Roundabouts Database

29954 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
Benton, AR
Saline Co.
United States 		Congo Rd. / Longhills Rd.
(34.60037, -92.56628) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
36.5760 		Other (At-Grade)
Single-Lane 		2020 Year Completed estimated (2019-2020).
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
Corner Brook, NL
Division 5
Canada 		Confederation Dr. / West Valley Rd.
(48.94181, -57.91709) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
1 Driveways
35.0000 		Other (At-Grade)
Single-Lane 		2021 http://ntv.ca/corner-brook-opens-first-roundabout/
Laguna, CA
Sacramento Co.
United States 		Coney Island Circle
(38.40992, -121.47661) 		Other
Existing 		Unknown
Unknown 		2 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Unknown
West Wickham, England
Greater London
United Kingdom 		Coney Hall Roundabout (Glebe Way / Addington Rd.)
(51.37113, -0.00137) 		Roundabout
Existing 		All-Way Yield
Unknown 		4 Approaches
0 Driveways
32.0603 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		ICD estimated from Google Maps linework.
Waterloo, ON
Waterloo
Canada 		Conestoga Rd. / Kraus Dr.
(43.49983, -80.52906) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
35.0000 		Other (At-Grade)
Single-Lane 		2009 Add lane right-turn bypass lane on west leg.
Pyes Pa, Bay of Plenty
Western Bay of Plenty
New Zealand 		Condor Dr. / Bellbird Rise / Kakapo Pl.
(-37.74418, 176.13414) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
 Other (At-Grade)
Single-Lane
Forest Park, MO
St. Louis City Co.
United States 		Concourse Dr. / Washington Dr.
(38.63495, -90.28480) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
23.3234 		Other (At-Grade)
Single-Lane 		2009 ICD estimated from Google Maps linework.
Raleigh, NC
Wake Co.
United States 		Concord St. / ME Valentine Dr.
(35.78880, -78.67778) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
 Other (At-Grade)
Single-lane w/ Traversable Central Island 		2012 Year Completed estimated (2010-2013).
Knoxville, TN
Knox Co.
United States 		Concord Rd. / Northshore Dr.
(35.86081, -84.14137) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
32.9098 		Other (At-Grade)
Single-Lane 		2008 http://www.knoxnews.com/news/2008/feb/20/countys-first-roundabout-opened-concord-northshore/ ICD estimated from Google Maps linework.
Lafayette, IN
Tippecanoe Co.
United States 		Concord Rd. / Maple Point Dr.
(40.38670, -86.85735) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
40.0271 		Other (At-Grade)
Single-Lane 		2013 ICD estimated from Google Maps linework.
Anderson, SC
Anderson Co.
United States 		Concord Rd. / Harris Bridge Rd. / Cathey Rd.
(34.59397, -82.63681) 		Roundabout
Existing 		All-Way Yield
Unknown 		4 Approaches
0 Driveways
34.4108 		Other (At-Grade)
Single-Lane 		2018 ICD estimated from Google Maps linework.
Lewisville, NC
Forsyth Co.
United States 		Concord Church Rd. / US 421 SB Ramp / Williams Rd.
(36.08978, -80.43072) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
29.9191 		Freeway Ramps (Grade-Separated)
Single-Lane 		2000 Solved capacity problem. Previously controlled by one-way stop ICD estimated from Google Maps linework.
Lewisville, NC
Forsyth Co.
United States 		Concord Church Rd. / US 421 NB Ramps
(36.09143, -80.42963) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
30.8835 		Freeway Ramps (Grade-Separated)
Single-Lane 		2003 Mirror image of other ramp. ICD estimated from Google Maps linework.
Cambridge, MA
Middlesex Co.
United States 		Concord Ave / New St / Fresh Pond Pkwy (US 3, Rte 2)
(42.38670, -71.14100) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
1 Driveways
38.8144 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		Pavement markings for bike conflict areas added in approx. 2018 (on New St exit). ICD estimated from Google Maps linework.
Cambridge, MA
Middlesex Co.
United States 		Concord Ave (US 3) / Alewife Brook Parkway (Rte 2)
(42.38844, -71.14346) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
1 Driveways
56.4557 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		Pavement markings installed in 2017. No crosswalks. ICD estimated from Google Maps linework.
Enniskillen, ON
Durham
Canada 		Concession Road 8 (Regional Road 3) / Bowmanville Ave. (Regional Road 57)
(44.01760, -78.76029) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
 Other (At-Grade)
Single-Lane 		2023 https://www.durhamregion.com/news/new-roundabout-now-open-in-enniskillen/article_351c65bf-e898-5940-aa6d-bb0badcc6c1d.html
Bowmanville, ON
Durham
Canada 		Concession Road 3 / Middle Rd. / Scugog St.
(43.93418, -78.70130) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
36.0000 		Other (At-Grade)
Single-Lane 		2018 Year Completed estimated (2017-2018).
Yass, NSW
Yass Valley
Australia 		Comur St. / Polding St. / Adele St.
(-34.84545, 148.91421) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
 Other (At-Grade)
Single-Lane
Ormeau, QLD
Gold Coast
Australia 		Computer Rd. / Lahrs Rd. / Eastern Service Rd. / Mavis Ct. / M1 (Pacific Motorway) SB Ramps
(-27.75726, 153.24302) 		Roundabout
Existing 		All-Way Yield
None 		5 Approaches
0 Driveways
 Freeway Ramps (Grade-Separated)
Single-Lane
Yatala, QLD
Gold Coast
Australia 		Computer Rd. / Cuthbert Dr. / M1 (Pacific Motorway) NB Ramps
(-27.75900, 153.24143) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
 Freeway Ramps (Grade-Separated)
Single-Lane
Mount Duneed, VIC
Greater Geelong
Australia 		Compass Way / Magnetic Dr.
(-38.22236, 144.33569) 		Roundabout
Existing 		All-Way Yield
Unknown 		4 Approaches
0 Driveways
 Other (At-Grade)
Single-Lane
Leland, NC
Brunswick Co.
United States 		Compass Pointe South Wynd / Compass Pointe West Wynd
(34.27942, -78.09663) 		Other
Existing 		All-Way Yield
Unknown 		3 Approaches
0 Driveways
46.3831 		Other (At-Grade)
Single-Lane 		ICD = 120 ft. No splitter islands. ICD estimated from Google Maps linework.
Leland, NC
Brunswick Co.
United States 		Compass Pointe South Wynd / Compass Pointe North Wynd / Hammocks Cove Trl. / Compass Pointe East Wynd
(34.27790, -78.08830) 		Other
Existing 		All-Way Yield
Unknown 		4 Approaches
0 Driveways
40.4626 		Other (At-Grade)
Single-Lane 		ICD = 110 ft. No splitter islands. ICD estimated from Google Maps linework.
Leland, NC
Brunswick Co.
United States 		Compass Pointe East Wynd / Oak Bridge Way
(34.27060, -78.08616) 		Other
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
39.6240 		Other (At-Grade)
Single-Lane 		No splitter islands.
Leland, NC
Brunswisk Co.
United States 		Compass Pointe East Wynd / Bearing Wynd
(34.27487, -78.08305) 		Other
Existing 		All-Way Yield
Unknown 		4 Approaches
0 Driveways
24.3840 		Other (At-Grade)
Single-Lane 		No splitter islands.
Wetumpka, AL
Elmore Co.
United States 		Company St. / Orline St. / Spring St.
(32.53874, -86.20352) 		Roundabout
Existing 		All-Way Yield
Unknown 		4 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane 		2021 Company Street is one-way into roundabout on southwest leg; Orline Street is one-way out of the roundabout on west leg. Converted from uncontrolled triangle intersection with stop control on Spring St. https://satellites.pro/Wetumpka_map.Alabama_region.USA#32.538481,-86.203482,19 https://www.thewetumpkaherald.com/news/downtown-roundabout-sidewalks-project-set-to-begin-soon/article_4a1c0578-6fdd-11eb-b5f6-2b2d840f04e5.html
Sydenham, VIC
Brimbank
Australia 		Community Hub / Meade Way
(-37.70159, 144.75944) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
1 Driveways
 Other (At-Grade)
Single-Lane
Sydenham, VIC
Brimbank
Australia 		Community Hub / Delbridge Dr.
(-37.70163, 144.76143) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
 Other (At-Grade)
Single-Lane
Hillside, VIC
Melton
Australia 		Community Hub / Catherine Dr.
(-37.69962, 144.74671) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
 Other (At-Grade)
Single-Lane
Charlotte, NC
Mecklenburg Co.
United States 		Community House Rd. / Willow Rock Dr. / YMCA Entrance
(35.04132, -80.82973) 		Roundabout
Existing 		All-Way Yield
Unknown 		3 Approaches
1 Driveways
26.4017 		Other (At-Grade)
Single-Lane 		2016 Yield-controlled bypass lane. ICD estimated from Google Maps linework.
Charlotte, NC
Mecklenburg Co.
United States 		Community House Rd. / Bryant Farms Rd.
(35.04332, -80.83015) 		Roundabout
Existing 		All-Way Yield
Unknown 		3 Approaches
0 Driveways
46.9353 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		2016 ICD estimated from Google Maps linework.
Waconia, MN
Carver Co.
United States 		Community Dr. / Wildcat Way
(44.83690, -93.81348) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
40.6521 		Other (At-Grade)
Single-Lane 		2007 ICD estimated from Google Maps linework.
Schertz, TX
Guadalupe Co.
United States 		Community Circle Dr. / (parking)
(29.56727, -98.26762) 		Other
Existing 		Uncontrolled
None 		4 Approaches
0 Driveways
42.6717 		Other (At-Grade)
Single-Lane 		2010
Roswell, GA
Fulton Co.
United States 		Community Circle / Roswell City Hall
(34.02222, -84.35917) 		Other
Existing 		Unknown
Unknown 		2 Approaches
0 Driveways
26.7269 		Other (At-Grade)
Single-Lane 		ICD estimated from Google Maps linework.
San Jose, CA
Santa Clara Co.
United States 		Communications Hill Blvd. / Llano De Los Robles Ave.
(37.28371, -121.84892) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
36.5760 		Other (At-Grade)
Single-Lane 		2017 North leg added 2020.
Mount Pleasant, SC
Charleston Co.
United States 		Commonwealth Dr. / Coastal Crab Rd.
(32.90550, -79.77413) 		Other
Existing 		Other
None 		4 Approaches
0 Driveways
30.0816 		Other (At-Grade)
Single-Lane 		Yield control on two legs, no control on two legs. ICD estimated from Google Maps linework.
Winchester, VA
Frederick Co.
United States 		Commonwealth Ct. / (parking lot)
(39.12518, -78.19009) 		Roundabout
Existing 		Unknown
Unknown 		4 Approaches
0 Driveways
28.7222 		Other (At-Grade)
Single-Lane 		2007 ICD estimated from Google Maps linework.
Sugar Land, TX
Fort Bend Co.
United States 		Commonwealth Blvd. / LJ Pkwy.
(29.56659, -95.59150) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
39.6240 		Other (At-Grade)
Single-Lane 		2016 .
Sugar Land, TX
Fort Bend Co.
United States 		Commonwealth Blvd. / L.J. Pkwy.
(29.55919, -95.64098) 		Other
Existing 		Uncontrolled
None 		3 Approaches
0 Driveways
39.6240 		Other (At-Grade)
Single-Lane 		2007 No splitter islands on two legs. Main entrance to Sugar Land Memorial Park and Brazos River Corridor.
Prosper, TX
Denton Co.
United States 		Commons Way / Madison Square Way
(33.24175, -96.85610) 		Other
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
32.0037 		Other (At-Grade)
Single-Lane 		2017 No splitter islands.
Pflugerville, TX
Travis Co.
United States 		Commons Pkwy. / Ambling Trl.
(30.48456, -97.57125) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
36.5760 		Other (At-Grade)
Single-Lane 		2007 Year Completed estimated (2006-2008).
Miramar Beach, FL
Okaloosa Co.
United States 		Commons Dr. W / Indian Bayou Dr.
(30.39025, -86.45789) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
41.2091 		Other (At-Grade)
Single-Lane 		2009 ICD estimated from Google Maps linework.
Miramar Beach, FL
Okaloosa Co.
United States 		Commons Dr. W / Home Depot Entrance
(30.38823, -86.44289) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
35.0285 		Other (At-Grade)
Single-Lane 		2002 ICD estimated from Google Maps linework.
Destin, FL
Okaloosa Co.
United States 		Commons Dr. E / Matthew Blvd.
(30.38915, -86.43053) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
1 Driveways
42.6720 		Other (At-Grade)
Single-Lane 		2009 Year Completed estimated (2007-2010).
Vernon, BC
North Okanagan
Canada 		Commonage Rd. / Predator Ridge Rd.
(50.18361, -119.38749) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
34.0000 		Other (At-Grade)
Single-Lane 		2017 Year Completed estimated (2016-2018).
Watertown, MA
Middlesex Co.
United States 		Common St. / Orchard St. / Church St.
(42.37243, -71.17858) 		Roundabout
Existing 		All-Way Yield
None 		5 Approaches
0 Driveways
33.5277 		Other (At-Grade)
Single-Lane 		2020
Squamish, BC
Squamish-Lillooet District
Canada 		Commercial Way / Discovery Way
(49.72279, -123.15057) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
50.0000 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		2006 Home Depot retail center on one corner. Uses fishhook signs and pavement markings. Year Completed estimated (2004-2009).
Mount Gambier, SA
Mount Gambier
Australia 		Commercial St. W / Sutton Ave. / White Ave.
(-37.82264, 140.76252) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
 Other (At-Grade)
Single-Lane
Midtown, MO
Greene Co.
United States 		Commercial St. / Washington Ave.
(37.23001, -93.28546) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
16.1660 		Other (At-Grade)
Single-lane w/ Traversable Central Island 		2016 Year Completed estimated (2015-2017). ICD estimated from Google Maps linework.
New Minas, NS
Kings
Canada 		Commercial St. / Granite Dr. / Old Dyke Rd.
(45.06908, -64.44179) 		Roundabout
Existing 		All-Way Yield
Unknown 		4 Approaches
0 Driveways
37.9575 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		2010 ICD estimated from Google Maps linework.
Caroline Springs, VIC
Melton
Australia 		Commercial Rd./ The Esplanade / Broadway
(-37.73012, 144.74763) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
 Other (At-Grade)
Multilane (2 Lane, unspecified)
Morwell, VIC
Latrobe
Australia 		Commercial Rd. / White St.
(-38.23858, 146.40152) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
 Other (At-Grade)
Single-Lane
Adelaide, SA
Salisbury
Australia 		Commercial Rd. / Purling Ave.
(-34.74943, 138.64210) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
 Other (At-Grade)
Multilane (2 Lane, unspecified)
Elizabeth South, SA
Playford
Australia 		Commercial Rd. / Kettering Rd. / Fisher St.
(-34.75212, 138.64659) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
 Other (At-Grade)
Multilane (2 Lane, unspecified)
Salisbury North, SA
Salisbury
Australia 		Commercial Rd. / Bagster Rd. / First Ave.
(-34.74769, 138.63889) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
 Other (At-Grade)
Single-Lane
Harker Heights, TX
Bell Co.
United States 		Commercial Dr. / Heights Dr.
(31.06884, -97.67108) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane 		2019 https://kdhnews.com/news/local/traffic-circle-now-open-in-harker-heights/article_d3c678c2-6c1e-11e9-8d7e-33a4796886d7.html
Anacortes, WA
Skagit Co.
United States 		Commercial Ave. / SR20 Spur
(48.49332, -122.61280) 		Roundabout
Existing 		Unknown
Unknown 		3 Approaches
0 Driveways
34.8256 		Other (At-Grade)
Single-Lane 		2009 ICD estimated from Google Maps linework.
Whakatane, Bay of Plenty
Whakatane
New Zealand 		Commerce St. / Gorge Rd. / Valley Rd. / Goulstone Rd.
(-37.96298, 176.99161) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
 Other (At-Grade)
Single-Lane
Franklin, IN
Johnson Co.
United States 		Commerce Dr. / Cumberland Dr. / Simon Rd.
(39.50767, -86.08405) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane 		2023 https://dailyjournal.net/2023/08/01/sculpture-shaped-planned-by-students-unveiled-at-fchs-roundabout/
Coralville, IA
Johnson Co.
United States 		Commerce Dr. / Commercial Park
(41.69560, -91.61393) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
39.2389 		Other (At-Grade)
Single-Lane 		2014 ICD estimated from Google Maps linework.
(unincorporated), FL
St. Lucie Co.
United States 		Commerce Center Dr. / Reserve Blvd.
(27.31159, -80.42337) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
55.1819 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		1997 Concentric circulatory roadway striping. ICD estimated from Google Maps linework.
(unincorporated), FL
St. Lucie Co.
United States 		Commerce Center Dr. / Nuova Way
(27.30068, -80.42832) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
57.3099 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		2006 Concentric circulatory roadway striping. ICD estimated from Google Maps linework.
(unincorporated), FL
St. Lucie Co.
United States 		Commerce Center Dr. / (unknown)
(27.29606, -80.42504) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
97.6432 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		2007 Concentric circulatory roadway striping. ICD estimated from Google Maps linework.
Rohnert Park, CA
Sonoma Co.
United States 		Commerce Blvd. / Southwest Blvd.
(38.33615, -122.71171) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane 		2022 https://www.pressdemocrat.com/article/news/rohnert-park-roundabout-completed-opens-wednesday/?artslide=0
Newtownards, N. Ireland
North Down & Ards
United Kingdom 		Comber Road Roundabout [A20 (Castlebawn Rd. - Messines Rd.) / A21 (Comber Rd.)]
(54.58452, -5.69789) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
 Other (At-Grade)
Multilane (2 Lane, 2x2 max)
Ogden, UT
Weber Co.
United States 		Combe Rd. / Skyline Dr.
(41.15951, -111.92682) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
36.5760 		Other (At-Grade)
Single-Lane 		2017 Year Completed estimated (2016-2017).
Grove City, OH
Franklin Co.
United States 		Columbus St. / Beulah Way
(39.88747, -83.09512) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
39.6240 		Other (At-Grade)
Single-Lane 		2020 Year Completed estimated (2019-2020).
Lexington Park, MD
St. Mary's Co.
United States 		Columbus Dr. / Shining Willow Ln. / Creeping Primrose Ln.
(38.26133, -76.46983) 		Other
Existing 		Unknown
Unknown 		3 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane 		No splitter islands.
New York, NY
Manhattan Co.
United States 		Columbus Circle (7th Ave. / Broadway / Central Park West / Central Park South)
(40.76808, -73.98187) 		Signalized Roundabout/Circle
Existing 		Signal
None 		5 Approaches
0 Driveways
123.0168 		Other (At-Grade)
Multilane (3+ Lane) 		1905 ICD estimated from Google Maps linework.
Rudds Gully, WA
Greater Geraldton
Australia 		Columbus Blvd. / Venta St.
(-28.81908, 114.64168) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
 Other (At-Grade)
Single-Lane
New Britain, CT
Hartford Co.
United States 		Columbus Blvd. / Bank St.
(41.66804, -72.77988) 		Roundabout
Existing 		All-Way Yield
Unknown 		3 Approaches
0 Driveways
33.9026 		Other (At-Grade)
Single-Lane 		2018 Previous control: Yield sign ICD estimated from Google Maps linework.
Redland, MD
Montgomery Co.
United States 		Columbus Ave. / Gramercy Blvd.
(39.12362, -77.16494) 		Other
Existing 		All-Way Stop
Unknown 		3 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane
Chilliwack, BC
Fraser Valley
Canada 		Columbia Valley Rd. / Sunnyside Blvd. / (parking)
(49.07529, -121.97639) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
37.0000 		Other (At-Grade)
Single-Lane 		2010 Year Completed estimated (2009-2011).
Waterloo, ON
Waterloo
Canada 		Columbia St. W / Platinum Dr. / Ladyslipper Dr.
(43.44950, -80.58669) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
 Other (At-Grade)
Single-Lane 		2021 Year Completed estimated (2018-2021).
Waterloo, ON
Waterloo
Canada 		Columbia St. W / Bennington Gate / Chancery Ln.
(43.46485, -80.57403) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
45.0000 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		2018 Year Completed estimated (2016-2018).
Adams, MA
Berkshire Co.
United States 		Columbia St. (Rte 8) / Renfrew St. / Friend St.
(42.63704, -73.11300) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
30.7517 		Other (At-Grade)
Single-Lane 		2016 ICD estimated from Google Maps linework.
Boston, MA
Suffolk Co.
United States 		Columbia Rd. / William J. Day Blvd.
(42.32172, -71.05128) 		Rotary
Existing 		Unknown
Unknown 		4 Approaches
0 Driveways
69.7616 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		Functional Class: Arterial ICD estimated from Google Maps linework.
Medina, OH
Medina Co.
United States 		Columbia Rd. / Spieth Rd.
(41.18074, -81.92515) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
42.2481 		Other (At-Grade)
Single-Lane 		2015 ICD estimated from Google Maps linework.
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
Kennewick, WA
Benton Co.
United States 		Columbia Park Drive #2
(46.22223, -119.14630) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
54.5366 		Other (At-Grade)
Single-Lane 		2001 Completed February 2001 Functional Class: Local ICD estimated from Google Maps linework.
Kennewick, WA
Benton Co.
United States 		Columbia Park Drive #1
(46.22221, -119.15110) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
38.8367 		Other (At-Grade)
Single-Lane 		2001 Completed February 2001. Functional Class: Local ICD estimated from Google Maps linework.
Grand View North, UT
Utah Co.
United States 		Columbia Ln. / N 950 W / W 1700 N
(40.25684, -111.67551) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
27.3437 		Other (At-Grade)
Single-Lane 		2008 Year Completed estimated (2007-2009). ICD estimated from Google Maps linework.
Columbia, MO
Boone Co.
United States 		Columbia Gorge Pkwy. / (unknown)
(38.92607, -92.25845) 		Roundabout
Existing 		All-Way Yield
Unknown 		4 Approaches
0 Driveways
29.7324 		Other (At-Grade)
Single-Lane 		2007 ICD estimated from Google Maps linework.
West Columbia, SC
Lexington Co.
United States 		Columbia Circle (Lexington Dr. / Boston Ave.)
(33.94995, -81.11397) 		Rotary
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
90.1561 		Other (At-Grade)
Single-Lane 		Painted splitter islands on two legs. ICD estimated from Google Maps linework.
Dotsero, CO
Eagle Co.
United States 		Colorado River Rd. / US 6 / I-70 Frontage Rd. / I-70 WB On-Ramp
(39.64841, -107.06570) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
45.7200 		Freeway Ramps (Grade-Separated)
Single-Lane 		2013 Year Completed estimated (2011-2015).
Idaho Springs, CO
Clear Creek Co.
United States 		Colorado Blvd. / I-70 WB Ramps
(39.74195, -105.49607) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
42.6720 		Freeway Ramps (Grade-Separated)
Single-Lane 		2015
Frederick, CO
Weld Co.
United States 		Colorado Blvd. / 5th St.
(40.09868, -104.94236) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
54.8640 		Other (At-Grade)
Single-Lane 		2016 Striped out inside circulating lane and inside entry lanes on north and south legs, with evidence of vehicle paths traveling over striped circulatory roadway area. Year Completed estimated (2015-2017).
Grand Junction, CO
Mesa Co.
United States 		Colorado Ave. / S. 2nd St.
(39.06636, -108.56950) 		Roundabout
Existing 		Unknown
Unknown 		3 Approaches
0 Driveways
25.9643 		Other (At-Grade)
Single-Lane 		2002 ICD estimated from Google Maps linework.
Joint Base Lewis-McChord, WA
Pierce Co.
United States 		Colorado Ave. / Garcia Blvd.
(47.09688, -122.58387) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
41.4657 		Other (At-Grade)
Single-Lane 		2015 Open January 2015. ICD estimated from Google Maps linework.
Walnut, CA
Orange Co.
United States 		Colorado (St.)
(33.71340, -117.79113) 		Other
Existing 		Unknown
Unknown 		5 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Unknown 		Havard Square Park.
Cypress, TX
Harris Co.
United States 		Colony Shore Dr. / N Settlers Shore Dr. / Fullers Grant Ct.
(29.95341, -95.73319) 		Other
Existing 		All-Way Yield
Unknown 		3 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane 		No splitter islands.
Cypress, TX
Harris Co.
United States 		Colony Shore Dr. / E Colony Shore Dr. / S Colony Shore Dr.
(29.95433, -95.73393) 		Other
Existing 		All-Way Yield
Unknown 		3 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane 		No splitter islands.
Spring Grove Plantation, SC
Berkeley Co.
United States 		Colony Post Loop / Plantation Grove Blvd.
(33.07839, -80.01052) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
1 Driveways
42.6717 		Other (At-Grade)
Single-Lane 		2005
Moncks Corner, SC
Berkeley Co.
United States 		Colony Post Loop / Caretaker Trl.
(33.07825, -80.00718) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
42.6720 		Other (At-Grade)
Single-Lane 		2005
Williamsburg, VA
James City Co.
United States 		Colonial Heritage Blvd. / Harrington Commons / Chapel Xing
(37.34606, -76.77094) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
74.0590 		Other (At-Grade)
Single-Lane 		2005 ICD estimated from Google Maps linework.
Buffalo, NY
Erie Co.
United States 		Colonial Circle (Richmond Ave. / Lafayette Ave.)
(42.92026, -78.88171) 		Other
Existing 		Unknown
Unknown 		0 Approaches
0 Driveways
71.7180 		Other (At-Grade)
Unknown 		ICD estimated from Google Maps linework.
Colonial Place-Riverview, VA
Norfolk City
United States 		Colonial Circle
(36.88400, -76.28676) 		Other
Existing 		Unknown
Unknown 		4 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane
Orlando, FL
Orange Co.
United States 		Colonial Center Pkwy. / Parking lot access
(28.79184, -81.35422) 		Other
Existing 		Unknown
Unknown 		3 Approaches
0 Driveways
46.0539 		Other (At-Grade)
Single-Lane 		Part of retail shopping center/office park development. Series of three roundabouts. Functional Class: Local ICD estimated from Google Maps linework.
Roanoke, VA
Roanoke City Co.
United States 		Colonial Ave. SW / Winding Way Rd. SW
(37.24543, -79.97470) 		Roundabout
Existing 		All-Way Yield
Unknown 		3 Approaches
0 Driveways
19.9657 		Other (At-Grade)
Single-Lane 		2018 https://www.roanoke.com/news/local/roundabout-makeover-starts-tuesday-on-colonial-avenue-by-community-college/article_975d6b20-fc2e-50c5-95d0-680a8e9686ce.html ICD estimated from Google Maps linework.