Roundabouts Database Index

29804 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
Portland, OR Multnomah Co. United States	NW 25th Ave. / NW Marshall St. (45.53040, -122.70270)	Traffic Calming Circle Existing	One-Way/Two-Way Stop None	4 Approaches 0 Driveways 62.7498	Other (At-Grade) Single-Lane	1988	Completed 9/30/1988. ICD estimated from Google Maps linework.
Provo, UT Utah Co. United States	Riverside Ave. / W 1720 North (40.25703, -111.66810)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 21.8749	Other (At-Grade) Single-Lane	2000	ICD estimated from Google Maps linework.
Columbia, MD Howard Co. United States	Cradlerock Way / Homespun Dr. (39.19095, -76.83787)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 22.2158	Other (At-Grade) Single-Lane	2001	Completed May 21, 2001. Previously controlled by one-way stop Functional Class: Collector ICD estimated from Google Maps linework.
Malta, NY Saratoga Co. United States	Rte 67 (Dunning St.) / Kelch Dr. / Blacksmith Dr. (Malta Commons) (42.97068, -73.79804)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 50.2920	Other (At-Grade) Multilane (2 Lane, 2x2 max)	2006	Part of a series of 5 roundabouts.
Loveland, CO Larimer Co. United States	McWhinney Blvd. / Hahns Peak Dr. / Grays Peak Dr. (40.41048, -105.01140)	Roundabout Existing	All-Way Yield None	5 Approaches 0 Driveways 71.6280	Other (At-Grade) Multilane (2 Lane, unspecified)	2002
Eugene, OR Lane Co. United States	Barger Dr. / Green Hill Rd. (44.08470, -123.20830)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 32.6002	Other (At-Grade) Single-Lane	1999	ICD estimated from Google Maps linework.
Lawrence, KS Douglas Co. United States	Monterey Way / Harvard Rd. (38.96400, -95.28833)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 15.7869	Other (At-Grade) Single-Lane	1999	Built as part of reconstrction of Monterey Way. Designed as part of City/State Safety Improvement Project. ICD estimated from Google Maps linework.
Lawrence, KS Douglas Co. United States	West Campus Rd. / Jayhawk Blvd. / Crescent Rd. (38.95905, -95.25105)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 29.7185	Other (At-Grade) Single-Lane	2013	Original circle built c. 1945, rebuilt 2013 as part of reconstruction of Jayhawk Boulevard. Encircles Chi Omega fountain. Functional Class: Collector ICD estimated from Google Maps linework.
Coventry, CT Tolland Co. United States	Daly Rd. / South St. (41.76721, -72.33688)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 24.9424	Other (At-Grade) Single-Lane	2004	ICD estimated from Google Maps linework.
Fairmont, WV Marion Co. United States	WV 273 (State St.) / Haymond St. (39.47601, -80.13599)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 54.8640	Other (At-Grade) Multilane (2 Lane, unspecified)	2010	Detectable warning surfaces along entire length of narrow pedestrian ramp.
East Lansing, MI Ingham Co. United States	Bogue St. / Shaw Ln. (42.72575, -84.47185)	Roundabout Removed	All-Way Yield None	4 Approaches 0 Driveways 60.9600	Other (At-Grade) Multilane (2 Lane, unspecified)	2014	Roundabout built in 2000, removal date estimated (2013-2015).
Hartland, MI Livingston Co. United States	Hartland Rd. / Rovey Dr. (42.63682, -83.74883)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 38.6594	Other (At-Grade) Single-Lane	2009	ICD estimated from Google Maps linework.
Ottawa, ON City of Ottawa Canada	Bayview Rd. / Slidell St. / Burnside Ave. (45.40958, -75.72880)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 33.5384	Other (At-Grade) Single-Lane	2010	Functional Class: Collector ICD estimated from Google Maps linework.
Davis, CA Yolo Co. United States	Anderson Rd. / Alvarado Ave. (38.56210, -121.75850)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 25.2149	Other (At-Grade) Single-Lane	1997	Moderate to high pedestrian and bicycle volume. Located in residential area frequented by commuters to University of California at Davis. ICD estimated from Google Maps linework.
Gorham, ME Cumberland Co. United States	US 202 / Rte. 4 / Rte. 237 (43.72846, -70.42525)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 25.0285	Other (At-Grade) Single-Lane	1997	Previously controlled by two-way stop ICD estimated from Google Maps linework.
(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.
Bel Air, MD Harford Co. United States	Tollgate Rd. / Marketplace Dr. (39.52092, -76.35262)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 28.5602	Other (At-Grade) Single-Lane	1996	Three leg, off-set roundabout - off-set due to lack of r/w on top side of Functional Class: Collector ICD estimated from Google Maps linework.
Dawsonville, GA Dawson Co. United States	SR 9E (Lumpkin Campground Rd.) / SR 318 (Dawson Forrest Rd.) (34.35427, -84.05168)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 42.6720	Other (At-Grade) Single-Lane	2006
Oakwood, GA Hall Co. United States	Landrum Education Dr. / Frontage Rd. / Mathis Dr. (34.23434, -83.86434)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 35.0520	Other (At-Grade) Single-Lane	2007	Gainesville College.
Goshen, CT Litchfield Co. United States	Rte. 4 / Rte. 63 (41.83185, -73.22539)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 25.9080	Other (At-Grade) Single-Lane	2002	Painted splitter islands.
Rochester, MI Oakland Co. United States	Tienken Rd. / Runyon Rd. / Washington Rd. (42.69743, -83.11135)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 43.0105	Other (At-Grade) Single-Lane	1999	Total cost: $353,000. Completed July 1999. Functional Class: Arterial ICD estimated from Google Maps linework.
Bend, OR Deschutes Co. United States	Brookswood Blvd. / Powers Rd. (44.02886, -121.32130)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 29.1961	Other (At-Grade) Single-Lane	2013	ICD estimated from Google Maps linework.
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
New London, CT New London Co. United States	Shaw St. / Howard St. / Willets Ave. (41.34284, -72.09972)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 34.9700	Other (At-Grade) Single-Lane	2000	ICD estimated from Google Maps linework.
Truckee, CA Nevada Co. United States	Brockway Rd. / Martis Valley Rd. (39.32135, -120.16269)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 39.6240	Other (At-Grade) Single-Lane	2006
Loveland, CO Larimer Co. United States	Plum Creek Dr. / Piney River Dr. (40.41253, -105.01850)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 29.0994	Other (At-Grade) Single-Lane	2001	Functional Class: Local ICD estimated from Google Maps linework.
Columbia, MD Howard Co. United States	Golden Straw Ln. / Davis Rd. (39.21597, -76.81084)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways	Other (At-Grade) Single-lane w/ Traversable Central Island	2000	Completed April 28, 2000. Pedestrian ramps into circulatory roadway.
(unincorporated), OR Washington Co. United States	NW Verboort Rd. / Cornelius-Shefflin Rd. (45.55150, -123.06410)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 52.6900	Other (At-Grade) Single-Lane	2003	Reverse curves on approaches. Designed as multilane with striped-out inner circulating and entry/exit lanes. ICD estimated from Google Maps linework.
Lawrence, KS Douglas Co. United States	24th Pl. / Inverness Dr. (38.94105, -95.29808)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 25.0814	Other (At-Grade) Single-Lane	2001	Approved by Commission over neighborhood opposition. Was a 3 leg intersection prior to construction. Near Sunflower Elementary School and Southwest Junior High School. Functional Class: Collector ICD estimated from Google Maps linework.
Lawrence, KS Douglas Co. United States	24th Pl. / Crossgate Dr. (38.94130, -95.28875)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 26.9392	Other (At-Grade) Single-Lane	2001	Planned in connection with extention of 24th Place Functional Class: Collector ICD estimated from Google Maps linework.
Greeley, CO Weld Co. United States	Promontory Cir. / W 11th St. (40.41889, -104.84990)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 44.1960	Other (At-Grade) Multilane (2 Lane, 2x2 max)	2004	4 roundabouts in series; 6 in vicinity.
Greenwich, CT Fairfield Co. United States	King St. / Rye Lake Ave. (41.07508, -73.70280)	Roundabout Removed	All-Way Yield None	4 Approaches 0 Driveways	Other (At-Grade) Single-Lane	2006	Temporary roundabout installed May 12, 2004. Functional Class: Local.
Madison, CT New Haven Co. United States	Rte. 80 / Rte. 79 (41.35976, -72.63807)	Rotary Existing	All-Way Yield None	4 Approaches 0 Driveways 98.6077	Other (At-Grade) Single-Lane		Old traffic circle converted to yield on entry. 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.
University Place, WA Pierce Co. United States	Grandview Dr. / Olympic Blvd. (47.22188, -122.55790)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 25.1454	Other (At-Grade) Single-Lane	1997	Curtis High School and Curtis Junior High School on NE corner of roundabout. Opened August 1997. Functional Class: Arterial ICD estimated from Google Maps linework.
Kennewick, WA Benton Co. United States	27th Ave. / Union St. / Southridge Blvd / W Creekstone Dr. (46.18497, -119.18040)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 40.5168	Other (At-Grade) Single-Lane	2000	Completed August 25, 2000. Right-turn bypass on WB approach. Was 3-leg intersection; fourth leg added to west as part of project. Previously controlled by two-way stop Functional Class: Arterial ICD estimated from Google Maps linework.
Seymour, CT New Haven Co. United States	Rte. 188 / Rte. 334 (Great Hill Rd.) / Holbrook Rd. (41.37857, -73.12669)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 35.8466	Other (At-Grade) Single-Lane	2016	Previous traffic circle was upgraded to modern roundabout design guidelines. 21442
Scottsdale, AZ Maricopa Co. United States	N. Marshall Way / E. 5th Ave. (33.49802, -111.92900)	Other Existing	All-Way Stop None	3 Approaches 0 Driveways 23.9030	Other (At-Grade) Single-Lane		Stop controlled. ICD estimated from Google Maps linework.
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
Bisbee, AZ Cochise Co. United States	Bisbee Rd. / SR 80 / SR 92 (31.42830, -109.89230)	Rotary Existing	All-Way Yield None	4 Approaches 0 Driveways 104.9686	Other (At-Grade) Single-Lane		ICD estimated from Google Maps linework.
Kingston, NY Ulster Co. United States	I-587 / Rte 28 / I-87 Ramps / Washington Ave. (41.94362, -74.02840)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 60.9600	Freeway Ramps (Grade-Separated) Multilane (2 Lane, 2x2 max)	2000	A 600 ft diameter traffic circle was replaced by 200 ft diameter roundabout. At Exit 19 from I-87. I-587 terminates in roundabout.
Windsor, CT Hartford Co. United States	Hayden Station Rd. / Lancaster Dr. / Center St. (41.89280, -72.63409)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 24.8935	Other (At-Grade) Single-Lane	1998	Functional Class: Collector. Year Completed estimated (1994-2003). ICD estimated from Google Maps linework.
Manhattan, KS Riley Co. United States	Gary Ave. / Candlewood Dr. (39.21087, -96.61885)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 21.2841	Other (At-Grade) Single-Lane	1997	Considered to be the First Modern Roundabout in the State of Kansas. Previously controlled by two-way stop Functional Class: Collector ICD estimated from Google Maps linework.
Oviedo, FL Seminole Co. United States	Franklin St. / Geneva Dr. / Division St. (28.67359, -81.20439)	Roundabout Existing	All-Way Yield None	5 Approaches 0 Driveways 34.5795	Other (At-Grade) Single-Lane	2006	Website: http://www.cityofoviedo.net/files/Roundabouts.pdf ICD estimated from Google Maps linework.
Windsor, CT Hartford Co. United States	Hayden Station Rd. / Pond Rd. (41.89371, -72.64065)	Roundabout Existing	All-Way Yield None	3 Approaches 1 Driveways 24.0041	Other (At-Grade) Single-Lane	1998	Functional Class: Collector. Year Completed estimated (1992-2003). ICD estimated from Google Maps linework.
Las Vegas (Summerlin), NV Clark Co. United States	Vista Run Dr. / Park Vista Dr. (36.17820, -115.34610)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 46.2741	Other (At-Grade) Single-Lane	1995	Year completed estimated (1990-1999) ICD estimated from Google Maps linework.
Windsor, CT Hartford Co. United States	Prospect Hill Rd. / Lang Rd. (41.89153, -72.69762)	Roundabout Existing	All-Way Yield None	3 Approaches 1 Driveways 25.7830	Other (At-Grade) Single-Lane	1998	Located at entrance to industrial park. Year Completed estimated (1992-2004). ICD estimated from Google Maps linework.
Litchfield Park, AZ Maricopa Co. United States	W. Palmilla Blvd. / W. Alvarado Dr. (33.46978, -112.35190)	Traffic Calming Circle Existing	Unknown None	4 Approaches 0 Driveways 23.9107	Other (At-Grade) Single-Lane		ICD estimated from Google Maps linework.
Moses Lake, WA Grant Co. United States	Yonezawa Blvd. / S. Division St. / W. Belmont Ave. (47.10438, -119.27860)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 43.0857	Other (At-Grade) Single-Lane	2001	Pedestrian crossing has z-shape, with exit closer to roundabout than entrance. Part of series of 3 roundabouts. Previously controlled by one-way stop Functional Class: Collector ICD estimated from Google Maps linework.
Boynton Beach, FL Palm Beach Co. United States	Hagen Ranch Rd. / Majestic Palm Dr. / Palm Isles Dr. (26.53700, -80.16410)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 38.4660	Other (At-Grade) Single-Lane	2004	ICD estimated from Google Maps linework.
Peoria, AZ Maricopa Co. United States	N Sunrise Point / Sunset Point (33.75294, -112.33084)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 80.7720	Other (At-Grade) Single-Lane	2004
Greeley, CO Weld Co. United States	Promontory Cir. / W. 16th St. (40.41505, -104.85090)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 42.6720	Other (At-Grade) Multilane (2 Lane, 2x2 max)	2004	4 roundabouts in series; 6 in vicinity.
Greeley, CO Weld Co. United States	Promontory Cir. / Con Agra Dr. (40.41138, -104.85200)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 42.6720	Other (At-Grade) Multilane (2 Lane, 2x2 max)	2004	4 roundabouts in series; 6 in vicinity.
Boynton Beach, FL Palm Beach Co. United States	Hagen Ranch Rd. / Treviso Ln. (26.54100, -80.16380)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 25.6431	Other (At-Grade) Single-Lane	1999	ICD estimated from Google Maps linework.
Greeley, CO Weld Co. United States	Promontory Cir. / W 18th St. (40.40869, -104.85120)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 42.6717	Other (At-Grade) Multilane (2 Lane, 2x2 max)	2004	4 roundabouts in series; 6 in vicinity.
Phoenix, AZ Maricopa Co. United States	23rd Ave. / W. Osborn Rd. (33.48775, -112.10840)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 15.9372	Other (At-Grade) Single-Lane	2005	Small roundabout. ICD estimated from Google Maps linework.
Greeley, CO Weld Co. United States	W 18th St. / Promontory Cir. / (parking) (40.41203, -104.85840)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 42.6720	Other (At-Grade) Multilane (2 Lane, 2x2 max)	2004	Part of 6 in vicinity.
Phoenix, AZ Maricopa Co. United States	E. Mountain View Rd. / N. Central Ave. (33.57510, -112.07360)	Traffic Calming Circle Existing	All-Way Yield None	0 Approaches 0 Driveways 16.9162	Other (At-Grade) Single-Lane	2006	Mini-roundabout ICD estimated from Google Maps linework.
Manhattan, KS Riley Co. United States	Kimball Ave. / Grand Mere Pkwy. (39.20168, -96.63786)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 32.3931	Other (At-Grade) Single-Lane	2000	Completed 3/2000. Built as part of new Colbert Hills Golf Course. Fatal crash January 31, 2010. 11861-05. Functional Class: Collector ICD estimated from Google Maps linework.
Lawrence, KS Douglas Co. United States	Sunflower Park Rd / Inverness Dr (38.93745, -95.29810)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 111.4785	Other (At-Grade) Single-Lane	2001	Next to Sunflower Elementary School and Southwest Junior High School. Functional Class: Collector ICD estimated from Google Maps linework.
Greeley, CO Weld Co. United States	Promontory Cir. / W 16th St. / (parking) (40.41524, -104.85540)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 42.6720	Other (At-Grade) Multilane (2 Lane, 2x2 max)	2004	Part of 6 in vicinity.
Hutchinson, KS Reno Co. United States	23rd Ave. / Severence St. (38.07940, -97.91340)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 34.7846	Other (At-Grade) Single-Lane	2000	Near the state fairgrounds in Hutchinson Previously controlled by two-way stop Functional Class: Collector ICD estimated from Google Maps linework.
Garnett, KS Harvey Co. United States	US 59 / US 169 (38.25832, -95.24861)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 46.8910	Other (At-Grade) Single-Lane	2006	None. Previously controlled by one-way stop Functional Class: Arterial ICD estimated from Google Maps linework.
Newton, KS Harvey Co. United States	Broadway St. / I-135 Ramps (38.05000, -97.32250)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 45.1441	Freeway Ramps (Grade-Separated) Single-Lane	2003	Single-point interchange. Near roundabout interchange at I-135/1st Street. Roundabout completed January 2002, ramps from I-135 to the roundabout reopened March 2002. Eliptical structure incorporating both NB and SB ramps. Previously controlled by one-way stop ICD estimated from Google Maps linework.
Lenexa, KS Johnson Co. United States	Prairie Star Pkwy / Montecello Rd. (38.95251, -94.84398)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 52.0123	Other (At-Grade) Multilane (2 Lane, unspecified)	2002	Functional Class: Arterial ICD estimated from Google Maps linework.
Paola, KS Miami Co. United States	K-68 / Old Kansas City Rd. / Hedge Ln. (38.62133, -94.85551)	Roundabout Existing	All-Way Yield None	5 Approaches 0 Driveways 44.7895	Other (At-Grade) Single-Lane	2001	First roundabout on rural, high-speed facility in Kansas. Functional Class: Arterial ICD estimated from Google Maps linework.
Topeka, KS Shawnee Co. United States	46th St. / US 75 Ramps (39.12934, -95.71959)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 124.9680	Freeway Ramps (Grade-Separated) Single-Lane	2002	Roundabout under structure as part of single-point interchange. Elliptical shaped. ICD = 410 ft x 270 ft. Original intersection was at grade. Completed November 2002.
Phoenix, AZ Maricopa Co. United States	N. 43rd St. / E. Stanford Dr. (33.51700, -111.98930)	Traffic Calming Circle Existing	All-Way Yield None	0 Approaches 0 Driveways 46.7997	Other (At-Grade) Single-Lane	2005	Mini-roundabout ICD estimated from Google Maps linework.
Quebec, QC Capitale-Nationale Region Canada	Rue de la Rive-Boisee N / Rue du Baumier (46.83577, -71.32956)	Other Existing	All-Way Yield None	3 Approaches 0 Driveways 40.0000	Other (At-Grade) Single-Lane		No splitter islands. ICD estimated from Google Maps linework.
Alpine, UT Utah Co. United States	Canyon Crest Rd. / 200 West (40.45012, -111.78150)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 36.3540	Other (At-Grade) Single-Lane	2004	ICD estimated from Google Maps linework.
Green Bay, WI Brown Co. United States	Mason St. (STH 32-STH 54) / S. Taylor St. (44.52414, -88.07916)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 43.4266	Other (At-Grade) Multilane (2 Lane, unspecified)	2012	Series of 3 roundabouts. Opened August 31, 2012. ICD estimated from Google Maps linework.
Green Bay, WI Brown Co. United States	Shawano Ave. (STH 29) / Taylor St. (44.53461, -88.07319)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 49.3783	Other (At-Grade) Multilane (3+ Lane)	2011	Opened September 2011. ICD estimated from Google Maps linework.
Draper, UT Salt Lake Co. United States	1300 E / Pioneer Rd. (40.52518, -111.85340)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 37.2210	Other (At-Grade) Multilane (2 Lane, 2x1 max)	2001	ICD estimated from Google Maps linework. Constructed as single-lane in 2001. Updated to 2x1 in 2023. https://www.draperjournal.com/2023/09/07/464782/roundabout-reopens-early-with-revised-traffic-pattern
Orem, UT Utah Co. United States	1200 South / 400 West (40.27531, -111.70480)	Roundabout Existing	All-Way Yield None	5 Approaches 0 Driveways 30.9811	Other (At-Grade) Single-Lane	2000	ICD estimated from Google Maps linework.
Draper, UT Salt Lake Co. United States	300 East / 12200 South (40.52863, -111.88180)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 37.2193	Other (At-Grade) Single-Lane	2001	ICD estimated from Google Maps linework.
Provo, UT Utah Co. United States	200 West (Freedom Blvd.) / 920 South (40.22177, -111.66230)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 25.5341	Other (At-Grade) Single-Lane	2000	ICD estimated from Google Maps linework.
Las Vegas (Summerlin), NV Clark Co. United States	Town Center Dr. / Canyon Run Dr. / Banburry Cross Dr. (36.18080, -115.31370)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 54.8640	Other (At-Grade) Multilane (2 Lane, unspecified)	1995	Completed March 1995. Modified 2003 to reduce from three-lane entries to two-lane entries with add-lane right-turn bypasses on all legs. 21442
Las Vegas (Summerlin), NV Clark Co. United States	Desert Primrose Ln. / Desert Marigold Ln. / Blue Willow Ln. (36.14060, -115.32090)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 40.5093	Other (At-Grade) Multilane (2 Lane, unspecified)	1999	Functional Class: Collector ICD estimated from Google Maps linework.
Las Vegas (Summerlin), NV Clark Co. United States	Desert Primrose Ln. / Spotted Leaf Ln. / Pavillion Center Dr. (36.14070, -115.33120)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 41.4737	Other (At-Grade) Multilane (2 Lane, unspecified)	1999	Functional Class: Collector ICD estimated from Google Maps linework.
Las Vegas (Summerlin), NV Clark Co. United States	Havenwood Ave. / Spotted Leaf Ln. / Golden Willow (36.13300, -115.33040)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 37.6194	Other (At-Grade) Multilane (2 Lane, unspecified)	1999	Functional Class: Collector ICD estimated from Google Maps linework.
Las Vegas (Summerlin), NV Clark Co. United States	Havenwood Ave. / Desert Marigold Ln. / Navajo Willow Ln. (36.13360, -115.32110)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 39.5483	Other (At-Grade) Multilane (2 Lane, unspecified)	2000	Functional Class: Collector. Year Completed estimated (1999-2002). ICD estimated from Google Maps linework.
Maplewood, MN Ramsey Co. United States	Kennard St. / Legacy Pkwy. (45.03317, -93.03062)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 37.1373	Other (At-Grade) Single-Lane	2004	Site has RT pavement arrows at entrance line. ICD estimated from Google Maps linework.
Phoenix, AZ Maricopa Co. United States	Aviano Way / (unknown) (33.68941, -111.99350)	Rotary Existing	All-Way Yield None	0 Approaches 0 Driveways 79.4999	Other (At-Grade) Single-Lane		Mini-roundabout. Completed 2005. ICD estimated from Google Maps linework.
Topeka, KS Shawnee Co. United States	SW 29th St. / Urish Rd. (39.01446, -95.78102)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 48.7680	Other (At-Grade) Single-Lane	2001	Completed July 2001 as single-lane roundabout. Retail shopping center on SW corner. Converted to partial double-lane roundabout 2010. 21442
Urbana, MD Frederick Co. United States	MD 80 / Sugarloaf Pkwy. / Bennett Creek Blvd. (39.32467, -77.34974)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 52.6619	Other (At-Grade) Multilane (2 Lane, unspecified)	2000	Rural ICD estimated from Google Maps linework.
Bel Air, MD Harford Co. United States	MD 7 / Holly Oaks Drive (39.48848, -76.21669)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 34.1039	Other (At-Grade) Single-Lane	1999	Opened September 1999. ICD estimated from Google Maps linework.
North Harford, MD Harford Co. United States	MD 165 / MD 24 (39.67220, -76.40930)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 32.1750	Other (At-Grade) Single-Lane	2000	Rural Previously controlled by two-way stop ICD estimated from Google Maps linework.
Scottsdale, AZ Maricopa Co. United States	N. 104th St. / E. Cholla St. (33.58976, -111.85660)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 21.8878	Other (At-Grade) Single-Lane	2005	ICD estimated from Google Maps linework.
Scaggsville, MD Howard Co. United States	MD 216 / US 29 SB Ramps (39.14562, -76.90418)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 53.7228	Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified)	2001	Series of 4 roundabouts. ICD estimated from Google Maps linework.
Scaggsville, MD Howard Co. United States	MD 216 / US 29 NB Ramps / Ice Crystal Dr. (39.14476, -76.89799)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 53.7234	Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified)	2001	Series of 4 roundabouts. ICD estimated from Google Maps linework.
Millington, MD Kent Co. United States	MD 291 / US 301 SB Ramps (39.26463, -75.86641)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 31.4393	Freeway Ramps (Grade-Separated) Single-Lane	1999	Opened August 1999. ICD estimated from Google Maps linework.
Millington, MD Kent Co. United States	MD 291 / US 301 NB Ramps (39.26386, -75.86260)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 28.6656	Freeway Ramps (Grade-Separated) Single-Lane	1999	Opened August 1999. ICD estimated from Google Maps linework.
Scottsdale, AZ Maricopa Co. United States	N 70th Pl. / E Chaparral Rd. (33.50954, -111.92900)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 27.4320	Other (At-Grade) Single-Lane	2016	A traffic calming circle was completed in 2002 on what was otherwise a TWSC intersection. Roundabout constructed in 2016. On south leg there is no entry into the roundabout but instead a yield-controlled right-turn bypass lane to prevent northbound-to-westbound cut-through traffic.
Oak Grove, MD Prince Georges Co. United States	MD 193 (Watkins Park Dr.) / Oak Grove Rd. (38.87737, -76.78108)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 38.1207	Other (At-Grade) Single-Lane	2001	ICD estimated from Google Maps linework.
Temple Hills, MD Prince Georges Co. United States	MD 637 (Naylor Rd.) / Good Hope Ave. (38.84922, -76.95655)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 31.6248	Other (At-Grade) Single-Lane	2001	ICD estimated from Google Maps linework.
Temple Hills, MD Prince Georges Co. United States	MD 637 (Naylor Rd.) / Oxon Run Dr. (38.84986, -76.95789)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 34.4150	Other (At-Grade) Single-Lane	2001	ICD estimated from Google Maps linework.
Castle Marina, MD Queen Annes Co. United States	MD 18 / Castle Marina Rd. (38.97871, -76.28938)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 28.7819	Other (At-Grade) Single-Lane	1999	Previously controlled by two-way stop ICD estimated from Google Maps linework.
Kennewick, WA Benton Co. United States	Columbia Park Drive #1 (46.22221, -119.15110)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 38.8367	Other (At-Grade) Single-Lane	2001	Completed February 2001. Functional Class: Local ICD estimated from Google Maps linework.
Kennewick, WA Benton Co. United States	Columbia Park Drive #2 (46.22223, -119.14630)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 54.5366	Other (At-Grade) Single-Lane	2001	Completed February 2001 Functional Class: Local ICD estimated from Google Maps linework.