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
Taneytown, MD Carroll Co. United States	MD 140 / MD 832 / Antrim Blvd. (39.64809, -77.15468)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 44.1960	Other (At-Grade) Single-Lane	1996	Completed August 1996. Curbs set for double lane, striped for single outer circulating lane.
Hilton Head, SC Beaufort Co. United States	Whooping Crane Way / Main St. (32.21647, -80.72187)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 44.4598	Other (At-Grade) Single-Lane	1996	Completed February 1996. ICD estimated from Google Maps linework.
Naples, FL Collier Co. United States	7th St. N. / 7th Ave. N. (26.15619, -81.79971)	Traffic Calming Circle Existing	All-Way Yield None	4 Approaches 0 Driveways 22.5125	Other (At-Grade) Single-Lane	1998	Installed for traffic calming. Detailed traffic volume, speed data available. Previously controlled by two-way stop Functional Class: Collector ICD estimated from Google Maps linework.
Naples, FL Collier Co. United States	7th St. N. / 11th Ave. N. (26.15712, -81.79420)	Traffic Calming Circle Existing	All-Way Yield None	4 Approaches 0 Driveways 13.7160	Other (At-Grade) Single-Lane	1996	Installed for traffic calming. Painted splitter islands. Detailed traffic volume, speed data available. ICD estimated from Google Earth.
Naples, FL Collier Co. United States	7th St. N. / 12th Ave. N. (26.15734, -81.79282)	Traffic Calming Circle Existing	All-Way Yield None	4 Approaches 0 Driveways 13.7160	Other (At-Grade) Single-Lane	1996	Installed for traffic calming. Detailed traffic volume, speed data available. ICD estimated from Google Earth.
(unincorporated), FL Palm Beach Co. United States	Lakes at Boca Raton / Cain Blvd. (26.39603, -80.21160)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 21.3962	Other (At-Grade) Single-Lane	1994	Completed November 1994. ICD estimated from Google Maps linework.
Lisbon, MD Howard Co. United States	MD 94 / MD 144 (39.33700, -77.07360)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 30.4800	Other (At-Grade) Single-Lane	1993	First roundabout in Maryland. Built initially as temporary, made permanent after one month.
Gainesville, FL Alachua Co. United States	SE 7th St. / SE 4th Ave. (29.64824, -82.31792)	Traffic Calming Circle Existing	All-Way Yield None	4 Approaches 0 Driveways 18.2880	Other (At-Grade) Single-Lane	1992	Pedestrian crossings within circulatory roadway. Completed April 1992.
Fort Walton Beach, FL Okaloosa Co. United States	Hollywood Blvd. / Doolittle Blvd. (30.41364, -86.66468)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 29.8704	Other (At-Grade) Single-Lane	1994
Tallahassee, FL Leon Co. United States	Killarney Way / Shamrock Dr. (30.51361, -84.22315)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 27.7810	Other (At-Grade) Single-Lane	1994	Completed August 1994. ICD estimated from Google Maps linework.
Bradenton Beach, FL Manatee Co. United States	SR 789 / Bridge St. (27.46500, -82.69847)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 14.8361	Other (At-Grade) Single-Lane	1994	Completed August 1994. ICD estimated from Google Maps linework.
Modesto, CA Stanislaus Co. United States	Chandon Dr. / Calero Dr. (37.67642, -120.93380)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 27.4132	Other (At-Grade) Single-Lane	2002	ICD estimated from Google Maps linework.
Modesto, CA Stanislaus Co. United States	Bowen Ave. / Fremont Ave. (37.67470, -121.00260)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 18.9061	Other (At-Grade) Single-Lane	2002	Previously controlled by twsc ICD estimated from Google Maps linework.
Cedar Lake Township, MN Scott Co. United States	SH 13 (Langford Ave.) / CR 2 (260th St.) (44.57259, -93.50546)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 45.9429	Other (At-Grade) Single-Lane	2005	Rural location, intersection of two 55-mph facilities. Previous 2-way stop had 2 fatal crashes and 50 injury crashes in 5 years. Opened to traffic in September 2005. During 12 months after opening, 1 reported crash involving single motorcycle running off road. Previously controlled by two-way stop Functional Class: Arterial ICD estimated from Google Maps linework.
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.
Lutherville-Timonium, MD Baltimore Co. United States	MD 139 (Charles St.) / Bellona Ave. (39.41790, -76.62900)	Roundabout Removed	All-Way Yield None	4 Approaches 0 Driveways 28.9560	Other (At-Grade) Multilane (2 Lane, unspecified)	1999	Two-lane circulatory roadway across northern half.
Copley Township, OH Summit Co. United States	Ridgewood Rd. / Hametown Rd. (41.11395, -81.66791)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 25.1947	Other (At-Grade) Single-Lane	2006	Opened August 21, 2006. ICD estimated from Google Maps linework.
Decatur, GA DeKalb Co. United States	N Decatur Rd. / Lullwater Rd. (33.78744, -84.32914)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 27.4320	Other (At-Grade) Single-Lane	2004
Ritchie, MD Prince Georges Co. United States	Ritchie-Marlboro Rd. / I-95 SB Ramps (38.86894, -76.84738)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 770.9968	Freeway Ramps (Grade-Separated) Multilane (3+ Lane)	2001	Opening initially with two lanes. Expanded from two lanes to three lanes in 2010. 21442
Ritchie, MD Prince Georges Co. United States	Ritchie-Marlboro Rd. / I-95 NB Ramps (38.86824, -76.84158)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 67.0560	Freeway Ramps (Grade-Separated) Multilane (3+ Lane)	2001	Opened initially with two lanes. Expanded from two lanes to three lanes in 2010. 21442
Santa Barbara, CA Santa Barbara Co. United States	Milpas St. / US 101 NB Ramps / Carpinteria St. (34.42073, -119.67765)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 62.4840	Other (At-Grade) Multilane (2 Lane, unspecified)	2000	Oblong shaped. ICD = 250 ft x 125 ft. Completed April 2000. Experienced one single-vehicle fatality (date unknown). 11861-05.
Cottonwood, AZ Yavapai Co. United States	AZ 89A / Verde Heights Dr. (34.73999, -112.03740)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 54.8640	Other (At-Grade) Multilane (2 Lane, 2x2 max)	2009	Series of 5 roundabouts.
Oshkosh, WI Winnebago Co. United States	CTH E (Witzel Ave.) / Koeller St. (44.01805, -88.58098)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 48.7680	Other (At-Grade) Multilane (2 Lane, 2x2 max)	2010	Opened September 24, 2010.
Carlsbad, CA San Diego Co. United States	Legoland Dr. / Armada Dr. (33.13229, -117.31660)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 41.1480	Other (At-Grade) Multilane (2 Lane, 2x2 max)	1999	Unstriped circulatory roadway.
Phoenix, AZ Maricopa Co. United States	S. Pointe Pkwy. W / S. Pointe Pkwy. E (33.37649, -111.97210)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 50.8650	Other (At-Grade) Single-Lane	1994	Before 1997. ICD estimated from Google Maps linework.
Douglasville, GA Douglas Co. United States	SR 5 / SR 166 (33.61361, -84.83688)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 25.8602	Other (At-Grade) Single-Lane	2007	Fatal crash November 24, 2011. 11861-05. ICD estimated from Google Maps linework.
(unincorporated), MD Anne Arundel Co. United States	Arundel Beach Rd. / Leelyn Dr. (39.07955, -76.54560)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 25.9594	Other (At-Grade) Single-Lane	1999	ICD estimated from Google Maps linework.
Brunswick, MD Frederick Co. United States	MD 17 / A St. / B St. / Maryland Ave. (39.31433, -77.62807)	Roundabout Existing	All-Way Yield None	5 Approaches 0 Driveways 42.5054	Other (At-Grade) Single-Lane	2000	ICD estimated from Google Maps linework.
De Pere, WI Brown Co. United States	Scheuring Rd. (CTH F) / US 41 SB Ramps (44.43050, -88.11402)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 56.3880	Freeway Ramps (Grade-Separated) Multilane (2 Lane, 2x2 max)	2011	Series of 6 roundabouts. Opened September 2011.
Catonsville, MD Baltimore Co. United States	MD 372 / Hilltop Rd. / Entrance to UMBC (39.25733, -76.71964)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 35.1417	Other (At-Grade) Single-Lane	1998	Functional Class: Collector ICD estimated from Google Maps linework.
Lisbon, MD Howard Co. United States	MD 94 / Old Frederick Rd. (Lisbon North) (39.34810, -77.06930)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 26.7839	Other (At-Grade) Single-Lane	1999	ICD estimated from Google Maps linework.
Ellicott City, MD Howard Co. United States	MD 103 / MD 100 WB Ramps (39.20846, -76.78294)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 33.3154	Freeway Ramps (Grade-Separated) Single-Lane	1998	Opened November 1998. ICD estimated from Google Maps linework.
Ellicott City, MD Howard Co. United States	MD 103 / MD 100 EB Ramps (39.20733, -76.78243)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 30.5396	Freeway Ramps (Grade-Separated) Single-Lane	1998	Opened November 1998. ICD estimated from Google Maps linework.
Ellicott City, MD Howard Co. United States	Snowden River Pkwy. / MD 100 WB Ramps (39.21233, -76.79544)	Roundabout Existing	All-Way Yield Metering Signal	3 Approaches 0 Driveways 25.9105	Freeway Ramps (Grade-Separated) Single-Lane	1998	Opened November 1998. Metering signal on Snowden River Pkwy approach. ICD estimated from Google Maps linework.
Ellicott City, MD Howard Co. United States	MD 104 (Waterloo Rd.) / MD 100 WB Ramps (39.22470, -76.80600)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 45.7200	Freeway Ramps (Grade-Separated) Multilane (2 Lane, 2x2 max)	1999
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.
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.
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.
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
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.
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
Tampa (Ybor City), FL Hillsborough Co. United States	Channelside Dr. / Cumberland Ave. (27.94497, -82.44576)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 54.8640	Other (At-Grade) Multilane (2 Lane, unspecified)	1995	Right-turn-only lane on north leg.
Clearwater, FL Pinellas Co. United States	SR 60 / Coronado Dr. (SR 699) / Mandalay Ave. / Poinsettia Ave. (Gateway Roundabout) (27.97752, -82.82709)	Roundabout Existing	All-Way Yield Metering Signal	6 Approaches 0 Driveways 68.5587	Other (At-Grade) Multilane (2 Lane, unspecified)	1999	Modified 2002-2004 to change geometry and striping, and remove fountain. 21442
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.
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.
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	Pointe Pkwy. / S 48th St. (33.37162, -111.97410)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 39.6240	Other (At-Grade) Multilane (2 Lane, unspecified)	2000
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.
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.
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.
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
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.
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.
Lawrence, KS Douglas Co. United States	E. 19th St. / Barker Ave. (38.95003, -95.23283)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 16.7188	Other (At-Grade) Single-Lane	2004	Functional Class: Arterial 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.
Federal Way, WA King Co. United States	Weyerhaeuser Way S / 33rd Pl S / 32nd Dr. S (47.29863, -122.29280)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 35.6385	Other (At-Grade) Multilane (2 Lane, unspecified)	2000	Opened April 2000. Previously controlled by one-way stop Functional Class: Arterial ICD estimated from Google Maps linework.
Olathe, KS Johnson Co. United States	Sheridan Rd. / Rogers Rd. (38.87200, -94.79430)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 43.7027	Other (At-Grade) Multilane (2 Lane, unspecified)	2000	ICD estimated from Google Maps linework.
Olathe, KS Johnson Co. United States	Sheridan Rd. / Ridgeview Rd. / Dennis Ave. (38.87270, -94.79730)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 22.3160	Other (At-Grade) Single-Lane	2001	Completed April 2001. ICD estimated from Google Maps linework.
Olathe, KS Johnson Co. United States	Sheridan Rd. / Clairborne Rd. (38.87020, -94.79250)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 22.3168	Other (At-Grade) Single-Lane	2001	ICD estimated from Google Maps linework.
Parkville, MO Platte Co. United States	MO 45 (Tom Watson Pkwy.) / National Dr. (39.21016, -94.70027)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 48.1210	Other (At-Grade) Single-Lane	2000	Functional Class: Arterial ICD estimated from Google Maps linework.
Portland, OR Multnomah Co. United States	SW Terwilliger Blvd. / SW Palater Rd. (45.45290, -122.67660)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 38.1000	Other (At-Grade) Single-Lane	2002	Roundabout replaces existing Y-intersection, adds fourth leg to serve college law school. Includes driveway into roundabout serving two homes. Roundabout is on tilted plane with central island plane steeper than inscribed circle plane to manage cross slopes. Northeast leg (Palater Road) has 8-9 percent grade down into roundabout, then flattens using a short vertical curve to a zero percent crown at the top of the circulatory roadway. Maximum grade through the roundabout is 4 percent; maximum cross slope is -2 percent. First roundabout under City of Portland jurisdiction.
Anchorage, AK Anchorage United States	Dowling Rd. / New Seward Hwy SB Ramps (61.16636, -149.85780)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 35.1352	Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified)	2004	Previously controlled by one-way stop ICD estimated from Google Maps linework.
Anchorage, AK Anchorage United States	Dowling Rd. / New Seward Hwy NB Ramps (61.16637, -149.85520)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 38.0151	Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified)	2004	Spiral striping. ICD estimated from Google Maps linework.
Culloden, GA Monroe Co. United States	SR 7-US 341 / SR 74 (32.87954, -84.09019)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 39.1175	Other (At-Grade) Single-Lane	2008	Functional Class: Rural ICD estimated from Google Maps linework.
Bayfield, CO La Plata Co. United States	CR 501 / Bayfield Center Dr. (37.23393, -107.60191)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 41.1480	Other (At-Grade) Single-Lane	2001	Bayfield Center Drive is a new roadway. Completed Fall 2001.
Astoria, OR Clatsop Co. United States	US 101 / Hwy 202 (Nehalem Highway) (46.18290, -123.86070)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 45.4797	Other (At-Grade) Multilane (2 Lane, unspecified)	2002	Opened September 2002. First multilane roundabout on Oregon state highway system. ICD estimated from Google Maps linework.
Claremont, CA Los Angeles Co. United States	Indian Hill Blvd. / Bonita St. (34.09662, -117.71930)	Roundabout Removed	All-Way Yield Unknown	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Unknown	2000	Temporary roundabout installed in August 1999, removed in April 2000. Strong public negative opinion cited as reason for removal. (Westernite, July-August 2000, pp. 2-3)
Monroe, WA Snohomish Co. United States	SR 522 EB Ramps / 164th St. SE / Tester Rd. (47.84863, -122.00580)	Roundabout Existing	All-Way Yield None	5 Approaches 0 Driveways 60.9143	Other (At-Grade) Multilane (2 Lane, unspecified)	2001	Completed August 2001. This project won the Washington State APWA 2001 Project of the Award and the ASCE Seattle Section 2001 Outstanding Project Award. The Project is documented in the Compendium of Papers for 2000 ITE District 6 Annual Meeting, San Diego, CA. Reconfiguration of two intersections into a roundabout. Previously controlled by two-way stop ICD estimated from Google Maps linework.
Bend, OR Deschutes Co. United States	NW Mt. Washington Dr. / NW Skyliners Rd. (44.05369, -121.35490)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 40.3425	Other (At-Grade) Single-Lane	2005	Roundabout constructed with addition of south leg. ICD estimated from Google Maps linework.
Bend, OR Deschutes Co. United States	NW Shevlin Park Rd. / Newport Ave. / College Way (44.06240, -121.33770)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 32.6125	Other (At-Grade) Single-Lane	2006	ICD estimated from Google Maps linework.
Bend, OR Deschutes Co. United States	NW Mt. Washington Dr. / Shevlin Park Rd. (44.06780, -121.35530)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 37.7584	Other (At-Grade) Single-Lane	2000	South leg on Mt. Washington Drive added as part of new development. ICD estimated from Google Maps linework.
Bend, OR Deschutes Co. United States	NW Mt. Washington Dr. / NW Crossing Dr. (44.05890, -121.35670)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 32.6144	Other (At-Grade) Single-Lane	2000	Both roadways brand new as part of new development. ICD estimated from Google Maps linework.