Roundabouts Database Index

11398 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
Las Vegas (Summerlin), NV Clark 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)	1999	Functional Class: Collector ICD estimated from Google Maps linework.
Las Vegas (Summerlin), NV Clark 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)	2000	Functional Class: Collector. Year Completed estimated (1999-2002). ICD estimated from Google Maps linework.
Henderson (Seven Hills), NV Clark United States	Grand Hills Dr. / Rio Secoo Golf Club (35.97713, -115.11100)	Other Existing	Unknown Unknown	3 Approaches 0 Driveways 74.4214	Other (At-Grade) Single-Lane	1998	Functional Class: Collector ICD estimated from Google Maps linework.
Gordonsville, VA Orange United States	James Madison Hwy / N. Main St. / Spotswood Trl. (38.14261, -78.18947)	Other Existing	Unknown Unknown	4 Approaches 0 Driveways 31.9366	Other (At-Grade) Single-Lane		ICD estimated from Google Maps linework.
Howard, WI Brown 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 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.
Salt Lake City, UT Salt Lake United States	South Campus Dr. / Center Campus Dr. (40.75968, -111.84490)	Roundabout Existing	All-Way Yield At-grade Rail Crossing Gates (controlling roundabout)	3 Approaches 0 Driveways 30.7581	Other (At-Grade) Single-Lane	2003	Light rail runs through center of roundabout, protected by gates. ICD estimated from Google Maps linework.
Alpine, UT Utah 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 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)	2012	Series of 3 roundabouts. Opened August 31, 2012. ICD estimated from Google Maps linework.
Green Bay, WI Brown 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 United States	1300 East / Pioneer Rd (40.52518, -111.85340)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 37.2212	Other (At-Grade) Single-Lane	2001	ICD estimated from Google Maps linework.
Orem, UT Utah 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 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 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.
Provo, UT Utah United States	550 West / 1950 North (40.26043, -111.66600)	Other Existing	Unknown Unknown	5 Approaches 0 Driveways 21.8738	Other (At-Grade) Single-Lane		Within parking lot; not fully developed as roundabout. Functional Class: Local ICD estimated from Google Maps linework.
Provo, UT Utah United States	3700 North / 300 West (40.28282, -111.66310)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 28.2444	Other (At-Grade) Single-Lane	2001	ICD estimated from Google Maps linework.
Provo, UT Utah United States	1375 West / 820 North (40.24470, -111.68280)	Roundabout Existing	All-Way Yield None	3 Approaches 1 Driveways 28.2603	Other (At-Grade) Single-Lane	2001	ICD estimated from Google Maps linework.
Orem, UT Utah United States	2000 South / Sandhill Rd. (40.26074, -111.70420)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 33.7220	Other (At-Grade) Single-Lane	2006	ICD estimated from Google Maps linework.
St. George, UT Washington United States	Tabernacle Rd. / Main St. (37.10812, -113.58350)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 23.8119	Other (At-Grade) Single-Lane	2001	ICD estimated from Google Maps linework.
St. George, UT Washington United States	E. Brigham Rd. / I-15 NB Ramps (37.05939, -113.58350)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 42.8889	Freeway Ramps (Grade-Separated) Single-Lane	2006	Raindrop-shaped interchange terminal. ICD estimated from Google Maps linework.
Park City, UT Summit United States	Powderwood Dr. / Factory Outlet Parking (40.72733, -111.55255)	Other Existing	All-Way Yield None	3 Approaches 0 Driveways 24.4374	Other (At-Grade) Single-Lane	2000	Pedestrian access to central island. ICD estimated from Google Maps linework.
Park City, UT Summit United States	Kilby Rd. / Factory Outlet Parking (40.73040, -111.55040)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 34.3918	Other (At-Grade) Multilane (2 Lane)	2000	ICD estimated from Google Maps linework.
Orem, UT Utah United States	S 800 W / College Dr. / Sandhill Rd. (UVSC South Entrance) (40.27592, -111.71290)	Roundabout Existing	Unknown Unknown	4 Approaches 0 Driveways 36.4480	Other (At-Grade) Multilane (2 Lane)	1996	ICD estimated from Google Maps linework.
Nashville, TN Davidson United States	Demonbreun St. / 16th Ave. / Division St. / Music Square E. (36.15210, -86.79163)	Other Existing	Unknown Unknown	0 Approaches 0 Driveways 54.0044	Other (At-Grade) Unknown		ICD estimated from Google Maps linework.
Seattle, WA King United States	29th Ave. S / S. Judkins St. (47.59217, -122.29550)	Neighborhood Traffic Circle Existing	Unknown Unknown	0 Approaches 0 Driveways 12.8873	Other (At-Grade) Unknown	2006	ICD estimated from Google Maps linework.
Seattle, WA King United States	31st Ave. E / E. Denny St. (47.62016, -122.29230)	Neighborhood Traffic Circle Existing	Unknown Unknown	0 Approaches 0 Driveways 64.4023	Other (At-Grade) Unknown	2006	ICD estimated from Google Maps linework.
Rising Sun, MD Cecil United States	MD 273 (Rising Sun Rd.) / MD 276 (Jacob Tome Memorial Hwy.) (39.69595, -76.08018)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 39.5157	Other (At-Grade) Single-Lane	2003	ICD estimated from Google Maps linework.
Rosemont, MD Frederick United States	MD 17 / MD 180 (39.33768, -77.63950)	Roundabout Existing	Unknown Unknown	4 Approaches 0 Driveways 30.4828	Other (At-Grade) Single-Lane	2001	ICD estimated from Google Maps linework.
Urbana, MD Frederick 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)	2000	Rural ICD estimated from Google Maps linework.
Bel Air, MD Harford 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 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 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 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)	2001	Series of 4 roundabouts. ICD estimated from Google Maps linework.
Scaggsville, MD Howard 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)	2001	Series of 4 roundabouts. ICD estimated from Google Maps linework.
Millington, MD Kent 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 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 United States	N. 70th Pl. / E. Chaparral Rd. (33.50954, -111.92900)	Neighborhood Traffic Circle Existing	Unknown Unknown	0 Approaches 0 Driveways 23.8998	Other (At-Grade) Single-Lane	2000	ICD estimated from Google Maps linework.
Oak Grove, MD Prince Georges 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 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 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 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 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 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.
Juneau, AK Juneau United States	Douglas Hwy / North Douglas Hwy (58.29718, -134.43280)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 38.9134	Other (At-Grade) Single-Lane	2005	Previously controlled by one-way stop Functional Class: Arterial ICD estimated from Google Maps linework.
Portland, OR Multnomah United States	NE Mt. Hood Ave. / Frontage Rd. / PDX Airport Economy Blue Lot / PDX Airport Economy Red Lot (45.57770, -122.55950)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 36.7822	Other (At-Grade) Single-Lane	2000	ICD estimated from Google Maps linework.
Seattle, WA King United States	Densmore Ave. N / N 137th St. (47.72867, -122.33830)	Neighborhood Traffic Circle Existing	Unknown Unknown	0 Approaches 0 Driveways 16.8705	Other (At-Grade) Unknown	2006	ICD estimated from Google Maps linework.
Tooele, UT Tooele United States	W 2000 N / N 70 W (40.56555, -112.30310)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 37.1987	Other (At-Grade) Single-Lane	2000	ICD estimated from Google Maps linework.
North Haven, NY Suffolk United States	Tyndall Road / Rte. 114 (Ferry Rd.) (41.01303, -72.31309)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 25.2334	Other (At-Grade) Single-Lane	2001	Replaced a dangerous 2-way stop. Previously controlled by two-way stop ICD estimated from Google Maps linework.
Omaha, NE Douglas United States	N Saddle Creek Rd. / Country Club Ave. / Seward St. / 50th St. / Happy Hollow Rd. (41.27431, -95.99039)	Roundabout Existing	Unknown Unknown	8 Approaches 0 Driveways 28.7235	Other (At-Grade) Single-Lane	2003	Dogbone/peanut shape. ICD estimated from Google Maps linework.
Lacey, WA Thurston United States	Marvin Rd. / Britton Pkwy. (47.06905, -122.77090)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 46.3682	Other (At-Grade) Multilane (2 Lane)	2000	Completed September 14, 2000. Functional Class: Arterial ICD estimated from Google Maps linework.
Duvall, WA King United States	SR 203 (Carnation-Duvall Rd.) / 124th St. / Novelty Hill (47.70910, -121.98440)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 40.9865	Other (At-Grade) Multilane (2 Lane)	2004	http://www.wsdot.wa.gov/projects/sr203/NE124thNoveltyRd/ Functional Class: Arterial ICD estimated from Google Maps linework.
Gig Harbor, WA Pierce United States	Borgen Blvd. / SR 16 NB Ramps / Burnham Dr. (47.35843, -122.61260)	Roundabout Existing	All-Way Yield None	6 Approaches 0 Driveways 47.7339	Freeway Ramps (Grade-Separated) Multilane (2 Lane)	2001	Oval shaped central island. 6 legged configuration includes a on-ramp (outbound)leg. Central island is used as a roadway storm detention pond. Completed Summer/Fall 2001. Previously controlled by one-way stop ICD estimated from Google Maps linework.
Moses Lake, WA Grant United States	Yonezawa Blvd. / Clover Dr. / Kittleson Rd. (47.10387, -119.25730)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 43.8990	Other (At-Grade) Single-Lane	2001	Part of series of 3 roundabouts. Functional Class: Collector ICD estimated from Google Maps linework.
Moses Lake, WA Grant United States	Yonezawa Blvd. / Leanne Ave. (47.10454, -119.27060)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 41.4597	Other (At-Grade) Single-Lane	2001	Completed fall 2001. Part of series of 3 roundabouts. Functional Class: Collector ICD estimated from Google Maps linework.
Seattle, WA King United States	2nd Ave. NE / NE 91st St. (47.69499, -122.32710)	Neighborhood Traffic Circle Existing	Unknown Unknown	0 Approaches 0 Driveways 8.0388	Other (At-Grade) Unknown	2006	ICD estimated from Google Maps linework.
Bend, OR Deschutes United States	SW Mt. Washington Dr. / SW Simpson Ave. (44.04736, -121.34400)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 32.6208	Other (At-Grade) Single-Lane	2013	ICD estimated from Google Maps linework.
Town and Country, MO St. Louis United States	MO 141 SB Ramps / Woods Mill Rd. (38.63523, -90.51449)	Roundabout Existing	Unknown Unknown	3 Approaches 0 Driveways 38.2503	Other (At-Grade) Single-Lane	2002	Previously controlled by one-way stop ICD estimated from Google Maps linework.
Bel Air, MD Harford 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.
Fairbanks, AK Fairbanks North Star United States	Thompson Dr / Tanana Loop Dr (64.85564, -147.84200)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 52.2695	Other (At-Grade) Single-Lane	2004	The site is on the University of Alaska, Fairbanks, school campus. The project constructed a new entrance onto the campus intersecting by means of a roundabout with an existing three leg stop controlled intersection. Previously controlled by one-way stop Functional Class: Collector ICD estimated from Google Maps linework.
Murray, KY Calloway United States	Gilbert Groves Dr. / Murray State University parking lot (36.62003, -88.31861)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 22.0473	Other (At-Grade) Single-Lane	2003	ICD estimated from Google Maps linework.
Bainbridge Island, WA Kitsap United States	High School Rd. / Madison Ave. (47.63579, -122.52100)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 24.9484	Other (At-Grade) Single-Lane	2000	Greatly reduced congestion. Initial public opposition has turned to full support. Project located next to 3 schools. Separated sidewalks, timed yellow flashing lights during school crossing. Crossing guards. Near library and shopping center. Opened October 2000. ICD estimated from Google Maps linework.
Seattle, WA King United States	Linden Ave. N / N. 36th St. (47.65116, -122.34860)	Neighborhood Traffic Circle Existing	Unknown Unknown	0 Approaches 0 Driveways 35.4002	Other (At-Grade) Unknown	2006	ICD estimated from Google Maps linework.
Seattle, WA King United States	Woodlawn Ave. N / N. 36th St. (47.65051, -122.33870)	Neighborhood Traffic Circle Existing	Unknown Unknown	0 Approaches 0 Driveways 12.8730	Other (At-Grade) Unknown	2006	ICD estimated from Google Maps linework.
Seattle, WA King United States	18th Ave. E. / E. Spring St. (47.61154, -122.30890)	Neighborhood Traffic Circle Existing	Unknown Unknown	0 Approaches 0 Driveways 8.0516	Other (At-Grade) Unknown		ICD estimated from Google Maps linework.
Seattle, WA King United States	4th Ave. N / N. Prospect St. (47.62890, -122.34880)	Neighborhood Traffic Circle Existing	Unknown Unknown	0 Approaches 0 Driveways 10.4636	Other (At-Grade) Unknown	2006	ICD estimated from Google Maps linework.
Okemos, MI Ingham United States	Hamilton Rd. / Marsh Rd. (42.71625, -84.42687)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 29.8350	Other (At-Grade) Multilane (2 Lane)	2000	ICD estimated from Google Maps linework.
Dimondale, MI Eaton United States	East Rd. / Creyts Rd. (42.64743, -84.64275)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 31.6250	Other (At-Grade) Mini-roundabout	2001	British-style mini-roundabout. http://www.teachamerica.com/roundabouts/RA054A_Waddell_ppr.pdf ICD estimated from Google Maps linework.
Davis, CA Yolo United States	5th St. / Cantrill Dr. (38.55160, -121.72010)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 28.9547	Other (At-Grade) Single-Lane	1998	Police station on SW corner. Date estimated. ICD estimated from Google Maps linework.
Woodland, CA Yolo United States	Gum Ave. / Bourn Dr. (38.66820, -121.74710)	Roundabout Removed	All-Way Yield None	4 Approaches 0 Driveways 64.3428	Other (At-Grade) Single-Lane	2008	Built as temporary in 2002. Temporary removed in 2008 and converted to AWSC. Previously controlled by two-way stop Functional Class: Collector ICD estimated from Google Maps linework.
Davis, CA Yolo 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 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.
Anchorage, AK Anchorage United States	Southport Dr. / Maritime Loop / Washington Ave. (61.12706, -149.92590)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 29.9886	Other (At-Grade) Single-Lane	2001	The first winter resulted in several accidents, including the loss of a number of light poles around the circle. In response, minor modifications were made to the roundabout in 2002. ICD estimated from Google Maps linework.
Fort Wayne, IN Allen United States	Adams Center Rd. / Marion Center Rd. / Maples Rd. / Wayne Terr. (41.00440, -85.05704)	Roundabout Existing	All-Way Yield None	5 Approaches 0 Driveways 53.1774	Other (At-Grade) Single-Lane	1995	Year Completed estimated (before 1998). Functional Class: Collector ICD estimated from Google Maps linework.
Bloomington, IN Monroe 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.
Mount Pleasant, SC Charleston United States	Rifle Range Rd. / Bowman Rd. (Veterans Circle) (32.80469, -79.84284)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 31.1197	Other (At-Grade) Single-Lane	1998	Year Completed estimated (1994-2002) ICD estimated from Google Maps linework.
Encinitas, CA San Diego United States	Leucadia Blvd / Hymettus Ave (33.06470, -117.29620)	Roundabout Existing	Unknown Unknown	4 Approaches 0 Driveways 21.0192	Other (At-Grade) Single-Lane	2004	Previously controlled by two-way stop Functional Class: Collector ICD estimated from Google Maps linework.
Malta, NY Saratoga United States	Rte 67 (Dunning St.) / State Farm Pl. (42.96991, -73.80676)	Roundabout Existing	All-Way Yield None	3 Approaches 1 Driveways 43.6952	Other (At-Grade) Multilane (2 Lane)	2006	Part of a series of 5 roundabouts. ICD estimated from Google Maps linework.
Encinitas, CA San Diego United States	Leucadia Blvd / Hermes Ave (33.06482, -117.30010)	Roundabout Existing	Unknown Unknown	4 Approaches 0 Driveways 18.0164	Other (At-Grade) Single-Lane	2004	Previously controlled by two-way stop Functional Class: Collector ICD estimated from Google Maps linework.
The Villages, FL Sumter United States	Buena Vista Blvd. / Old Mill Run (28.90720, -81.98250)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 57.5036	Other (At-Grade) Multilane (2 Lane)	2003	Bypass lane for southbound through movement in addition to two entry lanes. ICD estimated from Google Maps linework.
Guelph, ON Wellington County Canada	Summerfield Dr. / Colonial Dr. (43.51809, -80.18253)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 29.4466	Other (At-Grade) Single-Lane	2001	Located in Pine Ridge East residenital subdivision Functional Class: Collector ICD estimated from Google Maps linework.
Lexington, KY Lexington-Fayette United States	Old Frankfort Pike / Alexandria Dr. (38.06952, -84.55762)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 75.2198	Other (At-Grade) Single-Lane	2010	ICD estimated from Google Maps linework.
Westfield, NJ Union United States	NJ 28 / E. Broad St. (Westfield Circle) (40.64849, -74.35027)	Rotary Existing	Unknown Unknown	3 Approaches 0 Driveways 42.5896	Other (At-Grade) Multilane (2 Lane)		Functional Class: Arterial ICD estimated from Google Maps linework.
Lafayette, LA Lafayette United States	Settlers Trace / River Ranch Dr. (30.17073, -92.03625)	Roundabout Existing	All-Way Yield None	2 Approaches 0 Driveways 42.3339	Other (At-Grade) Multilane (2 Lane)	2001	This a part of a Neo Traditional Neighborhood and the related street system. Completed June 2001. Functional Class: Collector ICD estimated from Google Maps linework.
Dumont / Cresskill, NJ Bergen United States	Madison Ave. / Knickerbocker Rd. (Monument) (40.94127, -73.97681)	Other Existing	Unknown Unknown	4 Approaches 0 Driveways 74.8804	Other (At-Grade) Single-Lane		Completed May 30, 1924. Nearest traffic count was conducted on Knickerbocker Road (County Route 505) about 0.5 km from the intersection. http://tcs.state.nj.us/tmsweb/Report/h2d5c913_99_hrvolume.pdf Functional Class: Local ICD estimated from Google Maps linework.
Hebron, KY Kenton United States	North Bend Rd. / Graves Rd. / Old North Bend Rd. (39.09881, -84.71849)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 46.3432	Other (At-Grade) Single-Lane	2009	ICD estimated from Google Maps linework.
Little Rock, AR Pulaski United States	36th St. / Romine Rd. / West Rd. (34.72098, -92.38181)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 22.5782	Other (At-Grade) Single-Lane	2001	Elementary school and church nearby. http://www.contextsensitivesolutions.org/content/case_studies/kentucky_roundabout/resources/kentucky_roundabout_pdf/ Functional Class: Arterial ICD estimated from Google Maps linework.
The Villages, FL Sumter United States	Morse Blvd. / Mariposa Way / Mission Hills Run (28.91829, -81.96940)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 57.4974	Other (At-Grade) Multilane (2 Lane)	2003	ICD estimated from Google Maps linework.
London, ON Middlesex County Canada	Lambton Dr. / Oxford Dr. (43.00616, -81.27515)	Neighborhood Traffic Circle Existing	Unknown Unknown	5 Approaches 0 Driveways 38.4291	Other (At-Grade) Single-Lane		Constructed sometime in the 1970s. Functional Class: Local ICD estimated from Google Maps linework.
Amelia Island, FL Nassau United States	Beach Walker Rd. / Beachwood Rd. (30.55425, -81.44608)	Roundabout Existing	Unknown Unknown	4 Approaches 0 Driveways 159.4166	Other (At-Grade) Single-Lane	2005	Functional Class: Local ICD estimated from Google Maps linework.
Seward, NE Seward United States	7th St. / 6th Ave. / 8th Ave. (40.91742, -97.10029)	Other Existing	Unknown Unknown	3 Approaches 0 Driveways 37.9050	Other (At-Grade) Single-Lane		Functional Class: Local ICD estimated from Google Maps linework.
Brookfield, IL Cook United States	Grand Blvd. / Washington St. (41.82755, -87.85150)	Other Existing	Unknown Unknown	8 Approaches 0 Driveways 41.8281	Other (At-Grade) Single-Lane		I am a chauffuer in the Chicago area and I use this roundabout frequently when traveling from the West Suburbs to Midway Airport. Only real traffic is on Grand Blvd at this intersection but it is in a downtown shopping district in Brookfield (13 mi WSW of Functional Class: Local ICD estimated from Google Maps linework.
St. George, UT Washington United States	E. Brigham Rd. / I-15 SB Ramps / Pioneer Rd. (37.05999, -113.58560)	Roundabout Existing	All-Way Yield None	6 Approaches 0 Driveways 78.1526	Freeway Ramps (Grade-Separated) Multilane (2 Lane)	2006	Combines interchange ramps and frontage road. ICD estimated from Google Maps linework.
Seattle, WA King United States	21st Ave. E / E. Republican St. (47.62320, -122.30470)	Neighborhood Traffic Circle Existing	Unknown Unknown	0 Approaches 0 Driveways 5.6349	Other (At-Grade) Unknown	2006	ICD estimated from Google Maps linework.
Advance, NC Davie United States	NC 801 / I-40 EB Ramps (36.00655, -80.44083)	Roundabout Removed	All-Way Yield None	3 Approaches 0 Driveways 17.3907	Freeway Ramps (Grade-Separated) Single-Lane	2002	Developer-built "temporary" intersection fix. Previously controlled by one-way stop ICD estimated from Google Maps linework.
Clemmons, NC Forsyth United States	Styers Ferry Rd. / Utility Dr. (River Ridge Roundabout) (36.07380, -80.39124)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 28.9598	Other (At-Grade) Single-Lane	2002	Built by developer. Previously controlled by one-way stop Functional Class: Collector ICD estimated from Google Maps linework.
Willimantic, CT Windham United States	Eastern Rd. / (driveway) (ECSU Campus by clock tower) (41.72001, -72.21691)	Neighborhood Traffic 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.
Stafford Springs, CT Tolland United States	Rte 32 / Rte 190 (41.95362, -72.30314)	Other Existing	All-Way Yield None	4 Approaches 0 Driveways 18.6523	Other (At-Grade) Multilane (2 Lane)	1890	Believed by some to be improperly signed and painted, though some roundabout features have been added in the past 10 years. Near railroad crossing. Year Completed estimated (1890?). ICD estimated from Google Maps linework.
Boulder, CO Boulder United States	Balsam Ave. / 14th St. (40.02675, -105.27840)	Neighborhood Traffic Circle Existing	All-Way Yield None	4 Approaches 0 Driveways 16.4619	Other (At-Grade) Single-Lane		ICD estimated from Google Maps linework.
Boulder, CO Boulder United States	Balsam Ave. / 15th St. (40.02675, -105.27660)	Neighborhood Traffic Circle Existing	All-Way Yield None	4 Approaches 0 Driveways 8.2310	Other (At-Grade) Single-Lane		ICD estimated from Google Maps linework.
Boulder, CO Boulder United States	Evergreen Ave. / 9th St. (40.03106, -105.28560)	Neighborhood Traffic Circle Existing	Unknown None	4 Approaches 0 Driveways 16.4609	Other (At-Grade) Single-Lane		ICD estimated from Google Maps linework.