Roundabouts Database

28784 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
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 		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
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)
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.
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
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 		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.
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.
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.
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).
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 		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.
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.
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
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
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.
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
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
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 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
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
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)
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
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).
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)
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)
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
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.
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
(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.
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
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
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).
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.
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/
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.
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
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.
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
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
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.
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
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)
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).
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.
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)
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)
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
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).
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)
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.
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. / 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.
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
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)
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)
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
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
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.
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.
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)
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)
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.
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.
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.
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)
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.
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)
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)
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.
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
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)
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)
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/
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.
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).
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.
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
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)
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
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.
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.
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 Jarabugo / Calle Sup 37ii
(38.69413, -6.43824) 		Roundabout
Existing 		All-Way Yield
Unknown 		3 Approaches
0 Driveways
 Other (At-Grade)
Single-Lane
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.
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)
Woodbridge, VA
Prince William Co.
United States 		Greatbridge Rd. / Chanceford Dr.
(38.69295, -77.34576) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
28.8976 		Other (At-Grade)
Single-Lane 		2003 ICD estimated from Google Maps linework.
Almendralejo, Estremadura
Badajoz
Spain 		N-630 / Calle Gonzalo Hernandez / Calle Almendro
(38.69168, -6.40553) 		Roundabout
Existing 		All-Way Yield
Unknown 		4 Approaches
2 Driveways
 Other (At-Grade)
Multilane (2 Lane, unspecified)
Almendralejo, Estremadura
Badajoz
Spain 		Carretera San Serván / (unknown)
(38.69153, -6.40953) 		Roundabout
Existing 		All-Way Yield
Unknown 		4 Approaches
0 Driveways
 Other (At-Grade)
Multilane (2 Lane, unspecified)
Almendralejo, Estremadura
Badajoz
Spain 		EX-300 / EX-359
(38.69145, -6.43905) 		Roundabout
Existing 		All-Way Yield
Unknown 		4 Approaches
1 Driveways
 Other (At-Grade)
Multilane (3+ Lane) 		Concentric circulatory roadway striping.
Georgetown, DE
Sussex Co.
United States 		The Circle (Georgetown Circle)
(38.69005, -75.38587) 		Other
Existing 		All-Way Yield
Unknown 		4 Approaches
0 Driveways
66.1876 		Other (At-Grade)
Single-Lane 		1791 New town built as county seat centered on circle instead of more traditional square. Pedestrian access to center island. Parking at buildings on the circle. No raised splitter islands. ICD estimated from Google Maps linework.
Federalsburg, MD
Caroline Co.
United States 		MD 307 / MD 313 / MD 318
(38.68938, -75.78949) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
35.4247 		Other (At-Grade)
Single-Lane 		1999 Rural, installed for safety reasons Previously controlled by two-way stop ICD estimated from Google Maps linework.
Almendralejo, Estremadura
Badajoz
Spain 		EX-300
(38.68926, -6.42754) 		Roundabout
Existing 		All-Way Yield
Unknown 		2 Approaches
0 Driveways
 Other (At-Grade)
Multilane (2 Lane, unspecified)
Almendralejo, Estremadura
Badajoz
Spain 		Avenida de A Rúa / Camino Corona / Poligono Pabellon
(38.68884, -6.41395) 		Roundabout
Existing 		All-Way Yield
Unknown 		4 Approaches
0 Driveways
 Other (At-Grade)
Single-Lane
St Louis, MO
St. Louis Co.
United States 		Willow Village Pkwy. / Beckham Ridge Ct. / Willowbrooke Manors Ct. / Kennabrooke Ct.
(38.68853, -90.41193) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
39.6240 		Other (At-Grade)
Single-Lane 		2014 One-stage unmarked pedestrian crossings.
Warrenton, VA
Fauquier Co.
United States 		US 17 Business (James Madison Hwy.) / US 15-US 17-US 29 (Eastern Bypass) SB Ramps
(38.68752, -77.78767) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
0.0000 		Freeway Ramps (Grade-Separated)
Single-Lane 		2020 http://www.virginiadot.org/projects/culpeper/warrentoninterchange.asp
Jardia, Setúbal
Montijo
Portugal 		N5 / N11-2 / Rua do Operário
(38.68648, -8.94418) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
 Other (At-Grade)
Multilane (2 Lane, unspecified)
Woodland, CA
Yolo Co.
United States 		Palm Ave. / Keystone Ave.
(38.68635, -121.77050) 		Other
Existing 		Unknown
Unknown 		4 Approaches
0 Driveways
41.0198 		Other (At-Grade)
Single-Lane 		Circular intersection in older neighborhood. ICD estimated from Google Maps linework.
Chesterfield, MO
St. Louis Co.
United States 		River Valley Dr. / River Bend Dr.
(38.68602, -90.50327) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
33.5280 		Other (At-Grade)
Single-Lane 		2003 Year Completed estimated (2002-2003).
Warrenton, VA
Fauquier Co.
United States 		US 17 Business / Lord Fairfax Dr. / US 15-US 17-US 29 (Eastern Bypass) NB Ramps
(38.68557, -77.78602) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
0.0000 		Freeway Ramps (Grade-Separated)
Single-Lane 		2020 http://www.virginiadot.org/projects/culpeper/warrentoninterchange.asp