City,
State County Country |
Intersection (Lat, Lng) |
Type Status |
Control Type / Other Control Type | Approaches / Driveways / ICD (m) |
Functional Class / LaneType |
Year Completed | Comments |
---|---|---|---|---|---|---|---|
Almendralejo,
Estremadura Badajoz Spain |
N-630 / Calle Ortega y Muñoz / Calle las Encinas (38.67584, -6.39247) |
Roundabout Existing |
All-Way Yield Unknown |
4 Approaches 1 Driveways |
Other (At-Grade) Multilane (2 Lane, unspecified) |
||
North Highlands,
CA Sacramento Co. United States |
Freedom Park Dr. / 34th St. / Dudley Blvd. (38.67588, -121.38752) |
Roundabout Existing |
All-Way Yield None |
4 Approaches 0 Driveways 36.5760 |
Other (At-Grade) Single-Lane |
2012 | |
North Highlands,
CA Sacramento Co. United States |
Freedom Park Dr. / 32nd St. (38.67592, -121.39216) |
Roundabout Existing |
All-Way Yield None |
4 Approaches 0 Driveways 36.5760 |
Other (At-Grade) Single-Lane |
2012 | |
Piedade,
Setúbal Almada Portugal |
Avenida Dom Nuno Álvares Pereira / Avenida Bento Gonçalves / Rua Direita / Rua Caetano Maria Batalha (38.67617, -9.16488) |
Roundabout Existing |
All-Way Yield At-grade Rail Crossing Signals/Gates (controlling circulatory roadway only) |
4 Approaches 0 Driveways |
Other (At-Grade) Multilane (2 Lane, unspecified) |
Pedestrian signals and signals for light rail crossing through central island. | |
Sacramento,
CA Sacramento Co. United States |
Crossfield Dr. / Meister Way / Airport Blvd. NB Ramps (38.67890, -121.58937) |
Roundabout Existing |
All-Way Yield None |
4 Approaches 0 Driveways 51.8160 |
Freeway Ramps (Grade-Separated) Multilane (2 Lane, 2x1 max) |
2023 | Serves Sacramento International Airport. https://sacramento.aero/scas/about/news-and-events/upcoming-smf-construction-plan-ahead-for-improved-travel-experience |
Sacramento,
CA Sacramento Co. United States |
Crossfield Dr. / Lindbergh Dr. / Airport Blvd. SB Ramps (38.67892, -121.59240) |
Roundabout Existing |
All-Way Yield None |
4 Approaches 0 Driveways 48.7680 |
Freeway Ramps (Grade-Separated) Single-Lane |
2023 | Serves Sacramento International Airport. https://sacramento.aero/scas/about/news-and-events/upcoming-smf-construction-plan-ahead-for-improved-travel-experience |
Madison,
CA Yolo Co. United States |
SR 16 / CR 89 (38.68204, -121.96678) |
Roundabout Existing |
All-Way Yield None |
4 Approaches 0 Driveways |
Other (At-Grade) Single-Lane |
2019 | |
Sacramento,
CA Sacramento Co. United States |
Northborough Dr. / Heritage Park Ln. / Rose Arbor Dr. (38.68221, -121.51550) |
Roundabout Existing |
All-Way Yield None |
4 Approaches 0 Driveways 23.3081 |
Other (At-Grade) Single-Lane |
2002 | ICD estimated from Google Maps linework. |
Almendralejo,
Estremadura Badajoz Spain |
N-630 / Calle de Santa Marta (38.68229, -6.39858) |
Roundabout Existing |
All-Way Yield Unknown |
3 Approaches 0 Driveways |
Other (At-Grade) Multilane (2 Lane, unspecified) |
||
Woodbridge,
VA Prince William Co. United States |
Greatbridge Rd. / Mays Quarter Rd. (38.68304, -77.34802) |
Roundabout Existing |
All-Way Yield None |
3 Approaches 0 Driveways 44.7509 |
Other (At-Grade) Single-Lane |
1998 | Year Completed estimated (1994-2002). ICD estimated from Google Maps linework. |
Citrus Heights,
CA Sacramento Co. United States |
Stock Ranch Rd. / Woodside Dr. / Fountain Square Dr. (38.68438, -121.29649) |
Roundabout Existing |
All-Way Yield None |
4 Approaches 0 Driveways 38.1000 |
Other (At-Grade) Single-Lane |
2004 | Bike lanes striped within circulatory roadway. Year Completed estimated (2003-2004). |
Woodbridge,
VA Prince William Co. United States |
Mays Quarter Rd. / Dorset Dr. / Weejun Loop (38.68551, -77.34407) |
Roundabout Existing |
All-Way Yield None |
4 Approaches 0 Driveways 36.3589 |
Other (At-Grade) Single-Lane |
2014 | ICD estimated from Google Maps linework. |
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 |
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). |
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. | |
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) |
||
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 |
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. |
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 |
||
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) |
||
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. |
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. |
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. | |
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 |
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) |
||
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. |
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 |
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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) |
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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 |
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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. |