Roundabouts Database Index

29411 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
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).
Denver, CO Denver Co. United States	Denver City Park (39.74743, -104.94152)	Other Existing	Unknown Unknown	3 Approaches 0 Driveways 0.0000	Other (At-Grade) Unknown
Windsor, CO Weld Co. United States	CR 62 / Covered Bridge Pkwy. (40.43593, -104.93456)	Roundabout Existing	All-Way Yield Unknown	3 Approaches 0 Driveways 57.9120	Other (At-Grade) Multilane (2 Lane, unspecified)	2018
Thornton, CO Adams Co. United States	E 145th Ave. / Fairfax Dr. (39.95991, -104.92845)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 33.5280	Other (At-Grade) Single-Lane	2019	Year Completed estimated (2018-2019).
Thornton, CO Adams Co. United States	E 141st Ave. / Forest St. (39.95341, -104.92769)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 32.0040	Other (At-Grade) Single-Lane	2017	Year Completed estimated (2015-2017).
Thornton, CO Adams Co. United States	E 138th Ave. / Jersey St. (39.94800, -104.91939)	Other Existing	Unknown Unknown	3 Approaches 0 Driveways 0.0000	Other (At-Grade) Unknown
Thornton, CO Adams Co. United States	Holly Cir. / Jasmine St. (39.92580, -104.91863)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 38.1000	Other (At-Grade) Single-Lane	2005	Year Completed estimated (2004-2005).
Castle Pines, CO Douglas Co. United States	Daniels Gate Dr. / Grigs Rd. (39.48770, -104.91860)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 37.7912	Other (At-Grade) Single-Lane	2001	Year Completed estimated (1999-2002). ICD estimated from Google Maps linework.
Thornton, CO Adams Co. United States	E 138th Ave. / Lilac St. (39.94771, -104.91419)	Other Existing	Unknown Unknown	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Unknown
Castle Pines, CO Douglas Co. United States	W Castle Pines Pkwy. / Pine Ridge Ln. / Buffalo Trl. (39.47283, -104.91386)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 30.4238	Other (At-Grade) Single-Lane	2009	Year Completed estimated (2008-2010). ICD estimated from Google Maps linework.
Greenwood Village, CO Arapahoe Co. United States	S. Monaco St. / E. Dorado Ave. (39.61319, -104.91350)	Traffic Calming Circle Existing	Unknown Unknown	4 Approaches 0 Driveways 9.2007	Other (At-Grade) Single-Lane	1999	ICD estimated from Google Maps linework.
Greenwood Village, CO Arapahoe Co. United States	S. Monaco St. / E. Dorado Pl. (39.61199, -104.91350)	Traffic Calming Circle Existing	Unknown Unknown	3 Approaches 0 Driveways 11.0410	Other (At-Grade) Single-Lane	1999	ICD estimated from Google Maps linework.
Greenwood Village, CO Arapahoe Co. United States	S. Monaco St. / E. Ida Ave. (39.61082, -104.91350)	Traffic Calming Circle Existing	Unknown Unknown	4 Approaches 0 Driveways 14.7216	Other (At-Grade) Single-Lane	1999	ICD estimated from Google Maps linework.
Greenwood Village, CO Arapahoe Co. United States	S. Monaco St. / E. Powers Ave. (39.61501, -104.91350)	Traffic Calming Circle Existing	Unknown Unknown	4 Approaches 0 Driveways 9.2005	Other (At-Grade) Single-Lane	1999	ICD estimated from Google Maps linework.
Greenwood Village, CO Arapahoe Co. United States	S. Monaco St. / E. Prentice Pl. (39.61977, -104.91350)	Traffic Calming Circle Existing	Unknown Unknown	3 Approaches 0 Driveways 14.7197	Other (At-Grade) Single-Lane	1999	ICD estimated from Google Maps linework.
Greenwood Village, CO Arapahoe Co. United States	S. Monaco St. / E. Berry Ave. (39.61682, -104.91340)	Traffic Calming Circle Existing	Unknown Unknown	3 Approaches 0 Driveways 11.9603	Other (At-Grade) Single-Lane	1999	ICD estimated from Google Maps linework.
Windsor, CO Weld Co. United States	7th St. (CR 17) / New Liberty Rd. (40.45096, -104.91256)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 30.9005	Other (At-Grade) Single-Lane	2019	https://www.windsorgov.com/CivicAlerts.aspx?AID=1016 ICD estimated from Google Maps linework.
Windsor, CO Weld Co. United States	New Liberty Rd. / (future road) (40.45101, -104.91123)	Roundabout Existing	All-Way Yield Unknown	3 Approaches 0 Driveways 43.6242	Other (At-Grade) Multilane (2 Lane, unspecified)	2005	ICD estimated from Google Maps linework.
Windsor, CO Weld Co. United States	Eastman Park Dr. / 7th St. (40.46536, -104.90772)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 33.6198	Other (At-Grade) Single-Lane	2016	ICD estimated from Google Maps linework.
Thornton, CO Adams Co. United States	131st Ave. / Oneida St. (39.93268, -104.90764)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 38.1000	Other (At-Grade) Single-Lane	2005	Year Completed estimated (2004-2005).
Johnstown, CO Weld Co. United States	CR 17 / CR 54 (40.37782, -104.90748)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane	2021	https://www.facebook.com/WeldCountyGovernment/photos/congratulations-to-the-weld-county-department-of-public-worksweld-countys-first-/1884120768409090
Larkspur, CO Douglas Co. United States	Bear Dance Dr. / Sky View Ln. / Elk View Rd. / Lake Dr. (39.27054, -104.90711)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 31.4367	Other (At-Grade) Single-Lane	2003	Year Completed estimated (2002-2004). ICD estimated from Google Maps linework.
Windsor, CO Weld Co. United States	E Cross Roads Blvd. / 7th St. / (unknown) (40.43692, -104.90540)	Roundabout Existing	All-Way Yield None	5 Approaches 0 Driveways 58.1778	Other (At-Grade) Multilane (2 Lane, unspecified)	2008	Year Completed estimated (2006-2009). ICD estimated from Google Maps linework.
Windsor, CO Weld Co. United States	New Liberty Rd. / Marina Dr. (40.44626, -104.90330)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 49.9896	Other (At-Grade) Multilane (2 Lane, unspecified)	2006	ICD estimated from Google Maps linework.
Henderson, CO Adams Co. United States	E 96th Ave. / I-76 WB Ramps / Brighton Rd. / I-76 Service Rd. (39.87079, -104.90301)	Roundabout Existing	All-Way Yield None	5 Approaches 0 Driveways 65.0813	Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified)	2009	Year Completed estimated (2008-2010). ICD estimated from Google Maps linework.
Windsor, CO Weld Co. United States	Eastman Park Dr. / 3rd St. (40.46570, -104.90190)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 37.2542	Other (At-Grade) Single-Lane	2011	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.
Thornton, CO Adams Co. United States	E 122nd Ave. / Roslyn St. (39.91776, -104.90064)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 41.1480	Other (At-Grade) Single-Lane	2006	Year Completed estimated (2005-2006).
Henderson, CO Adams Co. United States	E 96th Ave. / I-76 NB Ramps / Brighton Rd. / I-76 Frontage Rd. (39.87074, -104.90024)	Roundabout Existing	All-Way Yield Unknown	5 Approaches 0 Driveways 68.7479	Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified)	2009	Year Completed estimated (2008-2010). ICD estimated from Google Maps linework.
Brighton, CO Adams Co. United States	156th Ave. / 157th Ave. / Syracuse Way (39.97989, -104.89921)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 38.1000	Other (At-Grade) Single-Lane	2018	Year Completed estimated (2018-2019).
Denver, CO Adams Co. United States	Syracuse St. / Rosalyn St. / 32nd Ave. Pkwy. (39.76177, -104.89890)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 32.1333	Other (At-Grade) Single-Lane	2006	ICD estimated from Google Maps linework.
Thornton, CO Adams Co. United States	Tamarac St. / E 129th Ave. / Tamarac Way (39.93026, -104.89660)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 38.1000	Other (At-Grade) Single-Lane	2005	Year Completed estimated (2004-2005).
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.
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
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.
Windsor, CO Weld Co. United States	Eastman Park Dr. / Water Valley Pkwy. / Cornerstone Dr. (40.46521, -104.89186)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 35.4372	Other (At-Grade) Single-Lane	2015	Year Completed estimated (2014-2016). ICD estimated from Google Maps linework.
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	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	Fairmount Dr. / S Valentia St. (39.70575, -104.89029)	Roundabout Existing	All-Way Yield None	3 Approaches 1 Driveways 36.5760	Other (At-Grade) Single-Lane	2001	Year Completed estimated (1999-2002).
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).
Denver, CO Adams Co. United States	Willow St. / E. 21st Ave. (39.74838, -104.88819)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 31.2212	Other (At-Grade) Single-Lane	2005	ICD estimated from Google Maps linework.
Denver, CO Adams Co. United States	Xanthia St. / Xanthia Way / E. 24th Ave. (39.75166, -104.88760)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 27.5468	Other (At-Grade) Single-Lane	2004	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.
(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.
Castle Highlands, CO Douglas Co. United States	Wolfensberger Rd. / Plum Creek Pkwy. / Coachline Rd. (39.37564, -104.88568)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 51.8160	Other (At-Grade) Multilane (2 Lane, 2x2 max)	2018	Year Completed estimated (2017-2019).
Denver, CO Arapahoe Co. United States	S Yosemite St. / E Wesley Dr. (39.67305, -104.88513)	Other Existing	Unknown Unknown	3 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane		No splitter islands.
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.
(unincorporated), CO Douglas Co. United States	Ridgegate Pkwy. / Ridgegate Cir. / Commons St. (39.53187, -104.88300)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 53.4267	Other (At-Grade) Multilane (2 Lane, unspecified)	2006	Part of transit-oriented development near future light-rail station ICD estimated from Google Maps linework.
Castle Pines, CO Douglas Co. United States	Lagae Rd. / Hyland Hills Rd. (39.46753, -104.88126)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 41.4902	Other (At-Grade) Multilane (2 Lane, unspecified)	2018	ICD estimated from Google Maps linework.
Castle Pines, CO Douglas Co. United States	Lagae Rd. / Monarch Blvd. (39.46134, -104.87935)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 36.8834	Other (At-Grade) Multilane (2 Lane, unspecified)	2018	ICD estimated from Google Maps linework.
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.
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 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.
Cheyenne, WY Laramie Co. United States	High Plains Rd. / I-25 SB Ramps (41.06202, -104.87730)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 50.4293	Freeway Ramps (Grade-Separated) Single-Lane	2010	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).
Cheyenne, WY Laramie Co. United States	High Plains Rd. / I-25 NB Ramps (41.06046, -104.87620)	Roundabout Existing	All-Way Yield None	5 Approaches 0 Driveways 55.8337	Freeway Ramps (Grade-Separated) Single-Lane	2010	Only 3 of the 5 approaches are currently in service. One is under construction for the new Southeast Wyoming Welcome Center. The last is a future extension of High Plains to the east. ICD estimated from Google Maps linework.
Aurora, CO Denver Co. United States	Yosemite Way. / First Ave. / Dayton St. (39.71878, -104.87592)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 49.6079	Other (At-Grade) Multilane (2 Lane, unspecified)	2008	ICD estimated from Google Maps linework.
Henderson, CO Adams Co. United States	Henderson Rd. / E 124th Ave. / Park Blvd. (39.92505, -104.87550)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 45.7200	Other (At-Grade) Single-Lane	2022	Merging right-turn bypass lanes on north and east legs. https://adcogov.org/henderson-rd-park-blvd-roundabout-project
(unincorporated), CO Douglas Co. United States	Ridgegate Pkwy. / Ridgegate Cir. / Park Meadows Blvd. (39.52945, -104.87450)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 54.3498	Other (At-Grade) Multilane (2 Lane, unspecified)	2006	Part of transit-oriented development near future light-rail station ICD estimated from Google Maps linework.
Colorado Springs, CO El Paso Co. United States	N 30th St. / Gateway Rd. (38.87780, -104.87071)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 45.7200	Other (At-Grade) Single-Lane	2023	https://coloradosprings.gov/project/30th-street-corridor-project
Inverness, CO Arapahoe Co. United States	Inverness Main St. / Inverness Blvd. (39.57922, -104.87057)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 41.1480	Other (At-Grade) Single-Lane	2006
Inverness, CO Arapahoe Co. United States	Inverness Terr. / Inverness Blvd. (39.57729, -104.87052)	Roundabout Existing	All-Way Yield None	3 Approaches 1 Driveways 39.6240	Other (At-Grade) Single-Lane	2007
Colorado Springs, CO El Paso Co. United States	Mesa Rd. / Kissing Camels Dr. (38.87808, -104.86580)	Roundabout Existing	Unknown Unknown	4 Approaches 0 Driveways 29.7525	Other (At-Grade) Single-Lane	2001	ICD estimated from Google Maps linework.
Colorado Springs, CO El Paso Co. United States	Treeline View / Stately View (38.87351, -104.86560)	Roundabout Existing	Unknown Unknown	3 Approaches 0 Driveways 38.1228	Other (At-Grade) Single-Lane	2003	ICD estimated from Google Maps linework.
Castle Rock, CO Douglas Co. United States	Crystal Valley Pkwy. / Plum Creek Blvd. (39.33642, -104.86553)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Multilane (2 Lane, 2x2 max)	2024	https://m.facebook.com/story.php?id=100064394515704&story_fbid=2014182452315413
Castle Rock, CO Douglas Co. United States	S Wilcox St. / South St. (39.36917, -104.86011)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane	2021	http://crgov.com/3296/Wilcox-and-South-Roundabout
Parker, CO Douglas Co. United States	Cross Canyon Trl. / Canyon Forge Dr. (39.47008, -104.85988)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 51.8160	Other (At-Grade) Single-Lane	2018	Year Completed estimated (2018-2019).
Monument, CO El Paso Co. United States	Woodcarver Rd. / Baptist Rd. (39.05651, -104.85853)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 54.8640	Other (At-Grade) Single-Lane	2016	Year Completed estimated (2015-2016).
Greeley, CO Weld Co. United States	W 18th St. / Promontory Cir. / (parking) (40.41203, -104.85840)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 42.6720	Other (At-Grade) Multilane (2 Lane, 2x2 max)	2004	Part of 6 in vicinity.
Greeley, CO Weld Co. United States	Promontory Cir. / W 16th St. / (parking) (40.41524, -104.85540)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 42.6720	Other (At-Grade) Multilane (2 Lane, 2x2 max)	2004	Part of 6 in vicinity.
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.
Castle Pines, CO Douglas Co. United States	Westbridge Dr. / Cross Canyon Trl. (39.45951, -104.85287)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 50.2920	Other (At-Grade) Single-Lane	2019	Year Completed estimated (2018-2019).
Colorado Springs, CO El Paso Co. United States	Mesa Ave. / Park Ave. / Lake Cir. (38.79330, -104.85226)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 30.7188	Other (At-Grade) Single-Lane	2005	ICD estimated from Google Maps linework.
Greeley, CO Weld Co. United States	Promontory Cir. / Con Agra Dr. (40.41138, -104.85200)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 42.6720	Other (At-Grade) Multilane (2 Lane, 2x2 max)	2004	4 roundabouts in series; 6 in vicinity.
Greeley, CO Weld Co. United States	Promontory Cir. / W 18th St. (40.40869, -104.85120)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 42.6717	Other (At-Grade) Multilane (2 Lane, 2x2 max)	2004	4 roundabouts in series; 6 in vicinity.
Greeley, CO Weld Co. United States	Promontory Cir. / W. 16th St. (40.41505, -104.85090)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 42.6720	Other (At-Grade) Multilane (2 Lane, 2x2 max)	2004	4 roundabouts in series; 6 in vicinity.
Greeley, CO Weld Co. United States	Promontory Cir. / W 11th St. (40.41889, -104.84990)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 44.1960	Other (At-Grade) Multilane (2 Lane, 2x2 max)	2004	4 roundabouts in series; 6 in vicinity.
Commerce City, CO Adams Co. United States	E 119th Ave. / Oakland St. / (unknown) (39.91279, -104.84949)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 28.9560	Other (At-Grade) Single-Lane	2004	Year Completed estimated (2003-2004). East leg added 2008-2010.
Colorado Springs, CO El Paso Co. United States	(unknown #2) (38.87847, -104.84910)	Other Existing	Unknown Unknown	0 Approaches 0 Driveways 18.5952	Other (At-Grade) Unknown		ICD estimated from Google Maps linework.
Colorado Springs, CO El Paso Co. United States	Lake Ave. / Lake Cir. (38.79144, -104.84880)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 23.2724	Other (At-Grade) Single-Lane	1995	Year Completed estimated (before 1999). ICD estimated from Google Maps linework.
(unincorporated), CO Douglas Co. United States	Lioness Way / Lioness Pl. (39.53520, -104.84861)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 40.5287	Other (At-Grade) Single-Lane	2005	ICD estimated from Google Maps linework.
Centennial, CO Arapahoe Co. United States	S Peoria St. / E Peakview Ave. (39.59674, -104.84809)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 36.8116	Other (At-Grade) Multilane (2 Lane, unspecified)	2013	ICD estimated from Google Maps linework.
Greenwood Village, CO Arapahoe Co. United States	Peoria St. / Cherry Creek Dr. (39.61015, -104.84800)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 25.7631	Other (At-Grade) Single-Lane	2000	ICD estimated from Google Maps linework.
Colorado Springs, CO El Paso Co. United States	Beech Ave. / 1st St. (38.79048, -104.84660)	Other Existing	Unknown Unknown	4 Approaches 0 Driveways 42.8219	Other (At-Grade) Single-Lane		ICD estimated from Google Maps linework.
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.
Engelwood, CO Douglas Co. United States	Aviator Way / Aviator Ln. (39.55846, -104.84554)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 45.7200	Other (At-Grade) Single-Lane	2003	Year Completed estimated (2002-2003). South leg added 2004-2005.
Young American, CO Douglas Co. United States	E Plum Creek Pkwy. / Lake Gulch Rd. / S Gilbert St. (39.35773, -104.84209)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 50.2920	Other (At-Grade) Multilane (2 Lane, 2x1 max)	2020	Year Completed estimated (2019-2021).
Colorado Springs, CO El Paso Co. United States	Lake Ave. / Berthie Cir. (38.79348, -104.83950)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 16.7557	Other (At-Grade) Single-Lane	1995	Year Completed unknown (before 1999). ICD estimated from Google Maps linework.
Cheyenne, WY Laramie Co. United States	Vandehei Ave. / I-25 SB Ramps / Bishop Blvd. (41.18365, -104.83900)	Roundabout Existing	All-Way Yield None	6 Approaches 0 Driveways 44.9428	Freeway Ramps (Grade-Separated) Single-Lane	2011	Previously controlled by one-way stop ICD estimated from Google Maps linework.
Commerce City, CO Adams Co. United States	Turnberry Pkwy. / Revere St. (39.89062, -104.83800)	Roundabout Existing	All-Way Yield Unknown	3 Approaches 0 Driveways 36.5760	Other (At-Grade) Single-Lane	2005	Year Completed estimated (2004-2005).
Cheyenne, WY Laramie Co. United States	Vandehei Ave. / I-25 NB Ramps / Hynds Blvd. (41.18365, -104.83710)	Roundabout Existing	All-Way Yield None	6 Approaches 0 Driveways 46.7405	Freeway Ramps (Grade-Separated) Single-Lane	2011	Previously controlled by one-way stop ICD estimated from Google Maps linework.
Colorado Springs, CO El Paso Co. United States	Northgate Blvd. / I-25 SB Ramps (39.02538, -104.83627)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 49.1752	Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified)	2013	https://www.krdo.com/news/local-news/north-gate-blvd-set-to-reopen-under-i-25-/34107950 . ICD estimated from Google Maps linework.
Commerce City, CO Adams Co. United States	E 105th Ave. / Uvalda St. (39.88673, -104.83520)	Roundabout Existing	All-Way Yield Unknown	3 Approaches 0 Driveways 38.1000	Other (At-Grade) Single-Lane	2003	Year Completed estimated (2002-2003).
Brighton, CO Adams Co. United States	Southgate Blvd. / Gateway St. (39.91320, -104.83390)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 38.1000	Other (At-Grade) Multilane (2 Lane, 2x1 max)	2018	Year Completed estimated (2018-2019).
Colorado Springs, CO El Paso Co. United States	Lake Ave. / Old Broadmoor Rd. (38.79479, -104.83360)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 22.3405	Other (At-Grade) Single-Lane	1995	Year Completed unknown (before 1999). ICD estimated from Google Maps linework.
Castle Rock, CO Douglas Co. United States	Plum Creek Pkwy. / S Eaton Cir. / Eaton St. (39.36073, -104.83311)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 44.1960	Other (At-Grade) Multilane (2 Lane, 2x1 max)	2020	Elliptical shaped. ICD = 145 ft x 115 ft. Year Completed estimated (2020-2021).
Commerce City, CO Adams Co. United States	Wheeling St. / E 106th Ave. / Victor St. (39.88895, -104.83121)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 38.1000	Other (At-Grade) Single-Lane	2003	Painted splitter islands.
Colorado Springs, CO El Paso Co. United States	Struthers Rd. / Gleneagle Dr. / Gleneagle Gate View (39.03042, -104.83108)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 64.0080	Other (At-Grade) Multilane (2 Lane, 2x2 max)	2020	Oval shaped. ICD = 210 ft x 185 ft.
Colorado Springs, CO El Paso Co. United States	Northgate Blvd. / I-25 NB Ramps (39.02725, -104.83094)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 48.2461	Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified)	2013	https://www.krdo.com/news/local-news/north-gate-blvd-set-to-reopen-under-i-25-/34107950 . ICD estimated from Google Maps linework.
Meridian Inernational Business Center, CO Douglas Co. United States	Tall Oaks St. / Bristleridge Dr. (39.53104, -104.82951)	Other Existing	Unknown Unknown	3 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane		No splitter islands.