Roundabouts Database Index

29411 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
Brampton, ON Peel Canada	Elbern Markell Dr. / Fort William Dr. (43.65595, -79.80336)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 30.2433	Other (At-Grade) Single-Lane	2009	Year Completed estimated (2009-2010). ICD estimated from Google Maps linework.
Brampton, ON Peel Canada	Royal West Dr. / Adamsville Rd. (43.65220, -79.80625)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 33.7018	Other (At-Grade) Single-Lane	2009	ICD estimated from Google Maps linework.
Brampton, ON Peel Canada	Royal West Dr. / Beacon Hill Dr. (43.65527, -79.81000)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 34.5642	Other (At-Grade) Single-Lane	2009	ICD estimated from Google Maps linework.
Brampton, ON Peel Canada	Longevity Rd. / Settlers Field Rd. (43.65233, -79.81352)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 29.3810	Other (At-Grade) Single-Lane	2017	ICD estimated from Google Maps linework.
Waterdown, ON Hamilton Canada	Skinner Rd. / Burke St. (43.33778, -79.88090)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 34.7464	Other (At-Grade) Single-Lane	2010	Year Completed estimated (2009-2012). ICD estimated from Google Maps linework.
Lincoln, ON Niagara Canada	King St. (Hwy 81) / Green Lane Rd. (43.17965, -79.50744)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 32.2240	Other (At-Grade) Single-Lane	2016	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
Niagara-on-the-Lake, ON Niagara Canada	Niagara Pkwy. / Portage Rd. (43.15820, -79.05083)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 28.7504	Other (At-Grade) Single-Lane	2004	Year Completed estimated (2002-2005). ICD estimated from Google Maps linework.
Gaithersburg, MD Montgomery Co. United States	Victory Farm Dr. / Girard St. (39.14648, -77.18493)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 25.9348	Other (At-Grade) Multilane (2 Lane, unspecified)	2006	Year Completed estimated (2005-2006). ICD estimated from Google Maps linework.
Leesburg, VA Loudoun Co. United States	Catoctin Cir. NE / Marshall Dr. NE (39.11906, -77.55260)	Traffic Calming Circle Existing	All-Way Yield None	4 Approaches 0 Driveways 19.4587	Other (At-Grade) Single-Lane	2007	ICD estimated from Google Maps linework.
Leesburg, VA Loudoun Co. United States	Catoctin Cir. NE / North St. NE (39.11677, -77.55249)	Traffic Calming Circle Existing	All-Way Yield None	4 Approaches 0 Driveways 17.6060	Other (At-Grade) Single-Lane	2007	ICD estimated from Google Maps linework.
Leesburg, VA Loudoun Co. United States	Upper Belmont Pl. / Riverpoint Dr. (39.08562, -77.49204)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 27.8113	Other (At-Grade) Single-Lane	2015	ICD estimated from Google Maps linework.
Leesburg, VA Loudoun Co. United States	Upper Belmont Pl. / Charlene Beth Dr. (39.09004, -77.48704)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 31.5175	Other (At-Grade) Single-Lane	2015	ICD estimated from Google Maps linework.
Clarksburg, MD Montgomery Co. United States	Clarksburg Rd. (MD 121) / (outlet mall entrance) (39.22844, -77.28869)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 49.9588	Other (At-Grade) Multilane (2 Lane, unspecified)	2015	ICD estimated from Google Maps linework.
Clarksburg, MD Montgomery Co. United States	Clarksburg Rd. (MD 121) / Cabin Branch Ave. (39.22689, -77.29051)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 46.2592	Other (At-Grade) Multilane (2 Lane, unspecified)	2015	ICD estimated from Google Maps linework.
Morgantown, WV Monongalia Co. United States	University Town Center Dr. / I-79 SB Ramps (39.63879, -80.00274)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 44.1471	Freeway Ramps (Grade-Separated) Multilane (3+ Lane)	2016	https://www.constructionequipmentguide.com/i-79-interchange-nears-completion-in-morgantown-wva/31295. ICD estimated from Google Maps linework.
Spokane, WA Spokane Co. United States	SR 902 / Geiger Blvd. (47.59406, -117.56858)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 88.5973	Other (At-Grade) Multilane (2 Lane, unspecified)	2019	Replaces previous intersection that was closer to the I-90 westbound off ramp. Open October 10, 2019. ICD estimated from Google Maps linework.
Spokane, WA Spokane Co. United States	SR 902 / I-90 WB Ramps (47.59335, -117.56750)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 33.0231	Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified)	2019	Opened October 10, 2019. ICD estimated from Google Maps linework.
Greensboro, NC Guilford Co. United States	Airpark Rd. / Albert Pick Rd. (36.07486, -79.94894)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 30.8900	Other (At-Grade) Single-Lane	2001	Year Completed estimated (1999-2002). ICD estimated from Google Maps linework.
Greensboro, NC Guilford Co. United States	Airpark Rd. / Abert Pick Rd. / Gallimore Dairy Rd. (36.07414, -79.94649)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 29.9250	Other (At-Grade) Single-Lane	2001	Year Completed estimated (1999-2002). ICD estimated from Google Maps linework.
Westerwood, NC Guilford Co. United States	E Lake Dr. / Garland Dr. (36.07915, -79.80705)	Other Existing	All-Way Yield None	3 Approaches 0 Driveways 26.0621	Other (At-Grade) Single-Lane		Painted splitter islands, lane changes to stay within circle. ICD estimated from Google Maps linework.
Suffolk, VA Suffolk City Co. United States	College Dr. / Harbour View Dr. / Armistead Rd. (36.89493, -76.43239)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 66.8605	Other (At-Grade) Multilane (2 Lane, unspecified)	2018	https://www.clarknexsen.com/project/college-drive-roundabout-suffolk-va/. ICD estimated from Google Maps linework.
St Francis, MN Anoka Co. United States	Bridge St. NW / Lake George Blvd. NW (45.38685, -93.34720)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 43.6174	Other (At-Grade) Single-Lane	2016	Yield controlled right-turn bypass lane on south leg. https://www.stfrancis.k12.mn.us/page.cfm?p=383&newsid=2777. ICD estimated from Google Maps linework.
St Francis, MN Anoka Co. United States	Bridge St. NW / Poppy St. NW / Rum River Blvd. NW (45.38710, -93.35243)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 38.5845	Other (At-Grade) Single-Lane	2016	https://www.stfrancis.k12.mn.us/page.cfm?p=383&newsid=2777. ICD estimated from Google Maps linework.
Willmar, MN Kandiyohi Co. United States	30th St. SW / 19th Ave. SW (45.10334, -95.08360)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways	Other (At-Grade) Single-Lane	2019	https://www.wctrib.com/news/traffic-and-construction/4647282-New-roundabout-on-west-edge-of-Willmar-is-officially-open.
Anoka, MN Anoka Co. United States	S 4th Ave. / Washington St. / Military Rd. (45.19165, -93.38535)	Roundabout Existing	All-Way Yield None	5 Approaches 0 Driveways 24.4090	Other (At-Grade) Single-lane w/ Traversable Central Island	2017	Painted pumpkin in center: https://www.facebook.com/CityofAnokaMN/photos/a.340051602702875/1707805759260779/?type=3. ICD estimated from Google Maps linework.
Fishers, IN Hamilton Co. United States	E 136th St. / Southeastern Pkwy. / (unknown) (39.98700, -85.91258)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 37.5184	Other (At-Grade) Multilane (2 Lane, unspecified)	2018	Intersection moved about 500 feet east. ICD estimated from Google Maps linework.
Bluffton, SC Beaufort Co. United States	Buckwater Place Blvd. / Innovation Dr. (32.27166, -80.91852)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 47.4623	Other (At-Grade) Single-Lane	2007	Year Completed estimated (2006-2008). 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.
Savannah, GA Chatham Co. United States	Robert B Miller Jr Rd. / (Gulfstream factory access) (32.13898, -81.19041)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 38.4298	Other (At-Grade) Single-Lane	2014	At-grade rail crossing with crossbucks only on two legs. ICD estimated from Google Maps linework.
Savannah, GA Chatham Co. United States	Robert B Miller Jr Rd. / (unknown) (32.13558, -81.18861)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 40.4539	Other (At-Grade) Single-Lane	2014	ICD estimated from Google Maps linework.
Mount Pleasant, SC Charleston Co. United States	Park Ave Blvd. / Carolina Park Blvd. (32.88732, -79.76454)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 42.1229	Other (At-Grade) Multilane (2 Lane, unspecified)	2007	ICD estimated from Google Maps linework.
Mount Pleasant, SC Charleston Co. United States	Carolina Park Blvd. / Banning St. / Crane Creek Dr. (32.89234, -79.76530)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 30.0861	Other (At-Grade) Single-Lane	2007	Unfinished (unpaved) but driveable in Nov 2007 (streetview). ICD estimated from Google Maps linework.
Guyton, GA Effingham Co. United States	Central Blvd. / Springfield Ave. (32.33029, -81.39279)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 40.3673	Other (At-Grade) Single-Lane	2018	https://www.wtoc.com/2018/09/25/guyton-roundabout-be-completed-by-december/. ICD estimated from Google Maps linework.
Tomball, TX Harris Co. United States	Invergarry Way. / Newcourt Blvd. (30.07099, -95.56441)	Other Existing	All-Way Yield None	4 Approaches 0 Driveways 80.7720	Other (At-Grade) Single-Lane		Very large diameter; operates as four T-intersections.
Coquitlam, BC Greater Vancouver Canada	Woolridge St. / (parking lot) (49.23188, -122.85288)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 28.8561	Other (At-Grade) Single-Lane	2012	Year Completed estimated (2011-2012). ICD estimated from Google Maps linework.
Fort Wayne, IN Allen Co. United States	Union Chapel Rd. / I-69 NB Ramps (41.20019, -85.10345)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 39.5396	Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified)	2013	https://www.in.gov/indot/3085.htm. ICD estimated from Google Maps linework.
Fort Wayne, IN Allen Co. United States	Union Chapel Rd. / I-69 SB Ramps (41.20018, -85.10484)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 33.2492	Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified)	2013	https://www.in.gov/indot/3085.htm. ICD estimated from Google Maps linework.
Fort Wayne, IN Allen Co. United States	Union Chapel Rd. / Auburn Rd. (41.20007, -85.11421)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 35.9452	Other (At-Grade) Multilane (2 Lane, unspecified)	2014	https://www.in.gov/indot/3085.htm. ICD estimated from Google Maps linework.
St Albert, AB Alberta Canada	Jensen Lake Blvd. / (unknown) (53.66511, -113.63856)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 33.2593	Other (At-Grade) Single-Lane	2015	ICD estimated from Google Maps linework.
Columbus, IN Bartholomew Co. United States	US 31 / E CR 400 S (39.14378, -85.84092)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 36.1249	Other (At-Grade) Single-Lane	2016	https://www.in.gov/indot/3445.htm. ICD estimated from Google Maps linework.
Whitehorse, YT Yukon Canada	Hamilton Blvd. / Lobird Rd. (60.68209, -135.07161)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 55.5569	Other (At-Grade) Single-Lane	2009	Year Completed estimated (2004-2010). ICD estimated from Google Maps linework.
Whitehorse, YT Yukon Canada	Mountain View Dr. / Whistle Bend Way (60.76324, -135.11374)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 53.0834	Other (At-Grade) Single-Lane	2011	Year Completed estimated (2011-2012). ICD estimated from Google Maps linework.
Whitehorse, YT Yukon Canada	Whistle Bend Way / Heiland Rd. (60.77055, -135.10876)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 67.6513	Other (At-Grade) Single-Lane	2012	Through and right-turn bypass lane. ICD estimated from Google Maps linework.
North Shore, HI Honolulu Co. United States	Kamehameha Hwy / Hwy 82 / Hwy 930 (21.57568, -158.10573)	Rotary Existing	Unknown Unknown	4 Approaches 0 Driveways 157.7116	Other (At-Grade) Multilane (2 Lane, unspecified)		ICD estimated from Google Maps linework.
North Shore, HI Honolulu Co. United States	Hwy 930 (Farrington Hwy.) / Goodale Ave. (21.56644, -158.12253)	Rotary Existing	Other Unknown	3 Approaches 0 Driveways 62.2001	Other (At-Grade) Single-Lane		Yielding on circulatory roadway. ICD estimated from Google Maps linework.
Kealakekua, HI Hawaii Co. United States	Halekii St. / Muli St. (19.51673, -155.92736)	Traffic Calming Circle Existing	One-Way/Two-Way Stop Unknown	4 Approaches 0 Driveways 18.0113	Other (At-Grade) Single-lane w/ Traversable Central Island		Stop control on side street. ICD estimated from Google Maps linework.
Kealakekua, HI Hawaii Co. United States	Halekii St. / Mamao St. (19.51783, -155.92400)	Traffic Calming Circle Existing	One-Way/Two-Way Stop Unknown	4 Approaches 0 Driveways 22.5140	Other (At-Grade) Single-lane w/ Traversable Central Island		Stop control on side street. ICD estimated from Google Maps linework.
Honningsvåg, Finnmark Nordkapp Norway	Nordkappgata / Holmen / Storgata (70.98206, 25.97053)	Roundabout Existing	All-Way Yield Unknown	3 Approaches 0 Driveways 14.0108	Other (At-Grade) Single-lane w/ Traversable Central Island		Believed to be the northernmost roundabout in the world. ICD estimated from Google Maps linework.
Joliet, IL Kendall Co. United States	Wildsprings Pkwy. / Onyx Ln. (41.55281, -88.28244)	Traffic Calming Circle Existing	Uncontrolled None	3 Approaches 0 Driveways 30.3882	Other (At-Grade) Single-Lane	2007	ICD estimated from Google Maps linework.
Joliet, IL Kendall Co. United States	Wildsprings Pkwy. / Waterbury Dr. (41.56095, -88.29127)	Traffic Calming Circle Existing	All-Way Stop None	4 Approaches 0 Driveways 18.7668	Other (At-Grade) Single-Lane	2005	ICD estimated from Google Maps linework.
Conway, AR Faulkner Co. United States	Van Ronkle St. / Markham St. / Chestnut St. (35.09176, -92.44000)	Roundabout Existing	All-Way Yield Rectangular Rapid Flashing Beacon (RRFB)	4 Approaches 0 Driveways 17.5903	Other (At-Grade) Single-lane w/ Traversable Central Island	2019	https://conwayarkansas.gov/news/conway-arkansas-build-25th-roundabout-construction-starts-monday/. ICD estimated from Google Maps linework.
Fort Wayne, IN Allen Co. United States	E Wallen Rd. / Auburn Rd. (41.16245, -85.11852)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 33.2684	Other (At-Grade) Single-Lane	2015	Some confusion on the date of construction. News article (link below) says a bridge and roundabout will be constructed in 2016, yet Streetview shows the roundabout done in late 2015 with the bridge still under construction. https://www.journalgazette.net/news/local/-2-5-million-OK-d-to-fix-Auburn-Road-5788893. ICD estimated from Google Maps linework.
Benton, AR Saline Co. United States	Alcoa Rd. / (unknown) (34.60175, -92.53431)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 46.2045	Other (At-Grade) Multilane (2 Lane, unspecified)	2017	ICD estimated from Google Maps linework.
Benton, AR Saline Co. United States	Alcoa Rd. / (unknown) (34.59911, -92.53440)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 50.1384	Other (At-Grade) Multilane (2 Lane, unspecified)	2017	ICD estimated from Google Maps linework.
Benton, AR Saline Co. United States	Alcoa Rd. / Boone Rd. (34.59647, -92.53457)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 43.2580	Other (At-Grade) Multilane (2 Lane, unspecified)	2017	ICD estimated from Google Maps linework.
Benton, AR Saline Co. United States	Alcoa Rd. / Sleepy Village Rd. (34.58876, -92.53480)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 47.1950	Other (At-Grade) Multilane (2 Lane, unspecified)	2017	ICD estimated from Google Maps linework.
West Monroe, LA Ouachita Par. United States	Arkansas Rd. (LA 616) / Warren Dr. (LA 617) (32.53023, -92.16172)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 48.3335	Other (At-Grade) Multilane (2 Lane, unspecified)	2019	https://www.knoe.com/content/news/West-Monroe-drivers-pumping-their-brakes-at-new-Arkansas-Rd-roundabouts-559521961.html. ICD estimated from Google Maps linework.
Cedar Rapids, IA Linn Co. United States	Johnson Ave. NW / Wiley Blvd. NW (41.97123, -91.72580)	Roundabout Existing	All-Way Yield Rectangular Rapid Flashing Beacon (RRFB)	4 Approaches 0 Driveways 22.1990	Other (At-Grade) Single-Lane	2018	http://www.cedar-rapids.org/local_government/departments_g_-_v/public_works/johnson_avenue_nw.php ICD estimated from Google Maps linework.
Grimes, IA Polk Co. United States	NE Beaverbrooke Blvd. / NE Heritage Dr. (41.70101, -93.78190)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 57.0699	Other (At-Grade) Multilane (2 Lane, unspecified)	2017	Year Completed estimated (2016-2017). ICD estimated from Google Maps linework.
Grimes, IA Polk Co. United States	NE Beaverbrooke Blvd. / NE Park Dr. / NE Park St. (41.70201, -93.78755)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 41.0184	Other (At-Grade) Multilane (2 Lane, unspecified)	2017	Year Completed estimated (2016-2017). ICD estimated from Google Maps linework.
Johnston, IA Polk Co. United States	NW 70th Ave. / NW 107th St. (NE Edgewood Dr.) (41.68834, -93.76342)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 39.2433	Other (At-Grade) Multilane (2 Lane, unspecified)	2016	ICD estimated from Google Maps linework.
Johnston, IA Polk Co. United States	NW 70th Ave. / NW 100th St. (41.68834, -93.75589)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 42.8109	Other (At-Grade) Multilane (2 Lane, unspecified)	2017	Year Completed estimated (2016-2017). ICD estimated from Google Maps linework.
Johnston, IA Polk Co. United States	NW 100 St. / NW 68th Ave. (41.68333, -93.75594)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 36.5705	Other (At-Grade) Multilane (2 Lane, unspecified)	2017	Year Completed estimated (2016-2017). ICD estimated from Google Maps linework.
Johnston, IA Polk Co. United States	NW 100th St. / Ashton Dr. (41.67978, -93.75594)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 36.5725	Other (At-Grade) Multilane (2 Lane, unspecified)	2017	ICD estimated from Google Maps linework.
Johnston, IA Polk Co. United States	NW 100th St. / Newport Vista Dr. (41.67795, -93.75591)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 35.6815	Other (At-Grade) Multilane (2 Lane, unspecified)	2017	ICD estimated from Google Maps linework.
Marion, IA Linn Co. United States	6th Ave. / 15th St. (42.03243, -91.59397)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways	Other (At-Grade) Single-Lane	2019	Year Completed estimated (2018-2019).
Muscatine, IA Muscatine Co. United States	Cedar St. / Logan St. (41.43575, -91.06473)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 27.7570	Other (At-Grade) Single-Lane	2015	Year Completed estimated (2014-2016). ICD estimated from Google Maps linework.
Ottumwa, IA Wapello Co. United States	Wapello St. / Albia Rd. / N Ferry St. (41.00821, -92.43239)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 36.9516	Other (At-Grade) Unknown	2019	https://www.facebook.com/cityofottumwa/posts/10157576935583243?comment_id=10157577136173243&comment_tracking=%7B"tn"%3A"R"%7D ICD estimated from Google Maps linework.
Ottumwa, IA Wapello Co. United States	N Ferry St. / Richmond Ave. (41.00736, -92.43270)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 19.8280	Other (At-Grade) Unknown	2018	Opened summer 2018. https://www.google.com/maps/d/viewer?mid=12miH60MU576dGTib4lVgSXtLX2U&hl=en&gl=us&ie=UTF8&oe=UTF8&msa=0&ll=41.0083054%2C-92.43248460000001&z=17 ICD estimated from Google Maps linework.
Manhattan, KS Riley Co. United States	S Scenic Dr. / Skyway Dr. / K-18 WB Ramps (39.15547, -96.64423)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 74.0900	Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified)	2013	Year Completed estimated (2012-2013)/ ICD estimated from Google Maps linework.
Manhattan, KS Riley Co. United States	S Scenic Dr / K-18 EB Ramps (39.15310, -96.64301)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 57.4217	Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified)	2013	Raindrop shape. Year Completed estimated (2012-2013). ICD estimated from Google Maps linework.
Laramie, WY Albany Co. United States	N 22nd St. / Cumulus Dr. (41.33367, -105.56710)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 30.4910	Other (At-Grade) Single-Lane	2015	Year Completed estimated (2015-2016). ICD estimated from Google Maps linework.
Loveland, CO Larimer Co. United States	Rossum Dr. / Mariana Hills Cir. / Mariana Ridge Ct. (40.40225, -105.14134)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways	Other (At-Grade) Single-Lane	2017
Loveland, CO Larimer Co. United States	Rossum Dr. / Cedar Valley Dr. / St. Andrews Dr. (40.40005, -105.14791)	Traffic Calming Circle Existing	All-Way Yield None	4 Approaches 0 Driveways 20.0096	Other (At-Grade) Single-Lane		No splitter islands. Completed before 1999. ICD estimated from Google Maps linework.
Lévis, QC Lévis Canada	Rue Christophe-Colomb / Rue Louis H. La Fontaine / Rue de la Pascaline / Rue Charles Rodrigue (46.77829, -71.16995)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 39.2594	Other (At-Grade) Single-Lane	2013	ICD estimated from Google Maps linework.
Saint-Augustin-de-Desmaures, QC Quebec Canada	Rue de l'Hétrière / Rue Lionel-Groulx (46.74435, -71.39031)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 25.3710	Other (At-Grade) Single-Lane	2011	Year Completed estimated (20120-2012). ICD estimated from Google Maps linework.
Quebec, QC Quebec Canada	Rue Claire Bonenfant / Rue des Aïeux / Rue Marie-De Lamarre (46.84426, -71.31036)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 17.9718	Other (At-Grade) Single-Lane	2012	ICD estimated from Google Maps linework.
Mascouche, QC Les Moulins Regional County Municipality Canada	Avenue de l'Esplanade / Avenue Bourque (45.72771, -73.62837)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 46.6885	Other (At-Grade) Multilane (2 Lane, unspecified)	2007	Year Completed estimated (2005-2008). ICD estimated from Google Maps linework.
Sainte-Julie, QC Marguerite-D'Youville Regional County Municipality Canada	Chemin du Fer-à-Cheval / Rue Murano / Avenue Jules-Choquet (45.58708, -73.32675)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 30.9254	Other (At-Grade) Single-Lane	2007	Year Completed estimated (before 2009). ICD estimated from Google Maps linework.
Beloeil, QC La Vallée-du-Richelieu Regional County Municipality Canada	Avenue Armand-Lamoureux / Avenue Carmen-Bienvenu / Rue Rémi-Dansereau / Rue Adrian-Provencher (45.58948, -73.20364)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 41.7892	Other (At-Grade) Single-Lane	2010	ICD estimated from Google Maps linework.
Beloeil, QC La Vallée-du-Richelieu Regional County Municipality Canada	Boulevard Yvon-l'Heureux N / Rue Saint-Jean-Baptiste (45.58079, -73.21466)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 40.1239	Other (At-Grade) Single-Lane	2008	Year Completed estimated (2005-2009). ICD estimated from Google Maps linework.
Longueuil, QC Longueuil Canada	Boulevard de Montarville / Rte 132 WB Ramps / (transit center) (45.60163, -73.45036)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 41.7802	Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified)	2006	Year Completed estimated (2004-2007). ICD estimated from Google Maps linework.
Beauharnois, QC Beauharnois-Salaberry Regional County Municipality Canada	Chemin St-Louis E / Rte 236 (45.28763, -73.88435)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 46.2147	Other (At-Grade) Single-Lane	2012	Year Completed estimated (2011-2013). ICD estimated from Google Maps linework.
Beauharnois, QC Beauharnois-Salaberry Regional County Municipality Canada	Chemin du Canal E / Autoroute 30 WB Ramps (45.30771, -73.96127)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 52.9181	Freeway Ramps (Grade-Separated) Single-Lane	2012	Year Completed estimated (2010-2013). ICD estimated from Google Maps linework.
Massena, NY St. Lawrence Co. United States	Center St. / Parker Ave. (44.93393, -74.88746)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 35.5106	Other (At-Grade) Single-Lane	2017	https://www.nny360.com/news/massena-roundabout-open-to-traffic/article_e871f943-583b-5820-a528-ca33bb8ee098.html. Previous intersection was a large triangle with a one-way road on one side, so no control signage. ICD estimated from Google Maps linework.
Cornwall, ON Stormont, Dundas and Glengarry Canada	Brookdale Ave. / 7th St. W (45.02273, -74.74777)	Rotary Existing	Other None	4 Approaches 0 Driveways 139.2902	Other (At-Grade) Multilane (2 Lane, unspecified)		Yield signs within circulatory roadway at Brookdale approaches. ICD estimated from Google Maps linework.
Calgary, AB Alberta Canada	Valley Ridge Blvd. NW / Hwy 1 (Trans Canada Hwy) WB Offramp (51.08997, -114.24906)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 35.2574	Freeway Ramps (Grade-Separated) Single-Lane	2006	Year Completed estimated (2005-2007). ICD estimated from Google Maps linework.
Aberdeen, MD Harford Co. United States	Old Philadelphia Rd. (MD 7) / Perryman Rd. (MD 159) (39.48791, -76.19155)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 37.7911	Other (At-Grade) Single-Lane	2019	https://www.facebook.com/pg/Harford-County-Roundabouts-308793279204833/posts/ ICD estimated from Google Maps linework.
Frederick, MD Frederick Co. United States	Jefferson Pike (MD 180) / Mt Zion Rd. (39.38286, -77.48054)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 36.9250	Other (At-Grade) Single-Lane	2019	Opened August 2019. https://www.fredericknewspost.com/news/politics_and_government/public_safety/md-roundabout-opened/article_e67c26f7-ac5c-5931-b2e0-9e68faaa77d7.html ICD estimated from Google Maps linework.
Kensington, CA Contra Costa Co. United States	Kensington Circle (Colusa Ave. / Oak View Ave. / Berkeley Park Blvd.) (37.89957, -122.28708)	Other Existing	All-Way Stop None	6 Approaches 0 Driveways 30.1578	Other (At-Grade) Single-Lane		Stop control, parking along circulatory roadway. In 1992 the central island was a narrow oval on the NW-SE diagonal and traffic moved too fast. Over the years Contra Costa County has widened the island, closer to a circle, with paint and rumble strips, and slowed the traffic. ICD estimated from Google Maps linework.
Boise, ID Ada Co. United States	Fort St. / Robbins Rd. / N 3rd St. (43.61644, -116.19328)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 32.8572	Other (At-Grade) Single-Lane	2019	https://www.cityofboise.org/departments/planning-and-development-services/robbins-roundabout/ ICD estimated from Google Maps linework.
North Liberty, IA Johnson Co. United States	N Front St. / N Bend Dr. (41.75695, -91.59798)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 47.2199	Other (At-Grade) Single-Lane	2019	Completed September 2019. The adjacent dead-end road to the west has been extended up to connect with Front Street at a 90-degree angle across from the existing commercial entrance drive on the east side of Front Street. In the NW quadrant of the roundabout, the farm field site has been redeveloped as a new elementary school. ICD estimated from Google Maps linework.
Coralville, IA Johnson Co. United States	Commerce Dr. / Commercial Park (41.69560, -91.61393)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 39.2389	Other (At-Grade) Single-Lane	2014	ICD estimated from Google Maps linework.
Coralville, IA Johnson Co. United States	12th Av. / Holiday Rd. (41.69491, -91.58287)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 21.4032	Other (At-Grade) Single-lane w/ Traversable Central Island	2015	Year Completed estimated (2014-2016). ICD estimated from Google Maps linework.
Coralville, IA Johnson Co. United States	E 7th St. / E 2nd Ave. (41.67892, -91.56378)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 43.7092	Other (At-Grade) Single-Lane	2019	Opened to traffic August 2019. East leg will re-open October 2019; north leg open to traffic summer 2020. ICD estimated from Google Maps linework.
Coralville, IA Johnson Co. United States	Oakdale Blvd. / Jones Blvd. (41.70758, -91.61387)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 37.4483	Other (At-Grade) Single-Lane	2015	Year Completed estimated (2014-2016). ICD estimated from Google Maps linework.
Port Elgin, NB Westmorland Canada	Trans Canada Hwy / Hwy 15 / Shemogue Rd. (46.05419, -64.09329)	Rotary Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 123.4968	Other (At-Grade) Single-Lane		ICD estimated from Google Maps linework.
Richmond, BC Greater Vancouver Canada	Bayview St. / Easthope Ave. (49.12328, -123.17882)	Other Existing	All-Way Yield None	3 Approaches 0 Driveways 21.8850	Other (At-Grade) Single-Lane		No splitter islands. ICD estimated from Google Maps linework.
Tsawwassen, BC Greater Vancouver Canada	Crescent Dr. / Westminster Ave. (49.10197, -123.07218)	Other Existing	All-Way Yield None	3 Approaches 0 Driveways 24.0000	Other (At-Grade) Single-Lane		Little entry deflection. Year Completed unknown (before 2003).