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
Glen Burnie, MD Anne Arundel Co. United States	Hancock Ln. / Mayflower Cir. (39.14357, -76.62097)	Other Existing	Unknown Unknown	3 Approaches 0 Driveways 0.0000	Other (At-Grade) Unknown
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.
Scaggsville, MD Howard Co. 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, unspecified)	2001	Series of 4 roundabouts. ICD estimated from Google Maps linework.
Scaggsville, MD Howard Co. 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, unspecified)	2001	Series of 4 roundabouts. ICD estimated from Google Maps linework.
Severn, MD Anne Arundel Co. United States	Milestone Pkwy. / Clubhouse Dr. (39.14600, -76.74775)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 45.7200	Other (At-Grade) Multilane (2 Lane, unspecified)	2012	Year Completed estimated (2011-2014).
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.
Carbonia, Sardinia Province of South Sardinia Italy	SS126 / Via Michelangelo (39.14701, 8.51163)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways	Other (At-Grade) Multilane (2 Lane, 2x1 max)
Scaggsville, MD Howard Co. United States	MD 216 / Maple Lawn Blvd. (39.14710, -76.90723)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 40.7543	Other (At-Grade) Multilane (2 Lane, unspecified)	2005	Series of 4 roundabouts. Functional Class: Arterial ICD estimated from Google Maps linework.
Glen Burnie, MD Anne Arundel Co. United States	George Clausse Blvd. / (parking access) (39.14768, -76.64935)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 33.3442	Other (At-Grade) Single-Lane	2008	RT lanes on eastbound and northbound approaches. Part of shopping center. ICD estimated from Google Maps linework.
Fulton, MD Howard Co. United States	S Maple Lawn Blvd. / Eugene Ave. / Charles Way (39.14787, -76.91560)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 33.5280	Other (At-Grade) Single-Lane	2017
Scaggsville, MD Howard Co. United States	MD 216 / Westside Blvd. (39.14796, -76.90977)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 41.6801	Other (At-Grade) Multilane (2 Lane, unspecified)	2009	Series of 4 roundabouts. Functional Class: Arterial ICD estimated from Google Maps linework.
Olney, MD Montgomery Co. United States	Old Baltimore Rd. / Bishops Castle Dr. (39.14878, -77.04958)	Traffic Calming Circle Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 0.0000	Unknown Single-Lane	2019	Painted splitter islands on major street; no splitter islands on side street.
Dover, DE Kent Co. United States	Cannon Mill Dr. / E Sheldrake Cir. / W Sheldrake Cir. (39.14882, -75.56602)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 28.9560	Other (At-Grade) Single-Lane	2006	No pavement markings. Year Completed estimated (2005-2006).
Gaithersburg, MD Montgomery Co. United States	Perry Pkwy. / (parking) (39.14899, -77.21048)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 47.2440	Other (At-Grade) Multilane (2 Lane, 2x1 max)	2004	Year Completed estimated (2002-2005).
Scaggsville, MD Howard Co. United States	Westside Blvd. / (parking lot) (39.14952, -76.90856)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 31.4909	Other (At-Grade) Single-Lane	2008	ICD estimated from Google Maps linework.
Darnestown, MD Montgomery Co. United States	Schaeffer Rd. / Germantown Park Dr. / Central Park Cir. (39.15003, -77.30152)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 48.7680	Other (At-Grade) Single-Lane	2004	Right-turn-only lane on northeast leg. Year Completed estimated (2002-2005).
Bloomington, IN Monroe Co. United States	Moores Pike / Winfield Rd. (39.15027, -86.50103)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 33.3430	Other (At-Grade) Single-Lane	2005	Completed August 2005. http://bloomington.in.gov/egov/docs/1124562196872.htm ICD estimated from Google Maps linework.
Severn, MD Anne Arundel Co. United States	Milestone Pkwy. / Split Creek Ln. / (parking) (39.15042, -76.74668)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 45.7200	Other (At-Grade) Multilane (2 Lane, unspecified)	2007
Dover, DE Kent Co. United States	Towne Centre Dr. / Lloyd St. / Wemyss Rd. (39.15134, -75.53817)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 31.4901	Other (At-Grade) Single-Lane	2008	Year Completed estimated (2007-2009). Splitter islands added 2014-2015. ICD estimated from Google Maps linework.
Hanover, MD Anne Arundel Co. United States	Watts Ave. / Clark Rd. (39.15138, -76.72638)	Roundabout Existing	All-Way Yield None	2 Approaches 0 Driveways 25.9330	Other (At-Grade) Single-Lane	2008	ICD estimated from Google Maps linework.
Union Township, OH Clermont Co. United States	Miami View Trl. / Miami Hills Dr. / Terrace Ridge Dr. (39.15189, -84.28027)	Other Existing	All-Way Yield None	4 Approaches 0 Driveways 60.2012	Other (At-Grade) Single-Lane		No splitter islands. ICD estimated from Google Maps linework.
North Avondale, OH Hamilton Co. United States	Dana Ave. / Clinton Springs Ave. (39.15192, -84.48330)	Roundabout Existing	All-Way Yield Unknown	3 Approaches 1 Driveways 25.9328	Other (At-Grade) Single-Lane	2015	This roundabout is mentioned in this local newspaper article (https://www.cincinnati.com/story/news/politics/2017/09/12/northside-you-ready-roundabout/646761001/) 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.
Kansas City, KS Wyandotte Co. United States	Whispering Ln. / Sortop Dr. (39.15320, -94.83506)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 33.5280	Other (At-Grade) Single-Lane	2005	Elliptical shape. ICD = 120 ft x 100 ft.
Gaithersburg, MD Montgomery Co. United States	Parkview Ave. / Uptown St. (39.15334, -77.22619)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 36.5760	Other (At-Grade) Single-Lane	2012	Right-turn-only lane on northwest leg. Year Completed estimated (2011-2012).
Carson City, NV Carson City United States	S Carson St. / S Stewart St. (39.15348, -119.76692)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 47.2440	Other (At-Grade) Multilane (2 Lane, unspecified)	2020	https://aroundcarson.com/2020/10/10/carson_street_construction-2/
Fruita, CO Mesa Co. United States	CO-340 / Raptor Rd. (39.15351, -108.73813)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 47.2337	Other (At-Grade) Multilane (2 Lane, unspecified)	2009	ICD estimated from Google Maps linework.
Scaggsville, MD Howard Co. United States	Maple Lawn Blvd. / Tawes St. (39.15364, -76.90125)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 34.2675	Other (At-Grade) Multilane (2 Lane, unspecified)	2006	ICD estimated from Google Maps linework.
Dover, DE Kent Co. United States	Allen Ct. / Garrett House Cir. (39.15377, -75.53746)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 34.2674	Other (At-Grade) Single-Lane	2014	Year Completed estimated (2011-2014). ICD estimated from Google Maps linework.
Fruita, CO Mesa Co. United States	CO-340 / I-70 EB Ramps / I-70 Frontage Rd. (39.15470, -108.73769)	Roundabout Existing	All-Way Yield Active Pedestrian Warning (flashing yellow)	4 Approaches 0 Driveways 40.7499	Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified)	2009	ICD estimated from Google Maps linework.
Germantown, MD Montgomery Co. United States	Wonderland Way / Chalet Dr. (39.15516, -77.27464)	Other Existing	Unknown Unknown	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane		No splitter islands.
Dover, DE Kent Co. United States	Mifflin Rd. / Woodmill Dr. (39.15527, -75.55831)	Traffic Calming Circle Existing	All-Way Yield None	3 Approaches 0 Driveways	Other (At-Grade) Single-Lane	2005	Painted splitter islands.
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.
Hanover, MD Anne Arundel Co. United States	Arundel Mills Blvd. / MD 295 NB Ramps (39.15573, -76.74459)	Roundabout Removed	All-Way Yield None	3 Approaches 0 Driveways 26.8575	Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified)	2002	ICD estimated from Google Maps linework. Replaced with DDI
Hanover, MD Anne Arundel Co. United States	Arundel Mills Blvd. / MD 295 SB Ramps (39.15677, -76.74617)	Roundabout Removed	All-Way Yield None	2 Approaches 0 Driveways 66.6796	Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified)	2002	ICD estimated from Google Maps linework. Replaced with DDI.
Olney, MD Montgomery Co. United States	Wickham Rd. / Broom Dr. (39.15708, -77.09362)	Other Existing	Unknown Unknown	3 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane		No splitter islands.
Riverside, MO Platte Co. United States	Horizons Pkwy. / Argosy Casino Pkwy. (39.15795, -94.64060)	Roundabout Existing	All-Way Yield Unknown	3 Approaches 0 Driveways 50.0090	Other (At-Grade) Multilane (2 Lane, unspecified)	2009	ICD estimated from Google Maps linework.
Scaggsville, MD Howard Co. United States	Maple Lawn Blvd. / Iager Blvd. (39.15816, -76.90440)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 33.3392	Other (At-Grade) Multilane (2 Lane, unspecified)	2005	ICD estimated from Google Maps linework.
Milford, OH Clermont Co. United States	Chamber Dr. / Beechwood Rd. (39.15816, -84.27320)	Roundabout Existing	All-Way Yield None	3 Approaches 1 Driveways 16.6696	Other (At-Grade) Single-lane w/ Traversable Central Island	2016	Painted splitter islands. ICD estimated from Google Maps linework.
Scaggsville, MD Howard Co. United States	Hopkins-Gorman Rd. / US 29 NB Ramps (39.15846, -76.88660)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 59.2695	Other (At-Grade) Multilane (2 Lane, unspecified)	2002	ICD estimated from Google Maps linework.
Germantown, MD Montgomery Co. United States	Ashleigh Greene Rd. / Cornflower Rd. (39.15879, -77.30324)	Other Existing	Unknown Unknown	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane		No splitter islands.
Fruita, CO Mesa Co. United States	Aspen Ave. / Mesa St. (Park Square) (39.15884, -108.73360)	Other Existing	Unknown Unknown	0 Approaches 0 Driveways 77.7908	Other (At-Grade) Unknown		Completed 1940? ICD estimated from Google Maps linework.
Jessup, MD Anne Arundel Co. United States	Montevideo Rd. / Forest Ave. / Wigley Ave. (39.15966, -76.75916)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 33.5280	Other (At-Grade) Single-Lane	2007	Year Completed estimated (2006-2007).
Germantown, MD Montgomery Co. United States	Ashleigh Greene Rd. / Ashmeade Rd. (39.16013, -77.29900)	Other Existing	Unknown Unknown	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane		No splitter islands.
Olney, MD Montgomery Co. United States	Brightwood Rd. / Winding Oak Dr. / Weston Pl. (39.16065, -77.09120)	Other Existing	Unknown Unknown	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane		No splitter islands.
Olney, MD Montgomery Co. United States	Wickham Rd. / Olney Mill Rd. / Dunsford Dr. (39.16071, -77.09596)	Other Existing	Unknown Unknown	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane		No splitter islands on three legs.
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
Boyds, MD Montgomery Co. United States	Crazy Quilt Ct. (39.16123, -77.30454)	Other Existing	Unknown Unknown	3 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane
Germantown, MD Montgomery Co. United States	Crestmount Rd. / Kings Crossing Rd. (39.16175, -77.30841)	Other Existing	Unknown Unknown	3 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane		No splitter islands.
Berryville, VA Clarke Co. United States	SR 636 (Westwood Rd) / SR 7 Business (W Main St) (39.16190, -77.99695)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 31.4854	Other (At-Grade) Single-Lane	2013	ICD estimated from Google Maps linework.
Germantown, MD Montgomery Co. United States	Kings Crossing Blvd. / Cornflower Rd. (39.16222, -77.30397)	Other Existing	Unknown Unknown	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane		No splitter islands.
Germantown, MD Montgomery Co. United States	Kings Crossing Blvd. / Ashmeade Rd. (39.16235, -77.29971)	Other Existing	All-Way Yield Unknown	3 Approaches 0 Driveways 32.0040	Other (At-Grade) Single-Lane		Painted splitter islands. Pedestrian crossings next to circulatory roadway.
Riverside, MO Platte Co. United States	Argosy Casino Pkwy. / US 69 NB Ramps / NW Tremont Trafficway (39.16237, -94.62502)	Roundabout Existing	All-Way Yield Unknown	5 Approaches 0 Driveways 40.7455	Freeway Ramps (Grade-Separated) Single-Lane	2016	ICD estimated from Google Maps linework.
Dover, DE Kent Co. United States	Independence Blvd. / Colony Dr. / Green Blade Dr. (39.16260, -75.55291)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 22.2247	Other (At-Grade) Single-lane w/ Traversable Central Island	2017	https://delawarestatenews.net/news/roundabout-realignment-way-dovers-independence-boulevard/ ICD estimated from Google Maps linework.
Tahoe City, CA Placer Co. United States	SR 89 / W Lake Blvd. (39.16291, -120.14444)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 37.9671	Other (At-Grade) Single-Lane	2019	https://flh.fhwa.dot.gov/projects/ca/truckee/ ICD estimated from Google Maps linework.
Laddonia, MO Audrain Co. United States	US 54 / MO 19 / Hwy BB (39.16323, -91.64907)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 54.8640	Other (At-Grade) Single-Lane	2019	https://www.modot.org/roundabouts-us-route-54
Upper Lake, CA Lake Co. United States	SR 20 / SR 29 (39.16333, -122.92095)	Roundabout Existing	All-Way Yield Unknown	3 Approaches 0 Driveways 36.1148	Other (At-Grade) Single-Lane	2015	ICD estimated from Google Maps linework.
Tahoe City, CA Placer Co. United States	SR 89 / W River Rd. (39.16425, -120.14919)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 34.2623	Other (At-Grade) Single-Lane	2019	https://flh.fhwa.dot.gov/projects/ca/truckee/ ICD estimated from Google Maps linework.
Germantown, MD Montgomery Co. United States	Summer Oak Dr. / Summer Oak Ct. (39.16467, -77.24384)	Other Existing	Unknown Unknown	3 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane		No splitter islands on two legs.
Kansas City, MO Clay Co. United States	NW Briarcliff Pkwy. / MO-9 SB Ramps / NW Tullison Rd. / NW 38th St. (39.16472, -94.59926)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 85.3440	Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified)	2012
Kansas City, MO Clay Co. United States	NW Briarcliff Pkwy. / MO-9 NB Ramps / NW Platte Rd. (39.16606, -94.59842)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 79.2480	Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified)	2012	Right-turn bypass lanes on north and east quadrants.
Germantown, MD Montgomery Co. United States	Crossview Rd. / Autumn Crest Rd. (39.16717, -77.30075)	Other Existing	Unknown Unknown	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane		No splitter islands.
Kansas City, MO Clay Co. United States	Parvin Rd. / Prather Rd. (MO Hwy 1) (39.16738, -94.55294)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 41.1480	Other (At-Grade) Single-Lane	2020	https://www.facebook.com/MoDOT.KansasCity/posts/project-update-the-parvin-rd-and-prather-rd-roundabout-project-in-clay-county-is/10158316265513515/
Yuba City, CA Sutter Co. United States	Stabler Ln. / Butte Vista Ln. (39.16747, -121.64400)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 46.2983	Other (At-Grade) Single-Lane	2006	ICD estimated from Google Maps linework.
Cleves, OH Hamilton Co. United States	Cooper Ave. / (high school parking) (39.16904, -84.75329)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 30.4800	Other (At-Grade) Single-Lane	2016	Painted splitter island on south leg.
Yuba City, CA Sutter Co. United States	Butte Vista Ln. / Tres Picos Ln. (39.16908, -121.64820)	Traffic Calming Circle Existing	All-Way Yield None	4 Approaches 0 Driveways 26.8524	Other (At-Grade) Single-Lane	2004	ICD estimated from Google Maps linework.
Pasadena, MD Anne Arundel Co. United States	Creekside Village Blvd. / Oak Creek Dr. (39.16938, -76.57165)	Other Existing	All-Way Yield Unknown	3 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane		No splitter island on southeast leg.
Kansas City, KS Wyandotte Co. United States	N 131st Dr. / Meadow Ln. (39.17638, -94.88099)	Roundabout Existing	All-Way Yield None	3 Approaches 1 Driveways 36.5760	Other (At-Grade) Single-Lane	2003
Gaithersburg, MD Montgomery Co. United States	Hoover Farm Dr. / Brass Bucket Ct. (39.17775, -77.13018)	Other Existing	Unknown Unknown	3 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane		No splitter islands.
Germantown, MD Montgomery Co. United States	Kildale Hills Terrace / Galway Bay Cir. (39.17826, -77.27643)	Other Existing	Unknown Unknown	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Unknown
Bloomington, IN Monroe Co. United States	N Monroe St. / W 17th St. / W Arlington Rd. (39.17914, -86.54712)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 1 Driveways 37.0325	Other (At-Grade) Single-Lane	2014	ICD estimated from Google Maps linework.
Winchester, VA Winchester City United States	Mahone Dr. / Rhodes Cir. / Gordon Pl. / McGruder Ct. (39.18038, -78.19089)	Other Existing	Unknown Unknown	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Unknown
Gaithersburg, MD Montgomery Co. United States	Hoover Farm Dr. / Holland Meadow Ln. (39.18129, -77.13125)	Other Existing	Unknown Unknown	3 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane		No splitter islands.
Carson City, NV Carson City Co. United States	Northridge Dr. / Spooner Dr. (39.18150, -119.74896)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 99.9997	Other (At-Grade) Single-Lane	1997	Painted splitter islands on Northridge approaches. Year Completed estimated (1994-1999).
Winchester, VA Winchester City United States	Mahone Dr. / Ramseur Ln. (39.18178, -78.18846)	Other Existing	Unknown Unknown	3 Approaches 0 Driveways 0.0000	Other (At-Grade) Unknown
Carson City, NV Carson City Co. United States	Northridge Dr. / Carriage Crest Dr. (39.18290, -119.75077)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 24.3840	Other (At-Grade) Single-Lane	1997	Year Completed estimated (1994-1999).
Germantown, MD Montgomery Co. United States	Observation Dr. / Goldenrod Ln. (39.18419, -77.24566)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 45.7200	Other (At-Grade) Multilane (2 Lane, 2x2 max)	2013	Year Completed estimated (2012-2014).
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).
Germantown, MD Montgomery Co. United States	Club Hill Dr. / Thackery Pl. (39.18531, -77.27012)	Other Existing	Unknown Unknown	3 Approaches 0 Driveways 0.0000	Other (At-Grade) Unknown
Winchester, VA Winchester City Co. United States	E Piccadilly St. / N East Ln. / National Ave. (39.18564, -78.16067)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 25.9204	Other (At-Grade) Single-Lane	2015	https://www.facebook.com/winchestervagov/posts/roundabout-at-national-avenuepiccadilly-street-intersection-is-really-beginning-/10153626945621055/. ICD estimated from Google Maps linework.
Manhattan, KS Riley Co. United States	4th St. / Bluemont Ave. (39.18669, -96.56160)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 41.6571	Other (At-Grade) Single-Lane	2010	Previously controlled by two-way stop ICD estimated from Google Maps linework.
Germantown, MD Montgomery Co. United States	Pickering Dr. / Pickering Pl. (39.18854, -77.27173)	Other Existing	Unknown Unknown	3 Approaches 0 Driveways 0.0000	Other (At-Grade) Unknown
Riverside, MO Platte Co. United States	N Woodward Rd. / NW 52nd St. (39.18892, -94.63177)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 37.9531	Other (At-Grade) Single-Lane	2012	ICD estimated from Google Maps linework.
Long Reach, MD Howard Co. United States	Shining Oceans Way / Dried Earth Blvd. (39.18977, -76.80673)	Other Existing	Unknown Unknown	3 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane		No splitter islands.
Bloomington, IN Monroe Co. United States	W Woodyard Rd. / N Curry Pike / W Hunter Valley Rd. (39.19027, -86.58242)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 56.3877	Other (At-Grade) Multilane (2 Lane, 2x1 max)	2022	Series of 2 roundabouts. Striped out spiral in circulatory roadway. https://www.heraldtimesonline.com/story/news/traffic/2022/03/03/work-2-6-m-double-roundabout-bloomington-start-next-week/9332294002/
Germantown, MD Montgomery Co. United States	Germantown Rd. / Watkins Mill Rd. / Blunt Rd. (39.19058, -77.22492)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 36.5760	Other (At-Grade) Single-Lane	1999	Right-turn bypass lane on north leg. Year Completed estimated (1993-2005).
Bloomington, IN Monroe Co. United States	W Woodyard Rd. / N Smith Pike (39.19089, -86.58340)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 36.5760	Other (At-Grade) Single-Lane	2022	Series of 2 roundabouts.
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.
Manhattan, KS Riley Co. United States	Anderson Ave. / Kimball Ave. / Scenic Dr. (39.19169, -96.64167)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 62.0184	Other (At-Grade) Multilane (2 Lane, unspecified)	2018	ICD estimated from Google Maps linework.
Hanover, MD Anne Arundel Co. United States	Ridge Rd. / Corporate Center Dr. (39.19204, -76.70216)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 31.4719	Other (At-Grade) Single-Lane	2004	ICD estimated from Google Maps linework.
Winchester, VA Frederick Co. United States	Conference Center Dr. / (unknown) (39.19363, -78.20051)	Unknown Existing	Unknown Unknown	3 Approaches 0 Driveways 0.0000	Other (At-Grade) Unknown
Kansas City, MO Clay Co. United States	N Mercier St. / N Summit St. (39.19389, -94.59236)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 53.3400	Other (At-Grade) Single-Lane	2016	Year Completed estimated (2016-2017).
Cagliari, Sardinia Cagliari Italy	Viale Poetto / Via Lungo Saline / Via Marina Piccola (39.19421, 9.15682)	Other Existing	Other Unknown	4 Approaches 0 Driveways	Other (At-Grade) Multilane (3+ Lane)		Mix of stop and yield control on entry.
Aspen, CO Pitkin Co. United States	SR 82 / Maroon Creek Rd. / Castle Creek Rd. (39.19557, -106.84025)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 60.9600	Other (At-Grade) Multilane (2 Lane, unspecified)	2000
Kansas City, MO Platte Co. United States	NW Waukomis Dr. / NW Englewood Rd. (39.19588, -94.60730)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 35.0520	Other (At-Grade) Single-Lane	2020
Kansas City, MO Platte Co. United States	NW 56th St. / N Northwood Rd. (39.19598, -94.63168)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 38.1000	Other (At-Grade) Single-Lane	2019
Hillsboro, VA Loudoun Co. United States	Charles Town Pike (Rte 9) / Hillsboro Rd. / (school access) (39.19806, -77.72000)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane	2021	https://www.washingtonpost.com/transportation/2021/07/23/virginia-hillsboro-walkable-roads-loudoun/
Carson City, NV Carson City Co. United States	Arrowhead Dr. / I-580 SB Ramp (39.19810, -119.77540)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 27.7669	Freeway Ramps (Grade-Separated) Single-Lane	2002	Future SB on-ramp for Carson City Freeway (I-580). Overpass and roundabouts completed in 2002; freeway ramps completed ~2005. ICD estimated from Google Maps linework.
Carson City, NV Carson City Co. United States	Arrowhead Dr. / I-580 NB Ramps / Imus Rd. (39.19840, -119.77380)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 28.6923	Freeway Ramps (Grade-Separated) Single-Lane	2002	NB off-ramp for Carson City Freeway (I-580) and extension of Imus Road. Overpass and roundabouts completed in 2002. ICD estimated from Google Maps linework.
Cagliari, Sardinia Cagliari Italy	Viale Salvatore Ferrara / Via Ramontana / Via Borgo Sant'Elia / Viale San Bartolomeo (39.19857, 9.14366)	Other Existing	All-Way Stop Unknown	4 Approaches 0 Driveways	Other (At-Grade) Multilane (2 Lane, 2x1 max)