| City, 
                State County Country | Intersection (Lat, Lng) | Type Status | Control Type / Other Control Type | Approaches / Driveways / ICD (m) | Functional Class / LaneType | Year Completed | Comments | 
|---|---|---|---|---|---|---|---|
| Durango,
                CO La Plata Co. United States | Jenkins Ranch Rd. / Ophir Dr. (37.28321, -107.85120) | Roundabout Existing | Unknown Unknown | 3 Approaches 0 Driveways 26.6075 | Other (At-Grade) Single-Lane | 2004 | ICD estimated from Google Maps linework. | 
| Durango,
                CO La Plata Co. United States | Jenkins Ranch Rd. / Molas Dr. (37.28099, -107.85550) | Roundabout Existing | Unknown Unknown | 3 Approaches 0 Driveways 28.5089 | Other (At-Grade) Single-Lane | 2004 | ICD estimated from Google Maps linework. | 
| Montrose,
                CO Montrose Co. United States | Niagara Rd. / Hillcrest Dr. (38.46724, -107.85663) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-Lane | 2024 | https://www.montrosepress.com/hillcrest-and-niagara-roundabout-opens/image_bc92464a-3aea-11ef-be15-b79f08cef2a5.html | 
| Montrose,
                CO Montrose Co. United States | S Hillcrest Dr. / Sunnyside Rd. (38.47450, -107.85663) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 15.8954 | Other (At-Grade) Single-Lane | 2016 | date: https://www.cityofmontrose.org/CivicAlerts.aspx?AID=1235 ICD estimated from Google Maps linework. | 
| Montrose,
                CO Montrose Co. United States | Miami Rd. / Hillcrest Dr. (38.48179, -107.85677) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways | Other (At-Grade) Single-Lane | 2019 | https://www.cityofmontrose.org/701/Miami-Hillcrest-Roundabout-Project | 
| Durango,
                CO La Plata Co. United States | CR 238 / Fort Lewis Dr. / College Dr. (37.27940, -107.85940) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 42.7643 | Other (At-Grade) Single-Lane | 2007 | ICD estimated from Google Maps linework. | 
| Montrose,
                CO Montrose Co. United States | Ogden Rd. / Woodgate Rd. (38.45096, -107.86297) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 32.7365 | Other (At-Grade) Single-Lane | 2011 | Year Completed estimated (2011-2012). ICD estimated from Google Maps linework. | 
| Durango,
                CO La Plata Co. United States | Florida Rd. / Riverview Dr. (37.28319, -107.86900) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 30.4086 | Other (At-Grade) Single-Lane | 2010 | ICD estimated from Google Maps linework. | 
| Telluride,
                CO San Miguel Co. United States | CO-145 / CO-145 Spur (37.95036, -107.87135) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 37.6712 | Other (At-Grade) Single-Lane | 2013 | Through bypass lane along top of T-intersection. Year Completed estimated (2011-2014). ICD estimated from Google Maps linework. | 
| Montrose,
                CO Montrose Co. United States | Grand Ave. / N 9th St. (38.48349, -107.88856) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 36.5760 | Other (At-Grade) Single-Lane | 2012 | Year Completed estimated (2011-2012). | 
| Parachute,
                CO Garfield Co. United States | Old Hwy 6 / I-70 EB Ramps / (unknown) (39.42828, -108.07440) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 57.9120 | Freeway Ramps (Grade-Separated) Single-Lane | 2012 | |
| Parachute,
                CO Garfield Co. United States | Old Hwy 6 / I-70 WB Ramps (39.42982, -108.07610) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 51.8160 | Freeway Ramps (Grade-Separated) Single-Lane | 2012 | |
| Farmington,
                NM San Juan Co. United States | Foothills Dr. / Rinconada St. (36.79144, -108.13909) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways | Other (At-Grade) Single-Lane | 2017 | Year Completed estimated (2015-2019). | 
| Farmington,
                NM San Juan Co. United States | E Main St. / S Miller Ave. (36.72910, -108.20333) | Roundabout Existing | All-Way Yield None | 3 Approaches 1 Driveways 0.0000 | Other (At-Grade) Single-Lane | 2020 | |
| Farmington,
                NM San Juan Co. United States | Main St. / Orchard Ave. (36.72905, -108.20540) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-Lane | 2020 | Oblong shaped. https://durangoherald.com/articles/332836 | 
| Farmington,
                NM San Juan Co. United States | W Main St. / Behrend Ave. (36.72906, -108.20803) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-Lane | 2020 | https://www.facebook.com/downtownfarmingtonnm/videos/main-st-phase-2-reopened-to-vehicles-on-november-24th-2020/170344904783299/ | 
| Farmington,
                NM San Juan Co. United States | W Main St. / Auburn Ave. (36.72905, -108.21064) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-Lane | 2020 | |
| Mancos,
                CO Montezuma Co. United States | Ruins Rd. / (entrance to visitor center) / (service road) (37.33917, -108.41185) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-Lane | 2023 | Entrance to Mesa Verde National Park. Year Completed estimated (2020-2023). Previous control was mix of stop and uncontrolled movements. | 
| Billings,
                MT Yellowstone Co. United States | Five Mile Rd. / Mary St. / (Billings Bypass) (45.84863, -108.42492) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 54.8640 | Other (At-Grade) Single-Lane | 2021 | https://www.yourbigsky.com/local-news-2/billings-bypass-project-roundabout-opening-on-november-24/ | 
| Billings,
                MT Yellowstone Co. United States | Old US 312 / Five Mile Rd. (45.86957, -108.42768) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-Lane | 2020 | https://www.mdt.mt.gov/pubinvolve/billingsbypass/fmr.shtml | 
| Bozeman,
                MT Yellowstone Co. United States | Bench Blvd. / Hilltop Rd. / Yellowstone River Rd. (45.81289, -108.46580) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 34.1305 | Other (At-Grade) Single-Lane | 2013 | Right-turn-only lane on south leg. ICD estimated from Google Maps linework. | 
| Grand Junction,
                CO Mesa Co. United States | Aviators Way / Eagle Dr. (39.11972, -108.52625) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 39.6240 | Other (At-Grade) Single-Lane | 2009 | Year Completed estimated (2006-2011). | 
| Grand Junction,
                CO Mesa Co. United States | Horizon Dr. / H Rd. / Eagle Dr. (39.11827, -108.52976) | Roundabout Existing | All-Way Yield Unknown | 4 Approaches 0 Driveways 60.2299 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2009 | Year Completed estimated (2006-2011). Slight elliptical shape. Right-turn bypass lane on west leg. ICD estimated from Google Maps linework. | 
| Grand Junction,
                CO Mesa Co. United States | Falcon Way / Sunstrand Way (39.12315, -108.53169) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 39.6240 | Other (At-Grade) Single-Lane | 2009 | Year Completed estimated (2006-2011). | 
| Billings,
                MT Yellowstone Co. United States | Hwy 3 / 27th St. / Airport Rd. (45.80209, -108.53540) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 45.7937 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2009 | Located at Billings airport. Functional Class: Principal Arterial ICD estimated from Google Maps linework. | 
| Grand Junction,
                CO Mesa Co. United States | Horizon Dr. / I-70 WB Ramps (39.11215, -108.53938) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 50.0415 | Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified) | 2015 | ICD estimated from Google Maps linework. | 
| Grand Junction,
                CO Mesa Co. United States | Horizon Dr. / I-70 EB Ramps / Horizon 70 Ct. (39.11140, -108.54051) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 50.0420 | Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified) | 2015 | ICD estimated from Google Maps linework. | 
| Grand Junction,
                CO Mesa Co. United States | Main St. / N 13th St. / S 13th St. (39.06731, -108.55072) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-lane w/ Traversable Central Island | 2023 | https://www.gjsentinel.com/news/western_colorado/mini-roundabout-installed-at-13th-and-main/article_bbcc8188-a4fb-11ee-bc44-b755269e8d08.html | 
| Grand Junction,
                CO Mesa Co. United States | Horizon Dr. / 12th St. (39.10165, -108.55234) | Roundabout Existing | All-Way Yield None | 4 Approaches 1 Driveways 39.6240 | Other (At-Grade) Single-Lane | 1998 | Bicycle-only (bike-only) driveway into circulatory roadway in northeast quadrant, leading into bicycle (bike) roundabout. | 
| Grand Junction,
                CO Mesa Co. United States | Main St. / 7th St. (39.06731, -108.56104) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 26.8912 | Other (At-Grade) Single-Lane | 2007 | ICD estimated from Google Maps linework. | 
| Grand Junction,
                CO Mesa Co. United States | Colorado Ave. / S. 2nd St. (39.06636, -108.56950) | Roundabout Existing | Unknown Unknown | 3 Approaches 0 Driveways 25.9643 | Other (At-Grade) Single-Lane | 2002 | ICD estimated from Google Maps linework. | 
| Grand Junction,
                CO Mesa Co. United States | Grand Ave. / N 1st St. / SR 340 (Broadway) / I-70 Business Loop (39.07031, -108.57097) | Roundabout Existing | All-Way Yield Unknown | 4 Approaches 0 Driveways 0.0000 | Other (At-Grade) Unknown | 2022 | https://www.codot.gov/news/2021/august-2021/1st-street-roundabout-project-enters-new-phase | 
| Grand Junction,
                CO Mesa Co. United States | Park Dr. / Meander Dr. / Meander Ct. (39.09085, -108.57322) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 30.4800 | Other (At-Grade) Single-Lane | 2009 | Year Completed estimated (2006-2011). | 
| Grand Junction,
                CO Mesa Co. United States | Independent Ave. / Sams Club entrance (39.08170, -108.58310) | Roundabout Existing | Unknown Unknown | 3 Approaches 0 Driveways 33.3754 | Other (At-Grade) Single-Lane | 2003 | Serves commercial development parking lot. ICD estimated from Google Maps linework. | 
| Grand Junction,
                CO Mesa Co. United States | G Rd. / 25th Rd. (39.10636, -108.58940) | Roundabout Existing | Unknown Unknown | 4 Approaches 0 Driveways 30.5834 | Other (At-Grade) Single-Lane | 2002 | ICD estimated from Google Maps linework. | 
| Billings,
                MT Yellowstone Co. United States | Meadow View Dr. / Meadow View Dr. (45.78325, -108.59372) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 28.9560 | Other (At-Grade) Single-Lane | 2017 | South leg stubbed. Year Completed estimated (2015-2018). | 
| Grand Junction,
                CO Mesa Co. United States | G Rd. / 24 1 / 2 Rd. (39.10635, -108.59870) | Roundabout Existing | Unknown Unknown | 4 Approaches 0 Driveways 34.2905 | Other (At-Grade) Single-Lane | 2005 | ICD estimated from Google Maps linework. | 
| Billings,
                MT Yellowstone Co. United States | MT Hwy 3 / Zimmerman Trl. (45.80647, -108.59981) | Roundabout Existing | All-Way Yield Unknown | 3 Approaches 0 Driveways 44.1250 | Other (At-Grade) Single-Lane | 2018 | ICD estimated from Google Maps linework. | 
| Billings,
                MT Yellowstone Co. United States | Grand Ave. / 36th St. W (45.78403, -108.60541) | Roundabout Existing | All-Way Yield Unknown | 4 Approaches 0 Driveways 50.8058 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2018 | Year Completed estimated (2015-2019). ICD estimated from Google Maps linework. | 
| West End,
                MT Yellowstone Co. United States | Central Ave. / S 36th St. W (45.76949, -108.60726) | Roundabout Existing | All-Way Yield Pedestrian Hybrid Beacon (PHB, HAWK) | 4 Approaches 0 Driveways 47.2440 | Other (At-Grade) Multilane (2 Lane, 2x1 max) | 2019 | |
| Grand Junction,
                CO Mesa Co. United States | 24 Rd. / G Rd. (39.10637, -108.60819) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 45.7200 | Other (At-Grade) Single-Lane | 2023 | https://www.westernslopenow.com/news/local-news/the-artist-for-the-24-rd-roundabout-is-picked/ | 
| Grand Junction,
                CO Mesa Co. United States | 24 Rd. / I-70 WB Ramps (39.11454, -108.60820) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 40.7732 | Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified) | 2006 | ICD estimated from Google Maps linework. | 
| Grand Junction,
                CO Mesa Co. United States | 24 Rd. / I-70 EB Ramps (39.11333, -108.60820) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 37.0672 | Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified) | 2006 | ICD estimated from Google Maps linework. | 
| Billings,
                MT Yellowstone Co. United States | Grand Ave. / 38th St. W (45.78400, -108.61111) | Roundabout Existing | All-Way Yield Unknown | 4 Approaches 0 Driveways 44.9757 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2017 | Fourth leg stubbed. ICD estimated from Google Maps linework. | 
| West End,
                MT Yellowstone Co. United States | Central Ave. / S 38th St. W (45.76969, -108.61240) | Roundabout Existing | All-Way Yield Pedestrian Hybrid Beacon (PHB, HAWK) | 4 Approaches 0 Driveways 47.2440 | Other (At-Grade) Multilane (2 Lane, 2x1 max) | 2019 | |
| Billings,
                MT Yellowstone Co. United States | King Ave. / Olympic Blvd. (45.75507, -108.61360) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 39.1658 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2008 | Near Kohl's retail shopping center. Previously controlled by one-way stop Functional Class: Arterial ICD estimated from Google Maps linework. | 
| Billings,
                MT Yellowstone Co. United States | Shiloh Crossing Blvd. / Olympic Blvd. (45.75216, -108.61570) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 34.1677 | Other (At-Grade) Single-Lane | 2009 | Functional Class: Local ICD estimated from Google Maps linework. | 
| Billings,
                MT Yellowstone Co. United States | Shiloh Rd. / Hesper Rd. (45.74060, -108.61740) | Roundabout Existing | Unknown Unknown | 4 Approaches 0 Driveways 43.3436 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2009 | Series of 8 roundabouts. Functional Class: Principal Arterial ICD estimated from Google Maps linework. | 
| Billings,
                MT Yellowstone Co. United States | Shiloh Rd. / Zoo Dr. (45.73609, -108.61740) | Roundabout Existing | All-Way Yield Unknown | 4 Approaches 0 Driveways 41.6799 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2009 | Series of 8 roundabouts. Previously controlled by two-way stop Functional Class: Principal Arterial ICD estimated from Google Maps linework. | 
| Billings,
                MT Yellowstone Co. United States | Shiloh Rd. / (Local Access) (45.74776, -108.61750) | Roundabout Existing | All-Way Yield Unknown | 4 Approaches 0 Driveways 37.5041 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2010 | Series of 8 roundabouts. Main access to construction materials facility (600+ trucks per day). Previously controlled by two-way stop Functional Class: Principal Arterial ICD estimated from Google Maps linework. | 
| Billings,
                MT Yellowstone Co. United States | Shiloh Rd. / Grand Ave. (45.78407, -108.61760) | Roundabout Existing | All-Way Yield Unknown | 4 Approaches 0 Driveways 39.1455 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2009 | Series of 8 roundabouts. Fatal crash 2012. 11861-05. Functional Class: Principal Arterial ICD estimated from Google Maps linework. | 
| Billings,
                MT Yellowstone Co. United States | Shiloh Rd. / Broadwater Ave. (45.77685, -108.61760) | Roundabout Existing | All-Way Yield Unknown | 4 Approaches 0 Driveways 44.9815 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2009 | Series of 8 roundabouts. Functional Class: Principal Arterial ICD estimated from Google Maps linework. | 
| Billings,
                MT Yellowstone Co. United States | Shiloh Rd. / Central Ave. (45.76963, -108.61760) | Roundabout Existing | All-Way Yield Unknown | 4 Approaches 0 Driveways 53.3183 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2010 | Series of 8 roundabouts. Functional Class: Principal Arterial ICD estimated from Google Maps linework. | 
| Billings,
                MT Yellowstone Co. United States | Shiloh Rd. / Monad Rd. (45.76236, -108.61760) | Roundabout Existing | All-Way Yield Unknown | 4 Approaches 0 Driveways 46.6596 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2010 | Series of 8 roundabouts. Previously controlled by two-way stop Functional Class: Principal Arterial ICD estimated from Google Maps linework. | 
| Billings,
                MT Yellowstone Co. United States | Shiloh Rd. / King Ave. (45.75507, -108.61760) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 58.3321 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2010 | Series of 8 roundabouts. Functional Class: Principal Arterial ICD estimated from Google Maps linework. | 
| Billings,
                MT Yellowstone Co. United States | Henry Chapple St. / St Vincent Way (45.75948, -108.61935) | Roundabout Existing | All-Way Yield Unknown | 4 Approaches 0 Driveways 36.6630 | Other (At-Grade) Single-Lane | 2013 | One approach stubbed out. ICD estimated from Google Maps linework. | 
| Billings,
                MT Yellowstone Co. United States | St Mary Way / Marillac St. / Henry Chapple St. (45.75672, -108.62191) | Roundabout Existing | All-Way Yield Unknown | 4 Approaches 0 Driveways 39.9980 | Other (At-Grade) Single-Lane | 2013 | One approach stubbed out. ICD estimated from Google Maps linework. | 
| Billings,
                MT Yellowstone Co. United States | King Ave. / St. Vincent Way (45.75520, -108.62260) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 39.9990 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2009 | Previously controlled by two-way stop Functional Class: Principal Arterial ICD estimated from Google Maps linework. | 
| Grand Junction,
                CO Mesa Co. United States | G Rd. / 23rd Rd. (39.10632, -108.62669) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways | Other (At-Grade) Single-Lane | 2011 | Specifically designed for over-length, WB-110 trucks. | 
| Grand Junction,
                CO Mesa Co. United States | Broadway / Redlands Pkwy. (39.07812, -108.63467) | Roundabout Existing | All-Way Yield Unknown | 4 Approaches 0 Driveways 41.7214 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2018 | ICD estimated from Google Maps linework. | 
| Billings,
                MT Yellowstone Co. United States | King Ave. W / S 56th St. W (45.75516, -108.65895) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-Lane | 2022 | https://www.yourbigsky.com/local-news-2/billings-king-ave-56th-st-w-reopened/ | 
| Billings,
                MT Yellowstone Co. United States | Central Ave. / 56th St. W (45.76970, -108.65917) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-Lane | 2022 | https://www.mdt.mt.gov/pubinvolve/56thRoundabouts/ | 
| Billings,
                MT Yellowstone County United States | Rimrock Rd. / 62nd St. W (45.79864, -108.67362) | Roundabout Existing | All-Way Yield Unknown | 4 Approaches 0 Driveways 39.6240 | Other (At-Grade) Single-Lane | 2024 | https://www.facebook.com/trailnetbillings/photos/top-the-roundabout-at-rimrock-and-62nd-street-west-above-heading-east-on-rimrock/1087984726704259/?_rdr | 
| Billings,
                MT Yellowstone Co. United States | Ironwood Dr. / Woodcreek Dr. (45.81641, -108.67716) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 39.6240 | Other (At-Grade) Single-Lane | 2003 | |
| Fruita,
                CO Mesa Co. United States | Aspen Ave. / Mesa St. (Park Square) (39.15884, -108.73360) | Other Existing | Unknown Unknown | 0 Approaches 0 Driveways 77.7908 | Other (At-Grade) Unknown | Completed 1940? ICD estimated from Google Maps linework. | |
| Fruita,
                CO Mesa Co. United States | CO-340 / I-70 EB Ramps / I-70 Frontage Rd. (39.15470, -108.73769) | Roundabout Existing | All-Way Yield Active Pedestrian Warning (flashing yellow) | 4 Approaches 0 Driveways 40.7499 | Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified) | 2009 | ICD estimated from Google Maps linework. | 
| Fruita,
                CO Mesa Co. United States | CO-340 / Raptor Rd. (39.15351, -108.73813) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 47.2337 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2009 | ICD estimated from Google Maps linework. | 
| Red Lodge,
                MT Carbon Co. United States | US 212 (Broadway Ave.) / 3rd St. (45.19487, -109.24681) | Roundabout Existing | All-Way Yield Unknown | 4 Approaches 0 Driveways 40.3987 | Other (At-Grade) Single-Lane | 2015 | ICD estimated from Google Maps linework. | 
| Chinle,
                AZ Apache Co. United States | Navajo Rte 27 / Navajo Rte 7 (36.15072, -109.55430) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 0.0000 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2021 | https://www.nhonews.com/news/2021/jan/19/11-miles-navajo-route-27-paved-between-chinle-and-/ | 
| Maeser,
                UT Uintah Co. United States | Main St. / Aggie Blvd. (40.45562, -109.56693) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 54.8640 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2009 | Year Completed estimated (2009-2011). | 
| Burnside,
                AZ Apache Co. United States | US 191 / AZ 264 (35.75473, -109.62710) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 54.8640 | Other (At-Grade) Single-Lane | 2009 | Right-turn bypass lane. Elliptical shaped. ICE = 180 ft x 160 ft. | 
| Safford,
                AZ Graham Co. United States | N 8th Ave. / Safford Bryce Rd. / Airport Rd. (32.85769, -109.71607) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-Lane | 2020 | https://gilaherald.com/graham-county-roundabout-working-well/ | 
| Thatcher,
                AZ Graham Co. United States | W Church St. / N High School Ave. (32.84581, -109.75898) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-Lane | 2020 | https://gilaherald.com/church-street-roundabout-open-for-business/ | 
| Thatcher,
                AZ Graham Co. United States | W Golf Course Rd. / Hoopes Ave. / S Robinson Ave. (32.80760, -109.76289) | Roundabout Existing | All-Way Yield None | 5 Approaches 0 Driveways 62.2373 | Other (At-Grade) Single-Lane | 2017 | http://leagueaz.org/connection/2018/0218/thatcher.html ICD estimated from Google Maps linework. | 
| Bisbee,
                AZ Cochise Co. United States | Bisbee Rd. / SR 80 / SR 92 (31.42830, -109.89230) | Rotary Existing | All-Way Yield None | 4 Approaches 0 Driveways 104.9686 | Other (At-Grade) Single-Lane | ICD estimated from Google Maps linework. | |
| Show Low,
                AZ Navajo Co. United States | S Summit Trl. / (parking) (34.23113, -110.06795) | Other Existing | All-Way Yield None | 4 Approaches 0 Driveways 39.6240 | Other (At-Grade) Single-Lane | 2007 | No splitter islands on two legs, and diverging double yellow lines on two legs. | 
| Show Low,
                AZ Navajo Co. United States | S Summit Trl. / Falling Leaf Rd. (34.23781, -110.07255) | Other Existing | All-Way Yield None | 4 Approaches 0 Driveways 39.6240 | Other (At-Grade) Single-Lane | 2007 | No splitter islands on two legs, and diverging double yellow lines on two legs. | 
| Show Low,
                AZ Navajo Co. United States | S Summit Trl. / W Sugar Pine Way / Spirea Ln. (34.24039, -110.07928) | Other Existing | All-Way Yield None | 4 Approaches 0 Driveways 31.0896 | Other (At-Grade) Single-Lane | 2007 | No splitter islands on two legs, and diverging double yellow lines on two legs. | 
| Show Low,
                AZ Navajo Co. United States | W Sugar Pine Way / S Torreon Loop (34.24261, -110.08372) | Other Existing | Unknown Unknown | 3 Approaches 1 Driveways 39.6240 | Other (At-Grade) Single-Lane | 2007 | No splitter islands on two legs. One leg of the intersection is a private community access point. | 
| Oljato-Monument Valley,
                UT San Juan Co. United States | US 163 / Monument Valley Rd. (37.00424, -110.17341) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-Lane | 2019 | https://www.nhonews.com/news/2018/jun/19/oljato-community-breaks-ground-roundabout-road-nav/ | 
| Sierra Vista,
                AZ Cochise Co. United States | E Golden Acres Dr. / Canyon de Flores (31.50212, -110.25097) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 60.9600 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2014 | ADOT truck turnaround. Year Completed estimated (2013-2015). | 
| Sierra Vista,
                AZ Cochise Co. United States | Jeffords St. / Cushing St. (31.55698, -110.33997) | Other Existing | All-Way Stop None | 4 Approaches 0 Driveways 37.7952 | Other (At-Grade) Single-Lane | 2010 | Stop line at each entry. Pedestrian crossings within circulatory roadway. | 
| Sierra Vista,
                AZ Cochise Co. United States | Rucker St. / Cooney St. / Jeffords St. (31.55599, -110.34628) | Other Existing | All-Way Stop None | 4 Approaches 0 Driveways 36.5760 | Other (At-Grade) Single-Lane | 2010 | Stop line at each entry. Pedestrian crossings within circulatory roadway. | 
| Sierra Vista,
                AZ Cochise Co. United States | Derum St. / Rucker St. / Smith Ave. / Winrow Rd. (31.55118, -110.34837) | Rotary Existing | All-Way Yield None | 4 Approaches 0 Driveways 60.9600 | Other (At-Grade) Single-Lane | 2011 | On base of Fort Huachuca. No truck apron. | 
| Sierra Vista,
                AZ Cochise Co. United States | Smith Ave. / Winrow Ave. / Cushing St. (31.55504, -110.36013) | Rotary Existing | All-Way Yield None | 4 Approaches 0 Driveways 60.9600 | Other (At-Grade) Single-Lane | 1992 | On base of Fort Huachuca. No truck apron. Very little speed control on east leg. Year Completed estimated (1985-1992). | 
| Bonnyville No 87,
                AB Alberta Canada | AB Hwy 55 / AB Hwy 892 (54.45699, -110.48469) | Roundabout Existing | All-Way Yield Unknown | 4 Approaches 0 Driveways 43.0454 | Other (At-Grade) Single-Lane | 2012 | ICD estimated from Google Maps linework. | 
| Medicine Hat,
                AB Division 1 Canada | College Dr. SE / (parking) (50.01817, -110.68204) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 34.0000 | Other (At-Grade) Single-Lane | 2007 | Year Completed estimated (2005-2009). | 
| Medicine Hat,
                AB Division 1 Canada | 2 Ave. SE / 8 St. SE (50.03145, -110.68217) | Roundabout Existing | All-Way Yield Unknown | 4 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-lane w/ Traversable Central Island | 2024 | https://medicinehatnews.com/news/local-news/2024/10/04/hurry-before-the-snow-city-road-construction-nears-finish-line-as-fall-weather-arrives/ | 
| Medicine Hat,
                AB Division 1 Canada | College Dr. / College Dr. (50.01654, -110.68389) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 35.0000 | Other (At-Grade) Single-Lane | 2008 | Year Completed estimated (2005-2010). | 
| Jackson,
                WY Teton Co. United States | US 89 / US 191 (43.32233, -110.73067) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 38.2307 | Other (At-Grade) Single-Lane | 2012 | Year Completed estimated (2009-2013). ICD estimated from Google Maps linework. | 
| Jackson,
                WY Teton Co. United States | Gros Ventre Junction (US-26 / US 89 / US 191 / Golf Course Rd / Gros Ventre Rd) (43.57420, -110.73327) | Roundabout Existing | All-Way Yield Unknown | 4 Approaches 0 Driveways 38.9371 | Other (At-Grade) Single-Lane | 2018 | Under construction summer 2018. https://www.nps.gov/grte/planyourvisit/gros-ventre-roundabout.htm The Gros Ventre intersection on US Hwy 26/89/191 has an average daily traffic volume of approximately 14,200 vehicles and almost 200 bicycle riders during the summer season. ICD estimated from Google Maps linework. | 
| Tucson,
                AZ Pima Co. United States | E Southpoint Rd. / S McRae Pl. (32.14260, -110.84237) | Other Existing | Unknown Unknown | 3 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-Lane | Speed bumps in circulatory roadway. | |
| Tucson,
                AZ Pima Co. United States | Kolb Rd. / E Territory Dr. (32.30652, -110.84391) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 36.5760 | Other (At-Grade) Single-Lane | 2022 | Metal art in central island. | 
| Tucson,
                AZ Pima Co. United States | E Southpoint Rd. / S McCulloch Dr. (32.14076, -110.84515) | Other Existing | Unknown Unknown | 4 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-Lane | Speed bumps in circulatory roadway. | |
| Tucson,
                AZ Pima Co. United States | E Outlook Dr. / S McCulloch Dr. (32.14387, -110.84575) | Other Existing | Unknown Unknown | 2 Approaches 2 Driveways 0.0000 | Other (At-Grade) Single-Lane | Speed bumps in circulatory roadway. | |
| Tucson,
                AZ Pima Co. United States | E Southpoint Rd. /  E Outlook Dr. (32.14272, -110.84836) | Other Existing | Unknown Unknown | 3 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-Lane | Speed bumps in circulatory roadway. | |
| Armington,
                MT Cascade Co. United States | US 87-SR 200 / US 89 / (parking) (47.34909, -110.89673) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-Lane | 2022 | Year Completed estimated (2022-2023). https://www.youtube.com/watch?v=7jSH18jbyKc | 
| Tucson,
                AZ Pima Co. United States | E Tucson Marketplace Blvd. / (parking lot) (32.18277, -110.94868) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 48.5196 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2011 | ICD estimated from Google Maps linework. | 
| Tucson,
                AZ Pima County United States | E 5th St. / N 1st Ave. (32.22907, -110.96099) | Traffic Calming Circle Existing | All-Way Yield Unknown | 4 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-Lane | ||
| Tucson,
                AZ Pima County United States | E 2nd St. / N 1st Ave. (32.23298, -110.96101) | Traffic Calming Circle Existing | All-Way Stop Unknown | 4 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-Lane |