Roundabouts Database Index

29465 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
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).
Saint Lucie West, FL St. Lucie Co. United States	Champions Way / (unknown) (27.30724, -80.42218)	Other Existing	Uncontrolled None	3 Approaches 0 Driveways 31.0896	Other (At-Grade) Single-Lane	1999
Boardman, MI Grand Traverse Co. United States	Webster St. / Franklin St. (44.76060, -85.61118)	Traffic Calming Circle Existing	All-Way Yield None	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane	1999	https://www.record-eagle.com/archives/two-traffic-circles-going-in-this-fall/article_f3f9d4b6-9a9a-5faa-8100-8de9872bbcad.html
Boardman, MI Grand Traverse Co. United States	Webster St. / Wellington St. (44.76059, -85.61351)	Traffic Calming Circle Existing	All-Way Yield None	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane	1999	https://www.record-eagle.com/archives/two-traffic-circles-going-in-this-fall/article_f3f9d4b6-9a9a-5faa-8100-8de9872bbcad.html
Braden River, FL Manatee Co. United States	Glen Eagles Crossing / Warwick Gardens Ln. / Marlow Pl. / Heathfield Ct. (27.39999, -82.46689)	Other Existing	Unknown None	4 Approaches 0 Driveways 47.2440	Other (At-Grade) Single-Lane	1998	Pedestrian crossing within circulatory roadway.
Bradenton, FL Manatee Co. United States	96th St. E / 51st Terrace E (27.44937, -82.44575)	Other Existing	All-Way Yield None	4 Approaches 0 Driveways 51.8160	Other (At-Grade) Single-Lane	1998	No splitter islands on east and west legs. Large undefined areas on north and south legs.
Marriottsville, MD Howard Co. United States	Sand Hill Rd. / Sand Hill Manor Dr. / Mount View Rd. (39.31018, -76.93043)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 28.9560	Other (At-Grade) Single-Lane	1998	Year Completed estimated (1993-2002).
Buck Lake, FL Leon Co. United States	Pedrick Rd. / Easton Glen Dr. / Countryside Dr. (30.45227, -84.18178)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 22.8600	Other (At-Grade) Single-Lane	1998	Year Completed estimated (1994-1999).
Spring Hill, FL Hernando Co. United States	Wexford Blvd. / Billingham Blvd. (28.44547, -82.53505)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 73.1520	Other (At-Grade) Single-Lane	1998	Year Completed estimated (1995-1998).
Chesapeake, VA Chesapeake City United States	Warrington Blvd. / Great Marsh Ave. (36.74283, -76.21173)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 53.3400	Other (At-Grade) Multilane (2 Lane, 2x1 max)	1998	Unstriped circulatory roadway. Year Completed estimated (1994-2002).
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).
Prince Frederick, MD Calvert Co. United States	Prince Frederick Blvd. / Chapline Place Blvd. (38.55239, -76.59551)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 36.5760	Other (At-Grade) Single-Lane	1998	Year Completed estimated (1993-2003). Initially constructed as two-lane roundabout with concentric striped circulatory roadway. Converted to single-lane roundabout 2007-2009.
Gaithersburg, MD Montgomery Co. United States	Washingtonian Blvd. / Rio Blvd. (39.11678, -77.20122)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 36.5760	Other (At-Grade) Multilane (2 Lane, unspecified)	1998	Year Completed estimated (1993-2002).
Gaithersburg, MD Montgomery Co. United States	Washingtonian Blvd. / Washington Blvd. (39.11773, -77.20314)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 36.5760	Other (At-Grade) Multilane (2 Lane, unspecified)	1998	Year Completed estimated (1993-2002).
Severna Park, MD Anne Arundel Co. United States	East West Blvd. / Jumpers Hole Rd. / Adler Ct. (39.10765, -76.58306)	Roundabout Existing	All-Way Yield None	5 Approaches 0 Driveways 65.5320	Other (At-Grade) Single-Lane	1998	Elliptical shape. ICD 225 ft x 200 ft. Year Completed estimated (1994-2002).
Aurora, ON York Canada	Hollandview Trl. / Woodruff Crescent / Hollidge Blvd. (44.01096, -79.45395)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 33.0000	Other (At-Grade) Single-Lane	1998	Year Completed estimated (1996-2002).
Aurora, ON York Canada	Hollidge Blvd. / John West Way (44.01147, -79.45102)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 33.0000	Other (At-Grade) Single-Lane	1998	Year Completed estimated (1996-2002).
West Jordan, UT Salt Lake Co. United States	S Cobble Ridge Dr. / W Castle Pines Way (40.62410, -111.98247)	Other Existing	One-Way/Two-Way Stop None	4 Approaches 0 Driveways 26.2883	Other (At-Grade) Single-Lane	1998	No splitter islands; unmarked pedestrian crossings through circulatory roadway. ICD estimated from Google Maps linework.
Houston, TX Harris Co. United States	Westwood Dr. / Huge Oaks St. (29.79887, -95.49113)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 19.8120	Other (At-Grade) Single-Lane	1998	Implemented as part of a larger neighborhood street reconstruction project that incorporated systematic traffic calming elements.
Houston, TX Harris Co. United States	Westwood Dr. / Pine Chase Dr. (29.79887, -95.48897)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 19.8120	Other (At-Grade) Single-Lane	1998	Implemented as part of a larger neighborhood street reconstruction project that incorporated systematic traffic calming elements.
Hamilton, ON Hamilton Canada	Stonehenge Dr. / Thoroughbred Blvd. (43.21655, -79.95150)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 28.0000	Other (At-Grade) Single-Lane	1998	Year Completed estimated (before 2004).
Mount Pleasant, SC Charleston Co. United States	Park West Blvd. / Professional Ln. / (parking) (32.87348, -79.77707)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 59.4360	Other (At-Grade) Multilane (2 Lane, unspecified)	1998	Year Completed estimated (1995-1999).
Mount Pleasant, SC Charleston Co. United States	Mathis Ferry Rd. / Shelmore Blvd. (32.81177, -79.87913)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 27.1021	Other (At-Grade) Single-Lane	1998	ICD estimated from Google Maps linework.
(unincorporated), GA Gwinnett Co. United States	Meadow Park Dr. / Meadow Park Ln. / Meadow Bluff Ln. / Dovecote Trl. (34.06361, -84.10306)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 75.1945	Other (At-Grade) Single-Lane	1998	ICD estimated from Google Maps linework.
(unincorporated), FL Brevard Co. United States	Weatherwood Dr. / Adelaide Dr. / Woodhall Cir. (28.28324, -80.72941)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 42.0698	Other (At-Grade) Single-Lane	1998	Painted splitter islands. ICD estimated from Google Maps linework.
Boca Raton, FL Palm Beach Co. United States	SE 5th Ave. / SE 3rd St. (26.34535, -80.07758)	Other Existing	Other Unknown	3 Approaches 0 Driveways 28.8976	Other (At-Grade) Single-Lane	1998	Previously controlled by circle ICD estimated from Google Maps linework.
Jacksonville, FL Duval Co. United States	Southside Blvd. SB Ramp / Southside Blvd. Service Rd. / Como Lake Dr. (30.21216, -81.55235)	Roundabout Existing	All-Way Yield None	2 Approaches 0 Driveways 34.0593	Other (At-Grade) Single-Lane	1998	ICD estimated from Google Maps linework.
Tallahassee, FL Leon Co. United States	Heritage Park / Piney Z Plantation Rd. (30.43901, -84.19810)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 35.0102	Other (At-Grade) Single-Lane	1998	ICD estimated from Google Maps linework.
Tallahassee, FL Leon Co. United States	Kerry Forest Pkwy. / Shannon Lakes Dr. (30.53631, -84.21499)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 23.6597	Other (At-Grade) Single-Lane	1998	Right turn bypass lane with acceleration lane. Previously controlled by one-way stop ICD estimated from Google Maps linework.
Windsor Mill, MD Baltimore Co. United States	Lord Baltimore Dr. / Wildlife Dr. (39.31993, -76.75019)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 14.7833	Other (At-Grade) Single-Lane	1998	Year Completed estimated (1993-2002). ICD estimated from Google Maps linework.
Windsor Mill, MD Baltimore Co. United States	Lord Baltimore Dr. / Glen Spring Rd. / Kettle Ct. (39.31750, -76.75152)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 17.5558	Other (At-Grade) Single-Lane	1998	Year Completed estimated (1993-2002). ICD estimated from Google Maps linework.
Liberty Township, OH Butler Co. United States	Hughes Woods Ln. / Hughes Ridge Ln. (39.39099, -84.40464)	Other Existing	All-Way Yield None	3 Approaches 0 Driveways 43.3818	Other (At-Grade) Single-Lane	1998	No splitter islands. ICD estimated from Google Maps linework.
Springboro, OH Warren Co. United States	Settlers Walk Blvd. / Remick Blvd. / Stolle Dr. (39.57782, -84.21781)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 64.4378	Other (At-Grade) Single-Lane	1998	ICD estimated from Google Maps linework.
Brighton, CO Adams Co. United States	Goshawk St. / Tanager St. (39.97816, -104.74840)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 24.7104	Other (At-Grade) Single-Lane	1998	Year Completed estimated (1993-1999). ICD estimated from Google Maps linework.
Brighton, CO Adams Co. United States	Goshawk St. / Crane St. (39.97920, -104.74729)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 24.7101	Other (At-Grade) Single-Lane	1998	Year Completed estimated (1993-1999). ICD estimated from Google Maps linework.
Brighton, CO Adams Co. United States	Golden Eagle Pkwy. / Heron St. (39.97720, -104.74991)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 89.6910	Other (At-Grade) Single-Lane	1998	Year Completed estimated (1993-1999). ICD estimated from Google Maps linework.
Brighton, CO Adams Co. United States	Goshawk St. / Goshawk Ct. / Heron Ln. (39.97633, -104.74956)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 58.5745	Other (At-Grade) Single-Lane	1998	Year Completed estimated (1993-1999). ICD estimated from Google Maps linework.
Brighton, CO Adams Co. United States	Golden Eagle Pkwy. / Tanager St. (39.97858, -104.74845)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 84.1980	Other (At-Grade) Single-Lane	1998	Year Completed estimated (1993-1999). ICD estimated from Google Maps linework.
Brighton, CO Adams Co. United States	Golden Eagle Pkwy. / Crane St. / Southern St. (39.97963, -104.74733)	Roundabout Existing	All-Way Yield None	5 Approaches 0 Driveways 96.0941	Other (At-Grade) Single-Lane	1998	Year Completed estimated (1993-1999). ICD estimated from Google Maps linework.
Brighton, CO Adams Co. United States	Nighthawk Pkwy. / Crane St. (39.98134, -104.74878)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 65.8914	Other (At-Grade) Single-Lane	1998	Year Completed estimated (1993-1999). ICD estimated from Google Maps linework.
Brighton, CO Adams Co. United States	Nighthawk Pkwy. / Heron St. (39.98132, -104.75076)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 96.0917	Other (At-Grade) Single-Lane	1998	Year Completed estimated (1993-1999). ICD estimated from Google Maps linework.
(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.
Gaithersburg, MD Montgomery Co. United States	Winter Walk Dr. / Highland Ridge Ave. (39.12807, -77.22692)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 34.2800	Other (At-Grade) Single-Lane	1998	Year Completed estimated (1993-2002). Was cul-de-sac prior to addition of two more legs. ICD estimated from Google Maps linework.
Colorado Springs, CO El Paso Co. United States	Rockhurst Blvd. / University Park Blvd. (38.91005, -104.78980)	Roundabout Existing	Unknown Unknown	3 Approaches 0 Driveways 21.3750	Other (At-Grade) Single-Lane	1998	ICD estimated from Google Maps linework.
Abingdon, MD Harford Co. United States	Tollgate Rd. / Singer Rd. (39.47828, -76.32727)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 25.8121	Other (At-Grade) Single-Lane	1998	http://www.teachamerica.com/roundabouts/RA058B_ppr_Statmeyer.pdf#search=%22bel%20air%20roundabout%22 ICD estimated from Google Maps linework.
Provo, UT Utah Co. United States	1700 North / 1730 North / 1500 West (40.25650, -111.68530)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 26.4324	Other (At-Grade) Single-Lane	1998	ICD estimated from Google Maps linework.
Provo, UT Utah Co. United States	1730 North / 1740 West (40.25703, -111.68890)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 27.3437	Other (At-Grade) Single-Lane	1998	ICD estimated from Google Maps linework.
Denver, CO Denver Co. United States	E. Lowry Blvd. / E Fairmount Dr. / Rampart Way (39.71718, -104.89580)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 49.6091	Other (At-Grade) Multilane (2 Lane, unspecified)	1998	ICD estimated from Google Maps linework.
The Villages, FL Sumter Co. United States	Buena Vista Blvd. / Glenview Rd. / El Camino Real (28.95271, -82.00076)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 71.0641	Other (At-Grade) Multilane (2 Lane, unspecified)	1998	ICD estimated from Google Maps linework.
The Villages, FL Sumter Co. United States	Morse Blvd. / El Camino Real / Paige Pl. (28.94803, -81.95540)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 68.9771	Other (At-Grade) Multilane (2 Lane, unspecified)	1998	ICD estimated from Google Maps linework.
Denver, CO Denver Co. United States	N. Uinta Way / E. 6th Ave. Pkwy. (39.72570, -104.89200)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 51.4401	Other (At-Grade) Single-Lane	1998	ICD estimated from Google Maps linework.
Orlando, FL Orange Co. United States	N. Westmoreland Dr. / S. Lake Adair Blvd. (28.55947, -81.39339)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 22.0291	Other (At-Grade) Single-Lane	1998	Old circle, judging by condition of brick pavement; additional yield signs w/ minimum fine; official bike route; drainage constraints; skewed Functional Class: Collector? ICD estimated from Google Maps linework.
Davis, CA Yolo Co. United States	5th St. / Cantrill Dr. (38.55160, -121.72010)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 28.9547	Other (At-Grade) Single-Lane	1998	Police station on SW corner. Date estimated. ICD estimated from Google Maps linework.
Mount Pleasant, SC Charleston Co. United States	Rifle Range Rd. / Bowman Rd. (Veterans Circle) (32.80469, -79.84284)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 31.1197	Other (At-Grade) Single-Lane	1998	Year Completed estimated (1994-2002) ICD estimated from Google Maps linework.
Denver, CO Denver Co. United States	E. Lowry Blvd. / N. Uinta Way (39.71986, -104.89070)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 50.5258	Other (At-Grade) Multilane (2 Lane, unspecified)	1998	ICD estimated from Google Maps linework.
Denver, CO Denver Co. United States	E. Lowry Blvd. / Yosemite St. (39.72373, -104.88400)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 51.4416	Other (At-Grade) Multilane (2 Lane, unspecified)	1998	ICD estimated from Google Maps linework.
Golden, CO Jefferson Co. United States	S. Golden Rd. / Johnson Rd. / 16th St. (39.74207, -105.20060)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 37.6526	Other (At-Grade) Multilane (2 Lane, unspecified)	1998	Documented in 2002 ITE District 6 Annual Meeting Compendium of Papers. Serves retail shopping corridor. Functional Class: Arterial ICD estimated from Google Maps linework.
Golden, CO Jefferson Co. United States	S. Golden Rd. / Lunnonhaus Dr. (39.74062, -105.19840)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 32.0040	Other (At-Grade) Multilane (2 Lane, unspecified)	1998	Documented in 2002 ITE District 6 Annual Meeting Compendium of Papers. Serves retail shopping corridor. Small two-lane roundabout but with nontraversable central island.
Golden, CO Jefferson Co. United States	S. Golden Rd. / Utah St. (39.73919, -105.19620)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 23.8782	Other (At-Grade) Multilane (2 Lane, unspecified)	1998	Documented in 2002 ITE District 6 Annual Meeting Compendium of Papers. Serves retail shopping corridor. Previously controlled by two-way stop Functional Class: Arterial ICD estimated from Google Maps linework.
Golden, CO Jefferson Co. United States	S. Golden Rd. / Ulysses St. (39.73771, -105.19390)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 38.5734	Other (At-Grade) Single-Lane	1998	Documented in 2002 ITE District 6 Annual Meeting Compendium of Papers. Serves retail shopping corridor. Main entrance to shopping center. Functional Class: Arterial ICD estimated from Google Maps linework.
Grand Junction, CO Mesa Co. United States	Horizon Dr. / 12th St. (39.10165, -108.55234)	Roundabout Existing	All-Way Yield None	4 Approaches 1 Driveways 39.6240	Other (At-Grade) Single-Lane	1998	Bicycle-only (bike-only) driveway into circulatory roadway in northeast quadrant, leading into bicycle (bike) roundabout.
Delray Beach, FL Palm Beach Co. United States	Lake Ida Rd. / Via Flora Dr. (26.46919, -80.13670)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 24.5900	Other (At-Grade) Single-Lane	1998	Fatal crash January 28, 2005. 11861-05. ICD estimated from Google Maps linework.
Boynton Beach, FL Palm Beach Co. United States	Hagen Ranch Rd. / Charleston Shores Blvd. (26.56520, -80.15560)	Roundabout Existing	All-Way Yield Active Pedestrian Warning (flashing yellow)	4 Approaches 0 Driveways 23.5012	Other (At-Grade) Single-Lane	1998	ICD estimated from Google Maps linework.
Greenbelt, MD Prince Georges Co. United States	Hanover Pkwy. / Village Park Dr. / Schrom Hills Community Park entrance (38.98378, -76.87333)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 19.4960	Other (At-Grade) Single-Lane	1998	Year Completed estimated (1994-2001). ICD estimated from Google Maps linework.
Carmel, IN Hamilton Co. United States	Hazel Dell Pkwy. / E 126th St. (39.97119, -86.07069)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 48.7680	Other (At-Grade) Multilane (2 Lane, 2x2 max)	1998
Carmel, IN Hamilton Co. United States	Hazel Dell Pkwy. / E 131st St. (39.97845, -86.07054)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 48.7680	Other (At-Grade) Multilane (2 Lane, 2x2 max)	1998	Built in late 1990s.Converted to multilane 2010-2012. Right-turn-only lane on west leg; left-turn-only lane on east leg.
Truckee, CA Nevada Co. United States	Donner Pass Rd. / W. River St. / McIver Crossing (39.32510, -120.19200)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 35.1077	Other (At-Grade) Single-Lane	1998	Fatal crash. 11861-05. Functional Class: Arterial ICD estimated from Google Maps linework.
Montréal, QC Montréal Region Canada	Ave. Marie-Curie / Blvd. Alfred Nobel (45.48518, -73.76222)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 37.6801	Other (At-Grade) Multilane (2 Lane, unspecified)	1998	Completed November 1998. Functional Class: Collector ICD estimated from Google Maps linework.
Port Orchard, WA Kitsap Co. United States	Mile Hill Dr. (Hwy 166) / Bethel Ave. (47.53467, -122.62730)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 38.7045	Other (At-Grade) Single-Lane	1998	Previously a Y Intersection. Opened June 1998. Previously controlled by two-way stop Functional Class: Arterial ICD estimated from Google Maps linework.
Arcata, CA Humboldt Co. United States	West End Rd. / Spear Ave. / Saint Louis Rd. (40.88910, -124.08210)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 27.0866	Other (At-Grade) Single-Lane	1998	Functional Class: Arterial ICD estimated from Google Maps linework.
Ellicott City, MD Howard Co. United States	MD 103 / MD 100 WB Ramps (39.20846, -76.78294)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 33.3154	Freeway Ramps (Grade-Separated) Single-Lane	1998	Opened November 1998. ICD estimated from Google Maps linework.
Ellicott City, MD Howard Co. United States	MD 103 / MD 100 EB Ramps (39.20733, -76.78243)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 30.5396	Freeway Ramps (Grade-Separated) Single-Lane	1998	Opened November 1998. ICD estimated from Google Maps linework.
Ellicott City, MD Howard Co. United States	Snowden River Pkwy. / MD 100 WB Ramps (39.21233, -76.79544)	Roundabout Existing	All-Way Yield Metering Signal	3 Approaches 0 Driveways 25.9105	Freeway Ramps (Grade-Separated) Single-Lane	1998	Opened November 1998. Metering signal on Snowden River Pkwy approach. 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.
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
Naples, FL Collier Co. United States	7th St. N. / 3rd Ave. N. (26.15530, -81.80524)	Traffic Calming Circle Existing	All-Way Yield None	4 Approaches 0 Driveways 9.6483	Other (At-Grade) Single-Lane	1998	Installed for traffic calming. Detailed traffic volume, speed data available. ICD estimated from Google Maps linework.
Naples, FL Collier Co. United States	7th St. N. / 7th Ave. N. (26.15619, -81.79971)	Traffic Calming Circle Existing	All-Way Yield None	4 Approaches 0 Driveways 22.5125	Other (At-Grade) Single-Lane	1998	Installed for traffic calming. Detailed traffic volume, speed data available. Previously controlled by two-way stop Functional Class: Collector ICD estimated from Google Maps linework.
Henderson (Seven Hills), NV Clark Co. United States	Grand Hills Dr. / Rio Secoo Golf Club (35.97713, -115.11100)	Other Existing	Unknown Unknown	3 Approaches 0 Driveways 74.4214	Other (At-Grade) Single-Lane	1998	Functional Class: Collector ICD estimated from Google Maps linework.
Windsor, CT Hartford Co. United States	Hayden Station Rd. / Lancaster Dr. / Center St. (41.89280, -72.63409)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 24.8935	Other (At-Grade) Single-Lane	1998	Functional Class: Collector. Year Completed estimated (1994-2003). ICD estimated from Google Maps linework.
Windsor, CT Hartford Co. United States	Hayden Station Rd. / Pond Rd. (41.89371, -72.64065)	Roundabout Existing	All-Way Yield None	3 Approaches 1 Driveways 24.0041	Other (At-Grade) Single-Lane	1998	Functional Class: Collector. Year Completed estimated (1992-2003). ICD estimated from Google Maps linework.
Windsor, CT Hartford Co. United States	Prospect Hill Rd. / Lang Rd. (41.89153, -72.69762)	Roundabout Existing	All-Way Yield None	3 Approaches 1 Driveways 25.7830	Other (At-Grade) Single-Lane	1998	Located at entrance to industrial park. Year Completed estimated (1992-2004). ICD estimated from Google Maps linework.
Calgary, AB Calgary Region Canada	Springbank Blvd. / Spring Mews (51.01849, -114.19630)	Traffic Calming Circle Existing	All-Way Yield None	3 Approaches 0 Driveways 30.0000	Other (At-Grade) Single-Lane	1998
Evergreen, CO Jefferson Co. United States	CR 65 / Bergen Pkwy. (39.69101, -105.36050)	Roundabout Existing	Unknown Unknown	3 Approaches 1 Driveways 26.6520	Other (At-Grade) Single-Lane	1998	ICD estimated from Google Maps linework.
Loveland, CO Larimer Co. United States	Scenic Dr. / Lookout Dr. (40.39773, -105.13528)	Other Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 24.3840	Other (At-Grade) Single-Lane	1998	Painted splitter islands; unmarked pedestrian crossings along circulatory roadway.
Loveland, CO Larimer Co. United States	Scenic Dr. / Foothills Dr. (40.39674, -105.13522)	Other Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 24.3840	Other (At-Grade) Single-Lane	1998	Painted splitter islands; unmarked pedestrian crossings along circulatory roadway.
Fairview, CA Alameda Co. United States	Fairview Ave. / Five Canyons Pkwy. / East Ave. (Star Ridge Rd.) (37.67520, -122.03220)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 20.7965	Other (At-Grade) Single-Lane	1998	https://www.sfgate.com/bayarea/article/COMMUTER-CHRONICLES-IN-A-ROUNDABOUT-WAY-The-2975842.php ICD estimated from Google Maps linework.
Lakeport, CA Lake Co. United States	Todd Rd. / Parallel Dr. (39.03226, -122.92521)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 31.5433	Other (At-Grade) Single-Lane	1998	Year Completed estimated (1993-2003). ICD estimated from Google Maps linework.
Woodbridge, VA Prince William Co. United States	Greatbridge Rd. / Mays Quarter Rd. (38.68304, -77.34802)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 44.7509	Other (At-Grade) Single-Lane	1998	Year Completed estimated (1994-2002). ICD estimated from Google Maps linework.
Parker, CO Douglas Co. United States	Clubhouse Dr. / S Pikes Peak Dr. (39.51305, -104.76302)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 28.5634	Other (At-Grade) Single-Lane	1998	Year Completed estimated (1994-1999). ICD estimated from Google Maps linework.
Vaughan, ON York Canada	S Park Rd. / S Park Rd. (43.83875, -79.39747)	Other Existing	Unknown None	2 Approaches 0 Driveways 40.0000	Other (At-Grade) Single-Lane	1998	Year Completed estimated (before 2002)
Denver, CO Denver Co. United States	Sports Blvd. / Wright St. (39.71698, -104.89131)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 18.3738	Other (At-Grade) Single-Lane	1997	Year Completed estimated (1993-1999). ICD estimated from Google Maps linework.
Denver, CO Denver Co. United States	Sports Blvd. / Great Lawn Dr. (39.71922, -104.88740)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 15.6172	Other (At-Grade) Single-Lane	1997	Year Completed estimated (1993-1999). ICD estimated from Google Maps linework.
Fairfield, OH Butler Co. United States	Seward Rd. / Essex Orchard Station Dr. (39.31580, -84.49502)	Roundabout Existing	All-Way Yield None	3 Approaches 1 Driveways 22.1763	Other (At-Grade) Single-Lane	1997	Year Completed estimated (1994-2000). ICD estimated from Google Maps linework.
Fairfield, OH Butler Co. United States	Seward Rd. / Kohn Dr. (39.31476, -84.49520)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 20.3285	Other (At-Grade) Single-Lane	1997	Little deflection for northbound through movement. Year Completed estimated (1994-2000). ICD estimated from Google Maps linework.
Loveland, CO Larimer Co. United States	Crestone Dr. / Foothills Dr. (40.39717, -105.13149)	Other Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 24.3840	Other (At-Grade) Single-Lane	1997	Painted splitter islands; unmarked pedestrian crossings along circulatory roadway.
Manhattan, KS Riley Co. United States	Gary Ave. / Candlewood Dr. (39.21087, -96.61885)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 21.2841	Other (At-Grade) Single-Lane	1997	Considered to be the First Modern Roundabout in the State of Kansas. Previously controlled by two-way stop Functional Class: Collector ICD estimated from Google Maps linework.
Davis, CA Yolo Co. United States	Anderson Rd. / Alvarado Ave. (38.56210, -121.75850)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 25.2149	Other (At-Grade) Single-Lane	1997	Moderate to high pedestrian and bicycle volume. Located in residential area frequented by commuters to University of California at Davis. ICD estimated from Google Maps linework.
University Place, WA Pierce Co. United States	Grandview Dr. / Olympic Blvd. (47.22188, -122.55790)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 25.1454	Other (At-Grade) Single-Lane	1997	Curtis High School and Curtis Junior High School on NE corner of roundabout. Opened August 1997. Functional Class: Arterial ICD estimated from Google Maps linework.
Addison, TX Dallas Co. United States	Addison Cir. / Quorum Dr. (32.96138, -96.82592)	Other Existing	Unknown Unknown	4 Approaches 0 Driveways 54.8640	Other (At-Grade) Multilane (2 Lane, unspecified)	1997	.
West Palm Beach, FL Palm Beach Co. United States	S. Quadrille Blvd. (El Campeon Blvd.) / Fern St. (26.71040, -80.05505)	Roundabout Removed	All-Way Yield Unknown	4 Approaches 0 Driveways 30.4800	Other (At-Grade) Multilane (2 Lane, unspecified)	1997	Replaced with TWSC 1995-1999; signalized in 2019.