| City, 
                State County Country | Intersection (Lat, Lng) | Type Status | Control Type / Other Control Type | Approaches / Driveways / ICD (m) | Functional Class / LaneType | Year Completed | Comments | 
|---|---|---|---|---|---|---|---|
| Maplewood,
                NJ Essex Co. United States | Midland Blvd. / Norfolk Ave. (40.73111, -74.25972) | Traffic Calming Circle Existing | Unknown Unknown | 4 Approaches 0 Driveways 16.2907 | Other (At-Grade) Single-Lane | ICD estimated from Google Maps linework. | |
| Princeton,
                NJ Mercer Co. United States | Faculty Rd. / Elm Dr. (40.33888, -74.65523) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 28.2209 | Other (At-Grade) Single-Lane | 2001 | This roundabout is on University owned roads open to the public. There is a second roundabout similar in dimensions upstream on Elm Drive. Close to an at-grade rail crossing. Previously controlled by one-way stop Functional Class: Collector ICD estimated from Google Maps linework. | 
| Belmar,
                NJ Monmouth Co. United States | 10th Ave. / B St. (40.17772, -74.01782) | Traffic Calming Circle Existing | Unknown Unknown | 4 Approaches 0 Driveways | Other (At-Grade) Single-Lane | ||
| Belmar,
                NJ Monmouth Co. United States | 10th Ave. / D St. (40.17855, -74.02169) | Traffic Calming Circle Existing | Unknown Unknown | 4 Approaches 0 Driveways | Other (At-Grade) Single-Lane | ||
| Summit,
                NJ Union Co. United States | Union Pl. / Beechwood Rd. (40.71691, -74.35757) | Other Existing | Unknown Unknown | 3 Approaches 0 Driveways 19.0099 | Other (At-Grade) Single-Lane | ICD estimated from Google Maps linework. | |
| Carson City,
                NV Carson City Co. United States | E 5th St. / Fairview Dr. (39.16090, -119.72790) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 33.5280 | Other (At-Grade) Single-Lane | 1999 | |
| Hinesville,
                GA Liberty Co. United States | Washington Ave. / Memorial Dr. (31.84992, -81.59570) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 37.5366 | Other (At-Grade) Single-Lane | 2010 | ICD estimated from Google Maps linework. | 
| Brookfield,
                WI Waukesha Co. United States | Barker Rd. (CTH Y) / North Ave. (CTH M) (43.06136, -88.16629) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 34.9042 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2010 | Functional Class: Arterial ICD estimated from Google Maps linework. | 
| Lakewood,
                CO Jefferson Co. United States | Allison Pkwy. / Civic Center (39.70906, -105.08630) | Roundabout Existing | All-Way Yield None | 5 Approaches 0 Driveways 31.2390 | Other (At-Grade) Single-Lane | 1999 | ICD estimated from Google Maps linework. | 
| Lakewood,
                CO Jefferson Co. United States | Arbutus Dr. / W. 2nd Pl. (39.71649, -105.14750) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 27.5609 | Other (At-Grade) Single-Lane | 2001 | Functional Class: Collector ICD estimated from Google Maps linework. | 
| Coral Gables,
                FL Miami-Dade Co. United States | Ponce de Leon Blvd. / Greco Ave. / Ruiz Ave. (25.73047, -80.25832) | Roundabout Existing | All-Way Yield Unknown | 6 Approaches 0 Driveways 49.4917 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2002 | ICD estimated from Google Maps linework. | 
| Hyannis,
                MA Barnstable Co. United States | Iyannough Rd. / Barnstable Rd. / Falmouth Rd. (41.66512, -70.28732) | Rotary Existing | Unknown Unknown | 0 Approaches 0 Driveways 87.4371 | Other (At-Grade) Unknown | ICD estimated from Google Maps linework. | |
| Greenbelt,
                MD Prince Georges Co. United States | Hanover Pkwy. / Village Park Dr. / Schrom Hills Community Park entrance (38.98378, -76.87333) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 19.4960 | Other (At-Grade) Single-Lane | 1998 | Year Completed estimated (1994-2001). ICD estimated from Google Maps linework. | 
| Superior,
                CO Boulder Co. United States | 5th Ave. / Center Dr. (39.95764, -105.17190) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 31.1262 | Other (At-Grade) Single-Lane | 1999 | Serves Costco and Target as part of 750,000 square foot shopping center. Functional Class: Local 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. | 
| Henrietta,
                NY Monroe Co. United States | Andrews Memorial Dr. / Lomb Memorial Dr. (43.08770, -77.67448) | Roundabout Existing | Unknown Unknown | 4 Approaches 0 Driveways 35.7614 | Other (At-Grade) Single-Lane | 2003 | On campus of Rochester Institute of Technology. ICD estimated from Google Maps linework. | 
| Linton Hall,
                VA Prince William Co. United States | Tartan Hills Pkwy. / Native Rocks Dr. / Seagate Way (38.74593, -77.58755) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 38.1911 | Other (At-Grade) Single-Lane | 2004 | ICD estimated from Google Maps linework. | 
| Parkville,
                MO Platte Co. United States | National Dr. / Ridge Rd. (39.21333, -94.70781) | Other Existing | Unknown Unknown | 3 Approaches 0 Driveways 49.9696 | Other (At-Grade) Single-Lane | Functional Class: Local ICD estimated from Google Maps linework. | |
| Portsmouth,
                VA N/A Co. United States | Crawford St. / Bart St. (36.83202, -76.29770) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 45.8849 | Other (At-Grade) Single-Lane | 2007 | ICD estimated from Google Maps linework. | 
| Colorado Springs,
                CO El Paso Co. United States | Chapel Hills Dr. / Divot Trl. (38.97569, -104.77560) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 29.7116 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2002 | Functional Class: Arterial ICD estimated from Google Maps linework. | 
| Boulder,
                CO Boulder Co. United States | St. Johns St. / New Haven Ct. (Hampton Circle) (40.04742, -105.24740) | Roundabout Existing | Unknown Unknown | 4 Approaches 0 Driveways 25.5996 | Other (At-Grade) Single-Lane | 1997 | ICD estimated from Google Maps linework. | 
| 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. | |
| Eagle,
                CO Eagle Co. United States | Eby Creek Rd. / US 6 (39.65630, -106.82500) | Roundabout Existing | All-Way Yield Active Pedestrian Warning (flashing yellow) | 4 Approaches 0 Driveways 40.4579 | Other (At-Grade) Single-Lane | 2001 | Opened July 2001. Highway ref pt. 6-49.67. Previously controlled by two-way stop Functional Class: Arterial ICD estimated from Google Maps linework. | 
| Winchester,
                VA Frederick Co. United States | Commonwealth Ct. / (parking lot) (39.12518, -78.19009) | Roundabout Existing | Unknown Unknown | 4 Approaches 0 Driveways 28.7222 | Other (At-Grade) Single-Lane | 2007 | ICD estimated from Google Maps linework. | 
| Gypsum,
                CO Eagle Co. United States | I-70 Frontage Roads / US 6 (39.65086, -106.95510) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 53.3351 | Other (At-Grade) Single-Lane | 2004 | ICD estimated from Google Maps linework. | 
| Swinomish Tribal Community,
                WA Skagit Co. United States | SR 20 / Padilla Heights Rd. (48.45519, -122.51940) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 37.2280 | Other (At-Grade) Single-Lane | 2002 | The ground breaking ceremony was held October 2002. The client is the Swinomish Tribe. Opened October 2002. Functional Class: Local ICD estimated from Google Maps linework. | 
| La Conner,
                WA Skagit Co. United States | LaConner-Whitney Rd. / Chilberg Rd. / Morris Sr. (48.39234, -122.48660) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 28.5504 | Other (At-Grade) Single-Lane | 2003 | Roundabout replaces a Y intersection. The center island is under private ownership and contains an exisitng granite monument. Opened September 2003. Previously controlled by one-way stop Functional Class: Arterial ICD estimated from Google Maps linework. | 
| New London,
                CT New London Co. United States | Shaw St. / Pequot Ave. / Nameaug St. / Driveway to Pfizer (41.34204, -72.09873) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 35.8671 | Other (At-Grade) Single-Lane | 2000 | Functional Class: Collector ICD estimated from Google Maps linework. | 
| Indianapolis,
                IN Marion Co. United States | Monument Circle [Market St. / Meridian St.] (39.76848, -86.15804) | Other Existing | Unknown Unknown | 4 Approaches 0 Driveways 36.5760 | Other (At-Grade) Multilane (2 Lane, unspecified) | 1820 | Most famous traffic circle in the State of Indiana. Completed 1820. | 
| Carmel,
                IN Hamilton Co. United States | Hazel Dell Pkwy. / E 126th St. (39.97119, -86.07069) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 48.7680 | Other (At-Grade) Multilane (2 Lane, 2x2 max) | 1998 | |
| Carmel,
                IN Hamilton Co. United States | Hazel Dell Pkwy. / E 131st St. (39.97845, -86.07054) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 48.7680 | Other (At-Grade) Multilane (2 Lane, 2x2 max) | 1998 | Built in late 1990s.Converted to multilane 2010-2012. Right-turn-only lane on west leg; left-turn-only lane on east leg. | 
| Carson City,
                NV Carson City Co. United States | Arrowhead Dr. / I-580 SB Ramp (39.19810, -119.77540) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 27.7669 | Freeway Ramps (Grade-Separated) Single-Lane | 2002 | Future SB on-ramp for Carson City Freeway (I-580). Overpass and roundabouts completed in 2002; freeway ramps completed ~2005. ICD estimated from Google Maps linework. | 
| Carson City,
                NV Carson City Co. United States | Arrowhead Dr. / I-580 NB Ramps / Imus Rd. (39.19840, -119.77380) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 28.6923 | Freeway Ramps (Grade-Separated) Single-Lane | 2002 | NB off-ramp for Carson City Freeway (I-580) and extension of Imus Road. Overpass and roundabouts completed in 2002. ICD estimated from Google Maps linework. | 
| Medford,
                MN Steele Co. United States | CR 12 / I-35 NB Ramps (44.17349, -93.25775) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 43.6872 | Other (At-Grade) Single-Lane | 2002 | Previously controlled by one-way stop Functional Class: Collector ICD estimated from Google Maps linework. | 
| East Lansing,
                MI Ingham Co. United States | Wilson Rd. / Red Cedar Rd. (42.72324, -84.48238) | Other Removed | Unknown Unknown | 4 Approaches 0 Driveways 23.6898 | Other (At-Grade) Unknown | ICD estimated from Google Maps linework. | |
| Sherwood,
                OR Washington Co. United States | SW Oregon St. / SW Murdock Rd. (45.36060, -122.82520) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 49.5120 | Other (At-Grade) Single-Lane | 2002 | Completed November 2002. ICD estimated from Google Maps linework. | 
| Erwin,
                NY Steuben Co. United States | Robert Dann Dr. / Science Center Rd. (42.15936, -77.11082) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 53.3400 | Other (At-Grade) Multilane (2 Lane, 2x1 max) | 2001 | Add-lane right-turn bypass lane on west leg. | 
| Somerville,
                NJ Somerset Co. United States | US 206 / US 202 Ramps / NJ 28 / West End Ave. (40.57572, -74.62894) | Rotary Existing | Other Unknown | 5 Approaches 0 Driveways 144.7800 | Other (At-Grade) Multilane (3+ Lane) | Circulating traffic yields (stops) for entering traffic on northeast leg. ICD = 475 ft x 350 ft. | |
| East Lansing,
                MI Ingham Co. United States | Bogue St. / Wilson Rd. (42.72326, -84.47186) | Other Removed | Unknown Unknown | 4 Approaches 0 Driveways 36.8508 | Other (At-Grade) Unknown | ICD estimated from Google Maps linework. | |
| Hilton Head,
                SC Beaufort Co. United States | US 278 / Pope Ave. / Greenwood Dr. / William Hilton Pkwy. (32.15560, -80.76283) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 91.0011 | Other (At-Grade) Single-Lane | 2000 | Converted rotary with large diameter. Right turn bypass lanes on all legs. Conversion Year Completed estimated (1994-2005). ICD estimated from Google Maps linework. | 
| Carmel,
                IN Hamilton Co. United States | River Rd. / East 131st St. / Longest Dr. (39.97910, -86.05145) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 79.2480 | Other (At-Grade) Single-Lane | 1997 | First roundabout in Carmel. | 
| Carmel,
                IN Hamilton Co. United States | Gray Rd. / 106th St. (39.94151, -86.08847) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 36.6277 | Other (At-Grade) Single-Lane | 2003 | Under construction in December 2002; completed January 2003. Intersection closed until completion. Construction cost $430,000 per Indianapolis Star article authored by Bill Ruthhart (12/05/2002). Functional Class: Arterial ICD estimated from Google Maps linework. | 
| Carmel,
                IN Hamilton Co. United States | Spring Mill Rd. / W. 131st St. (39.97776, -86.16474) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 40.2691 | Other (At-Grade) Single-Lane | 2007 | Construction planned for Spring 2003 per article in The Indianapolis Star (12/05/2002). Functional Class: Arterial ICD estimated from Google Maps linework. | 
| Carmel,
                IN Hamilton Co. United States | Spring Mill Rd. / W. 136th St. (39.98505, -86.16485) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 35.6893 | Other (At-Grade) Single-Lane | 2005 | Construction planned for Spring 2003 per article in The Indianapolis Star (12/05/2002). Functional Class: Arterial ICD estimated from Google Maps linework. | 
| Carmel,
                IN Hamilton Co. United States | Old Meridian St. / Pennsylvania St. (39.96796, -86.15526) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 60.9600 | Other (At-Grade) Multilane (2 Lane, 2x2 max) | 2008 | |
| Carmel,
                IN Hamilton Co. United States | Old Meridian St. / 131st (Main) St. (39.97806, -86.14577) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 60.9600 | Other (At-Grade) Multilane (2 Lane, 2x1 max) | 2007 | Painted spirals next to central island. Skewed intersection. | 
| Bettendorf,
                IA Scott Co. United States | 53rd Ave. / Middle Rd. (41.57538, -90.46408) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 37.5252 | Other (At-Grade) Single-Lane | 2002 | Right turn bypass lanes striped within roundabout. Construction cost ~$865,000. Information from website: http://www.bettendorf.lib.ia.us/publicworks/roundabout.html ICD estimated from Google Maps linework. | 
| Johnson City,
                NY Broome Co. United States | Riverside Dr. / Floral Ave. / Rte 201 Ramps (42.10678, -75.96601) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 60.9600 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2005 | http://www.dot.state.ny.us/reg/r9/cur_project/circle/about/index.html | 
| Raleigh,
                NC Wake Co. United States | Pullen Rd. / Stinson Dr. (35.78457, -78.66421) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 19.3773 | Other (At-Grade) Single-Lane | 2002 | Located on campus of North Carolina State University. Completed November 2002. Used to have Pedestrian signal located upstream of roundabout (removed in 2006) Previously controlled by one-way stop Functional Class: Local ICD estimated from Google Maps linework. | 
| Lenexa,
                KS Johnson Co. United States | 67th St. / Gleason Rd. (39.00723, -94.86295) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 34.3387 | Other (At-Grade) Single-Lane | 2002 | Built as part of extension of both streets -- road originally curved from the north to the east. Completed October 2002. Functional Class: Collector ICD estimated from Google Maps linework. | 
| Colorado Springs,
                CO El Paso Co. United States | Chapel Hills Dr. / Royal Pine Dr. (38.98067, -104.77060) | Roundabout Existing | Unknown Unknown | 4 Approaches 0 Driveways 26.9242 | Other (At-Grade) Single-Lane | 2002 | ICD estimated from Google Maps linework. | 
| Reno,
                NV Washoe Co. United States | Wedekind Rd. / Clear Acre Ln. (39.55157, -119.78930) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 23.0222 | Other (At-Grade) Single-Lane | 1999 | Previously controlled by two-way stop ICD estimated from Google Maps linework. | 
| Lake Oswego,
                OR Clackamas Co. United States | SW Stafford Rd. / SW Rosemont Rd. (45.39300, -122.69020) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 42.7740 | Other (At-Grade) Single-Lane | 2005 | ICD estimated from Google Maps linework. | 
| (unincorporated),
                OR Clackamas Co. United States | SW Stafford Rd. / SW Borland Rd. (45.37472, -122.70240) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 53.6945 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2008 | ICD estimated from Google Maps linework. | 
| Urbana,
                MD Frederick Co. United States | Bennett Creek Ave. / Bennett Creek Blvd. (39.32256, -77.34935) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 37.8808 | Other (At-Grade) Single-Lane | 2000 | ICD estimated from Google Maps linework. | 
| Chattanooga,
                TN Hamilton Co. United States | US 41 - US 76 - SR 8 (Westside Dr.) / 29th St. (35.00944, -85.27164) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 21.5209 | Other (At-Grade) Single-Lane | 2001 | Completed September 26, 2001. The intersection is located at the western portal of the Bachman Tunnel, a two-lane tunnel through Missionary Ridge, connecting Chattanooga with the City of East Ridge, Tennessee. Previously controlled by two-way stop Functional Class: Arterial ICD estimated from Google Maps linework. | 
| Williston,
                VT Chittenden Co. United States | Maple Tree Pl. / Sycamore Dr. (44.44349, -73.10966) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 22.1697 | Other (At-Grade) Single-Lane | 2001 | Completed November 2001. Major shopping area, road part of the planned ring road around Taft Corner. Functional Class: Local ICD estimated from Google Maps linework. | 
| Bend,
                OR Deschutes Co. United States | SW Industrial Way / SW Wall St. (44.05050, -121.31750) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 30.9023 | Other (At-Grade) Single-Lane | 2003 | Wall St. is one-way southbound into the roundabout. Roundabout is raindrop-shaped to prevent eastbound to northbound movements. Dogbone/peanut shape. ICD estimated from Google Maps linework. | 
| Bend,
                OR Deschutes Co. United States | SW Industrial Way / SW Bond St. (44.05040, -121.31630) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 32.6191 | Other (At-Grade) Single-Lane | 2003 | Bond St. is one-way northbound out of the roundabout. Roundabout has raindrop-shaped central island, as no westbound to southbound movements are needed. Dogbone/peanut shape. ICD estimated from Google Maps linework. | 
| Colorado Springs,
                CO El Paso Co. United States | Beech Ave. / 1st St. (38.79048, -104.84660) | Other Existing | Unknown Unknown | 4 Approaches 0 Driveways 42.8219 | Other (At-Grade) Single-Lane | ICD estimated from Google Maps linework. | |
| Colorado Springs,
                CO El Paso Co. United States | Lake Ave. / Lake Cir. (38.79144, -104.84880) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 23.2724 | Other (At-Grade) Single-Lane | 1995 | Year Completed estimated (before 1999). ICD estimated from Google Maps linework. | 
| The Villages,
                FL Sumter Co. United States | Buena Vista Blvd. / Rainey Tr. (28.91345, -81.99847) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 53.3183 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2003 | ICD estimated from Google Maps linework. | 
| Fort Collins,
                CO Larimer Co. United States | Rigden Pkwy. / Custer Dr. (40.54863, -105.02960) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 39.9307 | Other (At-Grade) Single-Lane | 2001 | Date estimated. Functional Class: Local ICD estimated from Google Maps linework. | 
| Fort Collins,
                CO Larimer Co. United States | Stanton Creek Dr. / St. Thomas Dr. (40.49066, -105.05590) | Traffic Calming Circle Existing | Unknown Unknown | 4 Approaches 0 Driveways 24.5241 | Other (At-Grade) Single-Lane | Functional Class: Local ICD estimated from Google Maps linework. | |
| Fort Collins,
                CO Larimer Co. United States | Stanton Creek Dr. / Tortola Way (40.48999, -105.05430) | Traffic Calming Circle Existing | Unknown Unknown | 3 Approaches 0 Driveways 25.4327 | Other (At-Grade) Single-Lane | Functional Class: Local ICD estimated from Google Maps linework. | |
| Fort Collins,
                CO Larimer Co. United States | Cuerto Ln. / (unknown) (40.57718, -105.13330) | Roundabout Existing | Unknown Unknown | 4 Approaches 0 Driveways 26.3067 | Other (At-Grade) Single-Lane | 2005 | Functional Class: Local ICD estimated from Google Maps linework. | 
| Fort Collins,
                CO Larimer Co. United States | Tierra Ln. / Saddle Ridge Condominiums (40.57545, -105.13140) | Traffic Calming Circle Existing | Unknown Unknown | 4 Approaches 0 Driveways 28.1217 | Other (At-Grade) Single-Lane | Functional Class: Local ICD estimated from Google Maps linework. | |
| Fort Collins,
                CO Larimer Co. United States | Oval Dr. (Howes St. / Plum St. / Isotope Dr. / East Dr. / Music Dr.) (40.57639, -105.08070) | Other Existing | Unknown Unknown | 6 Approaches 0 Driveways 19.0499 | Other (At-Grade) Single-Lane | Functional Class: Local ICD estimated from Google Maps linework. | |
| Fort Collins,
                CO Larimer Co. United States | College Ave. / Laporte Ave. (40.58899, -105.07720) | Other Removed | Unknown Unknown | 4 Approaches 0 Driveways 26.3021 | Other (At-Grade) Multilane (2 Lane, unspecified) | Functional Class: Arterial ICD estimated from Google Maps linework. | |
| Loveland,
                CO Larimer Co. United States | Glen Isle Dr. / Glendale Dr. (40.43433, -105.11460) | Other Existing | All-Way Yield Unknown | 4 Approaches 0 Driveways 27.4320 | Other (At-Grade) Single-Lane | 1995 | No splitter islands on side street. | 
| Loveland,
                CO Larimer Co. United States | Glen Isle Dr. / Buckingham Cir. (40.43580, -105.10680) | Roundabout Existing | Unknown Unknown | 4 Approaches 0 Driveways 64.5421 | Other (At-Grade) Single-Lane | 1997 | Functional Class: Local ICD estimated from Google Maps linework. | 
| Loveland,
                CO Larimer Co. United States | Seven Lakes Dr. / Horseshoe Dr. (40.42844, -105.05100) | Roundabout Existing | Unknown Unknown | 4 Approaches 0 Driveways 20.0011 | Other (At-Grade) Single-Lane | 1996 | Functional Class: Local ICD estimated from Google Maps linework. | 
| Loveland,
                CO Larimer Co. United States | Seven Lakes Dr. / Madison Ave. (40.42698, -105.05790) | Roundabout Existing | Unknown Unknown | 3 Approaches 0 Driveways 18.1832 | Other (At-Grade) Single-Lane | 1995 | Functional Class: Local ICD estimated from Google Maps linework. | 
| Loveland,
                CO Larimer Co. United States | E. 13th St. / N. Denver Ave. (40.40520, -105.04480) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 42.7445 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2002 | Southbound approach has two-lane approach with right-turn-only lane; all other approaches are single-lane. Traffic from SuperWalMart and movie theatre go through roundabout to get to NB Denver to get to US 34/Eisenhower. Functional Class: Collector ICD estimated from Google Maps linework. | 
| Fort Collins,
                CO Larimer Co. United States | Silverwood Dr. / Centennial Rd. (40.54545, -105.05120) | Traffic Calming Circle Removed | All-Way Yield None | 4 Approaches 0 Driveways 31.7646 | Other (At-Grade) Single-Lane | Small almost mini-roundabout used for traffic calming measure. People drove through plastic posts, rendering roundabout useless; idea scrapped in less than 6 mo. Functional Class: Collector ICD estimated from Google Maps linework. | |
| Fort Collins,
                CO Larimer Co. United States | Mt. Vernon Ct. / New Bedford Dr. / Ticonderoga Dr. (40.53008, -105.05420) | Traffic Calming Circle Existing | Unknown Unknown | 4 Approaches 0 Driveways 25.4175 | Other (At-Grade) Single-Lane | Small almost mini roundabout, not very functional. Has small central island and no splitter islands only haching and road markings. Functional Class: Collector ICD estimated from Google Maps linework. | |
| Urbana,
                MD Frederick Co. United States | Bennett Creek Ave. / Bennett Creek Rd. (39.32223, -77.35181) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 33.2613 | Other (At-Grade) Single-Lane | 2000 | ICD estimated from Google Maps linework. | 
| Colorado Springs,
                CO El Paso Co. United States | Pine Manor Dr. / Stoneglen Dr. (38.96827, -104.76670) | Roundabout Existing | Unknown Unknown | 4 Approaches 0 Driveways 26.9289 | Other (At-Grade) Single-Lane | 2000 | ICD estimated from Google Maps linework. | 
| Sanford,
                FL Seminole Co. United States | E Seminole Blvd. / N Park Ave. (28.81465, -81.26805) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 25.9080 | Other (At-Grade) Single-Lane | 2004 | Painted splitter islands on all legs. Year Completed estimated (2003-2004). | 
| Denver,
                CO Denver Co. United States | Chopper Cir. / VIP Parking / 9th St. / Access Rd (39.74721, -105.00810) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 52.3424 | Other (At-Grade) Single-Lane | 1999 | Located at Pepsi Center arena Functional Class: Collector ICD estimated from Google Maps linework. | 
| Urbana,
                MD Frederick Co. United States | MD 355 / Sugarloaf Pkwy. (39.32862, -77.35193) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 38.8013 | Other (At-Grade) Single-Lane | 2000 | ICD estimated from Google Maps linework. | 
| Colorado Springs,
                CO El Paso Co. United States | Windjammer Dr. / Brigantine Dr. (38.95401, -104.77020) | Roundabout Existing | Unknown Unknown | 4 Approaches 0 Driveways 32.5070 | Other (At-Grade) Single-Lane | 1995 | ICD estimated from Google Maps linework. | 
| Oshkosh,
                WI Winnebago Co. United States | CTH E (Witzel Ave.) / Washburn St. (44.01808, -88.58321) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 50.2920 | Other (At-Grade) Multilane (2 Lane, 2x2 max) | 2010 | Opened September 24, 2010. | 
| Urbana,
                MD Frederick Co. United States | MD 355 / Sprigg St. (39.33070, -77.35654) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 42.4954 | Other (At-Grade) Single-Lane | 2000 | ICD estimated from Google Maps linework. | 
| Urbana,
                MD Frederick Co. United States | Bush Creek Dr. / Major Smith Ln. (39.33507, -77.35263) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 28.6364 | Other (At-Grade) Single-Lane | 2000 | ICD estimated from Google Maps linework. | 
| Encinitas,
                CA San Diego Co. United States | Santa Fe Dr. / Devonshire Dr. / Rubenstein Ave. (33.03622, -117.28590) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 22.0272 | Other (At-Grade) Single-Lane | 2004 | Site of solo fatal crash in 2007, DUI .29%. http://www.nctimes.com/articles/2007/10/09/news/coastal/2_03_3710_8_07.txt. 11861-05. Previously controlled by two-way stop Functional Class: Collector ICD estimated from Google Maps linework. | 
| Federal Way,
                WA King Co. United States | S 323rd St. / 32nd Ave. S (47.31214, -122.29250) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 44.5368 | Other (At-Grade) Single-Lane | 2000 | Opened April 2000. ICD estimated from Google Maps linework. | 
| Modesto,
                CA Stanislaus Co. United States | Sylvan Ave. / Millbrook Ave. (37.68898, -120.93520) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 45.3658 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2006 | Previously controlled by one-way stop Functional Class: Arterial ICD estimated from Google Maps linework. | 
| Chico,
                CA Butte Co. United States | W. 8th Ave. / Magnolia Ave. (39.74451, -121.85270) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 25.7130 | Other (At-Grade) Single-Lane | 2005 | Functional Class: Local ICD estimated from Google Maps linework. | 
| Modesto,
                CA Stanislaus Co. United States | Sharon Ave. / Maid Mariane Rd. (37.67451, -120.93050) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 20.7967 | Other (At-Grade) Single-Lane | 2006 | Opened July 27, 2006. Functional Class: Collector ICD estimated from Google Maps linework. | 
| West Bend,
                WI Washington Co. United States | Paradise Dr. / CTH G (43.39770, -88.16100) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 29.5053 | Other (At-Grade) Single-Lane | 2003 | Completed September 18, 2003 Previously controlled by two-way stop Functional Class: Arterial ICD estimated from Google Maps linework. | 
| Colorado Springs,
                CO El Paso Co. United States | Bridle Oaks Dr. / Woodmont Dr. (39.01377, -104.79950) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 64.0311 | Other (At-Grade) Single-Lane | 2005 | ICD estimated from Google Maps linework. | 
| Urbana,
                MD Frederick Co. United States | Sugarloaf Pkwy. / Denison St. (39.33490, -77.34180) | Roundabout Existing | Unknown Unknown | 4 Approaches 0 Driveways 36.9503 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2000 | ICD estimated from Google Maps linework. | 
| Pleasanton,
                CA Alameda Co. United States | Watermill Rd. / Watermill Rd. (37.75548, -121.90970) | Other Existing | Unknown Unknown | 2 Approaches 0 Driveways 31.1610 | Other (At-Grade) Single-Lane | ICD estimated from Google Maps linework. | |
| La Quinta,
                CA Riverside Co. United States | Jefferson St. / Avenue 52 (33.67096, -116.26870) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 51.6860 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2001 | RT bypass lanes on all legs. ICD estimated from Google Maps linework. | 
| San Francisco,
                CA San Francisco Co. United States | Waller St. / Steiner St. (37.77097, -122.43190) | Traffic Calming Circle Existing | All-Way Stop None | 4 Approaches 0 Driveways 66.0853 | Other (At-Grade) Single-Lane | 2003 | Preliminary layout for neighborhodd comment Functional Class: Local ICD estimated from Google Maps linework. | 
| Sioux Falls,
                SD Minnehaha Co. United States | 69th St. / Southeastern Ave. (43.48928, -96.68768) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 40.7250 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2011 | ICD estimated from Google Maps linework. | 
| Lawrence,
                KS Douglas Co. United States | Overland Dr. / Congressional Dr. (38.97474, -95.31127) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 27.8550 | Other (At-Grade) Single-Lane | 2003 | Both roads newly constructed in this area. Functional Class: Collector ICD estimated from Google Maps linework. | 
| Oconomowoc,
                WI Waukesha Co. United States | Wisconsin Ave. / Lake Dr. (43.11224, -88.43968) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 33.1314 | Other (At-Grade) Single-Lane | 2002 | Opened October 15, 2002. Previously controlled by one-way stop Functional Class: Local ICD estimated from Google Maps linework. | 
| Colorado Springs,
                CO El Paso Co. United States | Sybilla Ln. / (parking lot) (39.01263, -104.81160) | Roundabout Existing | Unknown Unknown | 3 Approaches 0 Driveways 25.9841 | Other (At-Grade) Single-Lane | 2004 | ICD estimated from Google Maps linework. |