Roundabouts Database

29465 Results

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City, State
County
Country 		Intersection
(Lat, Lng) 		Type
Status 		Control Type / Other Control Type Approaches / Driveways / ICD (m) Functional Class /
LaneType 		Year Completed Comments
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.
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.
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 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 		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.
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 		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 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 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.
(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.
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.
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.
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).
(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.
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.
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
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.
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
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).
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 		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.
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 		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.
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 		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.
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
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.
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).
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.
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).
(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.
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.
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 		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.
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.
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.
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
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).
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.
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 		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.
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.
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.
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.
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 		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 		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).
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 		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 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).
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
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
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).
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/
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.
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.
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
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
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).
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.
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).
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.
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.
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
(39.74778, -104.95767) 		Other
Existing 		Unknown
Unknown 		5 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Unknown
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.
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).
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).
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 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
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
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).
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.
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).
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).
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.
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 		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. / 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).
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 		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
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
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.
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.
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.
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.
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.
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.
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/
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.
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.
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.
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.
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
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.
Littleton, CO
Arapahoe Co.
United States 		Elati St. / Arapahoe Rd.
(39.59515, -104.99770) 		Traffic Calming Circle
Existing 		One-Way/Two-Way Stop
None 		4 Approaches
0 Driveways
11.0437 		Other (At-Grade)
Single-Lane 		Functional Class: Collector ICD estimated from Google Maps linework.