Roundabouts Database Index

28798 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
Kuching, Sarawak Bahagian Kuching Malaysia	Jalan Demak Laut / (unknown) (1.59627, 110.40727)	Rotary Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 95.0000	Other (At-Grade) Multilane (2 Lane, 2x2 max)		Concentric striped circulatory roadway.
Kuching, Sarawak Bahagian Kuching Malaysia	Jalan Bako (1.59957, 110.44135)	Rotary Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 200.0000	Other (At-Grade) Multilane (2 Lane, 2x2 max)
Timnath, CO Larimer Co. United States	Club Dr. / Innovate Pl. (40.52134, -104.95463)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 53.3400	Other (At-Grade) Multilane (2 Lane, 2x2 max)	2008	Year Completed estimated (2006-2010).
Berthoud, CO Weld Co. United States	CO 56 / I-25 NB Ramps (40.30632, -104.97848)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 0.0000	Freeway Ramps (Grade-Separated) Multilane (2 Lane, 2x2 max)	2021	https://www.codot.gov/news/2021/november-2021/co56-i25-reopens-early
Stuart, FL Martin Co. United States	NW Britt Rd. / NW Fresco Way / NW Goldenrod Rd. (27.23781, -80.26708)	Other Existing	Other None	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Multilane (2 Lane, 2x2 max)		Concentric striped circulatory roadway. Stop control on south leg.
Thornton, CO Adams Co. United States	Grant St. / E 146th Ave. / (parking) (39.96090, -104.98184)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 60.9600	Other (At-Grade) Multilane (2 Lane, 2x2 max)	2018	Year Completed estimated (2018-2019).
Thornton, CO Adams Co. United States	Grant St. / E 143rd Pl. (39.95485, -104.98191)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 60.9600	Other (At-Grade) Multilane (2 Lane, 2x2 max)	2013	Opened with north and west legs 2013. South and east legs added 2015.
Macomb, MI Macomb Co. United States	25 Mile Rd. / Romeo Plank Rd. / Garfield Rd. (42.70077, -82.95901)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 42.6720	Other (At-Grade) Multilane (2 Lane, 2x2 max)	2022	Year Completed estimated (2021-2022).
Bend, OR Deschutes Co. United States	US 20 / Cooley Rd. (44.10922, -121.31043)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Multilane (2 Lane, 2x2 max)	2023	Opened May 26, 2023 during construction as single-lane roundabout but designed to be a multilane roundabout.
St Albert, AB Division 11 Canada	Hwy 633 (Villeneuve Rd.) / (parking) (53.65791, -113.63362)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 35.0000	Other (At-Grade) Multilane (2 Lane, 2x2 max)	2023	https://stalbert.ca/dev/construction/transportation/villeneuve/
Rochester, MN Olmsted Co. United States	CSAH 44 (60th Ave. NW) / CSAH 4 (Valleyhigh Rd. NW) (44.05795, -92.55841)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 48.7680	Other (At-Grade) Multilane (2 Lane, 2x2 max)	2023	https://www.olmstedcounty.gov/post/csah-4-valley-high-road-nw-and-csah-44-reconstruction
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.
Lake Stevens, WA Snohomish Co. United States	SR 9 / Vernon Rd. (48.00461, -122.10670)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Multilane (2 Lane, 2x2 max)	2023	https://www.youtube.com/watch?v=5RRqjCCJjRc
Lake Stevens, WA Snohomish Co. United States	SR 9 / SR 204 (Snohomish Marysville Rd.) / 7th Pl. NE (48.00286, -122.10637)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Multilane (2 Lane, 2x2 max)	2023	https://www.youtube.com/watch?v=5RRqjCCJjRc
Summerville, SC Berkeley Co. United States	Cane Bay Blvd. / Nexton Pkwy. (33.11110, -80.12334)	Roundabout Existing	All-Way Yield Rectangular Rapid Flashing Beacon (RRFB)	3 Approaches 0 Driveways 60.9600	Other (At-Grade) Multilane (2 Lane, 2x2 max)	2007	Y-intersection. Two circulating lanes throughout even though only one double-left movement. Year Completed estimated (2006-2007). Initially constructed with northeast and south legs only. West leg added 2021. https://www.youtube.com/watch?v=lgJ15GyjQv0.
Keene, NH Cheshire Co. United States	Winchester St. / Key Rd. / (parking) (42.92459, -72.28941)	Roundabout Existing	All-Way Yield Rectangular Rapid Flashing Beacon (RRFB)	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Multilane (2 Lane, 2x2 max)	2023	https://www.keenewinchesterstreet.com/
Kitchener, ON Waterloo Canada	Fischer-Hallman Rd. / Bleams Rd. (43.40176, -80.49651)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 60.0000	Other (At-Grade) Multilane (2 Lane, 2x2 max)	2022	Originally constructed as 3x2 roundabout with additional southbound through lane that is marked off by striping and delineators. https://kitchener.ctvnews.ca/kitchener-s-newest-roundabout-closing-for-overnight-paving-1.5935760
Örja kyrkby, Skåne County Landskrona kommun Sweden	Rte 17 (Eslövsvägen) / Vadensjövägen (55.87637, 12.88724)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 55.0000	Other (At-Grade) Multilane (2 Lane, 2x2 max)	2021	Concentric striped circulatory roadway.
Stoughton, WI Dane Co. United States	US 51-STH 138 / US 51 / STH 138 (42.91876, -89.24947)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 54.8640	Other (At-Grade) Multilane (2 Lane, 2x2 max)	2022	https://isthmus.com/events/u-s-highway-51-construction/
Allen, TX Collin Co. United States	Allen Dr. / US 75-TX 36 (North Central Expressway) NB Frontage Rd. (33.11162, -96.67259)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 44.1960	Freeway Ramps (Grade-Separated) Multilane (2 Lane, 2x2 max)	2023	Right-turn-only lane on east leg. No left turn arrows marked on entry.
McKinney, TX Collin Co. United States	CR 161 / CR 124 (33.23289, -96.69748)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 48.7680	Other (At-Grade) Multilane (2 Lane, 2x2 max)	2023
Halmstad, Halland County Halmstads kommun Sweden	Växjövägen / E6 SB Ramps (56.67370, 12.89606)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 39.6240	Freeway Ramps (Grade-Separated) Multilane (2 Lane, 2x2 max)	2015	Concentric striped circulatory roadway.
Halmstad, Halland County Halmstads kommun Sweden	Växjövägen / E6 NB Ramps (56.67432, 12.90147)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 51.8160	Freeway Ramps (Grade-Separated) Multilane (2 Lane, 2x2 max)	2009	Merging right-turn bypass lane on west leg. Concentric striped circulatory roadway.
Halmstad, Halland County Halmstads kommun Sweden	Laholmsvägen / E6 SB Ramps / Gjutaregatan (56.65500, 12.90306)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 60.9600	Freeway Ramps (Grade-Separated) Multilane (2 Lane, 2x2 max)	2020	Previously a T intersection. Changed to 4 leg roundabout in 2020. Concentric striped circulatory roadway.
Dalby, Skåne County Lund Municipality Sweden	Dalbyvägen / Malmövägen (55.66154, 13.33389)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 70.1040	Other (At-Grade) Multilane (2 Lane, 2x2 max)	2005	Concentric striped circulatory roadway. Merging right-turn bypass lane on west leg. Completed as single-lane roundabout before 2005. Converted to two-lane roundabout in 2015-2018.
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).
Sundsvall, Västernorrland County Sundsvall Municipality Sweden	IP rondellen: Universitetsallén / Skolhusallén / Norrmalmsgatan / Tivolivägen (62.39327, 17.30263)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 51.8160	Other (At-Grade) Multilane (2 Lane, 2x2 max)		Completed in 2009 or earlier.
Hudiksvall, Gävleborg County Hudiksvalls kommun Sweden	Södra vägen / Västra vägen / Stationsgatan (61.71721, 17.09503)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 57.9120	Other (At-Grade) Multilane (2 Lane, 2x2 max)		Completed in 2009 or earlier.
Indianapolis, IN Marion Co. United States	Southeastern Ave. / S Rural St. (39.76005, -86.11647)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Multilane (2 Lane, 2x2 max)	2023	Year Completed estimated (2022-2023). https://citybase-cms-prod.s3.amazonaws.com/409ceae3cbb8413497ef98823962c8d0.pdf
London, ON Middlesex Canada	Southdale Rd. W / Colonel Talbot Rd. (42.93669, -81.31730)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways	Other (At-Grade) Multilane (2 Lane, 2x2 max)	2023	https://www.cbc.ca/news/canada/london/new-roundabout-at-colonel-talbot-and-southdale-road-opens-with-1-lane-1.6986818
Henderson, NV Clark Co. United States	E Galleria Dr. / Grand Cadence Dr. (36.07216, -114.98844)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 42.6720	Other (At-Grade) Multilane (2 Lane, 2x2 max)	2023
Prescott, AZ Yavapai Co. United States	AZ 89 / Phippen Trl. / (parking) (34.62254, -112.42595)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 64.0080	Other (At-Grade) Multilane (2 Lane, 2x2 max)	2018	Year Completed estimated (2017-2018).
Meridian, ID Ada Co. United States	E Victory Rd. / S Locust Grove Rd. (43.57574, -116.37461)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Multilane (2 Lane, 2x2 max)	2023	https://www.youtube.com/watch?v=ONrQ1FFqSR8.
Harrisburg, SD Lincoln Co. United States	W Willow St. / Cliff Ave. (43.43157, -96.70767)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Multilane (2 Lane, 2x2 max)	2023	https://www.dakotanewsnow.com/2023/11/14/despite-two-accidents-harrisburg-leaders-see-smooth-transition-new-roundabout/
Oranjestad, Aruba	1A (Avenida Nelson O Oduber) / 8B (Avenida Edgar J Watty Vos) / 1A-1B (L G Smith Blvd.) / J E Irausquin Blvd. (12.53233, -70.05375)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways	Other (At-Grade) Multilane (2 Lane, 2x2 max)		Turbo roundabout.
Pos Chikito, Aruba	Rte 1A-1B / Rte 4A-4B / Balashi (12.47948, -69.97859)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways	Other (At-Grade) Multilane (2 Lane, 2x2 max)		Turbo roundabout.
Oranjestad, Aruba	Rte 1A-1B (Avenida Nelson O Oduber) / Rte 4A-4B (12.54551, -70.05318)	Rotary Existing	All-Way Yield Unknown	4 Approaches 0 Driveways	Other (At-Grade) Multilane (2 Lane, 2x2 max)
Oranjestad, Aruba	Rte 1A-1B / Palm Beach (12.56892, -70.04274)	Rotary Existing	All-Way Yield Unknown	4 Approaches 0 Driveways	Other (At-Grade) Multilane (2 Lane, 2x2 max)
Fort Worth, TX Tarrant Co. United States	Heritage Trace Pkwy. / Harmon Rd. (32.91457, -97.33166)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 54.8640	Other (At-Grade) Multilane (2 Lane, 2x2 max)	2023
Fort Worth, TX Tarrant Co. United States	Harmon Rd. / Golden Triangle Blvd. / E Bonds Ranch Rd. (32.92405, -97.33145)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 54.8640	Other (At-Grade) Multilane (2 Lane, 2x2 max)	2023
Fort Worth, TX Tarrant Co. United States	Harmon Rd. / Presidio Vista Dr. (32.90545, -97.33158)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 48.7680	Other (At-Grade) Multilane (2 Lane, 2x2 max)	2023
Louisville, KY Jefferson Co. United States	James Thornton Way / Wickham Green Way (38.27422, -85.49318)	Other Existing	Uncontrolled None	3 Approaches 0 Driveways 0.0000	Other (At-Grade) Multilane (2 Lane, 2x2 max)	2009	No splitter island on west leg. Concentric striped circulatory roadway.
La Crosse, WI La Crosse Co. United States	US 14-US 61 (South Ave.) / Ward Ave. / East Ave. S (43.78321, -91.22927)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Multilane (2 Lane, 2x2 max)	2023	https://lacrossetribune.com/news/local/new-south-avenue-roundabouts-open-as-17m-reconstruction-project-wraps-up-in-la-crosse/article_9285b35e-87d1-11ee-82a8-4b70d01b1787.html
Lakewood Ranch, FL Manatee Co. United States	Bellefield Way / Hammock Creek Dr. (27.41012, -82.37028)	Roundabout Existing	All-Way Yield None	3 Approaches 1 Driveways 45.7200	Other (At-Grade) Multilane (2 Lane, 2x2 max)	2014
Lakewood Ranch, FL Manatee Co. United States	Castle Park Terrace / Bellefield Way (27.41308, -82.37536)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 41.1480	Other (At-Grade) Multilane (2 Lane, 2x2 max)	2015
Lakewood Ranch, FL Manatee Co. United States	Players Dr. / Bellefield Way (27.40446, -82.37433)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 45.7200	Other (At-Grade) Multilane (2 Lane, 2x2 max)	2014
Saint Lucie West, FL St. Lucie Co. United States	SW Westcliffe Ln. / SW Boardwalk Blvd. (27.27553, -80.45522)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 54.8640	Other (At-Grade) Multilane (2 Lane, 2x2 max)	2021
Saint Lucie West, FL St. Lucie Co. United States	(unknown) / (unknown) (27.23393, -80.42629)	Roundabout Existing	All-Way Yield Unknown	3 Approaches 0 Driveways 50.2920	Other (At-Grade) Multilane (2 Lane, 2x2 max)	2019
Oswego, IL Kendall Co. United States	Wolf Rd. / Harvey Rd. (41.69371, -88.27547)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Multilane (2 Lane, 2x2 max)	2023	https://patch.com/illinois/oswego/reopening-date-set-wolfs-crossing-road-new-roundabout
Green, OH Summit Co. United States	Massillon Rd. / Boettler Rd. / Franks Pkwy. (40.95914, -81.46541)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 48.7680	Other (At-Grade) Multilane (2 Lane, 2x2 max)	2023	https://www.crainscleveland.com/politics-policy/northeast-ohio-communities-embrace-roundabout
Frisco, TX Denton Co. United States	Teel Pkwy. / Fields Pkwy. (33.19990, -96.86863)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 50.2920	Other (At-Grade) Multilane (2 Lane, 2x2 max)	2024
Parrish, FL Manatee Co. United States	Ft Hamer Rd. / 69th St. E (27.57946, -82.43543)	Roundabout Existing	All-Way Yield Rectangular Rapid Flashing Beacon (RRFB)	3 Approaches 0 Driveways 57.9120	Other (At-Grade) Multilane (2 Lane, 2x2 max)	2019	Segment of circulatory roadway between entries and exits. Painted spiral in circulatory roadway.
Wimauma, FL Hillsborough Co. United States	Lagoon Shore Blvd. / Scuba Crest St. / Jacket Chase Dr. (27.70736, -82.32337)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 38.1000	Other (At-Grade) Multilane (2 Lane, 2x2 max)	2017	Concentric striped circulatory roadway except for north exit.
Martinsville, IN Morgan Co. United States	SR 144 / Old SR 37 (39.56651, -86.25263)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 50.2920	Other (At-Grade) Multilane (2 Lane, 2x2 max)	2023
Tulcea, Tulcea Romania	DN22-E87 (Danube Delta) / Strada Mihail Kogălniceanu / Strada Buna Vestire / Strada Progresului (45.17621, 28.80142)	Roundabout Existing	All-Way Yield Other	5 Approaches 0 Driveways	Unknown Multilane (2 Lane, 2x2 max)
Maidenhead, England Windsor And Maidenhead United Kingdom	Braywick Roundabout: A308 / A308 (M) / A330 / Braywick Rd. (51.50423, -0.71170)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways	Other (At-Grade) Multilane (2 Lane, 2x2 max)
Maidenhead, England Windsor And Maidenhead United Kingdom	A4 / B4447 (51.52457, -0.72022)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways	Other (At-Grade) Multilane (2 Lane, 2x2 max)
Maidenhead, England Windsor And Maidenhead United Kingdom	A4 / Forlease Rd. (51.52442, -0.71510)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways	Other (At-Grade) Multilane (2 Lane, 2x2 max)
Burnham, England Bucks United Kingdom	A4 (Bath Rd.) / B3026 (Lake End Rd.) / Lent Rise Rd. (51.52124, -0.66740)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways	Other (At-Grade) Multilane (2 Lane, 2x2 max)
Upton Park, England Slough United Kingdom	Red Cow Roundabout: A412 / B376 (Datchet Rd.) / Upton Court Rd. (51.50308, -0.58904)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways	Other (At-Grade) Multilane (2 Lane, 2x2 max)
Hayes, England Greater London United Kingdom	A437 (Dawley Rd.) / Bourne Ave. (51.50250, -0.43051)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways	Other (At-Grade) Multilane (2 Lane, 2x2 max)
Clewer Village, England Windsor And Maidenhead United Kingdom	A308 (Maidenhead Rd.) / A332 (Royal Windsor Way) Ramps (51.48356, -0.62366)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways	Freeway Ramps (Grade-Separated) Multilane (2 Lane, 2x2 max)
Grand Island, NY Erie Co. United States	South Pkwy. / W River Pkwy. / Beaver Island Park Rd. (42.96786, -78.95880)	Rotary Existing	All-Way Yield Unknown	3 Approaches 0 Driveways 146.3040	Other (At-Grade) Multilane (2 Lane, 2x2 max)
Fort Riley, KS Riley Co. United States	Trooper Dr. / Normandy Dr. (39.10538, -96.81595)	Unknown Existing	Unknown Unknown	3 Approaches 0 Driveways 0.0000	Other (At-Grade) Multilane (2 Lane, 2x2 max)
Lake Worth, FL Palm Beach Co. United States	SR 802 (Lucerne Ave. - Lake Ave.) / A St. (26.61670, -80.06500)	Roundabout Existing	All-Way Yield Pedestrian Signal (red-yellow-green to drivers)	4 Approaches 0 Driveways 57.9120	Other (At-Grade) Multilane (2 Lane, 2x1 max)	2002	ICD = 190 ft x 140 ft.
Vail, CO Eagle Co. United States	Chamonix Rd. / I-70 EB Ramps / South Frontage Rd. (39.62753, -106.42020)	Roundabout Existing	All-Way Yield None	5 Approaches 0 Driveways 45.7200	Freeway Ramps (Grade-Separated) Multilane (2 Lane, 2x1 max)	1997
Winston-Salem, NC Forsyth Co. United States	Salem Rd. / Old Salem Rd. / S. Main St. (36.08215, -80.24125)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 64.0080	Other (At-Grade) Multilane (2 Lane, 2x1 max)	2005	TIP Project U-2926. Right-turn-only lanes on east and west legs.
De Pere, WI Brown Co. United States	Scheuring Rd. (CTH F) / US 41 NB Ramps (44.43074, -88.10989)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 53.3400	Freeway Ramps (Grade-Separated) Multilane (2 Lane, 2x1 max)	2011	Series of 6 roundabouts. Yield-controlled right-turn bypass lane on south leg; merging right-turn bypass lane on east leg. Opened September 2011. Circular central island.
Mount Rainier, MD Prince Georges Co. United States	US 1 / 34th St. / Perry St. (38.93647, -76.96074)	Roundabout Existing	All-Way Yield None	5 Approaches 0 Driveways 41.1480	Other (At-Grade) Multilane (2 Lane, 2x1 max)	2001	Oval shaped. ICD = 135 ft x 115 ft.
Carmel, IN Hamilton Co. United States	Old Meridian St. / Grand Blvd. (39.97366, -86.14984)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 56.3880	Other (At-Grade) Multilane (2 Lane, 2x1 max)	2008	ICD estimated from Google Maps linework.
Las Vegas (Summerlin), NV Clark Co. United States	Village Center Dr. / Meadow Hills Dr. (36.19350, -115.30070)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 59.4360	Other (At-Grade) Multilane (2 Lane, 2x1 max)	1991	Add-lane right-turn bypass lane on north leg.
Prescott, AZ Yavapai Co. United States	SR 89 / Willow Lake Rd. (34.59233, -112.42580)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 64.0080	Other (At-Grade) Multilane (2 Lane, 2x1 max)	2006
Anchorage, AK Anchorage United States	C St. / O'Malley EB Ramps (61.12273, -149.88630)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 53.3400	Freeway Ramps (Grade-Separated) Multilane (2 Lane, 2x1 max)	2006
Anchorage, AK Anchorage United States	C St. / O'Malley WB Ramps (61.12404, -149.88630)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 53.3400	Other (At-Grade) Multilane (2 Lane, 2x1 max)	2006
Scottsdale, AZ Maricopa Co. United States	Princess Blvd. / Princess Dr. (33.64804, -111.91795)	Other Existing	All-Way Yield None	3 Approaches 0 Driveways 64.0077	Other (At-Grade) Multilane (2 Lane, 2x1 max)	1986	Painted spiral next to central island. Completed 1986. Reconfigured in 2007? 21442
Windsor, CO Weld Co. United States	Westgate Dr. / Oakmond St. (40.48121, -104.98870)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 48.7680	Other (At-Grade) Multilane (2 Lane, 2x1 max)	2020	Year Completed estimated (2019-2021). Opened 1999-2004 as single-lane cul-de-sac with south leg and stubs on west and east legs and no evidence of traffic control; the outer portions of circulatory roadway were striped out. Converted to 2x1 roundabout 2019-2021 with addition of north leg.
Erwin, NY Steuben Co. United States	Robert Dann Dr. / Science Center Rd. (42.15936, -77.11082)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 53.3400	Other (At-Grade) Multilane (2 Lane, 2x1 max)	2001	Add-lane right-turn bypass lane on west leg.
Carmel, IN Hamilton Co. United States	Old Meridian St. / 131st (Main) St. (39.97806, -86.14577)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 60.9600	Other (At-Grade) Multilane (2 Lane, 2x1 max)	2007	Painted spirals next to central island. Skewed intersection.
Latham, NY Albany Co. United States	Latham Circle: Rte 2 / Rte 9 (42.74810, -73.76098)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 76.2000	Other (At-Grade) Multilane (2 Lane, 2x1 max)	2002
Federal Way, WA King Co. United States	Weyerhaeuser Way S / S 336th St. (47.30262, -122.29650)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 60.9600	Other (At-Grade) Multilane (2 Lane, 2x1 max)	2004	Opened July 2004. Painted spirals in circulatory roadway to guide all three left turns to outer circulating lane.
Dublin, OH Franklin Co. United States	Muirfield Dr. / Brand Rd. (40.12731, -83.14957)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 73.1520	Other (At-Grade) Multilane (2 Lane, 2x1 max)	2005	Painted spirals next to central island.
Gaithersburg, MD Montgomery Co. United States	Kentlands Blvd. / Main St. (39.12333, -77.23855)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 42.6720	Other (At-Grade) Multilane (2 Lane, 2x1 max)	1994	Year Completed estimated (1993-2002).
Gaithersburg, MD Montgomery Co. United States	Kentlands Blvd. / Market St. (39.12309, -77.23489)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 41.1480	Other (At-Grade) Multilane (2 Lane, 2x1 max)	1994	Year Completed estimated (1993-2002).
Carmel, IN Hamilton Co. United States	W 96th St. / N Spring Mill Rd. (39.92713, -86.16510)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 54.8640	Other (At-Grade) Multilane (2 Lane, 2x1 max)	2006
Hilliard, OH Franklin Co. United States	Britton Pkwy. / Riggins Rd. (40.06493, -83.13857)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 54.8637	Other (At-Grade) Multilane (2 Lane, 2x1 max)	2006	Converted from 2x2 roundabout to a 2x1 roundabout in 2020 by changing the EB and WB thru/right lanes to RT only lanes.
Dublin, OH Franklin Co. United States	Dubln Rd. / Brand Rd. (40.11790, -83.11801)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 42.6720	Other (At-Grade) Multilane (2 Lane, 2x1 max)	2005
Pennington, NJ Mercer Co. United States	Rte. 31 / Blackwell Rd. / Pennington Rd. / Washington Crossing Pennington Rd. (40.30818, -74.78666)	Rotary Existing	Other Unknown	5 Approaches 0 Driveways 216.4080	Other (At-Grade) Multilane (2 Lane, 2x1 max)		Circulating traffic yields to entering traffic on northwest and south legs. ICD = 710 ft x 360 ft.
Noblesville, IN Hamilton Co. United States	Town and Country Blvd. / Mercantile Blvd. (40.03249, -85.99366)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 45.7200	Other (At-Grade) Multilane (2 Lane, 2x1 max)	2008	Painted spirals next to central island. http://www.cityofnoblesville.org/egov/docs/1175265649_138275.pdf
Noblesville, IN Hamilton Co. United States	Hazel Dell Rd. / E 161st St. (40.02205, -86.07061)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 54.8640	Other (At-Grade) Multilane (2 Lane, 2x1 max)	2007	Painted spirals next to central island.
Carmel, IN Hamilton Co. United States	Old Meridian St. / Guilford Ave. (39.98255, -86.14163)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 62.4840	Other (At-Grade) Multilane (2 Lane, 2x1 max)	2008	Right-turn-only lane on southeast leg. Painted spirals next to central island.
Burlington, WA Skagit Co. United States	N Burlington Blvd. / (parking) (48.48060, -122.33544)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 45.7200	Other (At-Grade) Multilane (2 Lane, 2x1 max)	2008	October 2008. Entrance to high school.
Gig Harbor, WA Thurston Co. United States	Harbor Hill Dr. / (parking) (47.35845, -122.60116)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 45.7200	Other (At-Grade) Multilane (2 Lane, 2x1 max)	2008	January 2008.
Olympia, WA Thurston Co. United States	Yelm Hwy SE / Brassfield Rd. SE (47.00372, -122.87309)	Roundabout Existing	All-Way Yield None	3 Approaches 1 Driveways 45.7200	Other (At-Grade) Multilane (2 Lane, 2x1 max)	2011	May 2011.
Snoqualmie, WA King Co. United States	North Bend Way / (Snoqualmie Casino entrance) (47.51671, -121.84100)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 33.5280	Other (At-Grade) Multilane (2 Lane, 2x1 max)	2008	Through bypass lane on west leg. October 2008. ICD estimated from Google Maps linework.
Tumwater, WA Thurston Co. United States	Littlerock Rd. SW / Tumwater Blvd. SW (46.98283, -122.93544)	Roundabout Existing	All-Way Yield None	3 Approaches 1 Driveways 45.7200	Other (At-Grade) Multilane (2 Lane, 2x1 max)	2009	July 2009.
Tumwater, WA Thurston Co. United States	Littlerock Rd. SW / Israel Rd. SW / 70th Ave. SW (46.98554, -122.93236)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 38.1000	Other (At-Grade) Multilane (2 Lane, 2x1 max)	2009	October 2009.
Tumwater, WA Thurston Co. United States	Littlerock Rd. SW / Kingswood Dr. SW (46.99435, -122.92190)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 42.6720	Other (At-Grade) Multilane (2 Lane, 2x1 max)	2010	September 2010.
Walla Walla, WA Walla Walla Co. United States	Myra Rd. / W Pine St. / Heritage Rd. (46.06841, -118.36972)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 56.3880	Other (At-Grade) Multilane (2 Lane, 2x1 max)	2008	December 2008.
Woodinville, WA King Co. United States	SR 202 / NE 145th St. / 148th Ave. NE (47.73271, -122.14220)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 47.2440	Other (At-Grade) Multilane (2 Lane, 2x1 max)	2009	October 2009.
Carmel, IN Hamilton Co. United States	E 126th St. / Keystone Pkwy. NB Ramps (39.97122, -86.11223)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 45.7200	Freeway Ramps (Grade-Separated) Multilane (2 Lane, 2x1 max)	2009	Right-turn-only lane on south leg. Raindrop shaped. Part of tight diamond interchange.