Roundabouts Database

30793 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
Ranson, WV
Jefferson Co.
United States 		Flowing Springs Rd. / E 5th Ave.
(39.30291, -77.84482) 		Roundabout
Existing 		All-Way Yield
Unknown 		4 Approaches
0 Driveways
49.9058 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		2013 ICD estimated from Google Maps linework.
Deerfield, OH
Warren County
United States 		Columbia Rd. / Davis Rd. / Myrtle Ave.
(39.30098, -84.27895) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
33.5280 		Other (At-Grade)
Single-Lane 		2025 Replaced two offset intersections. https://www.choosedeerfield.com/news/columbia-road-and-davis-road-myrtle-ave-intersection-closure-for-2-weeks/
Ellicott City, MD
Howard Co.
United States 		Rogers Ave / Old Frederick Road
(39.29904, -76.81308) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
1 Driveways
26.8026 		Other (At-Grade)
Single-Lane 		2004 ICD estimated from Google Maps linework. Old Frederick Road is MD 985A but roundabout may be locally maintained and not state maintained
Essex, MD
Baltimore Co.
United States 		Southeast Blvd. (MD 702) / Hyde Park Rd.
(39.29884, -76.43951) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
40.6663 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		2006 Built as temporary installation, then converted to permanent design. ICD estimated from Google Maps linework.
Baltimore, MD
Baltimore City
United States 		Washington Pl. / Mount Vernon Pl.
(39.29756, -76.61568) 		Signalized Roundabout/Circle
Existing 		Signal
Unknown 		4 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane
Ranson, WV
Jefferson Co.
United States 		Lancaster Circle (S Fairfax Blvd. / S Mildred St. / W 4th Ave.)
(39.29523, -77.86039) 		Other
Existing 		All-Way Yield
Unknown 		6 Approaches
0 Driveways
52.6841 		Other (At-Grade)
Single-Lane 		Pedestrian access to central island. ICD estimated from Google Maps linework.
Baltimore, MD
Baltimore City
United States 		New Hope Circle
(39.29360, -76.60289) 		Other
Existing 		Unknown
Unknown 		4 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane 		Pedestrian access to central island. Parking along circulatory roadway.
Baltimore, MD
Baltimore City Co.
United States 		Old Frederick Road / Maple Wood Road
(39.29094, -76.69283) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
25.8815 		Other (At-Grade)
Single-Lane 		2013 4th leg not built yet - for future development ICD estimated from Google Maps linework.
Glenelg, MD
Howard Co.
United States 		Pfefferkorn Rd. / Fox Stream Way / Old Rover Rd.
(39.29067, -76.99226) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
28.9560 		Other (At-Grade)
Single-Lane 		2005 Year Completed estimated (2004-2005).
Deerfield Township, OH
Warren Co.
United States 		Fields Ertel Rd. / N Lebanon Rd. / Columbia Rd.
(39.28999, -84.28242) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
28.6549 		Other (At-Grade)
Single-Lane 		2017 ICD estimated from Google Maps linework.
Kansas City, MO
Clay Co.
United States 		N Shoal Creek Pkwy. / Maplewoods Pkwy.
(39.28995, -94.55702) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
51.8160 		Other (At-Grade)
Single-Lane 		2021 Merging right-turn bypass lane lane on west leg. https://www.kcmo.gov/Home/Components/FacilityDirectory/FacilityDirectory/139/360?npage=2
Kansas City, MO
Clay Co.
United States 		NW 108th St. / N Summit St.
(39.28953, -94.58976) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
40.6717 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		2013 Series of three roundabouts. ICD estimated from Google Maps linework.
Kansas City, MO
Clay Co.
United States 		NW 108th St. / US 169 NB Ramps
(39.28944, -94.58446) 		Roundabout
Existing 		All-Way Yield
Unknown 		3 Approaches
0 Driveways
41.5961 		Unknown
Multilane (2 Lane, unspecified) 		2013 Diamond interchange replaced signalized intersection. Series of three roundabouts. ICD estimated from Google Maps linework.
Kansas City, MO
Clay Co.
United States 		NW 108th St. / US 169 SB Ramps
(39.28944, -94.58625) 		Roundabout
Existing 		All-Way Yield
Unknown 		3 Approaches
0 Driveways
43.4449 		Freeway Ramps (Grade-Separated)
Multilane (2 Lane, unspecified) 		2013 Diamond interchange replaced signalized intersection. Series of three roundabouts. ICD estimated from Google Maps linework.
Kansas City, MO
Platte Co.
United States 		N Platte Purchase Dr. / NW 108th St.
(39.28944, -94.60190) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
45.7200 		Other (At-Grade)
Single-Lane 		2015 Year Completed estimated (2015-2016).
Truckee, CA
Placer Co.
United States 		Northstar Dr. / Ridgeline Dr.
(39.28647, -120.10701) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
40.6735 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		2008 Year Completed estimated (2006-2009). ICD estimated from Google Maps linework.
Point of Rocks, MD
Frederick Co.
United States 		US 15 / Point of Rocks Rd.
(39.28643, -77.53096) 		Roundabout
Existing 		All-Way Yield
Unknown 		4 Approaches
0 Driveways
47.1443 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		2008 ICD estimated from Google Maps linework.
Ellicott City, MD
Howard Co.
United States 		Lancelot Cross / Butterfruit Way / Argent Path / Stardust Ln.
(39.28522, -76.90384) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
57.9120 		Other (At-Grade)
Single-Lane 		1998 Year Completed estimated (1993-2002).
Kansas City, MO
Clay Co.
United States 		N Maplewoods Pkwy. / NE 106th St. / NE Staley Ferris Dr.
(39.28508, -94.55712) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
51.8160 		Other (At-Grade)
Single-Lane 		2021 Peanut shaped. Replaced two offset T-intersections. https://www.kcmo.gov/Home/Components/FacilityDirectory/FacilityDirectory/139/360?npage=2
Baltimore, MD
Baltimore City Co.
United States 		Wilkens Ave / Mount St / Ramsey St
(39.28325, -76.64332) 		Roundabout
Existing 		All-Way Yield
None 		5 Approaches
0 Driveways
31.4310 		Other (At-Grade)
Single-Lane 		2001 Completed prior to 2002 ICD estimated from Google Maps linework.
Baltimore, MD
Baltimore City
United States 		S President St. / Aliceanna St.
(39.28317, -76.60158) 		Other
Existing 		Unknown
Unknown 		4 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane 		No splitter islands on three legs.
Laddonia, MO
Audrain Co.
United States 		US 54 / MO 19 / CR J
(39.28073, -91.64373) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
54.8640 		Other (At-Grade)
Single-Lane 		2022 https://www.modot.org/node/27038
Ellicott City, MD
Howard Co.
United States 		Coventry Court Dr.
(39.27862, -76.87340) 		Other
Existing 		Unknown
Unknown 		2 Approaches
2 Driveways
0.0000 		Other (At-Grade)
Unknown
Smyrna, DE
Kent Co.
United States 		Newgate Circle
(39.27813, -75.61345) 		Other
Existing 		Unknown
Unknown 		4 Approaches
10 Driveways
0.0000 		Other (At-Grade)
Single-Lane
Glenwood, MD
Howard Co.
United States 		Burntwoods Rd. / Sharp Rd.
(39.27702, -77.00369) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
29.5847 		Other (At-Grade)
Single-Lane 		2006 Adjacent to Glenelg High School. ICD estimated from Google Maps linework.
Glenelg, MD
Howard Co.
United States 		Ten Oaks Rd. / Pfefferkorn Rd. / MD 32 SB Ramps
(39.27615, -76.98641) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
32.3587 		Freeway Ramps (Grade-Separated)
Single-Lane 		2008 ICD estimated from Google Maps linework.
Catonsville, MD
Baltimore Co.
United States 		Edmundson Avenue / Old Frederick Road
(39.27533, -76.76612) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
20.3400 		Other (At-Grade)
Single-Lane 		2010 ICD estimated from Google Maps linework.
Charles Town, WV
Jefferson Co.
United States 		St George St. / Citizens Way / US 340 SB Ramps
(39.27528, -77.84935) 		Roundabout
Existing 		All-Way Yield
Unknown 		4 Approaches
0 Driveways
30.5100 		Freeway Ramps (Grade-Separated)
Single-Lane 		2018 Year Completed estimated (2015-2019). ICD estimated from Google Maps linework.
Smyrna, DE
Kent Co.
United States 		Ormonde Circle
(39.27525, -75.61641) 		Other
Existing 		Unknown
Unknown 		3 Approaches
13 Driveways
0.0000 		Other (At-Grade)
Single-Lane 		No splitter islands.
Kansas City, MO
Clay Co.
United States 		N Maplewoods Pkwy. / New Mark Dr. / NE 100th St.
(39.27475, -94.55715) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
45.7200 		Other (At-Grade)
Single-Lane 		2021 https://www.kcmo.gov/Home/Components/FacilityDirectory/FacilityDirectory/139/360?npage=2
West Friendship, MD
Howard Co.
United States 		Burntwoods Rd. / Andrea Dr. / MD 32 NB Ramps
(39.27321, -76.98627) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
35.1338 		Freeway Ramps (Grade-Separated)
Single-Lane 		2008 ICD estimated from Google Maps linework.
Glenelg, MD
Howard Co.
United States 		Burntwoods Rd. (MD 932B) / Ten Oaks Rd. (MD 932C)
(39.27315, -76.98805) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
37.9074 		Other (At-Grade)
Single-Lane 		2008 ICD estimated from Google Maps linework.
Kansas City, MO
Platte Co.
United States 		NW Skyview Ave. / NW Tiffany Springs Pkwy.
(39.27313, -94.65420) 		Rotary
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
132.2141 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		ICD estimated from Google Maps linework.
Kansas City, MO
Platte Co.
United States 		N Ambassador Dr. / NW Tiffany Springs Pkwy.
(39.27269, -94.66401) 		Rotary
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
101.7038 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		Converted rotary. ICD estimated from Google Maps linework.
Larkspur, CO
Douglas Co.
United States 		Bear Dance Dr. / Sky View Ln. / Elk View Rd. / Lake Dr.
(39.27054, -104.90711) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
31.4367 		Other (At-Grade)
Single-Lane 		2003 Year Completed estimated (2002-2004). ICD estimated from Google Maps linework.
Charles Town, WV
Jefferson Co.
United States 		Haversack Circle
(39.27053, -77.84909) 		Other
Existing 		Unknown
Unknown 		3 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane
Kansas City, MO
Clay Co.
United States 		Tiffany Springs Pkwy. / NW 96th St. / US 169 NB Ramps
(39.26998, -94.58361) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
41.6077 		Freeway Ramps (Grade-Separated)
Multilane (2 Lane, unspecified) 		2013 ICD estimated from Google Maps linework.
Kansas City, MO
Clay Co.
United States 		NW 96th St. / US 169 SB Ramps
(39.26994, -94.58598) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
40.6831 		Freeway Ramps (Grade-Separated)
Multilane (2 Lane, unspecified) 		2013 ICD estimated from Google Maps linework.
Kansas City, MO
Clay Co.
United States 		NW 96th St. / N Summit St.
(39.26988, -94.58925) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
41.6078 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		2013 ICD estimated from Google Maps linework.
Meadowbrook Heights, MO
Clay Co.
United States 		Tiffany Springs Pkwy
(39.26919, -94.58184) 		Other
Existing 		Unknown
Unknown 		3 Approaches
0 Driveways
 Other (At-Grade)
Single-Lane
Baltimore, MD
Baltimore City
United States 		Whetstone Way / (parking)
(39.26820, -76.60021) 		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 		N Maplewoods Pkwy. / NE 96th St.
(39.26747, -94.55716) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
45.7200 		Other (At-Grade)
Multilane (2 Lane, 2x1 max) 		2021 East leg stubbed. https://www.kcmo.gov/Home/Components/FacilityDirectory/FacilityDirectory/139/360?npage=2
Kansas City, MO
Clay Co.
United States 		N Shoal Creek Pkwy / N Eastern Ave
(39.26697, -94.49252) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
82.2943 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		2011 ICD estimated from Google Maps linework.
Charles Town, WV
Jefferson Co.
United States 		Ball Circle
(39.26676, -77.87701) 		Other
Existing 		Unknown
Unknown 		2 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane
Kansas City, MO
Clay Co.
United States 		N Shoal Creek Pkwy / NE 96th St
(39.26609, -94.48916) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
72.1240 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		2008 ICD estimated from Google Maps linework.
Bloomington, IN
Monroe Co.
United States 		Sample Rd. / N Frontage Rd. W / I-69 SB Ramps
(39.26595, -86.52428) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
38.1000 		Freeway Ramps (Grade-Separated)
Single-Lane 		2017 Year Completed estimated (2016-2019).
Bloomington, IN
Monroe Co.
United States 		Sample Rd. / I-69 NB Ramps
(39.26581, -86.52203) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
38.1000 		Freeway Ramps (Grade-Separated)
Single-Lane 		2017 Year Completed estimated (2016-2019).
Bloomington, IN
Monroe Co.
United States 		Sample Rd. / N Wayport Rd. / N Frontage Rd. E
(39.26549, -86.51969) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
38.1000 		Other (At-Grade)
Single-Lane 		2017 Year Completed estimated (2016-2019).
Millington, MD
Kent Co.
United States 		MD 291 / US 301 SB Ramps
(39.26463, -75.86641) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
31.4393 		Freeway Ramps (Grade-Separated)
Single-Lane 		1999 Opened August 1999. ICD estimated from Google Maps linework.
Glenelg, MD
Howard Co.
United States 		Triadelphia Rd. / Ten Oaks Rd.
(39.26399, -76.98621) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
32.0040 		Other (At-Grade)
Single-Lane 		2000 Year Completed estimated (1992-2002).
Millington, MD
Kent Co.
United States 		MD 291 / US 301 NB Ramps
(39.26386, -75.86260) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
28.6656 		Freeway Ramps (Grade-Separated)
Single-Lane 		1999 Opened August 1999. ICD estimated from Google Maps linework.
Charles Town, WV
Jefferson Co.
United States 		Prospect Hill Blvd. / Butler St.
(39.26299, -77.87787) 		Other
Existing 		Unknown
Unknown 		3 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane
Coves North, MO
Platte Co.
United States 		NW Old Tiffany Springs Rd. / N Green Hills Rd.
(39.26253, -94.63089) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
44.3863 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		2015 Elliptical shape. https://www.linecreekloudmouth.com/blog/street-improvements/ ICD estimated from Google Maps linework.
Romeira, Santarém
Santarém
Portugal 		N114 / N3
(39.26012, -8.72073) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
 Other (At-Grade)
Single-Lane
Catonsville, MD
Baltimore Co.
United States 		Hidden Bludd Cir. / Jacks Ct.
(39.25966, -76.71926) 		Other
Existing 		Unknown
Unknown 		3 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane
Kansas City, MO
Platte Co.
United States 		Line Creek Pkwy. / Tiffany Springs Rd.
(39.25957, -94.61010) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
51.8160 		Other (At-Grade)
Multilane (2 Lane, 2x1 max) 		2021
Ellicott City, MD
Howard Co.
United States 		College Ave. / Bending Sky Way
(39.25754, -76.79122) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
26.8186 		Other (At-Grade)
Single-Lane 		2012 ICD estimated from Google Maps linework.
Catonsville, MD
Baltimore Co.
United States 		MD 372 / Hilltop Rd. / Entrance to UMBC
(39.25733, -76.71964) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
35.1417 		Other (At-Grade)
Single-Lane 		1998 Functional Class: Collector ICD estimated from Google Maps linework.
Kansas City, MO
Platte Co.
United States 		N Congress Ave. / MO-152 WB On-ramp / NW 96th Terr.
(39.25531, -94.66793) 		Roundabout
Existing 		All-Way Yield
Unknown 		3 Approaches
0 Driveways
55.4886 		Freeway Ramps (Grade-Separated)
Multilane (2 Lane, unspecified) 		2005 ICD estimated from Google Maps linework.
Harrison, OH
Hamilton Co.
United States 		Dry Fork Rd. / West Rd.
(39.25461, -84.76702) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
33.5280 		Other (At-Grade)
Single-Lane 		2021 Next to high school and junior high school. https://www.facebook.com/CityofHarrison/photos/a.155847067781927/4751915121508409/?type=3&source=48
Kansas City, MO
Platte Co.
United States 		N Congress Ave. / MO-152 EB Off-ramp / N Serene Ave.
(39.25328, -94.66808) 		Roundabout
Existing 		All-Way Yield
Unknown 		4 Approaches
0 Driveways
51.7908 		Freeway Ramps (Grade-Separated)
Multilane (2 Lane, unspecified) 		2005 ICD estimated from Google Maps linework.
Kansas City, MO
Platte Co.
United States 		N Serene Ave. / NW Prairie View Rd.
(39.25268, -94.66677) 		Roundabout
Existing 		All-Way Yield
Unknown 		3 Approaches
0 Driveways
29.5950 		Other (At-Grade)
Single-Lane 		2005 ICD estimated from Google Maps linework.
Monserrato, Sardinia
Cagliari
Italy 		Via Riu Mortu / Via Cesare Cabras / Viale Trieste / Via Giuseppe Zuddas
(39.25227, 9.14655) 		Other
Existing 		Other
Unknown 		5 Approaches
0 Driveways
 Other (At-Grade)
Multilane (2 Lane, 2x2 max) 		Mix of stop and yield control on entry.
Catonsville, MD
Baltimore Co.
United States 		Hilltop Cir. / UMBC Blvd.
(39.25178, -76.71442) 		Rotary
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
60.1156 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		2015 Lane changes needed for some through movements. ICD estimated from Google Maps linework.
Blue Ash, OH
Hamilton Co.
United States 		Glendale Milford Rd. / Lake Forest Dr. / Summit Pl.
(39.25169, -84.38466) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
50.8671 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		2019 ICD estimated from Google Maps linework.
Evendale, OH
Hamilton Co.
United States 		Aviation Way / (parking)
(39.25152, -84.44081) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
57.9120 		Other (At-Grade)
Multilane (2 Lane, 2x1 max) 		2018
Incline Village, NV
Washoe Co.
United States 		SR 28 (Tahoe Blvd.) / SR 431 (Mt Rose Hwy.)
(39.25146, -119.97321) 		Roundabout
Existing 		All-Way Yield
Unknown 		3 Approaches
0 Driveways
39.7690 		Other (At-Grade)
Single-Lane 		2012 Reduced from two entering lanes (LT only, TH only) on west leg to one lane in 2015-2016. Now single-lane roundabout. ICD estimated from Google Maps linework.
Selargius, Sardinia
Cagliari
Italy 		Via Giuseppe Peretti / Via Araolla / Piazzale Alessandro Ricchi
(39.25098, 9.10911) 		Roundabout
Existing 		All-Way Yield
Unknown 		4 Approaches
0 Driveways
 Other (At-Grade)
Multilane (2 Lane, 2x2 max)
Ellicott City, MD
Howard Co.
United States 		Hillsborough Rd. / English Morning Ln.
(39.25046, -76.79507) 		Other
Existing 		Unknown
Unknown 		3 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane 		No splitter islands.
Ellicott City, MD
Howard Co.
United States 		Academy Rd. / Hillsborough Rd. / Chews Vineyard
(39.24993, -76.78913) 		Other
Existing 		Unknown
Unknown 		4 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane 		No splitter islands.
West Friendship, MD
Howard Co.
United States 		Folly Quarter Rd. / Sheppard Ln. / Homewood Rd.
(39.24979, -76.93188) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
33.5280 		Other (At-Grade)
Single-Lane 		2004 Year Completed estimated (2002-2005).
Evendale, OH
Hamilton Co.
United States 		Aviation Way / Evendale Dr.
(39.24957, -84.44120) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
51.8160 		Other (At-Grade)
Multilane (2 Lane, 2x1 max) 		2020 Double left turn on west leg.
Cagliari, Sardinia
Cagliari
Italy 		Via Giuseppe Peretti / Via Stamira / SS131dir (Circonvallazione Quadrifoglio) Ramps
(39.24951, 9.11493) 		Roundabout
Existing 		All-Way Yield
Unknown 		4 Approaches
0 Driveways
 Freeway Ramps (Grade-Separated)
Multilane (2 Lane, unspecified)
Ellicott City, MD
Howard Co.
United States 		Columbia Rd. / Hemlock Cone Way / Kingscup Ct.
(39.24949, -76.83326) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
21.3360 		Other (At-Grade)
Single-lane w/ Traversable Central Island 		2019
Catonsville, MD
Baltimore Co.
United States 		UMBC Blvd. / Research Park Dr.
(39.24874, -76.71580) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
44.3950 		Other (At-Grade)
Single-Lane 		2015 Elliptical shape. ICD estimated from Google Maps linework.
Catonsville, MD
Baltimore Co.
United States 		Research Park Dr.
(39.24868, -76.71406) 		Other
Existing 		Uncontrolled
Unknown 		2 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane
Montgomery, OH
Hamilton Co.
United States 		Pfeiffer Rd. / Deerfield Rd.
(39.24866, -84.35092) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane 		2023 https://www.facebook.com/story.php/?story_fbid=602452425250045&id=100064558789263
Kansas City, MO
Clay Co.
United States 		N Sycamore Ave. / N 85th Terr. / Shoal Creek Valley Dr.
(39.24733, -94.48586) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
60.9600 		Other (At-Grade)
Single-Lane 		2002 No truck apron. Year Completed estimated (1997-2003).
Quartucciu, Sardinia
Cagliari
Italy 		Via delle Serre / Via Segre
(39.24684, 9.16501) 		Roundabout
Existing 		All-Way Yield
Unknown 		3 Approaches
0 Driveways
 Other (At-Grade)
Multilane (2 Lane, 2x1 max)
Kansas City, MO
Clay Co.
United States 		NE Shoal Creek Valley Dr. / (unknown)
(39.24673, -94.47459) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
36.5760 		Other (At-Grade)
Single-Lane 		2020
Evendale, OH
Hamilton Co.
United States 		Neumann Way / Evendale Dr.
(39.24668, -84.44092) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
39.6240 		Other (At-Grade)
Single-Lane 		2020 Year Completed estimated (2019-2020).
Liberty, MO
Clay Co.
United States 		N Stewart Rd. / College St. / Conistor Ln. / (parking)
(39.24629, -94.45100) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
36.5760 		Other (At-Grade)
Single-Lane 		2002 Year Completed estimated (1997-2003).
Liberty, MO
Clay Co.
United States 		College St. / N Blue Jay Dr.
(39.24628, -94.44898) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
36.5760 		Other (At-Grade)
Single-Lane 		2005
Kansas City, MO
Clay Co.
United States 		N Booth Ave. / NE Shoal Creek Valley Dr. / Commercial Dr.
(39.24626, -94.47674) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
44.1960 		Other (At-Grade)
Multilane (2 Lane, 2x1 max) 		2020 Yield-controlled right-turn bypass lane on west leg. Year Completed estimated (2020-20210.
Ellicott City, MD
Howard Co.
United States 		Nightingale Ct. / Academy Rd.
(39.24564, -76.79297) 		Other
Existing 		Unknown
Unknown 		2 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Unknown
West Friendship, MD
Howard Co.
United States 		Castlebridge Rd. / Hunter's View Rd.
(39.24552, -76.90189) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
42.6720 		Other (At-Grade)
Single-Lane 		2006
Dundalk, MD
Baltimore Co.
United States 		Dundalk Ave. / Sollers Point Rd.
(39.24534, -76.50786) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
24.9734 		Other (At-Grade)
Single-Lane 		2007 ICD estimated from Google Maps linework.
Columbus, IN
Bartholomew Co.
United States 		W Lowell Rd. / CR 200 W
(39.24456, -85.95057) 		Roundabout
Existing 		All-Way Yield
Unknown 		4 Approaches
0 Driveways
36.5760 		Other (At-Grade)
Single-Lane 		2024 https://www.therepublic.com/2025/11/28/city-marks-official-completion-of-lowell-road-project/
Liberty, MO
Clay Co.
United States 		S Stewart Rd. / (parking)
(39.24344, -94.45337) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
33.5277 		Other (At-Grade)
Single-Lane 		2016 Add-lane right-turn bypass lane on south leg.
Blue Ash, OH
Hamilton Co.
United States 		Plainfield Rd. / Parkview Dr.
(39.24335, -84.39561) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
18.4993 		Other (At-Grade)
Single-Lane 		2018 http://www.blueash.com/departments/public_works/roundabout_safety.php ICD estimated from Google Maps linework.
Kansas City, MO
Clay Co.
United States 		NE 82nd Terr. / N Booth Ave.
(39.24250, -94.47752) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
53.3400 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		2008 South leg stubbed.
Cagliari, Sardinia
Cagliari
Italy 		Via Edward Jenner / (connector to SS131dir)
(39.24238, 9.11694) 		Other
Existing 		All-Way Stop
Unknown 		3 Approaches
0 Driveways
 Other (At-Grade)
Multilane (2 Lane, unspecified)
Clarksburg, MD
Montgomery Co.
United States 		Granite Rock Rd. / Grand Elm St.
(39.24126, -77.26647) 		Other
Existing 		Unknown
Unknown 		4 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane 		No splitter islands.
Columbus, IN
Bartholomew Co.
United States 		Rosemont Dr. / CR 200 W
(39.23964, -85.95025) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
30.4800 		Other (At-Grade)
Single-Lane 		2022 Year Completed estimated (2019-2022).
Blue Ash, OH
Hamilton Co.
United States 		Malsbary Rd. / Alliance Rd.
(39.23916, -84.38188) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
34.2258 		Other (At-Grade)
Single-Lane 		2017 http://www.blueash.com/departments/public_works/roundabout_safety.php ICD estimated from Google Maps linework.
Kings Beach, CA
Placer Co.
United States 		N Lake Blvd. / Bear Ave. / Brook Ave. / (beach parking)
(39.23681, -120.02465) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
24.0514 		Other (At-Grade)
Single-Lane 		2014 ICD estimated from Google Maps linework.
Clarksburg, MD
Montgomery Co.
United States 		Saint Clair Rd. / Timber Creek Ln. / Brewers Tavern Terrace / (unknown)
(39.23680, -77.27531) 		Other
Existing 		Unknown
Unknown 		5 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane 		No splitter islands.
Kings Beach, CA
Placer Co.
United States 		N Lake Blvd. / Coon St.
(39.23589, -120.02207) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
29.6021 		Other (At-Grade)
Single-Lane 		2014 ICD estimated from Google Maps linework.
Grass Valley, CA
Nevada Co.
United States 		Sierra College Dr. / Litton Dr. / Robert Ross Way
(39.23445, -121.05200) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
32.3780 		Other (At-Grade)
Single-Lane 		2003 ICD estimated from Google Maps linework.
Columbus, IN
Bartholomew Co.
United States 		Taylor Rd. / Fairlawn Dr.
(39.23427, -85.87603) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
18.2880 		Other (At-Grade)
Single-lane w/ Traversable Central Island 		2021