Roundabouts Database Index

29616 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
Terre Haute, IN Vigo Co. United States	S Sycamore Terrace St. / New Margaret Dr. (39.43997, -87.34235)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 47.0408	Other (At-Grade) Multilane (2 Lane, unspecified)	2011	ICD estimated from Google Maps linework.
(unincorporated), CO Douglas Co. United States	Happy Canyon Rd. / Castle Pines Dr. S (39.43975, -104.88723)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 34.1278	Other (At-Grade) Single-Lane	2011	ICD estimated from Google Maps linework.
Frederick, MD Frederick Co. United States	Synergy Way (39.43898, -77.36665)	Roundabout Existing	All-Way Yield None	2 Approaches 0 Driveways 36.5760	Other (At-Grade) Single-Lane	2010	Year Completed estimated (2009-2011).
Virginia Footills, NV Washoe Co. United States	Buchephalus Pkwy. / Copenhagen Way / Bonfire Ln. (39.43838, -119.71442)	Other Existing	Unknown Unknown	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Unknown
Terre Haute, IN Vigo Co. United States	2440 Huber Ln (39.43817, -87.38012)	Traffic Calming Circle Existing	Unknown None	2 Approaches 4 Driveways 23.0598	Other (At-Grade) Single-Lane		ICD estimated from Google Maps linework.
Terre Haute, IN Vigo Co. United States	2328 Huber Ln (39.43817, -87.38160)	Traffic Calming Circle Existing	Unknown None	2 Approaches 2 Driveways 23.0598	Other (At-Grade) Single-Lane		ICD estimated from Google Maps linework.
Terre Haute, IN Vigo Co. United States	2216 Huber Ln (39.43806, -87.38327)	Traffic Calming Circle Existing	Unknown None	1 Approaches 2 Driveways 23.0599	Other (At-Grade) Single-Lane		ICD estimated from Google Maps linework.
Frederick, MD Frederick Co. United States	Synergy Way / Progress Dr. (39.43796, -77.36660)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 35.0520	Other (At-Grade) Single-Lane	2008
Virginia Footills, NV Washoe Co. United States	Bucephalus Pkwy. / Show Jumper Ln. (39.43790, -119.71097)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 39.6240	Other (At-Grade) Single-Lane	2015	Painted splitter islands on north and south legs. Year Completed estimated (2014-2015).
(unincorporated), CO Douglas Co. United States	Fox Sparrow Rd. / Windhaven Dr. (39.43781, -104.73199)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 26.7495	Other (At-Grade) Single-Lane	1998	Year Completed estimated (1993-1999). ICD estimated from Google Maps linework.
Virginia Footills, NV Washoe Co. United States	Bucephalus Pkwy. / Burmese Ln. / Show Jumper Ln. (39.43756, -119.70732)	Other Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane		No splitter islands on north and south legs.
Townsend, DE New Castle Co. United States	Tony Marchio Dr. / Campus Dr. / Stadium Way (39.43676, -75.64873)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 53.3400	Other (At-Grade) Multilane (2 Lane, unspecified)	2014	Concentric striping on circulatory roadway. Right-turn-only arrows in all lanes of three entries. Year Completed estimated (2011-2015).
Reno, NV Washoe Co. United States	Burghley Ln. / Kerrydale Ct. (39.43443, -119.71424)	Other Existing	Unknown Unknown	2 Approaches 5 Driveways 0.0000	Other (At-Grade) Unknown
Dulaney Forest, MD Baltimore Co. United States	E Ridgely Rd. / Margate Rd. (39.43199, -76.60754)	Traffic Calming Circle Existing	All-Way Yield None	4 Approaches 0 Driveways 19.8120	Other (At-Grade) Single-Lane	2013	No raised splitter islands on side street. Year Completed estimated (2012-2014).
Virginia Footills, NV Washoe Co. United States	Burghley Ln. / Calais Ln. (39.43197, -119.71530)	Unknown Existing	Unknown Unknown	3 Approaches 4 Driveways 0.0000	Other (At-Grade) Single-Lane
Egg Harbor, NJ Atlantic Co. United States	Tilton Road Circle (39.43177, -74.57915)	Signalized Roundabout/Circle Existing	Signal Unknown	5 Approaches 0 Driveways 0.0000	Other (At-Grade) Multilane (2 Lane, unspecified)		Hamburger shaped.
Montalto Uffugo, Calabria Cosenza Italy	SP248 (Corso Italia) / SP102 (Via Alessandro Manzoni) (39.43119, 16.23146)	Roundabout Existing	All-Way Yield Unknown	3 Approaches 0 Driveways	Other (At-Grade) Single-Lane
Parachute, CO Garfield Co. United States	Old Hwy 6 / I-70 WB Ramps (39.42982, -108.07610)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 51.8160	Freeway Ramps (Grade-Separated) Single-Lane	2012
Castle Rock, CO Douglas Co. United States	Sapphire Pointe Blvd. / Tremolite Dr. (39.42908, -104.85397)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 52.5832	Other (At-Grade) Single-Lane	2005	No buffer between sidewalk and circulatory roadway. ICD estimated from Google Maps linework.
Sykesville, MD Carroll Co. United States	Old Washington Rd. (MD 97) / W Old Liberty Rd. (39.42906, -77.00755)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 34.1330	Other (At-Grade) Single-Lane	2000	Year Completed estimated (1995-2005). ICD estimated from Google Maps linework.
Reisterstown, MD Baltimore Co. United States	Winged Foot Dr. / Crystal Downs Ct. / Kauri Cliffs Rd. (39.42897, -76.81445)	Other Existing	Unknown Unknown	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane		No splitter islands.
Middletown, DE New Castle Co. United States	St Annes Church Rd. / Levels Rd. (39.42842, -75.73887)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 35.9783	Other (At-Grade) Single-Lane	2010	Intersection was relocated when converted to roundabout. ICD estimated from Google Maps linework.
(unincorporated), CO Douglas Co. United States	W Happy Canyon Rd. / Castle Pines Dr. (39.42838, -104.90106)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 25.8306	Other (At-Grade) Single-Lane	2011	ICD estimated from Google Maps linework.
Parachute, CO Garfield Co. United States	Old Hwy 6 / I-70 EB Ramps / (unknown) (39.42828, -108.07440)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 57.9120	Freeway Ramps (Grade-Separated) Single-Lane	2012
Castle Rock, CO Douglas Co. United States	Sapphire Pointe Blvd. / Sulfur Ln. / Peridot Ln. (39.42788, -104.84576)	Other Existing	All-Way Yield None	4 Approaches 0 Driveways 63.6545	Other (At-Grade) Single-Lane	2003	Single-stage pedestrian crossings, fully traversable splitter islands, no buffer between sidewalk and circulatory roadway. Year Completed estimated (2002-2005). ICD estimated from Google Maps linework.
Montalto Uffugo, Calabria Cosenza Italy	SP241 (Corso Italia) / Via Busento (39.42609, 16.23949)	Roundabout Existing	All-Way Yield Unknown	3 Approaches 0 Driveways	Other (At-Grade) Single-Lane
Martinsville, IN Morgan Co. United States	SR 252 (Morgantown Rd.) / I-69 SB Ramps / Hospital Dr. (39.42578, -86.40211)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 0.0000	Freeway Ramps (Grade-Separated) Single-Lane	2021	Replaced at-grade signalized intersection. Opened to traffic 12/2021. https://i69finishline.com/construction-schedule/.
Virginia Footills, NV Washoe Co. United States	McCauley Ranch Blvd. / Gold Mine Dr. (39.42575, -119.70909)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 41.1480	Other (At-Grade) Single-Lane	2007	Painted splitter islands on all legs.
Middletown, DE New Castle Co. United States	St Annes Church Rd. / Wiggins Mill Rd. (39.42541, -75.72769)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 34.1348	Other (At-Grade) Single-Lane	2010	Previous intersection was relocated when converted to roundabout. ICD estimated from Google Maps linework.
Chillicothe, OH Ross Co. United States	SR 159 / SR 180 (39.42539, -82.95429)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane	2020	https://www.facebook.com/ODOTDistrict9/videos/ross-207-extension-first-trip/344554030308290/
Martinsville, IN Morgan Co. United States	SR 252 (Morgantown Rd.) / I-69 NB Ramps (39.42498, -86.40092)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 0.0000	Freeway Ramps (Grade-Separated) Single-Lane	2021	Replaced at-grade signalized intersection.
Castle Rock, CO Douglas Co. United States	Castle Rock Pkwy. / Promenade Pkwy. / I-25 SB Off-Ramp / I-25 NB Ramps (39.42427, -104.87786)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 43.3611	Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified)	2016	ICD estimated from Google Maps linework.
Martinsville, IN Morgan Co. United States	SR 252 (Morgantown Rd.) / Cramertown Loop (39.42394, -86.39938)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane	2021	Opened 12/2021 as part of the I-69 opening around Martinsville. https://i69finishline.com/construction-schedule/.
Castle Rock, CO Douglas Co. United States	Promenade Pkwy. / (parking lot) (39.42238, -104.87869)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 29.5233	Other (At-Grade) Multilane (2 Lane, unspecified)	2016	ICD estimated from Google Maps linework.
Linganore, MD Frederick Co. United States	Woodridge Rd. / Woodland Rd. (39.42155, -77.32956)	Other Existing	Unknown Unknown	3 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane		No splitter islands.
Owings Mills, MD Baltimore Co. United States	Tollgate Rd. / Lastgage Rd. (39.42149, -76.78482)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 28.6010	Other (At-Grade) Single-Lane	2004	ICD estimated from Google Maps linework.
Liberty Township, OH Butler Co. United States	Aspenwood Dr. / Aspen Trail Blvd. (39.42119, -84.44619)	Other Existing	All-Way Yield None	3 Approaches 0 Driveways 26.7559	Other (At-Grade) Single-Lane	2003	No splitter islands. ICD estimated from Google Maps linework.
Terre Haute, IN Vigo Co. United States	Willow Run Ct. / Aspen Ct. / Magnolia Ct. (39.42072, -87.32787)	Other Existing	Unknown Unknown	4 Approaches 0 Driveways 101.4886	Other (At-Grade) Single-Lane		ICD estimated from Google Maps linework.
Hanover Township, OH Butler Co. United States	Stahlheber Rd. / Morman Rd. (39.42038, -84.64629)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 39.6240	Other (At-Grade) Single-Lane	2023
Townsend, DE New Castle Co. United States	N Odessa Blvd. / Tweedsmere Dr. / Aviemore Dr. / Ravenglass Dr. (39.41965, -75.63644)	Other Existing	Unknown Unknown	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane
Chillicothe, OH Ross Co. United States	SR 159 / SR 207 (39.41938, -82.95615)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane	2020	https://www.facebook.com/ODOTDistrict9/videos/ross-207-extension-first-trip/344554030308290/
Linganore, MD Frederick Co. United States	Boyers Mill Rd. / Eaglehead Dr. (39.41912, -77.30650)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 33.5280	Other (At-Grade) Single-Lane	2018
Castle Rock, CO Douglas Co. United States	Promenade Pkwy. / (parking lots) (39.41882, -104.87797)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 41.5192	Other (At-Grade) Multilane (2 Lane, unspecified)	2016	ICD estimated from Google Maps linework.
Castle Rock, CO Douglas Co. United States	Castle Oaks Dr. / Arabella Dr. (39.41863, -104.77860)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 36.5760	Other (At-Grade) Single-Lane	2006
Lutherville-Timonium, MD Baltimore Co. United States	MD 139 (Charles St.) / Bellona Ave. (39.41790, -76.62900)	Roundabout Removed	All-Way Yield None	4 Approaches 0 Driveways 28.9560	Other (At-Grade) Multilane (2 Lane, unspecified)	1999	Two-lane circulatory roadway across northern half.
Liberty Township, OH Butler Co. United States	Kyles Station Rd. / Lesourdsville West Chester Rd. (39.41743, -84.43708)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 40.5974	Other (At-Grade) Single-Lane	2012	ICD estimated from Google Maps linework.
Castle Rock, CO Douglas Co. United States	N Meadows Dr. / (unknown) (39.41690, -104.89226)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 53.3400	Other (At-Grade) Multilane (2 Lane, 2x2 max)	2021
Silver Springs, NV Lyon Co. United States	US 50 / Alt US 95 (39.41616, -119.22497)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane	2020	https://mynews4.com/news/local/new-us-5095a-traffic-roundabout-to-open-in-silver-springs-tomorrow
Townsend, DE New Castle Co. United States	Robinson Rd. / Goldsborough Dr. (39.41614, -75.65156)	Other Existing	Unknown Unknown	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane		No splitter islands on three legs.
Liberty Township, OH Butler Co. United States	Kyles Station Rd. / Yankee Rd. (39.41489, -84.38421)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 40.5988	Other (At-Grade) Single-Lane	2013	ICD estimated from Google Maps linework.
Terre Haute, IN Vigo Co. United States	IN-46 / IN-641 SB Ramps (39.41463, -87.33553)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways	Freeway Ramps (Grade-Separated) Single-Lane	2016
Liberty Township, OH Butler Co. United States	Kyles Station Rd. / Cincinnati Dayton Rd. (39.41390, -84.36743)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 40.5994	Other (At-Grade) Single-Lane	2016	ICD estimated from Google Maps linework.
Castle Rock, CO Douglas Co. United States	New Beale St. / (parking) (39.41325, -104.87702)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 39.6240	Other (At-Grade) Single-Lane	2007	Year Completed estimated (2006-2008).
Sykesville, MD Carroll Co. United States	Bennett Rd. / Monroe Ave. (39.41306, -76.92967)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 26.7590	Other (At-Grade) Single-Lane	2006	ICD estimated from Google Maps linework.
Frederick, MD Frederick Co. United States	Hillsborough Dr. / Hillsborough Terrace / Forest Hills Ct. (39.41266, -77.34441)	Other Existing	Unknown Unknown	3 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane		No splitter islands.
Terre Haute, IN Vigo Co. United States	IN-46 / IN-641 NB Ramps (39.41253, -87.33459)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 36.9093	Freeway Ramps (Grade-Separated) Single-Lane	2016	ICD estimated from Google Maps linework.
Owings Mills, MD Baltimore Co. United States	Upper Mill Dr. / Bluestem Ct. /Spring Willow Ct. / Bayline Cir. (39.41253, -76.82032)	Other Existing	Unknown Unknown	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane		No splitter islands.
Fort Bragg, CA Mendocino Co. United States	Hwy 1 / Simpson Ln. (39.41239, -123.80830)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 52.5958	Other (At-Grade) Single-Lane	2012	ICD estimated from Google Maps linework.
Joppa, MD Harford Co. United States	Trimble Rd. / Fort Hoyle Rd. (39.41183, -76.33325)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 30.4800	Other (At-Grade) Single-Lane	2012	Year Completed estimated (2011-2013).
Perry Hall, MD Baltimore Co. United States	Seven Courts Dr. / Proctor Ln. (39.41060, -76.48483)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 27.4320	Other (At-Grade) Single-Lane	2008	Year Completed estimated (2007-2008).
Owings Mills, MD Baltimore Co. United States	New Town Blvd. / Rangeford Dr. (39.40957, -76.80654)	Other Existing	Unknown Unknown	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane
Townsend, DE New Castle Co. United States	Glen Mohr Dr. / Perthshire Dr. / S Odessa Blvd. (39.40908, -75.63633)	Other Existing	Unknown Unknown	3 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane
Casal da Boavista de São Gregório, Leiria Caldas da Rainha Portugal	Rua Doutor Vieira Pereira / Rua Inseparáveis De Lubango / Rua da Crocha (39.40878, -9.12190)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways	Other (At-Grade) Multilane (2 Lane, unspecified)
Montalto Uffugo, Calabria Cosenza Italy	SP247 (Via Sila) / Via Coretta (39.40860, 16.25275)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways	Other (At-Grade) Single-Lane
Frederick, MD Frederick Co. United States	Claridge Dr. S / Spring Ridge Pkwy. (39.40767, -77.33577)	Roundabout Existing	All-Way Yield None	3 Approaches 2 Driveways 35.0520	Other (At-Grade) Single-Lane	2002	Painted splitter islands on two legs. Year Completed estimated (1988-2005).
Owings Mills, MD Baltimore Co. United States	Grand Central Ave. / Waverly Ln. (39.40713, -76.78413)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 39.6240	Other (At-Grade) Single-Lane	2014	Year Completed estimated (2011-2014). West leg added 2015.
Rose, Calabria Cosenza Italy	SP234 / SP247 (39.40709, 16.26141)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways	Other (At-Grade) Single-Lane
Frederick, MD Frederick Co. United States	Briarcliff Ln. / Briarcliff Way / Cliffside Terrace (39.40696, -77.34925)	Other Existing	Unknown Unknown	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane		No splitter islands.
Frederick, MD Frederick Co. United States	Butterfly Ln. / Himes Ave. (39.40671, -77.44764)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Unknown	2020	https://www.cityoffrederickmd.gov/CivicAlerts.aspx?aid=6432
Frederick, MD Frederick Co. United States	S East St. / (future road) (39.40599, -77.40392)	Roundabout Existing	All-Way Yield None	2 Approaches 0 Driveways 51.8160	Other (At-Grade) Multilane (2 Lane, 2x1 max)	2009	Year Completed estimated (2009-2011). East leg is stubbed for future connection.
Fairfield Township, OH Butler Co. United States	Millikin Rd. / Morris Rd. / Carter Cir. (39.40585, -84.49448)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 36.5760	Other (At-Grade) Single-Lane	2024	Roundabout opened August 3, 2024.
Owings Mills, MD Baltimore Co. United States	Grand Central Ave. / (parking) (39.40581, -76.78033)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 48.7680	Other (At-Grade) Multilane (2 Lane, unspecified)	2014	Year Completed estimated (2011-2014).
White Marsh Station, MD Baltimore Co. United States	Carrington Dr. / Jerome Ave. (39.40574, -76.40236)	Other Existing	Unknown Unknown	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane		No splitter islands.
Perry Hall, MD Baltimore Co. United States	Scott Moore Way / Honeygo Center Dr. (39.40491, -76.44142)	Other Existing	All-Way Yield Unknown	3 Approaches 1 Driveways 0.0000	Other (At-Grade) Single-Lane		Pedestrian access to central island.
Perry Hall, MD Baltimore Co. United States	Georgia Belle Dr. / Fragrence Way / Harcrest Way (39.40467, -76.42700)	Other Existing	All-Way Yield Unknown	4 Approaches 4 Driveways 0.0000	Other (At-Grade) Single-Lane
Martinsville, IN Morgan Co. United States	SR 39 (Morton Ave.) / I-69 SB Ramps / Rogers Rd. (39.40439, -86.44597)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 0.0000	Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified)	2021	I-69 freeway opened 12/23/2021 - see https://content.govdelivery.com/accounts/INDOT/bulletins/30250b9 ** Roundabout opened with temporary configuration while new southbound ramp construction is completed
Townsend, DE New Castle Co. United States	Karins Circle (39.40433, -75.69677)	Other Existing	Unknown Unknown	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane
Perry Hall, MD Baltimore Co. United States	E Joppa Rd. / Scott Moore Way / Cowenton Ave. (39.40290, -76.44124)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 38.1000	Other (At-Grade) Single-Lane	2008	Right-turn bypass lane on west leg.
Reno, NV Washoe Co. United States	SR 341 (Geiger Grade Rd.) / Veterans Pkwy. / (parking) (39.40271, -119.74165)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 62.4840	Other (At-Grade) Multilane (2 Lane, unspecified)	2011	Double left (left, left-through-right) on south leg; double right (left-through-right, right) on west leg.
Liberty Township, OH Butler Co. United States	Millikin Rd. / Pinckney Trl. (39.40263, -84.43077)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 39.6240	Other (At-Grade) Single-Lane	2021
Martinsville, IN Morgan Co. United States	SR 39 / I-69 NB Ramps / Southview Dr. (39.40262, -86.44528)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 0.0000	Freeway Ramps (Grade-Separated) Single-Lane	2021	Year Completed estimated (2020-2021). https://i69finishline.com/construction-schedule/.
Linganore, MD Frederick Co. United States	Finn Dr. / Douglas Ave. / Huckleberry Way (39.40210, -77.29509)	Other Existing	Unknown Unknown	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane		Pedestrian access to central island. No splitter islands.
Towson, MD Baltimore Co. United States	MD 45 / MD 146 / Joppa Rd. / Allegheny Ave. (39.40185, -76.60230)	Roundabout Existing	All-Way Yield None	5 Approaches 0 Driveways 47.9892	Other (At-Grade) Multilane (2 Lane, unspecified)	1998	Opened October 1998. Exit striping retrofitted to roundabout after opening. Hotdog/racetrack shape. ICD estimated from Google Maps linework. 21442
Liberty Township, OH Butler Co. United States	Millikin Rd. / Maud Hughes Rd. (39.40153, -84.40943)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 39.6837	Other (At-Grade) Single-Lane	2013	ICD estimated from Google Maps linework.
Reno, NV Washoe Co. United States	Herz Blvd. / Summit Sierra Blvd. (39.40118, -119.75215)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 45.7200	Other (At-Grade) Multilane (2 Lane, unspecified)	2006	Concentric circulatory roadway striping. Year Completed estimated (2004-2006).
Carbondale, CO Garfield Co. United States	CO-133 / Main St. (39.40113, -107.21968)	Roundabout Existing	All-Way Yield Rectangular Rapid Flashing Beacon (RRFB)	4 Approaches 0 Driveways 42.4526	Other (At-Grade) Multilane (2 Lane, unspecified)	2013	ICD estimated from Google Maps linework.
Liberty Township, OH Butler Co. United States	Yankee Rd. / Millikin Rd. (39.40022, -84.38541)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 34.1471	Other (At-Grade) Single-Lane	2018	ICD estimated from Google Maps linework.
Silver Springs, NV Lyon Co. United States	US 50 / USA Pkwy. / Opal Ave. (39.40014, -119.26883)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 64.0080	Other (At-Grade) Multilane (3+ Lane)	2017	Consecutive double-left turns.
Villages of Winterset, MD Baltimore Co. United States	Runnymeade Rd. / New Town Blvd. / Bon Haven Ln. (39.39893, -76.81700)	Other Existing	Unknown Unknown	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane
Linganore, MD Frederick Co. United States	Lake Linganore Blvd. / Eaglehead Dr. (39.39732, -77.31047)	Roundabout Existing	All-Way Yield Unknown	3 Approaches 1 Driveways 0.0000	Other (At-Grade) Single-Lane	2019	Year Completed estimated (2018-2022).
New Market, MD Frederick Co. United States	Eaglehead Dr. / Tomahawk St. / Fallfish Ct. (39.39677, -77.30826)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 35.0520	Other (At-Grade) Multilane (2 Lane, unspecified)	2018	Year Completed estimated (2017-2018).
El Jebel, CO Eagle Co. United States	El Jebel Rd. / Shadow Rock Rd. (39.39554, -107.08999)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 128.2910	Other (At-Grade) Single-Lane	2017	https://www.aspentimes.com/news/el-jebel-road-roundabout-opens-saturday/ ICD estimated from Google Maps linework.
Frederick, MD Frederick Co. United States	Mercantile Dr. E / Rodes Cir. (39.39507, -77.44311)	Other Existing	Unknown Unknown	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane		No splitter islands.
Brigantine, NJ Atlantic Co. United States	Brigantine Blvd. / Bayshore Ave. / 34th St. S / (unknown) / (parking lot) (39.39482, -74.38953)	Other Existing	Other None	7 Approaches 0 Driveways 28.6120	Other (At-Grade) Multilane (2 Lane, unspecified)		All entries except Brigantine Blvd controled by stop signs. ICD estimated from Google Maps linework.
Frederick, MD Frederick Co. United States	Jefferson Station Blvd. / Jefferson Commons Way (39.39479, -77.44916)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 45.7200	Other (At-Grade) Multilane (2 Lane, 2x1 max)	2015	Year Completed estimated (2013-2015).
Liberty Township, OH Butler Co. United States	The Trails Blvd. / Kensington Trl. / Windsor Trl. / Cambridge Trl. (39.39451, -84.34693)	Other Existing	All-Way Stop None	4 Approaches 0 Driveways 50.7634	Other (At-Grade) Single-Lane	2002	Stop control; no splitter islands. ICD estimated from Google Maps linework.
Liberty Township, OH Butler Co. United States	Carriage House Blvd. / Thoroughbred Ln. / Winner Circle Dr. (39.39434, -84.45087)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 35.0730	Other (At-Grade) Single-Lane	2014	ICD estimated from Google Maps linework.
New Market, MD Frederick Co. United States	Empire Blvd. / Edwardian Ln. / Jacobian Pl. (39.39428, -77.29567)	Other Existing	Unknown Unknown	3 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane		Parking along circulatory roadway.
Owings Mills, MD Baltimore Co. United States	Painters Mill Rd. / Lyons Mill Rd. (39.39425, -76.78747)	Other Existing	All-Way Yield Unknown	3 Approaches 0 Driveways 0.0000	Other (At-Grade) Multilane (2 Lane, unspecified)
New Market, MD Frederick Co. United States	Eaglehead Dr. / Pecking Stone St. (39.39397, -77.30943)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 24.3840	Other (At-Grade) Single-lane w/ Traversable Central Island	2016	Year Completed estimated (2015-2017).