Roundabouts Database Index

30012 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
Longview, TX Gregg Co. United States	Pals Pkwy / Cotton St. (E Harrison Rd.) (32.49576, -94.78002)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 38.1000	Other (At-Grade) Single-Lane	2008	Year Completed estimated (2005-2009).
Milton, ON Halton Canada	Campbellville Rd. / Campbell Ave. (43.49642, -79.97028)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 40.0000	Other (At-Grade) Single-Lane	2022	Year Completed estimated (2021-2022).
Cedar Rapids, IA Linn Co. United States	6th St. SW / (parking) (41.90137, -91.67614)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 45.7200	Other (At-Grade) Single-Lane	2022	Year Completed estimated (2021-2022).
Coralville, IA Johnson Co. United States	N Liberty Rd. NE / Forevergreen Rd. (41.72584, -91.57089)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane	2022	https://www.johnsoncountyiowa.gov/news/secondary-roads/2022-04-21/construction-north-liberty-and-forevergreen-roads-roundabout-begins
Poeldijk, South Holland Westland Netherlands	N211-E30 / Van Elswijkbaan / Paul Captijnlaan (52.03205, 4.22502)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways	Other (At-Grade) Single-Lane
Poeldijk, South Holland Westland Netherlands	Paul Captijnlaan / Verburghlaan / Arckelweg (52.02865, 4.23244)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways	Other (At-Grade) Single-Lane
Honselersdijk, South Holland Westland Netherlands	N213 / Bosweg / Boswoning (52.00587, 4.21178)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways	Other (At-Grade) Multilane (2 Lane, 2x2 max)		Turbo-roundabout.
Naaldwijk, South Holland Westland Netherlands	Grote Woerdlaan / Bosweg (52.00298, 4.20665)	Roundabout Existing	All-Way Yield Unknown	3 Approaches 0 Driveways	Other (At-Grade) Single-Lane
Naaldwijk, South Holland Westland Netherlands	Oude Woerdlaan / Schiereiland / (parking) (52.00153, 4.20701)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways	Other (At-Grade) Single-Lane
Naaldwijk, South Holland Westland Netherlands	Verspycklaan / Grote Woerdlaan (51.99810, 4.21039)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways	Other (At-Grade) Single-Lane
Naaldwijk, South Holland Westland Netherlands	Van der Doortogestraat / Verdilaan / Kleine Woerdlaan (51.99657, 4.20736)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways	Other (At-Grade) Single-Lane
Naaldwijk, South Holland Westland Netherlands	Middel Broekweg / Pijle Tuinenweg / Laan van de Glazen Stad (51.99116, 4.21814)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways	Other (At-Grade) Single-Lane
Naaldwijk, South Holland Westland Netherlands	Kruisbroekweg / Secretaris Verhoeffweg / Zuidweg (51.98881, 4.20662)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways	Other (At-Grade) Single-Lane
Naaldwijk, South Holland Westland Netherlands	N467 (Galgeweg) / Kruisbroekweg / Vierschaar (51.98757, 4.19986)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways	Other (At-Grade) Single-Lane
s-Gravenzande, South Holland Westland Netherlands	N467 (Naaldwijkseweg) / Dijckerwaal / Heenweg (51.98856, 4.18439)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways	Other (At-Grade) Single-Lane
s-Gravenzande, South Holland Westland Netherlands	N467 (Naaldwijkseweg) / Koningin Julianweg / Naaldwijkseweg (51.99220, 4.16858)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways	Other (At-Grade) Single-Lane
s-Gravenzande, South Holland Westland Netherlands	N220-E25 (Maasdijk) / N467 (51.98732, 4.16297)	Roundabout Existing	All-Way Yield Unknown	3 Approaches 0 Driveways	Other (At-Grade) Single-Lane
s-Gravenzande, South Holland Westland Netherlands	N220-E25 (Maasdijk) / Laan van de Heilige Lambertus (51.97808, 4.18599)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways	Other (At-Grade) Single-Lane
Maasdijk, South Holland Westland Netherlands	Honderdlaan / Blauwhek (51.96816, 4.21143)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways	Other (At-Grade) Single-Lane
Fort Wayne, IN Allen Co. United States	Union Chapel Rd. / Parkview Plaza (41.20002, -85.10064)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 54.8640	Other (At-Grade) Multilane (2 Lane, 2x1 max)	2022	https://www.fwbusiness.com/fwbusiness/article_f4f95c16-cf7f-5063-b7fa-31833acc622f.html
Grand Island, NE Hall Co. United States	W Old Potash Hwy. / Claude Rd. (40.91712, -98.38794)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane	2021	https://www.facebook.com/garysautoinc/videos/the-roundabout-at-claude-road-and-old-potash-is-getting-closer-but-stilltake-a-l/1828703987312477/
Annemasse, Auvergne-Rhône-Alpes Haute-Savoie France	D2 / D46 (46.18647, 6.22208)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways	Other (At-Grade) Single-Lane
Gaillard, Auvergne-Rhône-Alpes Haute-Savoie France	D46 / Rue de l'Industrie (46.18230, 6.21508)	Roundabout Existing	All-Way Yield Unknown	3 Approaches 0 Driveways	Other (At-Grade) Single-Lane
Gaillard, Auvergne-Rhône-Alpes Haute-Savoie France	D149 (Rue des Vignes-Rue du Chateau d'Eau) / Rue de l'Industrie / Cours de la Republique (46.18381, 6.21124)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 1 Driveways	Other (At-Grade) Single-Lane
Gaillard, Auvergne-Rhône-Alpes Haute-Savoie France	D149 (Rue du Château d'Eau - Rue du Martinet) / Rue de la Paix / Rue du Crest de Vaulx (46.18259, 6.20564)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways	Other (At-Grade) Single-Lane
Gaillard, Auvergne-Rhône-Alpes Haute-Savoie France	D149 / Rue du Lieutenant Yvan Genot (46.18354, 6.19539)	Roundabout Existing	All-Way Yield Unknown	3 Approaches 0 Driveways 25.0000	Other (At-Grade) Single-Lane		On France-Switzerland border.
Thônex, Geneva Geneva Switzerland	Avenue de Thonex / Chemin des Cyprès (46.18648, 6.19655)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways	Other (At-Grade) Single-Lane
Gaillard, Auvergne-Rhône-Alpes Haute-Savoie France	Rue René Cassin / Rue René Cassin / (parking) (46.17990, 6.21525)	Roundabout Existing	All-Way Yield Unknown	3 Approaches 1 Driveways	Other (At-Grade) Single-Lane
Vétraz-Monthoux, Auvergne-Rhône-Alpes Haute-Savoie France	D1206 / Chemin des Trois Noyers / Chemin de la Loex (46.17940, 6.24488)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways	Other (At-Grade) Multilane (2 Lane, 2x1 max)		Reduced from 2x2 to 2x1 in 2016-2018.
Annemasse, Auvergne-Rhône-Alpes Haute-Savoie France	Place du Maréchal de Lattre de Tassigny: D1206 / Avenue du Léman (46.18267, 6.24620)	Roundabout Existing	All-Way Yield Unknown	3 Approaches 2 Driveways	Other (At-Grade) Single-Lane		Transit center has direct access to and from circulatory roadway.
Kuching, Sarawak Bahagian Kuching Malaysia	Lorong Cahya Mata / (unknown) (1.64234, 110.33686)	Roundabout Existing	All-Way Yield Unknown	3 Approaches 1 Driveways	Other (At-Grade) Single-Lane
Kuching, Sarawak Bahagian Kuching Malaysia	(unknown) (1.64450, 110.33504)	Roundabout Existing	All-Way Yield Unknown	3 Approaches 0 Driveways	Other (At-Grade) Single-Lane
Kuching, Sarawak Bahagian Kuching Malaysia	(unknown) (1.64720, 110.33526)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways	Other (At-Grade) Single-Lane
Timnath, CO Larimer Co. United States	Club Dr. / Innovate Pl. (40.52134, -104.95463)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 53.3400	Other (At-Grade) Multilane (2 Lane, 2x2 max)	2008	Year Completed estimated (2006-2010).
Timnath, CO Larimer Co. United States	Signal Tree Dr. / Timinath Trail Rd. (40.52143, -104.97703)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 39.6240	Other (At-Grade) Single-Lane	2015	Year Completed estimated (2014-2015).
Timnath, CO Larimer Co. United States	Signal Tree Dr. / Stone Fly Dr. (40.51928, -104.97637)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 39.6240	Other (At-Grade) Single-Lane	2019	South leg stubbed. Year Completed estimated (2017-2019).
Windsor, CO Weld Co. United States	CO 257 / Pointe Plaza Dr. (40.47823, -104.88905)	Roundabout Existing	All-Way Yield At-grade Rail Crossing Signals/Gates (controlling approach only)	4 Approaches 0 Driveways 45.7200	Other (At-Grade) Single-Lane	2019	At-grade rail crossing located 370 feet to south. Year Completed estimated (2018-2019).
Windsor, CO Larimer Co. United States	Crystal Downs Dr. / Vernazza Way (40.45625, -104.97811)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 33.5280	Other (At-Grade) Single-Lane	2017	Year Completed estimated (2016-2017).
Berthoud, CO Weld Co. United States	CO 56 / I-25 SB Ramps (40.30636, -104.98169)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 0.0000	Freeway Ramps (Grade-Separated) Multilane (2 Lane, 2x1 max)	2021	https://www.codot.gov/news/2021/november-2021/co56-i25-reopens-early
Berthoud, CO Weld Co. United States	CO 56 / I-25 NB Ramps (40.30632, -104.97848)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 0.0000	Freeway Ramps (Grade-Separated) Multilane (2 Lane, 2x2 max)	2021	https://www.codot.gov/news/2021/november-2021/co56-i25-reopens-early
Middleton, ID Canyon Co. United States	Middleton Rd. / E Sawtooth Lake Dr. (43.69887, -116.61324)	Roundabout Unknown	All-Way Yield None	3 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane	2023	Scheduled for completion August 2023.
Middleton, ID Canyon Co. United States	N Middleton Rd. / E Main St. (Cornell St.) (43.70651, -116.61307)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 21.3360	Other (At-Grade) Single-lane w/ Traversable Central Island	2021
Ranson, WV Jefferson Co. United States	N Fairfax Blvd. / E 13th Ave. (39.30680, -77.85569)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 54.8640	Other (At-Grade) Single-Lane	2019	Peanut shaped. ICD = 180 ft on each end; 530 ft long. Year Completed estimated (2017-2020). This condition is locally known as the "Peanut" and constructed within the historic plat of the city where an oval park was visioned. The peanut shape will support additional approaches as further development occurs. https://www.cityofransonwv.net/149/Fairfax-Boulevard https://www.cityofransonwv.net/DocumentCenter/View/1219/Fairfax-Blvd-Extension---Engineering-Peanut?bidId=
Norman, OK Cleveland Co. United States	Corporate Centre Dr. (35.25673, -97.48459)	Roundabout Existing	All-Way Yield None	2 Approaches 0 Driveways 45.7200	Other (At-Grade) Single-Lane	2015	Year Completed estimated (2014-2015).
Rio, FL Martin Co. United States	SR 707 (NE Dixie Hwy.) / NE Martin Ave. (27.21959, -80.23709)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 30.4800	Other (At-Grade) Single-Lane	2010	Roundabout constructed by the Martin County CRA in coordination with the Rio 707 streetscape project.
Jensen Beach, FL Martin Co. United States	SR 707 (NE Dixie Hwy.) / NE Palmer St. / NE Langford Ln. (27.22321, -80.22038)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 35.0520	Other (At-Grade) Single-Lane	2018	Replaced triangular intersection.
Jensen Beach, FL Martin Co. United States	NE Savannah Rd. / NE Pinelake Village Blvd. / NE Collins Cir. (27.23035, -80.23639)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 33.5280	Other (At-Grade) Single-Lane	2008	Oval shaped. ICD = 110 ft x 95 ft. Crosswalks adjacent to circulatory roadway. Year Completed estimated (2007-2008).
Stuart, FL Martin Co. United States	NW Green River Pkwy. / NE Baker Rd. (27.22209, -80.25291)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 30.4800	Other (At-Grade) Single-Lane	2010	Year Completed estimated (2009-2010). North leg realigned from west; south leg added.
Bakersfield, CA Kern Co. United States	Wings Way / Citation Way (35.43966, -119.05212)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 54.8640	Other (At-Grade) Multilane (2 Lane, 2x2 max)	2019	Marked with double left turns but only one receiving exit lane. Year Completed estimated (2018-2020).
Bakersfield, CA Kern Co. United States	Highgate Park Blvd. / Pemberley Passage Ave. (35.33797, -119.16322)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 39.6240	Other (At-Grade) Single-Lane	2017	Year Completed estimated (2017-2018).
Bakersfield, CA Kern Co. United States	Pemberley Passage Ave. / Hovington Ave. (35.33823, -119.15104)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 39.6240	Other (At-Grade) Single-Lane	2016	Year Completed estimated (2015-2016).
Bakersfield, CA Kern Co. United States	Windermere St. / Muirlands Pkwy. / Brentmoor Cir. (35.31845, -119.13707)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 42.6720	Other (At-Grade) Single-Lane	2019	Year Completed estimated (2018-2020).
Fresno, CA Fresno Co. United States	E Fancher Creek Dr. / N Armstrong Ave. (36.74138, -119.67865)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 36.5760	Other (At-Grade) Single-Lane	2020
Fresno, CA Fresno Co. United States	N Alicante Dr. / Crest View Dr. (36.90734, -119.74334)	Roundabout Existing	All-Way Yield None	3 Approaches 2 Driveways 39.6240	Other (At-Grade) Single-Lane	2017	Year Completed estimated (2017-2018).
Merced, CA Merced Co. United States	E Yosemite Ave. / Campus Pkwy. (37.33240, -120.42433)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 54.8640	Other (At-Grade) Multilane (2 Lane, 2x2 max)	2022	Year Completed estimated (2021-2022).
Merced, CA Merced Co. United States	Pacific Dr. / El Redondo Dr. (37.33543, -120.49525)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 41.1480	Other (At-Grade) Single-Lane	2004	Year Completed estimated (2004-2005).
Merced, CA Merced Co. United States	Pacific Dr. / Horizons Ave. (37.33557, -120.48947)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 57.9120	Other (At-Grade) Single-Lane	2005	Year Completed estimated (2004-2005).
Merced, CA Merced Co. United States	El Redondo Dr. / Lehigh Dr. (37.33927, -120.49535)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 41.1480	Other (At-Grade) Single-Lane	2006
Turlock, CA Stanislaus Co. United States	N Berkeley Ave. / Dancer Way (37.53472, -120.83029)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 41.1480	Other (At-Grade) Single-Lane	2006	2007 or earlier (SV)
Turlock, CA Stanislaus Co. United States	N Berkeley Ave. / E Springer Dr. (37.53121, -120.83042)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 41.1480	Other (At-Grade) Single-Lane	2006
Turlock, CA Stanislaus Co. United States	N Berkeley Ave. / Chandler Dr. (37.52638, -120.83061)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 41.1480	Other (At-Grade) Single-Lane	2006
Ceres, CA Stanislaus Co. United States	El Camino Ave. / Park St. / Pine St. (37.58840, -120.95189)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 33.5280	Other (At-Grade) Single-Lane	2021	Striped out shoulders on outside of each entry lane. https://www.cerescourier.com/news/local/pine-street-roundabout-work-starts/
Modesto, CA Stanislaus Co. United States	Student Center Dr. / 6th St. (37.66402, -121.03414)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 41.1480	Other (At-Grade) Single-Lane	2017	Y-shaped intersection. Bike lane striped in circulatory roadway. 28181.
Modesto, CA Stanislaus Co. United States	6th St. / B St. (37.66152, -121.03413)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 35.0520	Other (At-Grade) Single-Lane	2017	On campus of Modesto Junior College West Campus. Bike lanes striped within circulatory roadway. Year Completed estimated (2016-2017).
Modesto, CA Stanislaus Co. United States	4th St. / E St. (37.66411, -121.03798)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 32.0040	Other (At-Grade) Single-Lane	2017	On campus of Modesto Junior College West Campus. Bike lanes striped in circulatory roadway. Painted splitter island on south leg. Year Completed estimated (2016-2017).
Modesto, CA Stanislaus Co. United States	Hillglen Ave. / Sorrel Wood Dr. (37.68533, -120.95336)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 27.4320	Other (At-Grade) Single-Lane	2010
Modesto, CA Stanislaus Co. United States	Kodiak Dr. / Lincoln Oak Dr. (37.68164, -120.94799)	Roundabout Existing	All-Way Yield None	3 Approaches 1 Driveways 27.4320	Other (At-Grade) Single-Lane	2015	Year Completed estimated (2015-2016).
Manteca, CA San Joaquin Co. United States	E Woodward Ave. / Shoreline Dr. / McKinley Ave. (37.77547, -121.27071)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 36.5760	Other (At-Grade) Single-Lane	2021	No splitter island on north leg (rural). Year Completed estimated (2021-2022).
Manteca, CA San Joaquin Co. United States	Galleria Dr. / Diablo View Dr. (37.77254, -121.26299)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 36.5760	Other (At-Grade) Single-Lane	2019	Year Completed estimated (2018-2020).
Stockton, CA San Joaquin Co. United States	E Swain Rd. / Montauban Ave. (38.01248, -121.29015)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 35.0520	Other (At-Grade) Single-Lane	2017	Year Completed estimated (2016-2017).
Stockton, CA San Joaquin Co. United States	Montauban Ave. / Hammertown Dr. (38.01652, -121.28893)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 27.4320	Other (At-Grade) Single-Lane	2022
Stockton, CA San Joaquin Co. United States	Buddy Holly Dr. / Nash Dr. (38.04691, -121.27337)	Roundabout Existing	All-Way Yield None	3 Approaches 1 Driveways 30.4800	Other (At-Grade) Single-Lane	2021	Year Completed estimated (2020-2021).
Stockton, CA San Joaquin Co. United States	Ocean Mist Way / A G Spanos Blvd. (38.05497, -121.34964)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 30.4800	Other (At-Grade) Single-Lane	2006
Stockton, CA San Joaquin Co. United States	Breaker Way / Sand Castle Way (38.05649, -121.34750)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 30.4800	Other (At-Grade) Single-Lane	2006
Stockton, CA San Joaquin Co. United States	Swainsons Hawk St. / Lands End Dr. (38.05429, -121.34275)	Roundabout Existing	All-Way Yield None	3 Approaches 2 Driveways 30.4800	Other (At-Grade) Single-Lane	2006
Bend, OR Deschutes Co. United States	SE 15th St. / SE Caldera Dr. (44.01354, -121.28410)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 42.6720	Other (At-Grade) Single-Lane	2021	https://ktvz.com/news/bend/2021/08/06/city-of-bend-road-and-traffic-report-week-of-august-9-15/
Meridian, ID Ada Co. United States	S Eagle Rd. / E Zaldia Dr. / E Zaldia St. (43.56661, -116.35440)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 45.7200	Other (At-Grade) Multilane (2 Lane, 2x1 max)	2021	Year Completed estimated (2021-2022).
Meridian, ID Ada Co. United States	E Wrightwood Dr. / S Luminous Ave. / E Crest Ridge Dr. (43.56552, -116.37989)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 39.6240	Other (At-Grade) Single-Lane	2014	Year Completed estimated (2013-2014).
Chubbuck, ID Bannock Co. United States	Mesquite Dr. / Parklawn Dr. / (parking) (42.92905, -112.46794)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 35.0520	Other (At-Grade) Single-Lane	2008	Year Completed estimated (2006-2009).
Post Falls, ID Kootenai Co. United States	E Hope Ave. / N Damascus Rd. (47.73751, -116.88406)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 38.1000	Other (At-Grade) Single-Lane	2019	North leg stubbed. Year Completed estimated (2018-2020).
Post Falls, ID Kootenai Co. United States	E Poleline Ave. / N Cecil Rd. (47.73044, -116.90517)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane	2022	https://www.postfalls.gov/poleline-cecil-project/
Missoula, MT Missoula Co. United States	Southgate Mall Access Rd. / Mary Ave. (46.84412, -114.02685)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 24.3840	Other (At-Grade) Single-Lane	2018	Year Completed estimated (2016-2019).
Missoula, MT Missoula Co. United States	Mary Ave. / Southgate Mall Access Rd. (46.84420, -114.03158)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 30.4800	Other (At-Grade) Single-Lane	2018	Year Completed estimated (2016-2019).
Longmont, CO Boulder Co. United States	Sundance Dr. / Galapagos Pl. (40.20011, -105.06468)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 30.4800	Other (At-Grade) Single-Lane	2016	Year Completed estimated (2016-2017).
Longmont, CO Boulder Co. United States	Sundance Dr. / Tyrrhenian Dr. (40.20202, -105.06468)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 30.4800	Other (At-Grade) Single-Lane	2016	Year Completed estimated (2016-2017).
Longmont, CO Boulder Co. United States	Sundance Dr. / Tyrrhenian Cir. (40.19784, -105.06451)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 30.4800	Other (At-Grade) Single-Lane	2016	Year Completed estimated (2016-2017).
Longmont, CO Boulder Co. United States	Sundance Dr. / Twilight Dr. (40.19529, -105.06175)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 30.4800	Other (At-Grade) Single-Lane	2016	Initial construction without splitter islands 1999-2002. Splitter islands added 2016-2017.
Longmont, CO Boulder Co. United States	S Martin St. / Bountiful Ave. (40.14740, -105.08831)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 30.4800	Other (At-Grade) Single-Lane	2017
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).
Frederick, CO Weld Co. United States	Aggregate Blvd. / Wyndham Hill Pkwy. (40.09242, -104.99890)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 54.8640	Other (At-Grade) Single-Lane	2006	Right-turn-only lanes on north and south legs. Striped out portions of circulatory roadway.
Erie, CO Boulder Co. United States	Jasper Rd. / Lombard St. (40.05485, -105.06504)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 33.5280	Other (At-Grade) Single-Lane	2021	Year Completed estimated (2020-2021).
Broomfield, CO Broomfield Co. United States	W 169th Ave. / Palisade Pkwy. (40.00437, -104.99443)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 42.6720	Other (At-Grade) Single-Lane	2014
Lafayette, CO Boulder Co. United States	Roser Dr. / Crater Lake Ln. / Murphy Creek Dr. (39.99879, -105.13387)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 36.5760	Other (At-Grade) Single-Lane	2009	Year Completed estimated (2008-2010).
Louisville, CO Boulder Co. United States	Roser Dr. / W Hecla Dr. / Paschal Dr. (39.99411, -105.13074)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 33.5280	Other (At-Grade) Single-Lane	2011
Louisville, CO Boulder Co. United States	E Hecla Dr. / Snowberry Ln. (39.99167, -105.12415)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 30.4800	Other (At-Grade) Single-Lane	2008	Year Completed estimated (2007-2008).
Louisville, CO Boulder Co. United States	E Hecla Dr. / Golden Eagle Way / Rose Ct. (39.99337, -105.12375)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 30.4800	Other (At-Grade) Single-Lane	2008	Year Completed estimated (2007-2008).
Thornton, CO Adams Co. United States	E 162nd Ave. / Grant St. / (parking) (39.98980, -104.98308)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 48.7680	Other (At-Grade) Single-Lane	2007
Thornton, CO Adams Co. United States	E 163rd Ave. / Elizabeth St. (39.99121, -104.95523)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 33.5280	Other (At-Grade) Single-Lane	2017	Year Completed estimated (2017-2018).
Brighton, CO Adams Co. United States	Longs Peak St. / N 46th Ave. (39.99462, -104.75972)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 33.5280	Other (At-Grade) Single-Lane	2021
Brighton, CO Adams Co. United States	Longs Peak St. / Silo Ct. (39.99463, -104.75777)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 33.5280	Other (At-Grade) Single-Lane	2022	Year Completed estimated (2021-2022).