Roundabouts Database

30472 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
Colorado Springs, CO
El Paso Co.
United States 		Bradley Rd. / SR 83 (S Academy Blvd.) NB Ramps / Cody Dr.
(38.77019, -104.75705) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
39.6240 		Freeway Ramps (Grade-Separated)
Single-Lane 		2007 Year Completed estimated (2006-2007).
Colorado Springs, CO
El Paso Co.
United States 		Peak Innovation Pkwy. / Integration Loop
(38.77922, -104.71029) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
54.8640 		Other (At-Grade)
Multilane (2 Lane, 2x1 max) 		2021 Yield-controlled right-turn bypass lanes on north and south legs. Add-lane right-turn bypass lanes on east and west legs. Year Completed estimated (2020-2021).
Colorado Springs, CO
El Paso Co.
United States 		Shale Dr. / Graphite Dr.
(38.89675, -104.67676) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
51.8160 		Other (At-Grade)
Single-Lane 		2018 Very wide circulatory roadway relative to entry width. Year Completed estimated (2017-2019).
Colorado Springs, CO
El Paso Co.
United States 		Mustang Rim Dr. / Durango Kid Dr.
(38.92918, -104.68881) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
38.1000 		Other (At-Grade)
Single-Lane 		2012 Year Completed estimated (2011-2015).
Colorado Springs, CO
El Paso Co.
United States 		Issaquah Dr. / Durango Kid Dr.
(38.92864, -104.68562) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
38.1000 		Other (At-Grade)
Single-Lane 		2012 Year Completed estimated (2011-2015).
Colorado Springs, CO
El Paso Co.
United States 		Issaquah Dr. / Hawk Wind Blvd.
(38.92294, -104.68581) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
36.5760 		Other (At-Grade)
Single-Lane 		2009 Year Completed estimated (2006-2011).
Colorado Springs, CO
El Paso Co.
United States 		Kenosha Dr. / Mulberry Dr.
(38.94566, -104.67644) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
36.5760 		Other (At-Grade)
Single-Lane 		2016 Year Completed estimated (2015-2017).
Colorado Springs, CO
El Paso Co.
United States 		Shiloh Mesa Dr. / Mulberry Dr.
(38.94332, -104.67591) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
38.1000 		Other (At-Grade)
Single-Lane 		2018 Year Completed estimated (2017-2019).
Colorado Springs, CO
El Paso Co.
United States 		Royal Pine Dr. / Purple Plum Way
(38.97220, -104.75351) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
33.5280 		Other (At-Grade)
Single-Lane 		2010 Year Completed estimated (2007-2011).
Colorado Springs, CO
El Paso Co.
United States 		Spectrum Loop / Grey Hawk Dr.
(39.02499, -104.81383) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
33.5280 		Other (At-Grade)
Single-Lane 		2008 Year Completed estimated (2006-2011).
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.
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
Parker, CO
Douglas Co.
United States 		S Red Sky Dr. / S Swift Fox Way
(39.49572, -104.80072) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
1 Driveways
33.5280 		Other (At-Grade)
Single-Lane 		2005 Year Completed estimated (2004-2005).
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.
Aurora, CO
Arapahoe Co.
United States 		S Sampson Gulch Way / E Clifton Dr.
(39.56850, -104.69683) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
45.7200 		Other (At-Grade)
Single-Lane 		2016 Year Completed estimated (2015-2017).
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).
Aurora, CO
Arapahoe Co.
United States 		E Ellsworth Ave. / Robertsdale St.
(39.71661, -104.67347) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
45.7200 		Other (At-Grade)
Single-Lane 		2019 Year Completed estimated (2018-2019).
Aurora, CO
Arapahoe Co.
United States 		E Ellsworth Ave. / Trussville St. / 1st Ave.
(39.71830, -104.66897) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
45.7200 		Other (At-Grade)
Single-Lane 		2021 Year Completed estimated (2020-2021).
Commerce City, CO
Adams Co.
United States 		Walden St. / E 105th Ave.
(39.88769, -104.77644) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
44.1960 		Other (At-Grade)
Single-Lane 		2005 Year Completed estimated (2004-2005).
Commerce City, CO
Adams Co.
United States 		E 112th Ave. / Potomac St.
(39.89963, -104.82770) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
48.7680 		Other (At-Grade)
Single-Lane 		2018 Year Completed estimated (2017-2018).
Commerce City, CO
Adams Co.
United States 		E 112th Ave. / (parking)
(39.89972, -104.82580) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
48.7680 		Other (At-Grade)
Single-Lane 		2018 Year Completed estimated (2017-2018).
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
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).
Brighton, CO
Adams Co.
United States 		Longs Peak St. / Baler Ct.
(39.99464, -104.75476) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
33.5280 		Other (At-Grade)
Single-Lane 		2022 Year Completed estimated (2021-2022).
Brighton, CO
Adams Co.
United States 		Longs Peak St. / Bowie Dr. / N 46th Ave.
(39.99239, -104.75969) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
33.5280 		Other (At-Grade)
Single-Lane 		2021 2022 or earlier (SV)
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).
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.
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 		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
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 		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).
Broomfield, CO
Broomfield Co.
United States 		W 138th Ave. / Kalamath St. / Maddox Ct.
(39.94514, -105.00113) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
1 Driveways
30.4800 		Other (At-Grade)
Single-Lane 		2008
Broomfield, CO
Broomfield Co.
United States 		W 138th Ave. / Quivas St. / Beacon St.
(39.94559, -105.00860) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
1 Driveways
32.0040 		Other (At-Grade)
Single-Lane 		2008 Year Completed estimated (2008-2010).
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).
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).
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).
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
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).
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.
Commerce City, CO
Adams Co.
United States 		E 121st Ave. / Jasper St.
(39.91627, -104.80425) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
36.5760 		Other (At-Grade)
Single-Lane 		2003
Arvada, CO
Jefferson Co.
United States 		W 94th Ave. / Hallett St.
(39.86650, -105.22434) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
30.4800 		Other (At-Grade)
Single-Lane 		2014
Greeley, CO
Weld Co.
United States 		N 35th Ave. / W O St. / CR 64
(40.45520, -104.73479) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
67.0560 		Other (At-Grade)
Single-Lane 		2022 Merging right-turn bypass lanes on all legs. Designed with striped out outer portion of circulatory roadway for future expansion to outside. Year Completed estimated (2021-2023).
Fountain, CO
El Paso Co.
United States 		Santa Fe Ave. / S Charter Oak Ranch Rd.
(38.67148, -104.71481) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
48.7680 		Other (At-Grade)
Single-Lane 		2023 Painted splitter island on west leg. https://www.codot.gov/news/2023/may/mamsip-charter-oak-ranch-road-completed
Breckenridge, CO
Summit Co.
United States 		N Park Ave. / Watson Ave.
(39.48470, -106.04887) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Multilane (2 Lane, 2x1 max) 		2022 https://www.townofbreckenridge.com/live/watson-roundabout
Castle Pines, CO
Douglas County
United States 		E Happy Canyon Rd. / Lagae Rd.
(39.45014, -104.87819) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
1 Driveways
60.9600 		Other (At-Grade)
Multilane (2 Lane, 2x2 max) 		2024 https://coloradocommunitymedia.com/2024/06/27/castle-pines-lagae-happy-canyon-road-roundabout-open/
New Castle, CO
Garfield County
United States 		US 6 / Castle Valley Blvd.
(39.56797, -107.51604) 		Roundabout
Existing 		All-Way Yield
Rectangular Rapid Flashing Beacon (RRFB) 		4 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Multilane (2 Lane, 2x1 max) 		2025 https://kdvr.com/news/local/new-multi-lane-roundabout-at-intersection-of-us-6-and-castle-valley-road/
Castle Rock, CO
Douglas Co.
United States 		Mikelson Blvd. / Mitchell St.
(39.36622, -104.79813) 		Roundabout
Existing 		All-Way Yield
Rectangular Rapid Flashing Beacon (RRFB) 		3 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Multilane (2 Lane, 2x1 max) 		2024 https://www.youtube.com/watch?v=QkZTn1X4oAY
Castle Rock, CO
Douglas Co.
United States 		Crystal Valley Pkwy. / S Wilcox St. / E Frontage Rd. / I-25 NB Exit Ramp
(39.33865, -104.87343) 		Roundabout
Existing 		All-Way Yield
Rectangular Rapid Flashing Beacon (RRFB) 		5 Approaches
0 Driveways
60.9600 		Freeway Ramps (Grade-Separated)
Multilane (2 Lane, 2x1 max) 		2024 https://www.crgov.com/3131/Crystal-Valley-Interchange. Partially open in November 2024.
Castle Rock, CO
Douglas Co.
United States 		E Montaine Cir. / Quarry Mesa Dr.
(39.32630, -104.85197) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
42.6720 		Other (At-Grade)
Single-Lane 		2023
Black Forest, CO
El Paso Co.
United States 		SR 50 (Walker Rd.) / Jane Lundeen Dr.
(39.09974, -104.76828) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
54.8637 		Other (At-Grade)
Multilane (2 Lane, 2x1 max) 		2023 Double left turn on south leg. Right-turn-only on west leg.
Falcon, CO
El Paso Co.
United States 		Falcon Market Pl. / Woodmen Frontage Rd. / E Woodmen Rd.
(38.94134, -104.61192) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
1 Driveways
45.7200 		Other (At-Grade)
Single-Lane 		2022
Colorado Springs, CO
El Paso Co.
United States 		Meridian Sol Dr. / Swingline Rd.
(38.93013, -104.60820) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
39.6240 		Other (At-Grade)
Single-Lane 		2022 Elliptical shaped. ICD = 130 ft x 105 ft.
Colorado Springs, CO
El Paso Co.
United States 		Meadow Brook Pkwy. / Newt Dr.
(38.84432, -104.69242) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
27.4317 		Other (At-Grade)
Single-Lane 		2023
Colorado Springs, CO
El Paso Co.
United States 		S Troy Hill Rd. / Joystone Dr.
(38.82702, -104.72760) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
1 Driveways
38.1000 		Other (At-Grade)
Single-Lane 		2019
Fort Collins, CO
Larimer Co.
United States 		E Mulberry Street Frontage Rd. / Greenfield Dr.
(40.58247, -105.01497) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Multilane (2 Lane, 2x1 max) 		2024
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 		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).
Greeley, CO
Weld Co.
United States 		W F St. / N 35th Ave.
(40.44090, -104.73501) 		Roundabout
Existing 		All-Way Yield
At-grade Rail Crossing Signals/Gates (controlling approach only) 		4 Approaches
0 Driveways
38.1000 		Other (At-Grade)
Single-Lane 		2022 Right-turn-only lane and two-lane exit on south leg. At-grade rail crossing approximately 260 feet to north. Year Completed estimated (2021-2023).
Greeley, CO
Weld Co.
United States 		W C St. / N 35th Ave.
(40.43739, -104.73495) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
47.2440 		Other (At-Grade)
Multilane (2 Lane, 2x1 max) 		2022 Year Completed estimated (2021-2023).
Berthoud, CO
Larimer Co.
United States 		CR 8 / CR 21
(40.30512, -105.13134) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
41.1480 		Other (At-Grade)
Single-Lane 		2023 https://www.larimer.gov/sites/default/files/2023-safety-report-final-20240806.pdf (page 20)
Estes Park, CO
Larimer Co.
United States 		US 36 (N Saint Vrain Ave.) / Community Dr.
(40.37449, -105.49980) 		Roundabout
Existing 		All-Way Yield
Unknown 		3 Approaches
0 Driveways
48.7680 		Other (At-Grade)
Multilane (2 Lane, 2x1 max) 		2022 Year Completed estimated (2019-2024).
Estes Park, CO
Larimer Co.
United States 		US 36 / US 34 Business / Crags Dr.
(40.37248, -105.52360) 		Roundabout
Existing 		All-Way Yield
Unknown 		4 Approaches
0 Driveways
36.5760 		Other (At-Grade)
Multilane (2 Lane, 2x1 max) 		2022 Elliptical shaped. Replaced two two-way stop-controlled intersections. ICD = 120 ft x 95 ft. Year Completed estimated (2019-2024).
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).
La Salle, CO
Weld Co.
United States 		CR 44 / US 85 SB Ramps
(40.30821, -104.74948) 		Roundabout
Existing 		All-Way Yield
Unknown 		3 Approaches
0 Driveways
53.3400 		Freeway Ramps (Grade-Separated)
Single-Lane 		2024 https://www.9news.com/article/traffic/us-85-colorado-new-interchange/73-2b7e4e5d-a889-4452-8d39-477c814991d0
Longmont, CO
Boulder Co.
United States 		Harvest Moon Dr. / (parking) / (unknown)
(40.15101, -105.08420) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
41.1480 		Other (At-Grade)
Single-Lane 		2023 Right-turn-only lane and two-lane exit on north leg. Year Completed estimated (2022-2023).
Lochbuie, CO
Adams Co.
United States 		E 168th Ave. / Frontage Rd.
(40.00051, -104.71769) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
51.8160 		Other (At-Grade)
Multilane (2 Lane, 2x1 max) 		2020 Ellipitcal shaped. ICD = 170 ft x 140 ft.
Broomfield, CO
Adams Co.
United States 		W 122nd Ave. / N Park Centre Dr.
(39.92089, -105.01002) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
36.5760 		Other (At-Grade)
Single-Lane 		2002 North leg stubbed. Year Completed estimated (2001-2003).
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).
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
Westminster, CO
Adams Co.
United States 		W 117th Ave. / Quitman St.
(39.90885, -105.04229) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
36.5760 		Other (At-Grade)
Single-Lane 		2005
Aurora, CO
Arapahoe Co.
United States 		Copperleaf Blvd. / Radcliff Pkwy.
(39.63537, -104.72624) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
54.8640 		Other (At-Grade)
Multilane (2 Lane, 2x1 max) 		2022 Year Completed estimated (2022-2023).
Monument, CO
El Paso County
United States 		W Baptist Rd. / Terrazzo Dr.
(39.05656, -104.85476) 		Roundabout
Existing 		All-Way Yield
Unknown 		4 Approaches
0 Driveways
53.3400 		Other (At-Grade)
Multilane (2 Lane, 2x1 max) 		2024 https://www.codot.gov/projects/archives/baptistterrazzoroundabout
Gypsum, CO
Eagle Co.
United States 		US 6 / Valley Rd. / Estes Ln.
(39.64477, -106.94904) 		Roundabout
Existing 		All-Way Yield
Rectangular Rapid Flashing Beacon (RRFB) 		4 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane 		2025 https://www.townofgypsum.com/Home/Components/FacilityDirectory/FacilityDirectory/1066/1310
Frederick, CO
Weld Co.
United States 		Colorado Blvd. (CR 13) / 13th St.
(40.09110, -104.94210) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
60.9600 		Other (At-Grade)
Multilane (2 Lane, 2x1 max) 		2024 East leg stubbed.
(unincorporated), CO
Weld Co.
United States 		CR 6 / Colorado Blvd. (CR 13)
(40.02946, -104.94265) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane 		2025 https://www.9news.com/article/traffic/new-roundabout-weld-county-northern-colorado/73-263865c9-6e88-4464-b5cc-4a6d3f7445be
Evans, CO
Weld Co.
United States 		37th St. / 47th Ave. / Arrowhead Dr.
(40.37777, -104.75618) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
48.7680 		Other (At-Grade)
Multilane (2 Lane, 2x2 max) 		2023 https://www.evanscolorado.gov/your-government/capital-projects/design-projects/#37thStreetWideningProject