poços (38.71093, -27.06084)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 51.2571	Other (At-Grade) Single-Lane		ICD estimated from Google Maps linework.
Mount Vernon, VA Fairfax Co. United States	Mount Vernon Memorial Hwy (38.71132, -77.08612)	Other Existing	Unknown Unknown	2 Approaches 0 Driveways 0.0000	Other (At-Grade) Unknown		Parking along circulatory roadway.
Bridgeville, DE Sussex Co. United States	Heritage Shore Dr. (38.71171, -75.59194)	Other Existing	Unknown Unknown	2 Approaches 0 Driveways 0.0000	Other (At-Grade) Unknown
Bridgeville, DE Sussex Co. United States	Heritage Shore Dr. / (future roads) (38.71236, -75.59344)	Other Existing	Unknown Unknown	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Unknown
Afonsoeiro, Setúbal Montijo Portugal	Circular Externa / Rua Antero de Quental (38.71345, -8.94616)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways	Other (At-Grade) Multilane (2 Lane, unspecified)
Linda-a-Velha, Lisbon Oeiras Portugal	Avenida Maximiano Lemos / Alameda Fernão Lopes / Rua Quinta das Romeiras / Rua Afonso Praça / A36 SB Ramp (38.71369, -9.22492)	Roundabout Existing	All-Way Yield None	5 Approaches 0 Driveways	Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified)
Lewes, DE Sussex Co. United States	Cardiff Circle (38.71458, -75.17947)	Other Existing	Unknown Unknown	3 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane
Owings, MD Calvert Co. United States	Cross Point Dr. / Blue Sky Ct. / Bear Claw Ct. (38.71468, -76.61554)	Other Existing	Unknown Unknown	3 Approaches 4 Driveways 0.0000	Other (At-Grade) Single-Lane		No splitter islands.
Rehoboth Beach, DE Sussex Co. United States	Rehoboth Ave. / Grove St. (38.71501, -75.09075)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 32.6163	Other (At-Grade) Multilane (2 Lane, unspecified)	2003	Yield-controlled right-turn bypass lane on SB approach. Fishhook pavement markings. Heavy bicycle and pedestrian traffic. Extensive queuing with beach-related surges. Functional Class: Arterial ICD estimated from Google Maps linework.
Owings, MD Calvert Co. United States	Cross Point Dr. / Paulyn Dr. (38.71532, -76.61335)	Other Existing	Unknown Unknown	3 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane		No splitter islands.
Cascais, Lisbon Cascais Portugal	Avenida Condes de Barcelona / A5 Ramps / Rua do Campo Santo (38.71537, -9.38870)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways	Freeway Ramps (Grade-Separated) Multilane (3+ Lane)
Weldon Spring, MO St. Charles Co. United States	Weldon Spring Rd. / Technology Dr. / Siedentop Rd. (38.71551, -90.68906)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 39.6240	Other (At-Grade) Single-Lane	2004	Painted splitter island on east leg. Year Completed estimated (2003-2004).
Lisbon, Lisbon Lisboa Portugal	Rua de São Jorge / Avenida de Álvares Cabral / Rua João Anastácio Rosa (38.71579, -9.15871)	Roundabout Existing	All-Way Yield None	2 Approaches 0 Driveways	Other (At-Grade) Multilane (2 Lane, unspecified)		3rd street is one way out of roundabout
Afonsoeiro, Setúbal Montijo Portugal	Circular Externa / Rua das Naus (38.71601, -8.95715)	Roundabout Existing	All-Way Yield None	2 Approaches 2 Driveways	Other (At-Grade) Multilane (2 Lane, unspecified)
Linda-a-Velha, Lisbon Oeiras Portugal	Alameda António Sérgio / Avenida Carolina Michaelis (38.71625, -9.23698)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways	Other (At-Grade) Multilane (2 Lane, unspecified)
Bridgeville, DE Sussex Co. United States	Heritage Shores Cir. / White Pelican Ct. / Will's Island Dr. (38.71647, -75.60235)	Other Existing	Unknown Unknown	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane		No splitter islands.
O'Fallon, MO St. Charles Co. United States	Technology Dr. / Progress Point Pkwy. / (parking) (38.71685, -90.69499)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 39.6240	Other (At-Grade) Single-Lane	2003	Year Completed estimated (2002-2003).
Linda-a-Velha, Lisbon Oeiras Portugal	Avenida 25 de Abril de 1974 / Alameda António Sérgio / Rua Alexandre Herculano (38.71706, -9.23763)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways	Other (At-Grade) Multilane (2 Lane, unspecified)
Briatico, Calabria Vibo Valentia Italy	SP6 / SP80 (38.71758, 16.04923)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways	Other (At-Grade) Single-Lane
O'Fallon, MO St. Charles Co. United States	Technology Dr. / Waterbury Falls Dr. (38.71843, -90.69627)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 39.6240	Other (At-Grade) Single-Lane	2003	Year Completed estimated (2002-2003). Southwest leg added 2008-2009.
Owings, MD Calvert Co. United States	Good Shepherd Way / Megatha Ln. (38.71846, -76.62480)	Other Existing	Uncontrolled Unknown	3 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane
São Domingos de Rana, Lisbon Cascais Portugal	Rua dos Canteiros / Avenida Salgueiro Maia / Avenida Amália Rodrigues (38.71855, -9.34707)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways	Other (At-Grade) Single-Lane
Praia da Vitória, Terceira Island Portugal	Estrada da Circunvalação (Rte 1A) / Via Vitorino Nemesio (38.71992, -27.06340)	Roundabout Existing	All-Way Yield None	4 Approaches 1 Driveways 44.7279	Other (At-Grade) Single-Lane		ICD estimated from Google Maps linework.
Samouco, Setúbal Alcochete Portugal	M501 / Rua do Oceano / Rua da Quinta da Praia (38.72128, -9.00093)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways	Other (At-Grade) Single-Lane
Rehoboth Beach, DE Sussex Co. United States	Warrington Rd. / Healthy Way (38.72141, -75.14094)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 39.6240	Other (At-Grade) Single-Lane	2021	Year Completed estimated (2019-2021). https://deldot.gov/Programs/roundabouts/images/warrington.jpg.
Dunkirk, MD Calvert Co. United States	Ward Rd. / (entrance to park) (38.72220, -76.64529)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 36.5760	Other (At-Grade) Single-Lane	2021	https://southernmarylandchronicle.com/2021/07/02/section-of-ward-road-in-calvert-to-close-for-construction/
St. Louis, MO St. Louis Co. United States	Halls Ferry / MO 367 (38.72251, -90.24017)	Rotary Existing	All-Way Yield None	6 Approaches 0 Driveways 86.6571	Other (At-Grade) Multilane (2 Lane, unspecified)		three of the six approaches are multilane and have dual lanes of traffic merging into both lanes of the roundabout; roundabout is unstriped. Description as follows: Halls Ferry Circle is 3 lanes wide, 350 foot diameter, 35 miles per hour and has 5 major roadways entering (from http://www.ballwin.mo.us/minutes_062402.html) ICD estimated from Google Maps linework.
Rehoboth Beach, DE Sussex Co. United States	Liverpool Ln. / Oxford Ct. / Limerick Dr. / Worcester Dr. (38.72326, -75.09795)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 45.7200	Other (At-Grade) Single-Lane	2006	Year Completed estimated (2005-2006).
Security-Widefield, CO El Paso Co. United States	Fountain Mesa Rd. / Caballero Ave. / Fortman Ave. (38.72330, -104.69956)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 33.5280	Other (At-Grade) Single-Lane	2022	Year Completed estimated (2021-2022). https://www.koaa.com/news/covering-colorado/new-roundabout-but-is-it-keeping-children-safe
Bridgeville, DE Sussex Co. United States	Heritage Shores Cir. / Champions Dr. (38.72458, -75.60463)	Other Existing	Unknown Unknown	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Unknown
(unincorporated), MD Prince Georges Co. United States	Ft. Washington Rd. / Swan Creek Rd. (38.72498, -77.00491)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 25.1576	Other (At-Grade) Single-Lane	1997	Fourth leg added. Year Completed estimated (before 2001). ICD estimated from Google Maps linework.
Cirby Side, CA Placer Co. United States	Somer Ridge Dr. / (parking) (38.72754, -121.28342)	Other Existing	Unknown Unknown	3 Approaches 0 Driveways 0.0000	Other (At-Grade) Unknown
Bristow, VA Prince William Co. United States	Iron Brigade Unit Ave. / Tenth Alabama Way (38.72790, -77.54408)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 38.2008	Other (At-Grade) Single-Lane	2006	Functional Class: Local ICD estimated from Google Maps linework.
Queijas, Lisbon Oeiras Portugal	N6-2 (Estrada da Amadora - Avenida de Portugal) / Rua da Mina Grande (38.72830, -9.24809)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways	Other (At-Grade) Single-Lane
Alcabideche, Lisbon Cascais Portugal	Rotunda José Roquete [Avenida de Alcabideche / Rua de Cascais] (38.72888, -9.41113)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways	Other (At-Grade) Multilane (2 Lane, unspecified)
Alcabideche, Lisbon Cascais Portugal	Rotunda das Palmeiras [Terceira Circular / Rota do Património da Humanidade / Avenida de Alcabideche] (38.72895, -9.41449)	Roundabout Existing	All-Way Yield None	3 Approaches 1 Driveways	Other (At-Grade) Multilane (2 Lane, unspecified)
Brentsville, VA Prince William Co. United States	Twin Leaf Dr. / Spring Iris Dr. (38.72948, -77.55567)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 36.5760	Other (At-Grade) Single-Lane	2020	Year Completed estimated (2019-2020).
Lewes, DE Sussex Co. United States	Grove Estate Rd. (38.72983, -75.15914)	Other Existing	Unknown Unknown	2 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane
Alcabideche, Lisbon Cascais Portugal	N9 / A16 (Rota do Património da Humanidade) NB Ramps (38.73119, -9.41452)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways	Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified)
Jennings, MO St. Louis Co. United States	Wilson Bridge Dr. / Alexandria Place Dr. (38.73354, -90.24449)	Other Existing	Uncontrolled Unknown	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane
Cottleville, MO St. Charles Co. United States	Gutermuth Rd. / MO 364 EB Ramps (38.73394, -90.66626)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 0.0000	Freeway Ramps (Grade-Separated) Single-Lane	2020	https://www.stltoday.com/suburban-journals/stcharles/portion-of-gutermuth-to-close-for-route-364-interchange-construction/article_392e1870-c917-5df1-82ab-d83cceca50b8.html
Linton Hall, VA Prince William Co. United States	Braemar Pkwy. (VA 3080) / Iona Sound Dr. (VA 3089) (38.73510, -77.56889)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 46.5816	Other (At-Grade) Single-Lane	1999	Year Completed estimated (1994-2002). ICD estimated from Google Maps linework.
Cottleville, MO St. Charles Co. United States	Gutermuth Rd. / MO 364 WB Ramps (38.73583, -90.66567)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 0.0000	Freeway Ramps (Grade-Separated) Single-Lane	2020	https://www.stltoday.com/suburban-journals/stcharles/portion-of-gutermuth-to-close-for-route-364-interchange-construction/article_392e1870-c917-5df1-82ab-d83cceca50b8.html
Highland, IL Madison Co. United States	Iberg Rd. / Veterans Honor Pkwy. / Broadway / Saint Rose Rd. (38.73643, -89.65281)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane	2019	https://www.bnd.com/news/local/community/highland-news-leader/article137270003.html
Friendship, MD Anne Arundel Co. United States	Solomons Island Rd. (MD 2) / Friendship Rd. (MD 261) / Sansbury Rd. (38.73656, -76.59379)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 40.0594	Other (At-Grade) Single-Lane	2008	ICD estimated from Google Maps linework.
Camino, CA El Dorado Co. United States	Pondorado Rd. / (US 50 underpass) / (future road) (38.73683, -120.70547)	Roundabout Existing	All-Way Yield None	2 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane	2022	North leg passes under US 50. Future east leg not built. https://dot.ca.gov/caltrans-near-me/district-3/d3-projects/d3-us-50-camino-safety-4e620
Cottleville, MO St. Charles Co. United States	Gutermuth Rd. / (unknown) (38.73697, -90.66532)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane	2020
Troy, IL Madison Co. United States	SR 162 / Lakeview Acres Rd. (38.73777, -89.93511)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 37.2639	Other (At-Grade) Single-Lane	2013	ICD estimated from Google Maps linework.
Colorado Springs, CO El Paso Co. United States	Nelson Blvd. / Harr Ave. (38.73903, -104.80268)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 38.1948	Other (At-Grade) Single-Lane	2004	ICD estimated from Google Maps linework.
Highland, IL Madison Co. United States	Broadway / Poplar St. (38.73957, -89.67148)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 44.7156	Other (At-Grade) Single-Lane	2008	Year Completed estimated (2007-2009). ICD estimated from Google Maps linework.
Colorado Springs, CO El Paso Co. United States	Fontaine Blvd. / Lamprey Dr. (38.74007, -104.62463)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 45.7200	Other (At-Grade) Single-Lane	2018	Year Completed estimated (2017-2019).
Easton, MD Talbot Co. United States	Lakelands Dr. / Superior Cir. (38.74048, -76.06518)	Other Existing	Unknown Unknown	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane		No splitter islands on three legs.
O'Fallon, MO St. Charles Co. United States	Phoenix Pkwy. / Phoenix Dr. / Boardwalk Place Dr. (38.74122, -90.73747)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 33.5359	Other (At-Grade) Single-Lane	2001	Year Completed estimated (1996-2002). ICD estimated from Google Maps linework.
Lewes, DE Sussex Co. United States	Deep Valley Blvd. / William Dorsey St. (38.74128, -75.18701)	Other Existing	Unknown Unknown	2 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane		No splitter islands.
Linton Hall, VA Prince William Co. United States	Tartan Hills Pkwy (VA 3254) / Broadsword Dr. (VA 3256) (38.74232, -77.58066)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 27.9462	Other (At-Grade) Single-Lane	2003	ICD estimated from Google Maps linework.
Lewes, DE Sussex Co. United States	Graves Dr. / Ann Barr St. / Silo Blvd. (38.74310, -75.18566)	Other Existing	Unknown Unknown	3 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane
Warrensburg, MO Johnson Co. United States	SR 13 / State Hwy DD (38.74322, -93.68679)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 40.9872	Other (At-Grade) Single-Lane	2011	Functional Class: Arterial ICD estimated from Google Maps linework.
Alcochete, Setúbal Alcochete Portugal	Avenida do Brasil / Avenida Dom João / N119 (38.74440, -8.96961)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways	Other (At-Grade) Multilane (2 Lane, unspecified)
Manassas, VA Manassas City United States	Grant Ave. / Byrd Dr. / Bartow St. (38.74491, -77.47362)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-lane w/ Traversable Central Island	2024	Elliptical shaped. https://www.potomaclocal.com/2024/07/02/new-roundabout-opens-on-grant-avenue-as-part-of-road-diet/
Alcochete, Setúbal Alcochete Portugal	Praça Bartolomeu Dias [Avenida do Brasil / Rua 25 de Abril] (38.74507, -8.97179)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways	Other (At-Grade) Single-Lane
O'Fallon, MO St. Charles Co. United States	Phoenix Pkwy. / Redhawk Pkwy. / Red Hawk Pl. (38.74510, -90.73630)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 33.5341	Other (At-Grade) Single-Lane	2001	Year Completed estimated (1996-2002). ICD estimated from Google Maps linework.
Alcochete, Setúbal Alcochete Portugal	Rua Cajus / Rua do Láparo / Rua Alecrins (38.74521, -8.94779)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways	Other (At-Grade) Multilane (2 Lane, unspecified)
Linton Hall, VA Prince William Co. United States	Tartan Hills Pkwy. / Native Rocks Dr. / Seagate Way (38.74593, -77.58755)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 38.1911	Other (At-Grade) Single-Lane	2004	ICD estimated from Google Maps linework.
Warrenton, VA Fauquier Co. United States	Vint Hill Pkwy. / Watson Ct. / Farm Station Rd. (38.74607, -77.67465)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 41.9170	Other (At-Grade) Single-Lane	2017	Fauquier County constructed a roundabout as part of the Vint Hill small area plan and new roadway alignments for Vint Hill Parkway/Watson and Weeks Roads. ICD estimated from Google Maps linework.
Lewes, DE Sussex Co. United States	Bay Crossing Blvd. / Vessel Cove (38.74610, -75.14170)	Other Existing	Unknown Unknown	2 Approaches 6 Driveways 0.0000	Other (At-Grade) Single-Lane
Lewes, DE Sussex Co. United States	Beaver Dam Rd. / Plantation Rd. / Salt Marsh Rd. (38.74622, -75.17584)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Multilane (2 Lane, 2x2 max)	2024	https://www.wrde.com/news/roundabout-near-five-points-in-lewes-delays-opening-to-traffic/article_f4d5a7a8-f5e5-11ee-9c1c-47fda0d30d3e.html. Project map here: https://deldot.gov/public.ejs?command=PublicProjectPortalDocument&iDID=2008254&iProjectObjectID=54771
O'Fallon, MO St. Charles Co. United States	Hwy DD / Dalriada Blvd. (38.74631, -90.75882)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 50.2920	Other (At-Grade) Single-Lane	2022	Right-turn-only lanes on southwest and northeast legs. Appears to be convertible to 2x1. https://www.sccmo.org/DocumentCenter/View/18378/OF_HIGHWAY-DD
Roseville, CA Placer Co. United States	Oak St. / Washington Blvd. (38.74817, -121.28306)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 39.6240	Other (At-Grade) Multilane (2 Lane, unspecified)	2015	At City Hall with fire station. Year Completed estimated (2014-2015).
O'Fallon, MO St. Charles Co. United States	Preston Woods Pkwy. / Preston Woods Trl. / Flowering Ash Ln. (38.74881, -90.79714)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 36.5760	Other (At-Grade) Single-Lane	2009	Year Completed estimated (2008-2009).
Highland, IL Madison Co. United States	US 40 / IL 160 / Poplar St. (38.75010, -89.67197)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 40.9832	Other (At-Grade) Single-Lane	2004	Roundabout operating nicely with no accidents reported during first six months of operation. Completed October 2004. Functional Class: Arterial ICD estimated from Google Maps linework.
Porto Salvo, Lisbon Oeiras Portugal	Estrada de Leião / Estrada de Paço de Arcos / Estrada de São Marcos / Estrada Octávio Pato (38.75093, -9.30600)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways	Other (At-Grade) Multilane (3+ Lane)		Elliptical shaped.
Lewes, DE Sussex Co. United States	Governors Blvd. / Stockley Blvd. / Ross Rd. (38.75168, -75.14361)	Unknown Existing	Unknown Unknown	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Unknown
Maryland Heights, MO St. Louis Co. United States	Casino Center Dr. / (casino parking) (38.75175, -90.47969)	Other Existing	All-Way Yield None	3 Approaches 0 Driveways 39.1195	Other (At-Grade) Multilane (2 Lane, unspecified)	1999	Yield on circulatory roadway. Year Completed estimated (1996-2002) ICD estimated from Google Maps linework.
São Domingos de Benfica, Lisbon Lisboa Portugal	Rua António Albino Machado / Avenida Rui Nogueira Simões / Rua São Tomás de Aquino (38.75251, -9.16758)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways	Other (At-Grade) Multilane (3+ Lane)