Roundabouts Database Index

30321 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
Littleton, CO Arapahoe Co. United States	Elati St. / Briarwood St. (39.59236, -104.99770)	Traffic Calming Circle Existing	One-Way/Two-Way Stop None	4 Approaches 0 Driveways 5.5221	Other (At-Grade) Single-Lane		Functional Class: Collector ICD estimated from Google Maps linework.
Loveland, CO Larimer Co. United States	Byrd Dr. / Test Dr. (40.43198, -104.99591)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 47.2729	Other (At-Grade) Multilane (2 Lane, unspecified)	2007	ICD estimated from Google Maps linework.
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
Johnstown, CO Larimer Co. United States	CO 402 / I-25 SB Ramps (40.37811, -104.99418)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 46.4010	Freeway Ramps (Grade-Separated) Single-Lane	2019	Opened to traffic October 18, 2019. ICD estimated from Google Maps linework.
Loveland, CO Larimer Co. United States	E Crossroads Blvd. / I-25 SB Ramps (40.43596, -104.99335)	Roundabout Existing	All-Way Yield Unknown	3 Approaches 0 Driveways 40.9068	Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified)	2011	ICD estimated from Google Maps linework.
Northglenn, CO Adams Co. United States	Melody Dr. / Kennedy Dr. (39.89222, -104.99270)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 36.6541	Other (At-Grade) Single-Lane	1999	Roundabout is single-lane except for NB approach with separate RT lane. ICD estimated from Google Maps linework.
Johnstown, CO Larimer Co. United States	CO 402 / I-25 NB Ramps (40.37813, -104.99255)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 45.4911	Freeway Ramps (Grade-Separated) Single-Lane	2019	Opened to traffic October 18, 2019. ICD estimated from Google Maps linework.
Fort Collins, CO Larimer Co. United States	Ketcher Rd. / SW Frontage Rd. (40.50855, -104.99242)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane	2022	https://www.reporterherald.com/2022/05/14/ketcher-road-bridge-over-i-25-to-reopen-may-18-following-seven-month-construction-closure/
Loveland, CO Larimer Co. United States	Sky Pond Dr. / Mall Access Rd. / (parking lot) (40.41142, -104.99168)	Roundabout Existing	All-Way Yield None	4 Approaches 1 Driveways 55.4717	Other (At-Grade) Single-Lane	2005	Right-turn-only lane on southeast leg. ICD estimated from Google Maps linework.
Loveland, CO Larimer Co. United States	E Crossroads Blvd. / I-25 NB Ramps (40.43597, -104.99138)	Roundabout Existing	All-Way Yield Unknown	3 Approaches 0 Driveways 38.1797	Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified)	2011	ICD estimated from Google Maps linework.
Englewood, CO Arapahoe Co. United States	Englewood Pkwy. / S. Cherokee St. (39.65491, -104.99110)	Roundabout Existing	Unknown Unknown	4 Approaches 0 Driveways 41.3782	Other (At-Grade) Multilane (2 Lane, unspecified)	2000	ICD estimated from Google Maps linework.
Windsor, CO Weld Co. United States	Westgate Dr. / Oakmond St. (40.48121, -104.98870)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 48.7680	Other (At-Grade) Multilane (2 Lane, 2x1 max)	2020	Year Completed estimated (2019-2021). Opened 1999-2004 as single-lane cul-de-sac with south leg and stubs on west and east legs and no evidence of traffic control; the outer portions of circulatory roadway were striped out. Converted to 2x1 roundabout 2019-2021 with addition of north leg.
Johnstown, CO Larimer Co. United States	CR 18 / NE Frontage Rd. / SE Frontage Rd. (40.37811, -104.98867)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 45.4911	Other (At-Grade) Single-Lane	2019	Opened to traffic October 18, 2019. ICD estimated from Google Maps linework.
Timnath, CO Larimer Co. United States	Weitzel St. / Swetsville Zoo Rd. (40.51930, -104.98815)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 48.7680	Other (At-Grade) Multilane (2 Lane, 2x1 max)	2022	Year Completed estimated (2021-2023).
Loveland, CO Larimer Co. United States	Clydesdale Pkwy. / Stallion Dr. (40.43774, -104.98796)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 37.2697	Other (At-Grade) Single-Lane	2008	Year Completed estimated (2006-2010). ICD estimated from Google Maps linework.
Loveland, CO Larimer Co. United States	E CR 16 / I-25 SB Ramps / CR 5 (I-25 Frontage Road) (40.36357, -104.98666)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 0.0000	Freeway Ramps (Grade-Separated) Single-Lane	2023	https://www.codot.gov/news/2023/april/90-day-temporary-closures-lcr16-at-i25-starting-april-12
Thornton, CO Adams Co. United States	Lincoln St. / E 141st Pl. / (parking) (39.95280, -104.98624)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 45.7200	Other (At-Grade) Single-Lane	2013
Johnstown, CO Weld Co. United States	SH 60 / Gateway Cir. (40.33527, -104.98559)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 59.4360	Other (At-Grade) Multilane (2 Lane, 2x2 max)	2024	Primary access to large travel and fuel center. Year Completed estimated (2023-2024).
Johnstown, CO Larimer Co. United States	Thompson Pkwy. / (parking lots) (40.40506, -104.98335)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 32.7405	Other (At-Grade) Multilane (2 Lane, unspecified)	2006	ICD estimated from Google Maps linework.
Thornton, CO Adams Co. United States	Grant St. / E 140th Ave. / (parking) (39.94932, -104.98311)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 62.4840	Other (At-Grade) Multilane (2 Lane, 2x1 max)	2018	Year Completed estimated (2018-2019).
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	Grant St. / (parking) (39.94597, -104.98307)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 60.9600	Other (At-Grade) Multilane (2 Lane, 2x1 max)	2018	Year Completed estimated (2018-2019).
Thornton, CO Adams Co. United States	Grant St. / E 141 Pl. (39.95214, -104.98286)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 60.9600	Other (At-Grade) Multilane (2 Lane, 2x1 max)	2016	West leg added 2022-2023.
Windsor, CO Larimer Co. United States	CR 5 / Oakmont St. / Oakmont Ln. (40.48214, -104.98213)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 45.7200	Other (At-Grade) Multilane (2 Lane, 2x1 max)	2021	Year Completed estimated (2020-2021).
Windsor, CO Larimer Co. United States	CR 5 / Westgate Dr. / E CR 32 E (40.48667, -104.98201)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 45.7200	Other (At-Grade) Multilane (2 Lane, 2x1 max)	2021	Year Completed estimated (2020-2021).
Thornton, CO Adams Co. United States	Grant St. / E 143rd Pl. (39.95485, -104.98191)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 60.9600	Other (At-Grade) Multilane (2 Lane, 2x2 max)	2013	Opened with north and west legs 2013. South and east legs added 2015.
Thornton, CO Adams Co. United States	Grant St. / E 146th Ave. / (parking) (39.96090, -104.98184)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 60.9600	Other (At-Grade) Multilane (2 Lane, 2x2 max)	2018	Year Completed estimated (2018-2019).
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
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).
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	Buss Grove Rd. (CR 40) / Timnath Pkwy. (40.53741, -104.97702)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 57.9120	Other (At-Grade) Multilane (2 Lane, 2x1 max)	2024
Timnath, CO Larimer Co. United States	2nd Ave. / Signal Tree Dr. (40.52405, -104.97700)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 39.6240	Other (At-Grade) Single-Lane	2020
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).
Thornton, CO Adams Co. United States	Washington Center Pkwy. / Lafayette St. (39.91876, -104.97204)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 45.7200	Other (At-Grade) Single-Lane	2002	Year Completed estimated (1999-2002).
Littleton, CO Arapahoe Co. United States	Franklin St. / Cherryville Rd. (39.61832, -104.96920)	Traffic Calming Circle Existing	All-Way Yield None	3 Approaches 0 Driveways 8.2800	Other (At-Grade) Single-Lane		ICD estimated from Google Maps linework.
Denver, CO Denver Co. United States	Denver City Park (39.74778, -104.95767)	Other Existing	Unknown Unknown	5 Approaches 0 Driveways 0.0000	Other (At-Grade) Unknown
Windsor, CO Larimer Co. United States	Cherry Blossom Dr. / Stone Chase Dr. (40.45095, -104.95728)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 22.7210	Other (At-Grade) Single-Lane	2006	ICD estimated from Google Maps linework.
Denver, CO Denver Co. United States	Denver City Park (39.74482, -104.95685)	Other Existing	Unknown Unknown	3 Approaches 0 Driveways 0.0000	Other (At-Grade) Unknown		Pedestrian access to central island.
Thornton, CO Adams Co. United States	Elizabeth Circle (39.98312, -104.95660)	Other Existing	Unknown Unknown	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Unknown		Pedestrian access to central island.
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).
Denver, CO Denver Co. United States	Denver City Park (39.74610, -104.95465)	Other Existing	Unknown Unknown	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Unknown		Pedestrian access to central island.
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	Club Dr. / Grand Tree Blvd. (40.52432, -104.95460)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 51.8160	Other (At-Grade) Single-Lane	2006
Thornton, CO Adams Co. United States	E 142nd Dr. / Adams St. / St Paul St. (39.95444, -104.94953)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 33.5280	Other (At-Grade) Single-Lane	2006
Dacono, CO Weld Co. United States	Flying Circle Blvd. / 6th St. / Collins Ct. (40.08589, -104.94941)	Other Existing	All-Way Yield None	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane		No splitter island on western leg. Oil well in center island.
Windsor, CO Larimer Co. United States	Cherry Blossom Dr. / Blackwood Dr. (40.45061, -104.94835)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 21.8122	Other (At-Grade) Single-Lane	2006	ICD estimated from Google Maps linework.
Windsor, CO Larimer Co. United States	CR 13 / Steeplechase Dr. / New Liberty Rd. (40.44570, -104.94420)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 39.6240	Other (At-Grade) Single-Lane	2019	https://nextdoor.com/agency-post/co/windsor/town-of-windsor/roundabout-construction-at-7th-new-liberty-begins-next-week-114483154/
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.
Thornton, CO Adams Co. United States	Riverdale Rd. / Quebec St. (39.91040, -104.90320)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 35.0520	Other (At-Grade) Single-Lane	2018
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.