Roundabouts Database Index

29465 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
Woodbridge, VA Prince William Co. United States	Belmont Bay Dr. / Course View Way (38.65403, -77.23640)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 25.1826	Other (At-Grade) Single-Lane	2000	ICD estimated from Google Maps linework.
Huntsville, AL Madison Co. United States	Home Depot Access / Costco Access (34.74251, -86.60383)	Roundabout Existing	All-Way Yield None	3 Approaches 1 Driveways 30.4236	Other (At-Grade) Single-Lane	2000	Year Completed estimated (1998-2002). ICD estimated from Google Maps linework.
Carthage, MO Jasper Co. United States	W George Phelps Blvd. / S Garrison Ave. (37.14409, -94.31474)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 33.3208	Other (At-Grade) Single-Lane	2000	Year Completed estimated (1997-2003). ICD estimated from Google Maps linework.
Carthage, MO Jasper Co. United States	E Airport Dr. / S Grand Ave. / Fairlawn Ave. (37.14749, -94.31065)	Roundabout Existing	All-Way Yield Unknown	5 Approaches 0 Driveways 50.4549	Other (At-Grade) Single-Lane	2000	Year Completed estimated (1997-2003). ICD estimated from Google Maps linework.
Pleasanton, CA Alameda Co. United States	Mill Creek Pl. / Oak Vista Way (37.65794, -121.89347)	Traffic Calming Circle Existing	Uncontrolled None	3 Approaches 1 Driveways 16.0738	Other (At-Grade) Single-Lane	2000	Year Completed estimated (1993-2002). ICD estimated from Google Maps linework.
Syracuse, UT Davis Co. United States	S Bluff Rd. / S 2000 W / W 2700 S (41.07470, -112.06459)	Roundabout Existing	All-Way Yield None	6 Approaches 0 Driveways 33.3129	Other (At-Grade) Single-Lane	2000	Painted splitter islands. Year Completed estimated (1997-2003). ICD estimated from Google Maps linework.
Princeton, NJ Mercer Co. United States	Elm Dr. / South Dr. (40.34078, -74.65595)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 1 Driveways 29.1305	Other (At-Grade) Single-Lane	2000	Year Completed estimated (1997-2002). ICD estimated from Google Maps linework.
Prescott, AZ Yavapai Co. United States	Blooming Hills Dr. / S Blooming Hills Dr. (34.58020, -112.44489)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 33.4332	Other (At-Grade) Single-Lane	2000	Year Completed estimated (1992-2002). ICD estimated from Google Maps linework.
Yamachiche, QC Maskinongé Canada	Boulevard Saint Laurent E / Route Ste-Anne O / Route du Pays Brûlé (46.26235, -72.87783)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 42.1111	Other (At-Grade) Single-Lane	2000	Year Completed estimated (before 2005). ICD estimated from Google Maps linework.
Saguenay, QC Saguenay Canada	Rue Jacques-Cartier E / Boulevard Talbot (48.42400, -71.04228)	Roundabout Existing	All-Way Yield Unknown	3 Approaches 0 Driveways 30.1177	Other (At-Grade) Single-Lane	2000	Year Completed estimated (before 2005). ICD estimated from Google Maps linework.
Saguenay, QC Saguenay Canada	Rue Jacques-Cartier E / Rue du Foyer / Rue des Franciscaines (48.42346, -71.03839)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 25.3626	Other (At-Grade) Single-Lane	2000	Year Completed estimated (before 2005). ICD estimated from Google Maps linework.
Clovis, CA Fresno Co. United States	Deauville Cir. / Armstrong Ave. (36.86322, -119.67286)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 58.2883	Other (At-Grade) Single-Lane	2000	Pedestrian crossing next to circulatory roadway. ICD estimated from Google Maps linework.
Knoxville, TN Knox Co. United States	Gleason Dr. SW / Wellsley Park Rd. SW (35.92329, -84.02883)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 47.3914	Other (At-Grade) Single-Lane	2000	Year Completed estimated (1997-2002). Original two-lane circulatory roadway with concentric lane line. Striped out inner lane of circulatory roadway to make single-lane around 2014-2016. ICD estimated from Google Maps linework.
Aurora, CO Arapahoe Co. United States	S Old Tom Morris Rd. / Catawba Cir. / (golf course parking lot) (39.68629, -104.70910)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 33.0875	Other (At-Grade) Single-Lane	2000	Windmill in central island. Year Completed estimated (1999-2003). ICD estimated from Google Maps linework.
Aiken, SC Aiken Co. United States	E Gate Dr. / Aiken Mall Dr. SW / (parking lot) (33.51065, -81.71479)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 28.8785	Other (At-Grade) Single-Lane	2000	Channelized right-turn lanes on all legs. No Left Turn signs under Yield signs. Year Completed estimated (1994-2005). ICD estimated from Google Maps linework.
Bluffton, SC Beaufort Co. United States	Bridgewater Dr. / Parkside Dr. (32.27840, -80.90985)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 44.4295	Other (At-Grade) Single-Lane	2000	Year Completed estimated (1994-2005). ICD estimated from Google Maps linework.
St Catharines, ON Niagara Canada	Suzanne Rochon-Burnett Circle (University Rd. E / Greenhouse Ln. / Ray Woodfield Dr. / John McDonald St.) (43.12007, -79.24428)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 45.0000	Other (At-Grade) Single-Lane	2000	Initial completion estimated (before 2003). Modified approximately 2003-2007 to realign University Road leg. ICD estimated from Google Maps linework. 21442
Vaughan, ON York Canada	Cranston Park Ave. / Melville Ave. / Drummond Dr. (43.86528, -79.52939)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 31.8598	Other (At-Grade) Single-Lane	2000	Year Completed estimated (before 2002). ICD estimated from Google Maps linework.
Mount Pleasant, SC Charleston Co. United States	Park West Blvd. / Queensgate Way (32.89109, -79.78477)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 59.1701	Other (At-Grade) Single-Lane	2000	Year Completed estimated (1999-2002). ICD estimated from Google Maps linework.
Chambly, QC La Vallée-du-Richelieu Regional County Municipality Canada	Avenue Bourgogne / Avenue de Salaberry / Rue Martel (45.44894, -73.29059)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 25.1362	Other (At-Grade) Single-Lane	2000	Year Completed estimated (before 2009). ICD estimated from Google Maps linework.
Sykesville, MD Carroll Co. United States	Old Washington Rd. (MD 97) / W Old Liberty Rd. (39.42906, -77.00755)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 34.1330	Other (At-Grade) Single-Lane	2000	Year Completed estimated (1995-2005). ICD estimated from Google Maps linework.
Saguenay, QC Saguenay Canada	Boulevard du Saguenay / Rue Moissan / Rue Oersted / Boulevard Mellon (48.43281, -71.17983)	Roundabout Existing	All-Way Yield None	5 Approaches 0 Driveways 31.6974	Other (At-Grade) Single-Lane	2000	Year Completed estimated (before 2005). ICD estimated from Google Maps linework.
Maryland Heights, MO St. Louis Co. United States	Casino Center Dr. / (casino parking) (38.75175, -90.47969)	Other Existing	All-Way Yield None	3 Approaches 0 Driveways 39.1195	Other (At-Grade) Multilane (2 Lane, unspecified)	1999	Yield on circulatory roadway. Year Completed estimated (1996-2002) ICD estimated from Google Maps linework.
Norman, OK Cleveland Co. United States	Manor Hill Dr. / Sherburne Rd. (35.22406, -97.50950)	Roundabout Existing	All-Way Yield None	3 Approaches 5 Driveways 36.0991	Other (At-Grade) Single-Lane	1999	No truck apron. Year Completed estimated (1995-2003). ICD estimated from Google Maps linework.
Elgin, SC Richland Co. United States	Jacobs Millpond Rd. / Woodcreek Farms Rd. (34.12103, -80.83451)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 23.7295	Other (At-Grade) Single-Lane	1999	Year Completed estimated (1994-2003). ICD estimated from Google Maps linework.
Newberg, OR Yamhill Co. United States	Foothills Dr. / Center St. (45.32467, -122.96999)	Traffic Calming Circle Existing	All-Way Yield None	4 Approaches 0 Driveways 26.8710	Other (At-Grade) Single-Lane	1999	Very small splitter islands, with pedestrian crossings next to circulatory roadway. ICD estimated from Google Maps linework.
Yuma, AZ Yuma Co. United States	S Main St. / E 3rd St. (32.72258, -114.61788)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 15.0718	Other (At-Grade) Single-Lane	1999	Painted splitter islands on Main St. Year Completed estimated (1996-2002). ICD estimated from Google Maps linework.
Hercules, CA Contra Costa Co. United States	Refugio Valley Rd. / Redwood Rd. / Falcon Way (37.99686, -122.24780)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 34.8238	Other (At-Grade) Single-Lane	1999	ICD estimated from Google Maps linework.
Phoenix, AZ Maricopa Co. United States	Devonna Ln. / Watkins St. / 84th Dr. / Hammond Ln. (33.42601, -112.24090)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 23.9228	Other (At-Grade) Single-Lane	1999	ICD estimated from Google Maps linework.
West Des Moines, IA Dallas Co. United States	Wistful Vista Dr. / S. 79th St. (41.56572, -93.81668)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 36.6372	Other (At-Grade) Single-Lane	1999	ICD estimated from Google Maps linework.
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.
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.
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.
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
Chesterfield, MO St. Louis Co. United States	Schoettler Valley Dr. / Highcroft Dr. (38.64415, -90.55331)	Other Removed	Unknown Unknown	4 Approaches 0 Driveways 17.7235	Other (At-Grade) Single-Lane	1999	Temporary roundabout installed in Fall 1999. Removed September 25, 2000 due to negative public opinion. Intersection returned to AWSC. Functional Class: Local ICD estimated from Google Maps linework.
Clemmons, NC Forsyth Co. United States	Fraternity Church Rd. / Hope Church Rd. (36.02653, -80.34301)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 28.0113	Other (At-Grade) Single-Lane	1999	Existing three-legged intersection converted to a four-legged intersection by adding new Clemmons Middle School driveway at the roundabout. Previously controlled by one-way stop Functional Class: Local ICD estimated from Google Maps linework.
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.
Annapolis, MD Anne Arundel Co. United States	Gateway Circle [MD 450 (West St.) / Taylor Ave. / Spa Rd.] (38.97630, -76.50486)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 54.8640	Other (At-Grade) Multilane (2 Lane, unspecified)	1999	Elliptical shaped. ICD = 180 ft x 160 ft. Opened December 1999.
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.
(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.
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.
Brattleboro, VT Windham Co. United States	Rte 9 / Rte 5 (42.88500, -72.55670)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 51.8160	Other (At-Grade) Multilane (2 Lane, 2x2 max)	1999	Adjacent to I-89. Heavy truck volume (>7%).
Arcata, CA Humboldt Co. United States	Samoa Blvd. / Buttermilk Ln. (40.85710, -124.07250)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 36.1329	Other (At-Grade) Single-Lane	1999	Functional Class: Arterial ICD estimated from Google Maps linework.
Arcata, CA Humboldt Co. United States	Samoa Blvd. / Union St. (40.86140, -124.07730)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 35.2273	Other (At-Grade) Single-Lane	1999	Functional Class: Arterial ICD estimated from Google Maps linework.
Bend, OR Deschutes Co. United States	SW Century Dr. / SW Colorado Ave. / SW Chandler Ave. (44.04180, -121.33200)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 57.9120	Other (At-Grade) Single-Lane	1999	Completed Fall 1999. One leg comes in at 60 degree angle. Right-turn bypass lane part of conceptual design but removed for final. First modern roundabout in Oregon.
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.
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.
Davis, CA Yolo Co. United States	Shasta Dr. / Olympic Dr. (38.55540, -121.77620)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 24.2833	Other (At-Grade) Single-Lane	1999	Previously controlled by one-way stop Functional Class: Arterial ICD estimated from Google Maps linework.
Denver, CO Denver Co. United States	Chopper Cir. / VIP Parking / 9th St. / Access Rd (39.74721, -105.00810)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 52.3424	Other (At-Grade) Single-Lane	1999	Located at Pepsi Center arena Functional Class: Collector ICD estimated from Google Maps linework.
Reno, NV Washoe Co. United States	Wedekind Rd. / Clear Acre Ln. (39.55157, -119.78930)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 23.0222	Other (At-Grade) Single-Lane	1999	Previously controlled by two-way stop ICD estimated from Google Maps linework.
Superior, CO Boulder Co. United States	5th Ave. / Center Dr. (39.95764, -105.17190)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 31.1262	Other (At-Grade) Single-Lane	1999	Serves Costco and Target as part of 750,000 square foot shopping center. Functional Class: Local ICD estimated from Google Maps linework.
Eugene, OR Lane Co. United States	N. Terry St. / Roosevelt Blvd. (44.06371, -123.18825)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 20.5969	Other (At-Grade) Single-Lane	1999	ICD estimated from Google Maps linework.
Lakewood, CO Jefferson Co. United States	Allison Pkwy. / Civic Center (39.70906, -105.08630)	Roundabout Existing	All-Way Yield None	5 Approaches 0 Driveways 31.2390	Other (At-Grade) Single-Lane	1999	ICD estimated from Google Maps linework.
Carson City, NV Carson City Co. United States	E 5th St. / Fairview Dr. (39.16090, -119.72790)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 33.5280	Other (At-Grade) Single-Lane	1999
Northglenn, CO Adams Co. United States	Melody Dr. / Kennedy Dr. (39.89222, -104.99270)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 36.6541	Other (At-Grade) Single-Lane	1999	Roundabout is single-lane except for NB approach with separate RT lane. ICD estimated from Google Maps linework.
Greenwood Village, CO Arapahoe Co. United States	S. Monaco St. / E. Berry Ave. (39.61682, -104.91340)	Traffic Calming Circle Existing	Unknown Unknown	3 Approaches 0 Driveways 11.9603	Other (At-Grade) Single-Lane	1999	ICD estimated from Google Maps linework.
Greenwood Village, CO Arapahoe Co. United States	S. Monaco St. / E. Dorado Ave. (39.61319, -104.91350)	Traffic Calming Circle Existing	Unknown Unknown	4 Approaches 0 Driveways 9.2007	Other (At-Grade) Single-Lane	1999	ICD estimated from Google Maps linework.
Greenwood Village, CO Arapahoe Co. United States	S. Monaco St. / E. Dorado Pl. (39.61199, -104.91350)	Traffic Calming Circle Existing	Unknown Unknown	3 Approaches 0 Driveways 11.0410	Other (At-Grade) Single-Lane	1999	ICD estimated from Google Maps linework.
Greenwood Village, CO Arapahoe Co. United States	S. Monaco St. / E. Ida Ave. (39.61082, -104.91350)	Traffic Calming Circle Existing	Unknown Unknown	4 Approaches 0 Driveways 14.7216	Other (At-Grade) Single-Lane	1999	ICD estimated from Google Maps linework.
Greenwood Village, CO Arapahoe Co. United States	S. Monaco St. / E. Powers Ave. (39.61501, -104.91350)	Traffic Calming Circle Existing	Unknown Unknown	4 Approaches 0 Driveways 9.2005	Other (At-Grade) Single-Lane	1999	ICD estimated from Google Maps linework.
Greenwood Village, CO Arapahoe Co. United States	S. Monaco St. / E. Prentice Pl. (39.61977, -104.91350)	Traffic Calming Circle Existing	Unknown Unknown	3 Approaches 0 Driveways 14.7197	Other (At-Grade) Single-Lane	1999	ICD estimated from Google Maps linework.
Bloomington, IN Monroe Co. United States	High St. / Winslow Rd. / Rogers Rd. (39.13631, -86.50819)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 38.9078	Other (At-Grade) Single-Lane	1999	$497,000 construction cost. ICD estimated from Google Maps linework.
Willimantic, CT Windham Co. United States	Eastern Rd. / (driveway) (ECSU Campus by clock tower) (41.72001, -72.21691)	Traffic Calming Circle Existing	All-Way Yield None	3 Approaches 0 Driveways 24.0693	Other (At-Grade) Single-Lane	1999	Not properly signed and painted, but lots of potential for demonstrating this intersection concept. ICD estimated from Google Maps linework.
Bel Air, MD Harford Co. United States	Tollgate Rd. / Wheel Rd. (39.48999, -76.32914)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 28.5729	Other (At-Grade) Single-Lane	1999	http://www.teachamerica.com/roundabouts/RA058B_ppr_Statmeyer.pdf#search=%22bel%20air%20roundabout%22 ICD estimated from Google Maps linework.
Davis, CA Yolo Co. United States	Moore Blvd. / Rockwell Dr. (38.56830, -121.72630)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 25.2127	Other (At-Grade) Single-Lane	1999	Date estimated. Functional Class: Local ICD estimated from Google Maps linework.
Davis, CA Yolo Co. United States	Moore Blvd. / Wright Blvd. (38.56490, -121.71860)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 24.2801	Other (At-Grade) Single-Lane	1999	Date estimated. Functional Class: Local 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.
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.
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.
Howard, WI Brown Co. United States	Lineville Rd. (CTH M) / Cardinal Ln. (CTH EB) (44.59090, -88.08430)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 29.7684	Other (At-Grade) Single-Lane	1999	Roundabout is near Forest Glen Elementary School, Lineville Intermediate School, and Bay Port High School. Completed October 1999. http://www.co.brown.wi.us/Planning/roundabouts.html Functional Class: Arterial ICD estimated from Google Maps linework.
Howard, WI Brown Co. United States	Lineville Rd. (CTH M) / Rockwell Ln. (44.59080, -88.08880)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 28.0674	Other (At-Grade) Single-Lane	1999	Roundabout is adjacent to Lineville Intermediate School, Middle School, and High School. School did not allow pedestrian crossings prior to roundabout due to unsafe conditions, now allows crossings using crossing guard. Completed October 1999. http://www.co.brown.wi.us/Planning/roundabouts.html Previously controlled by one-way stop Functional Class: Arterial ICD estimated from Google Maps linework.
St. George, UT Washington Co. United States	Main St. / 200 N St. / Diagonal St. (37.11152, -113.58350)	Roundabout Existing	All-Way Yield Unknown	5 Approaches 0 Driveways 30.4778	Other (At-Grade) Single-Lane	1999	ICD estimated from Google Maps linework.
Orlando, FL Orange Co. United States	N. Westmoreland Dr. / N. Lake Adair Blvd. (28.56104, -81.39342)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 17.8328	Other (At-Grade) Single-Lane	1999	Old circle, judging by condition of brick pavement; additional yield signs w/ minimum fine; official bike route; drainage constraints Functional Class: Collector? ICD estimated from Google Maps linework.
Petaluma, CA Sonoma Co. United States	Casa Grande Rd. / Ely Blvd. (38.24348, -122.59580)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 31.8924	Other (At-Grade) Single-Lane	1999	ICD estimated from Google Maps linework.
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.
Honolulu, HI Oahu Co. United States	Keeaumoku St. / Heulu St. (21.30592, -157.83500)	Roundabout Existing	Unknown Unknown	4 Approaches 0 Driveways 17.8032	Other (At-Grade) Single-Lane	1999	Urban. ICD estimated from Google Maps linework.
Stillwater, MN Washington Co. United States	Rutherford Rd. / 72nd St. / New England Pl. (School House Circle) (45.05673, -92.85909)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 55.6830	Other (At-Grade) Single-Lane	1999	Functional Class: Local ICD estimated from Google Maps linework.
New Castle, CO Garfield Co. United States	Castle Valley Blvd. / Pyramid St. (39.57959, -107.52880)	Roundabout Existing	Unknown Unknown	3 Approaches 0 Driveways 33.1386	Other (At-Grade) Single-Lane	1999	ICD estimated from Google Maps linework.
New Castle, CO Garfield Co. United States	Castle Valley Blvd. / (TBD) (39.57517, -107.52190)	Roundabout Existing	Unknown Unknown	2 Approaches 0 Driveways 31.2996	Other (At-Grade) Single-Lane	1999	Facilitates U-turns. ICD estimated from Google Maps linework.
Provo, UT Utah Co. United States	5000 North / Edgewood Dr. (40.30066, -111.65750)	Roundabout Existing	Unknown Unknown	4 Approaches 0 Driveways 19.1282	Other (At-Grade) Single-Lane	1999	ICD estimated from Google Maps linework.
Barnstable, MA Barnstable Co. United States	Rte 149 / Race Ln. (41.68164, -70.40159)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 25.8676	Other (At-Grade) Single-Lane	1999	ICD estimated from Google Maps linework.
Lexington, KY Fayette Co. United States	W Reynolds Rd. / Keithshire Way / Wellington Way (37.99520, -84.53814)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 62.1196	Other (At-Grade) Multilane (2 Lane, unspecified)	1999	Opened between 1997 and 2002. Functional Class: Collector ICD estimated from Google Maps linework.
Jensen Beach, FL Martin Co. United States	SR 707 / Pineapple Dr. / Jensen Beach Causeway (27.25074, -80.22818)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 30.7914	Other (At-Grade) Single-Lane	1999	RT only lanes entering roundabout on two approaches. ICD estimated from Google Maps linework.
(unincorporated), FL Seminole Co. United States	Alaqua Lakes Blvd. / Lakeview Oaks Dr. / Ashton Oaks Cove (28.75415, -81.39022)	Other Existing	Unknown Unknown	3 Approaches 0 Driveways 58.6353	Other (At-Grade) Single-Lane	1999	ICD estimated from Google Maps linework.
(unincorporated), FL Seminole Co. United States	Alqua Blvd. / Fernlake Pl. (28.76020, -81.39994)	Other Existing	Unknown Unknown	3 Approaches 0 Driveways 60.7259	Other (At-Grade) Single-Lane	1999	ICD estimated from Google Maps linework.
Alpharetta, GA Fulton Co. United States	Rainwater Dr. / (unknown) (34.06288, -84.28911)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 22.7564	Other (At-Grade) Single-Lane	1999	Functional Class: Local ICD estimated from Google Maps linework.
San Diego, CA San Diego Co. United States	49th St. / Adams Ave. / Euclid Ave. / Loraine Dr. (32.76279, -117.08910)	Traffic Calming Circle Existing	All-Way Yield None	5 Approaches 0 Driveways 35.1516	Other (At-Grade) Single-Lane	1999	Functional Class: Local ICD estimated from Google Maps linework.
Cincinnati, OH Hamilton Co. United States	Fulton Ave / Eden Park Drive (39.11472, -84.49347)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 34.2865	Other (At-Grade) Single-Lane	1999	ICD estimated from Google Maps linework.
Carson City, NV Carson City Co. United States	Northridge Dr. / Tablerock Dr. (39.18460, -119.75685)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 25.9080	Other (At-Grade) Single-Lane	1999	Year Completed estimated (1994-1999).
Draper, UT Salt Lake Co. United States	Mike Weir Dr. / Sage Hollow Dr. / S Rambling Rd. (40.49752, -111.84179)	Other Existing	All-Way Yield None	3 Approaches 0 Driveways 60.8499	Other (At-Grade) Single-Lane	1999	Partially painted splitter islands on two legs; no splitter islands on third leg. ICD estimated from Google Maps linework.
Camp Springs, MD Prince George's Co. United States	Capital Gateway Dr. / Auth Rd. / Old Soper Rd. (38.82403, -76.91189)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 48.7680	Other (At-Grade) Multilane (2 Lane, unspecified)	1999	Unstriped circulatory roadway. Year Completed estimated (1995-2001).
Madison, WI Dane Co. United States	Dayflower Dr. / Starr Grass Dr. (43.03834, -89.51671)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 30.4800	Other (At-Grade) Single-Lane	1999	Year Completed estimated (before 2000).
West Bend, WI Washington Co. United States	Poplar St. / 6th Ave. (43.42078, -88.18365)	Traffic Calming Circle Existing	All-Way Yield None	4 Approaches 0 Driveways 22.8600	Other (At-Grade) Single-Lane	1999	No splitter islands.
Allen, TX Collin Co. United States	Allen High School entrance / (parking) (33.11043, -96.66008)	Other Existing	All-Way Yield None	3 Approaches 0 Driveways 67.0550	Other (At-Grade) Single-Lane	1999	Pedestrian access to central island; parking along circulatory roadway. Elliptical shaped. Located on the Allen High School Campus. ICD = 230 ft x 175 ft.
McKinney, TX Collin Co. United States	Riverbrook Dr. / Silverlake Rd. / Waterfall Dr. (33.18958, -96.71624)	Other Existing	Other None	3 Approaches 0 Driveways 30.4800	Other (At-Grade) Single-Lane	1999	No splitter islands. Two minor approached controlled with Stop Signs.