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
Concord, NH Merrimack Co. United States	N. State St. / Franklin St. (43.21304, -71.54215)	Roundabout Existing	All-Way Yield Unknown	5 Approaches 0 Driveways 23.5019	Other (At-Grade) Single-Lane	2009	Fifth leg is departure only into frontage road. ICD estimated from Google Maps linework.
Concord, NH Merrimack Co. United States	Centre St. / Liberty St. (43.20410, -71.54851)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 23.5054	Other (At-Grade) Single-Lane	2008	ICD estimated from Google Maps linework.
Concord, MA Middlesex Co. United States	Rte 2 (Union Tpke-Concord Tpke) / Rte 2A / Barretts Mill Rd. / Commonwealth Ave. (42.46728, -71.39721)	Rotary Existing	All-Way Yield None	5 Approaches 0 Driveways 100.4354	Other (At-Grade) Multilane (2 Lane, unspecified)		Infamous Concord rotary. ICD estimated from Google Maps linework.
Concord, CA Contra Costa Co. United States	Landana Dr. / Mulberry Dr. (37.97886, -121.99430)	Traffic Calming Circle Existing	All-Way Yield None	3 Approaches 0 Driveways 16.0041	Other (At-Grade) Single-Lane		ICD estimated from Google Maps linework.
Concord, NC Cabarrus Co. United States	Cabarrus Ave. / Old Charlotte Rd. / Cascade Dr. (35.40025, -80.59350)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 41.8617	Other (At-Grade) Single-Lane	2007	TIP project. ICD estimated from Google Maps linework.
Concord, NC Mecklenburg Co. United States	Christenbury Rd. / Millstream Ridge Dr. (35.38115, -80.74506)	Roundabout Existing	Unknown Unknown	4 Approaches 0 Driveways 27.2652	Other (At-Grade) Single-Lane	2003	Developer subdivision. ICD estimated from Google Maps linework.
Concord, NH Merrimack Co. United States	Manor Rd. / Abbott Rd. (43.26422, -71.57349)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 32.0040	Other (At-Grade) Single-Lane	2018	https://www.nh.gov/dot/org/projectdevelopment/highwaydesign/roundabouts/documents/nh_roundabouts_list_details_web_version.pdf
Concord, VA Campbell Co. United States	Village Hwy. / Doss Rd. / Spring Mill Rd. (37.33438, -78.98112)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways	Other (At-Grade) Single-Lane	2018	Year Completed estimated (2017-2019).
Concord, NH Merrimack Co. United States	W Portsmouth St. / Mountain Rd. / Shawmut St. / East Side Dr. (43.23702, -71.53564)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 29.5834	Other (At-Grade) Single-Lane	2017	ICD estimated from Google Maps linework.
Concepción, Bio-Bio Concepción Province Chile	Avenida Los Lleuques / Calle Rio Calle Calle / Avenida Siete Lagunas (-36.78509, -73.04292)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways	Other (At-Grade) Single-Lane
Concepción, Bio-Bio Concepción Province Chile	Calle Ramón Carrasco / Calle Nueva Dos / Calle C (-36.78087, -73.05193)	Roundabout Existing	All-Way Yield None	3 Approaches 1 Driveways	Other (At-Grade) Single-Lane
Concepción, Bio-Bio Concepción Province Chile	Rotonda Aeropuerto Carriel Sur [Avenida Jorge Alessandri Rodriguez / Avenida Jorge Alessandri / Camino al Aeropuerto Carriel Sur] (-36.77989, -73.05833)	Rotary Existing	All-Way Yield None	3 Approaches 0 Driveways	Other (At-Grade) Multilane (3+ Lane)		Concentric circulatory roadway striping.
Concepción, Bio-Bio Concepción Province Chile	Rotonda Paicavi [Avenida Los Carrera / Avenida Paicavi] (-36.82008, -73.04424)	Signalized Roundabout/Circle Existing	Signal None	4 Approaches 0 Driveways	Other (At-Grade) Multilane (3+ Lane)		Hamburger shaped.
Comstock Township, MI Kalamazoo Co. United States	S Sprinkle Rd. / I-94 WB Off-Ramp / E Cork St. (42.26233, -85.53094)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 62.4840	Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified)	2015
Commerce City, CO Adams Co. United States	Turnberry Pkwy. / Revere St. (39.89062, -104.83800)	Roundabout Existing	All-Way Yield Unknown	3 Approaches 0 Driveways 36.5760	Other (At-Grade) Single-Lane	2005	Year Completed estimated (2004-2005).
Commerce City, CO Adams Co. United States	E 105th Ave. / Uvalda St. (39.88673, -104.83520)	Roundabout Existing	All-Way Yield Unknown	3 Approaches 0 Driveways 38.1000	Other (At-Grade) Single-Lane	2003	Year Completed estimated (2002-2003).
Commerce City, CO Adams Co. United States	Wheeling St. / E 106th Ave. / Victor St. (39.88895, -104.83121)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 38.1000	Other (At-Grade) Single-Lane	2003	Painted splitter islands.
Commerce City, CO Adams Co. United States	Walden St. / E 105th Ave. (39.88769, -104.77644)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 44.1960	Other (At-Grade) Single-Lane	2005	Year Completed estimated (2004-2005).
Commerce City, CO Adams Co. United States	E 112th Ave. / Potomac St. (39.89963, -104.82770)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 48.7680	Other (At-Grade) Single-Lane	2018	Year Completed estimated (2017-2018).
Commerce City, CO Adams Co. United States	E 112th Ave. / (parking) (39.89972, -104.82580)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 48.7680	Other (At-Grade) Single-Lane	2018	Year Completed estimated (2017-2018).
Commerce City, CO Adams Co. United States	E 119th Ave. / Oakland St. / (unknown) (39.91279, -104.84949)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 28.9560	Other (At-Grade) Single-Lane	2004	Year Completed estimated (2003-2004). East leg added 2008-2010.
Commerce City, CO Adams Co. United States	E 121st Ave. / Jasper St. (39.91627, -104.80425)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 36.5760	Other (At-Grade) Single-Lane	2003
Commerce, GA Banks Co. United States	GA 59 / Segars Rd. (34.29473, -83.39858)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane	2021	https://accesswdun.com/article/2021/2/980363/new-ga-59-roundabout-will-facilitate-safe-travel-near-new-industries
Commerce, MI Oakland Co. United States	Bogie Lake Rd. / Cooley Lake Rd. (42.61317, -83.49239)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 30.7635	Other (At-Grade) Single-Lane	2008	Yield-controlled right=turn bypass lanes on south and west legs. ICD estimated from Google Maps linework.
Colyton, NSW Penrith Australia	Roper Rd. / Carlisle Ave. (-33.78566, 150.80606)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways	Other (At-Grade) Multilane (2 Lane, unspecified)
Colwood, BC Capital Canada	Latoria Rd. / Veterans Memorial Pkwy. / Medalist Ave. (48.40853, -123.50873)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways	Other (At-Grade) Unknown	2023	https://www.colwood.ca/news-events/news/2023-12-15-000000/now-open-new-roundabout-latoria-road-and-veterans-memorial
Colville, WA Stevens Co. United States	US 395 (Main St.) / E Hawthorne Ave. / Railroad Ave. / S Washington St. (48.53631, -117.90580)	Roundabout Existing	All-Way Yield None	5 Approaches 0 Driveways 68.5800	Other (At-Grade) Single-Lane	2003	Opened March 2003. Hotdog/racetrack shape. ICD = 225 ft x 120 ft.
Colville, WA Stevens Co. United States	SR 395 / Railroad Ave. (48.54959, -117.91250)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 37.9494	Other (At-Grade) Single-Lane	2007	Opened October 2007. ICD estimated from Google Maps linework.
Columbus, NC Polk Co. United States	NC 108 / I-26 EB Ramps (35.24493, -82.20628)	Roundabout Existing	Unknown Unknown	4 Approaches 0 Driveways 35.1144	Freeway Ramps (Grade-Separated) Single-Lane	2004	Part of interchange - two-lane bridge. ICD estimated from Google Maps linework.
Columbus, NC Polk Co. United States	NC 108 / I-26 WB Ramps (35.24627, -82.20499)	Roundabout Existing	Unknown Unknown	4 Approaches 0 Driveways 34.1384	Freeway Ramps (Grade-Separated) Single-Lane	2007	Part of interchange - two-lane bridge. ICD estimated from Google Maps linework.
Columbus, GA Muscogee Co. United States	Yellow Pine Rd. / Calumet Dr. (32.54861, -84.81565)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 27.1820	Other (At-Grade) Single-Lane	2011	Completed June 2011. Functional Class: Collector ICD estimated from Google Maps linework.
Columbus, GA Muscogee Co. United States	Transport Blvd. / Cargo Dr. (32.51770, -84.87556)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 55.3899	Other (At-Grade) Single-Lane	2012	Completed March 2012. Separate right-turn lane on northwest leg. Previously controlled by two-way stop Functional Class: Local ICD estimated from Google Maps linework.
Columbus, GA Muscogee Co. United States	18th Ave. / Garrard St. (32.48277, -84.96620)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 41.3067	Other (At-Grade) Single-Lane	2012	Elongated central island. Functional Class: Local ICD estimated from Google Maps linework.
Columbus, GA Muscogee Co. United States	Ashley Station Blvd. / Olive St. (32.48650, -84.97856)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 24.1785	Other (At-Grade) Single-Lane	2007	Completed February 2007. Previously controlled by two-way stop Functional Class: Local ICD estimated from Google Maps linework.
Columbus, GA Muscogee Co. United States	Antietam Dr. / (apartment entrance) (32.42582, -84.91289)	Roundabout Existing	All-Way Yield None	3 Approaches 1 Driveways 22.1786	Other (At-Grade) Single-Lane	2008	Completed April 2008. Functional Class: Collector ICD estimated from Google Maps linework.
Columbus, GA Muscogee Co. United States	Antietam Dr. / Lexington Lake Dr. (32.42737, -84.91043)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 25.2025	Other (At-Grade) Single-Lane	2010	Completed April 2010. Functional Class: Collector ICD estimated from Google Maps linework.
Columbus, GA Muscogee Co. United States	Grove Park Dr. / (apartment entrance) (32.55886, -84.97034)	Roundabout Existing	All-Way Yield None	4 Approaches 2 Driveways 40.2651	Other (At-Grade) Single-Lane	2006	Completed June 2006. Functional Class: Local ICD estimated from Google Maps linework.
Columbus, GA Muscogee Co. United States	Gazebo Way / Vine St. (32.42785, -84.94247)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 23.1862	Other (At-Grade) Single-Lane	2009	Completed November 2009. Functional Class: Local ICD estimated from Google Maps linework.
Columbus, GA Muscogee Co. United States	Preservation Way / Broadleaf Ln. (32.56264, -84.84101)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 42.2765	Other (At-Grade) Single-Lane	2007	Completed May 2007. Functional Class: Local ICD estimated from Google Maps linework.
Columbus, GA Muscogee Co. United States	Wellington Trace / Wellington Way (32.57888, -84.90186)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 44.2817	Other (At-Grade) Single-Lane	2005	Completed April 2005. Functional Class: Local ICD estimated from Google Maps linework.
Columbus, GA Muscogee Co. United States	Whitesville Walk / Woodville Dr. (32.55371, -84.97279)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 29.1939	Other (At-Grade) Single-Lane	2007	Completed March 2007. Functional Class: Local ICD estimated from Google Maps linework.
Columbus, GA Muscogee Co. United States	Warm Springs Rd. / Blackmon Rd. (32.54701, -84.89021)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 23.1555	Other (At-Grade) Single-Lane	2011	Completed February 2011. Functional Class: Arterial ICD estimated from Google Maps linework.
Columbus, GA Muscogee Co. United States	St. Marys Rd. / Northstar Dr. / Lakefront Dr. (32.44089, -84.91252)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 35.2782	Other (At-Grade) Multilane (2 Lane, unspecified)	2015	Single-lane except for two circulating lanes in one section (although fed by single-lane entries). ICD estimated from Google Maps linework.
Columbus, GA Muscogee Co. United States	Schatulga Rd. / Corporate Ridge Pkwy. (32.50364, -84.86957)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 35.2536	Other (At-Grade) Single-Lane	2014	ICD estimated from Google Maps linework.
Columbus, GA Muscogee Co. United States	S Lumpkin Rd. / Chattahoochee Riverwalk (32.40150, -84.95556)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 50.4194	Other (At-Grade) Single-Lane	2014	ICD estimated from Google Maps linework.
Columbus, GA Muscogee Co. United States	14th St. / Front Ave. (32.47244, -84.99457)	Roundabout Existing	All-Way Yield None	2 Approaches 0 Driveways 20.1519	Other (At-Grade) Single-Lane	2016	ICD estimated from Google Maps linework.
Columbus, OH Franklin Co. United States	Groveport Rd. / Old Rathmell Ct. / Alum Creek Dr. access (39.86733, -82.93329)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 44.9175	Other (At-Grade) Multilane (2 Lane, unspecified)	2013	Part of intersection complex with grade separation. Right-turn bypass lane on south leg. Year Completed estimated (2012-2014). ICD estimated from Google Maps linework.
Columbus, OH Franklin Co. United States	Groveport Rd. / Alum Creek Rd. access / (parking lot) (39.86872, -82.93737)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 37.5833	Other (At-Grade) Single-Lane	2013	Right-turn bypass lane on west leg. Year Completed estimated (2012-2014). ICD estimated from Google Maps linework.
Columbus, OH Franklin Co. United States	N Hamilton Rd. / Clark State Rd. (40.02397, -82.86595)	Roundabout Existing	All-Way Yield Rectangular Rapid Flashing Beacon (RRFB)	3 Approaches 0 Driveways 45.7200	Other (At-Grade) Multilane (2 Lane, unspecified)	2016
Columbus, OH Franklin Co. United States	N Hamilton Rd / Parc Dr. (40.03180, -82.86552)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 44.1960	Other (At-Grade) Multilane (2 Lane, unspecified)	2016
Columbus, OH Franklin Co. United States	US 62 (Johnstown Rd.) / Morse Rd. (40.05465, -82.84182)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 53.0222	Other (At-Grade) Multilane (2 Lane, unspecified)	2008	Skewed alignment realigned. High-speed rural approaches. Year Completed estimated (2007-2009). ICD estimated from Google Maps linework.
Columbus, OH Franklin Co. United States	International Gateway / Stelzer Rd. / Red Lot parking access (39.99937, -82.90639)	Roundabout Existing	All-Way Yield Unknown	3 Approaches 0 Driveways 36.5967	Other (At-Grade) Single-Lane	2008	On site of John Glenn Columbus International Airport. Year Completed estimated (2007-2009). ICD estimated from Google Maps linework.
Columbus, IN Bartholomew Co. United States	11th St. / Lindsey St. / Brown St. (39.20836, -85.92443)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 44.4206	Other (At-Grade) Multilane (2 Lane, unspecified)	2008	At-grade rail crossing on west leg (flashers, no gates). 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.
Columbus, OH Franklin Co. United States	Dublin-Granville Rd. / Albany Park Dr. (40.07893, -82.84812)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 38.1000	Other (At-Grade) Single-Lane	2019
Columbus, MN Anoka Co. United States	Lake Dr. NE / (unknown) (45.25047, -93.02965)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 37.8368	Other (At-Grade) Single-Lane	2019	Year Completed estimated (2018-2019). ICD estimated from Google Maps linework.
Columbus, GA Muscogee Co. United States	GA 219 (River Rd.) / Green Island Dr. / Bradley Park Dr. / Cascade Rd. (32.52817, -84.99224)	Roundabout Existing	All-Way Yield None	5 Approaches 0 Driveways 52.3625	Other (At-Grade) Single-Lane	2019	https://www.wrbl.com/news/local-news/river-road-roundabout-opens-monday-afternoon-first-test-comes-tuesday-morning/ ICD estimated from Google Maps linework.
Columbus, GA Muscogee Co. United States	Blackmon Rd. / Greystone Rd. (32.55196, -84.89764)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 39.6240	Other (At-Grade) Single-Lane	2016	Year Completed estimated (2014-2016).
Columbus, GA Muscogee Co. United States	Flat Rock Rd. / Midland Commons Blvd. (32.54189, -84.87478)	Other Existing	All-Way Yield None	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Multilane (2 Lane, 2x1 max)	2021	Lane changes required to exit. Year Completed estimated (2022-2022).
Columbus, GA Muscogee Co. United States	Flat Rock Rd. / (unknown) (32.54468, -84.87492)	Other Existing	All-Way Yield None	4 Approaches 0 Driveways 41.1480	Other (At-Grade) Multilane (2 Lane, 2x1 max)	2021	Lane changes required to exit. Year Completed estimated (2020-2022).
Columbus, NE Platte Co. United States	41st Ave. / Discoverer Dr. (41.45678, -97.37745)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 36.5760	Other (At-Grade) Single-Lane	2015
Columbus, MS Lowndes Co. United States	Military Rd. / US 82 EB Ramps (33.51801, -88.41368)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 0.0000	Freeway Ramps (Grade-Separated) Single-Lane	2020	https://cdispatch.com/news/2020-11-19/military-road-roundabout-project-to-reach-completion-by-end-of-november/
Columbus, MS Lowndes Co. United States	Military Rd. / US 82 WB Ramps (33.51915, -88.41193)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 0.0000	Freeway Ramps (Grade-Separated) Single-Lane	2020	https://cdispatch.com/news/2020-11-19/military-road-roundabout-project-to-reach-completion-by-end-of-november/
Columbus, OH Delaware Co. United States	Lazelle Rd. / S Old State Rd. / Storrow Rd. (40.13638, -83.00269)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 54.8640	Other (At-Grade) Multilane (2 Lane, unspecified)	2021
Columbus, MS Lowndes Co. United States	Main St. / 2nd St. (33.49465, -88.43198)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane	2021	https://cdispatch.com/news/2021-01-09/photo-downtown-roundabout-opens/
Columbus, OH Franklin Co. United States	Clark State Rd. / Reynoldburg-New Albany Rd. (40.04370, -82.80916)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Multilane (2 Lane, unspecified)	2020
Columbus, MI St. Clair Co. United States	Gratiot Ave. / Palms Rd. (42.85156, -82.63709)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane	2021	https://www.thetimesherald.com/story/news/2021/09/29/roundabout-palms-gratiot-open-traffic-week-columbus-twp/5913286001/
Columbus, GA Muscogee Co. United States	Cusseta Rd. / Fort Benning Rd. / Brennan Rd. / Lakeside Dr. (32.43741, -84.94018)	Roundabout Existing	All-Way Yield None	5 Approaches 0 Driveways 57.9120	Other (At-Grade) Multilane (2 Lane, unspecified)	2020	https://chattvoice.com/new-south-columbus-roundabout-to-open-next-week-p2277-1.htm
Columbine, CO Jefferson Co. United States	S. Simms St. / Nelson St. (39.64159, -105.12910)	Roundabout Existing	Unknown Unknown	4 Approaches 0 Driveways 38.6271	Other (At-Grade) Multilane (2 Lane, unspecified)	2003	Right turn bypass lanes on three legs. ICD estimated from Google Maps linework.
Columbine, CO Jefferson Co. United States	S. Simms St. / W. Quincy Ave. (39.63865, -105.12860)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 34.0301	Other (At-Grade) Multilane (2 Lane, unspecified)	2002	ICD estimated from Google Maps linework.
Columbiana, OH Columbiana Co. United States	SR 164 (Lisbon St. - N Main St.) / S Main St. / E Park Ave. (40.88864, -80.69362)	Other Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane		Diamond shaped. Parking along circulatory roadway.
Columbia Heights, MN Anoka Co. United States	39th Ave. NE / Jefferson St. NE (45.03828, -93.25522)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 33.7581	Other (At-Grade) Single-Lane	2006	ICD estimated from Google Maps linework.
Columbia, MD Howard Co. United States	Harpers Farm Rd. / Campus Dr. (39.21534, -76.88023)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 31.4614	Other (At-Grade) Single-Lane	2003	Originally had 4 legs. ICD estimated from Google Maps linework.
Columbia, MO Boone Co. United States	Bass Ave. / S Williams St. (38.94899, -92.31709)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 27.8651	Other (At-Grade) Single-Lane	2011	ICD estimated from Google Maps linework.
Columbia, MO Boone Co. United States	Business Loop 70 / I-70 WB On-Ramp (38.96647, -92.35328)	Roundabout Existing	All-Way Yield Unknown	2 Approaches 1 Driveways 35.2871	Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified)	2016	Replaced older roundabout that was built in 1996. ICD estimated from Google Maps linework.
Columbia, MO Boone Co. United States	Business Loop 70 / I-70 EB Ramps / Interstate 70 Dr. SW (38.96640, -92.35032)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 46.4304	Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified)	2016	ICD estimated from Google Maps linework.
Columbia, MO Boone Co. United States	Business Loop 70 / I-70 WB Ramps / Creasy Springs Rd. (38.96655, -92.35241)	Roundabout Removed	All-Way Yield Unknown	5 Approaches 0 Driveways 94.7178	Freeway Ramps (Grade-Separated) Single-Lane	1996	First roundabout in Missouri by Missouri DOT. Originally built in 1996 per article: https://www.voxmagazine.com/news/all-about-roundabouts-in-columbia/article_93724b2b-8b20-5228-b4de-315c5c3d2004.html. Replaced with roundabout to immediate west. ICD estimated from Google Maps linework.
Columbia, MD Howard Co. United States	Banneker Rd. / Cul-de-sac (39.21141, -76.87041)	Traffic Calming Circle Existing	Unknown Unknown	3 Approaches 0 Driveways 17.5824	Other (At-Grade) Single-Lane		Functional Class: Local ICD estimated from Google Maps linework.
Columbia, MD Howard Co. United States	Trotter Rd. / South Wind Cir. (39.20956, -76.91891)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 23.1353	Other (At-Grade) Single-Lane	1997	Functional Class: Collector. Year Completed estimated (1993-2001). 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.
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.
Columbia, MD Howard Co. United States	Golden Straw Ln. / Long Meadow Ct. (39.21441, -76.81085)	Traffic Calming Circle Existing	Other None	3 Approaches 0 Driveways 99.0123	Other (At-Grade) Single-Lane	2000	Yield control only on west leg. ICD estimated from Google Maps linework.
Columbia, SC Richland Co. United States	Lake Carolina Dr. / Centennial Dr. / Summit Ridge Dr. (34.16836, -80.87591)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 34.5862	Other (At-Grade) Single-Lane	2005	Very small splitter islands. ICD estimated from Google Maps linework.
Columbia, MO Boone Co. United States	Vandiver Dr. / Parker St. (38.97104, -92.31310)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 61.2841	Other (At-Grade) Single-Lane	2018	ICD estimated from Google Maps linework.
Columbia, MO Boone Co. United States	E Green Meadows Rd. / Carter Ln. (38.91638, -92.33246)	Roundabout Existing	All-Way Yield Unknown	3 Approaches 1 Driveways 32.5242	Other (At-Grade) Single-Lane	2010	Bing map has this on S Providence Rd, but that's wrong, since Providence Rd is the N-S freeway just to the west. Googlemaps says Carter Ln. ICD estimated from Google Maps linework.
Columbia, MO Boone Co. United States	E Southampton Dr. / State Farm Pkwy. (38.90095, -92.32656)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 31.6018	Other (At-Grade) Single-Lane	2008	Two approaches stubbed. ICD estimated from Google Maps linework.
Columbia, MO Boone Co. United States	Bristol Lake Dr. / Braddington Dr. (38.89246, -92.29611)	Traffic Calming Circle Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 22.3098	Other (At-Grade) Single-Lane	2006	fourth approach is now built; see Google satellite view ICD estimated from Google Maps linework.
Columbia, MO Boone Co. United States	Nocona Pkwy. / Kentsfield Ln. (38.89915, -92.28609)	Roundabout Existing	All-Way Yield Unknown	3 Approaches 0 Driveways 45.5450	Other (At-Grade) Single-Lane	2014	ICD estimated from Google Maps linework.
Columbia, MO Boone Co. United States	Ponderosa St. / Nocona Pkwy. / Kentsfield Ln. (38.90172, -92.28732)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 44.6139	Other (At-Grade) Single-Lane	2014	ICD estimated from Google Maps linework.
Columbia, MO Boone Co. United States	Ponderosa St. / Philips Farm Rd. (38.90387, -92.29025)	Roundabout Existing	All-Way Yield Unknown	3 Approaches 0 Driveways 40.8948	Other (At-Grade) Single-Lane	2014	ICD estimated from Google Maps linework.
Columbia, MO Boone Co. United States	Columbia Gorge Pkwy. / (unknown) (38.92607, -92.25845)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 29.7324	Other (At-Grade) Single-Lane	2007	ICD estimated from Google Maps linework.
Columbia, MO Boone Co. United States	Hwy WW / S Rolling Hills Rd. (38.92866, -92.25605)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 47.2440	Other (At-Grade) Multilane (2 Lane, 2x1 max)	2016
Columbia, MO Boone Co. United States	Hwy Z / E St Charles Rd. (38.97300, -92.20385)	Roundabout Existing	All-Way Yield Unknown	3 Approaches 0 Driveways 40.8550	Other (At-Grade) Single-Lane	2014	Year Completed estimated (2013-2015). ICD estimated from Google Maps linework.
Columbia, MO Boone Co. United States	Clark Ln. / Ballenger Pl. (38.96325, -92.26735)	Roundabout Existing	All-Way Yield Unknown	3 Approaches 0 Driveways 41.7892	Other (At-Grade) Single-Lane	2012	ICD estimated from Google Maps linework.
Columbia, MO Boone Co. United States	Clark Ln. / E St Charles Rd. / Lakewood Dr. (38.96322, -92.25112)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 43.6465	Other (At-Grade) Single-Lane	2013	ICD estimated from Google Maps linework.
Columbia, MO Boone Co. United States	E St Charles Rd. / Lake of the Woods Rd. / Player Pl. (38.96324, -92.24605)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 1 Driveways 26.9308	Other (At-Grade) Single-Lane	2013	Oval shaped. ICD estimated from Google Maps linework.
Columbia, MO Boone Co. United States	Rollins Rd. / (parking lot entrance) (38.94644, -92.38714)	Roundabout Existing	All-Way Yield Unknown	2 Approaches 1 Driveways 23.2217	Other (At-Grade) Single-Lane	2004	Entrance to parking lot for Bonnie View Nature Sanctuary. ICD estimated from Google Maps linework.
Columbia, MO Boone Co. United States	Rangeline Rd. / I-70 EB Ramps (38.96822, -92.32486)	Roundabout Existing	All-Way Yield Unknown	3 Approaches 0 Driveways 31.5719	Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified)	2016	ICD estimated from Google Maps linework.
Columbia, MO Boone Co. United States	Grant Ln. / Trailside Dr. / Post Oak Dr. (38.92438, -92.39510)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 16.7249	Other (At-Grade) Single-lane w/ Traversable Central Island	1995	Year Completed estimated (1994-1995). ICD estimated from Google Maps linework.
Columbia, MO Boone Co. United States	S Scott Blvd. / Vawter School Rd. / S Brushwood Lake Rd. (38.91264, -92.40001)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 34.3846	Other (At-Grade) Single-Lane	2014	ICD estimated from Google Maps linework.