| City, 
                State County Country | Intersection (Lat, Lng) | Type Status | Control Type / Other Control Type | Approaches / Driveways / ICD (m) | Functional Class / LaneType | Year Completed | Comments | 
|---|---|---|---|---|---|---|---|
| Greenwood Village,
                CO Arapahoe Co. United States | S. Monaco St. / E. Dorado Pl. (39.61199, -104.91350) | Traffic Calming Circle Existing | Unknown Unknown | 3 Approaches 0 Driveways 11.0410 | Other (At-Grade) Single-Lane | 1999 | ICD estimated from Google Maps linework. | 
| Greenwood Village,
                CO Arapahoe Co. United States | S. Monaco St. / E. Ida Ave. (39.61082, -104.91350) | Traffic Calming Circle Existing | Unknown Unknown | 4 Approaches 0 Driveways 14.7216 | Other (At-Grade) Single-Lane | 1999 | ICD estimated from Google Maps linework. | 
| Greenwood Village,
                CO Arapahoe Co. United States | S. Monaco St. / E. Powers Ave. (39.61501, -104.91350) | Traffic Calming Circle Existing | Unknown Unknown | 4 Approaches 0 Driveways 9.2005 | Other (At-Grade) Single-Lane | 1999 | ICD estimated from Google Maps linework. | 
| Greenwood Village,
                CO Arapahoe Co. United States | S. Monaco St. / E. Prentice Pl. (39.61977, -104.91350) | Traffic Calming Circle Existing | Unknown Unknown | 3 Approaches 0 Driveways 14.7197 | Other (At-Grade) Single-Lane | 1999 | ICD estimated from Google Maps linework. | 
| Greenwood Village,
                CO Arapahoe Co. United States | Peoria St. / Cherry Creek Dr. (39.61015, -104.84800) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 25.7631 | Other (At-Grade) Single-Lane | 2000 | ICD estimated from Google Maps linework. | 
| Golden,
                CO Jefferson Co. United States | Jefferson County Pkwy. / Civic Center (39.72717, -105.19940) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 34.9051 | Other (At-Grade) Single-Lane | 2000 | Feeds parking lot ICD estimated from Google Maps linework. | 
| Columbine,
                CO Jefferson Co. United States | S. Simms St. / W. Quincy Ave. (39.63865, -105.12860) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 34.0301 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2002 | ICD estimated from Google Maps linework. | 
| Northglenn,
                CO Adams Co. United States | Melody Dr. / Kennedy Dr. (39.89222, -104.99270) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 36.6541 | Other (At-Grade) Single-Lane | 1999 | Roundabout is single-lane except for NB approach with separate RT lane. ICD estimated from Google Maps linework. | 
| Littleton,
                CO Arapahoe Co. United States | Elati St. / Arapahoe Rd. (39.59515, -104.99770) | Traffic Calming Circle Existing | One-Way/Two-Way Stop None | 4 Approaches 0 Driveways 11.0437 | Other (At-Grade) Single-Lane | Functional Class: Collector ICD estimated from Google Maps linework. | |
| Littleton,
                CO Arapahoe Co. United States | Elati St. / Briarwood St. (39.59236, -104.99770) | Traffic Calming Circle Existing | One-Way/Two-Way Stop None | 4 Approaches 0 Driveways 5.5221 | Other (At-Grade) Single-Lane | Functional Class: Collector ICD estimated from Google Maps linework. | |
| Loveland,
                CO Larimer Co. United States | Rocky Mountain Ave. / Foxtrail Dr. (40.40924, -105.00230) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 40.9231 | Other (At-Grade) Multilane (2 Lane, unspecified) | 1994 | Entrance to shopping center. Functional Class: Arterial ICD estimated from Google Maps linework. | 
| Loveland,
                CO Larimer Co. United States | Rocky Mountain Ave. / McWhinney Blvd. (40.41059, -105.00230) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 43.6504 | Other (At-Grade) Multilane (2 Lane, unspecified) | 1994 | Adjacent to shopping center. Functional Class: Arterial ICD estimated from Google Maps linework. | 
| Milwaukee,
                WI Milwaukee Co. United States | S. 6th St. / W. Virginia St. / Florida St. (43.02698, -87.91770) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 42.7816 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2002 | Built as terminal of new bridge. Signal located downstream approximately 150-200 feet away (estimated) that queues back through roundabout during weekday p.m. peak. No lane designations on approach. Functional Class: Arterial ICD estimated from Google Maps linework. | 
| Kennewick,
                WA Benton Co. United States | 12th Ave. / Irving St. (46.19768, -119.19670) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 42.9874 | Other (At-Grade) Single-Lane | 2001 | Functional Class: Collector ICD estimated from Google Maps linework. | 
| Gig Harbor,
                WA Pierce Co. United States | Borgen Blvd. / 51st (47.35959, -122.60640) | Roundabout Existing | All-Way Yield Active Pedestrian Warning (flashing yellow) | 4 Approaches 0 Driveways 35.5974 | Other (At-Grade) Single-Lane | 2002 | In-pavement flashers in use on all crosswalks. Striped-out apron for future conversion to multilane. Opened September 2002. Functional Class: Arterial ICD estimated from Google Maps linework. | 
| Little Rock,
                AR Pulaski Co. United States | 36th St. / Romine Rd. / West Rd. (34.72098, -92.38181) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 22.5782 | Other (At-Grade) Single-Lane | 2001 | Elementary school and church nearby. http://www.contextsensitivesolutions.org/content/case_studies/kentucky_roundabout/resources/kentucky_roundabout_pdf/ Functional Class: Arterial ICD estimated from Google Maps linework. | 
| Boulder,
                CO Boulder Co. United States | Arapahoe Ave. / 4th St. (40.01294, -105.29160) | Traffic Calming Circle Existing | One-Way/Two-Way Stop None | 3 Approaches 0 Driveways | Other (At-Grade) Single-Lane | ||
| Boulder,
                CO Boulder Co. United States | Arapahoe Ave. / 5th St. (40.01295, -105.28920) | Traffic Calming Circle Existing | One-Way/Two-Way Stop None | 3 Approaches 0 Driveways | Other (At-Grade) Single-Lane | ||
| Boulder,
                CO Boulder Co. United States | Balsam Ave. / 14th St. (40.02675, -105.27840) | Traffic Calming Circle Existing | All-Way Yield None | 4 Approaches 0 Driveways 16.4619 | Other (At-Grade) Single-Lane | ICD estimated from Google Maps linework. | |
| Boulder,
                CO Boulder Co. United States | Balsam Ave. / 15th St. (40.02675, -105.27660) | Traffic Calming Circle Existing | All-Way Yield None | 4 Approaches 0 Driveways 8.2310 | Other (At-Grade) Single-Lane | ICD estimated from Google Maps linework. | |
| Boulder,
                CO Boulder Co. United States | Evergreen Ave. / 9th St. (40.03106, -105.28560) | Traffic Calming Circle Existing | Unknown None | 4 Approaches 0 Driveways 16.4609 | Other (At-Grade) Single-Lane | ICD estimated from Google Maps linework. | |
| Boulder,
                CO Boulder Co. United States | Kings Ridge Blvd. / Edison Ave. (40.03098, -105.23950) | Other Existing | All-Way Yield None | 3 Approaches 0 Driveways 23.7768 | Other (At-Grade) Single-Lane | ICD estimated from Google Maps linework. | |
| Boulder,
                CO Boulder Co. United States | Kings Ridge Blvd. / Franklin Dr. (40.03237, -105.23960) | Other Existing | All-Way Yield None | 4 Approaches 0 Driveways 27.4342 | Other (At-Grade) Single-Lane | ICD estimated from Google Maps linework. | |
| Boulder,
                CO Boulder Co. United States | Maxwell Ave. / 6th St. (40.02176, -105.28860) | Traffic Calming Circle Existing | One-Way/Two-Way Stop None | 4 Approaches 0 Driveways 12.8046 | Other (At-Grade) Single-Lane | ICD estimated from Google Maps linework. | |
| Boulder,
                CO Boulder Co. United States | Pearl St. / 4th St. (40.01571, -105.29050) | Traffic Calming Circle Existing | Unknown None | 4 Approaches 0 Driveways 20.1234 | Other (At-Grade) Single-Lane | ICD estimated from Google Maps linework. | |
| Boulder,
                CO Boulder Co. United States | Pearl St. / Mid-Block (40.01501, -105.29390) | Traffic Calming Circle Existing | Unknown None | 2 Approaches 0 Driveways 16.4647 | Other (At-Grade) Single-Lane | Facilitates U-turns at west end of Pearl Street ICD estimated from Google Maps linework. | |
| Boulder,
                CO Boulder Co. United States | Pine St. / 15th St. (40.02072, -105.27670) | Traffic Calming Circle Existing | Unknown None | 4 Approaches 0 Driveways 16.4634 | Other (At-Grade) Single-Lane | ICD estimated from Google Maps linework. | |
| Boulder,
                CO Boulder Co. United States | Pine St. / 17th St. (40.02126, -105.27410) | Traffic Calming Circle Existing | Unknown None | 4 Approaches 0 Driveways 10.9755 | Other (At-Grade) Single-Lane | ICD estimated from Google Maps linework. | |
| Aspen,
                CO Pitkin Co. United States | SR 82 / Maroon Creek Rd. / Castle Creek Rd. (39.19557, -106.84025) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 60.9600 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2000 | |
| Gatineau,
                QC Outaouais Region Canada | Blvd. St.-Joseph (Rte. 105) / Rue Montcalm (45.43146, -75.73314) | Roundabout Existing | All-Way Yield Pedestrian Signal (red-yellow-green to drivers) | 3 Approaches 0 Driveways 23.4678 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2003 | Opened December 9, 2003. Functional Class: Arterial ICD estimated from Google Maps linework. | 
| Denver,
                CO Denver Co. United States | E. Lowry Blvd. / N. Uinta Way (39.71986, -104.89070) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 50.5258 | Other (At-Grade) Multilane (2 Lane, unspecified) | 1998 | ICD estimated from Google Maps linework. | 
| Denver,
                CO Denver Co. United States | E. Lowry Blvd. / Yosemite St. (39.72373, -104.88400) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 51.4416 | Other (At-Grade) Multilane (2 Lane, unspecified) | 1998 | ICD estimated from Google Maps linework. | 
| Kent,
                WA King Co. United States | S. 216th St. / 42nd Ave. S / 40th Pl. S (47.40843, -122.28120) | Roundabout Existing | All-Way Yield None | 3 Approaches 1 Driveways 23.4402 | Other (At-Grade) Single-Lane | 2001 | Opened July 2001. ICD estimated from Google Maps linework. | 
| Scottsdale,
                AZ Maricopa Co. United States | N 68th St. / E Cholla St. (33.58949, -111.93552) | Traffic Calming Circle Existing | All-Way Yield None | 4 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-Lane | 2003 | Completed with traffic calming project. | 
| Lacey,
                WA Thurston Co. United States | Marvin Rd. NE / Main St. NE (47.06709, -122.76828) | Roundabout Existing | All-Way Yield None | 2 Approaches 0 Driveways 48.7680 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2000 | Roundabout installed, although cross street not initially constructed. | 
| Sammamish,
                WA King Co. United States | NE Inglewood Hill / 216th Ave. NE (47.61554, -122.05180) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 31.3989 | Other (At-Grade) Single-Lane | 2001 | October 2001. ICD estimated from Google Maps linework. | 
| University Place,
                WA Pierce Co. United States | Grandview Dr. / 56th St. W (47.20565, -122.56890) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 24.3417 | Other (At-Grade) Single-Lane | 2000 | Opened September 2000. ICD estimated from Google Maps linework. | 
| University Place,
                WA Pierce Co. United States | Grandview Dr. / 62nd Ct. W / Park Entrance (47.20033, -122.56890) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 26.7785 | Other (At-Grade) Single-Lane | 2000 | Opened September 2000. ICD estimated from Google Maps linework. | 
| University Place,
                WA Pierce Co. United States | Grandview Dr. / Bristonwood Dr. / 48th St. W (47.21334, -122.56880) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 25.9607 | Other (At-Grade) Single-Lane | 2000 | Opened September 2000. ICD estimated from Google Maps linework. | 
| University Place,
                WA Pierce Co. United States | Grandview Dr. / Cirque Dr. (47.21093, -122.56880) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 25.1506 | Other (At-Grade) Single-Lane | 2000 | Opened September 2000. ICD estimated from Google Maps linework. | 
| Wisconsin Rapids,
                WI Wood Co. United States | STH 54 (2nd Ave.) / Gaynor Ave. / 17th Ave. (44.38025, -89.84447) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 44.3874 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2004 | Opened September 2004. Previously controlled by two-way stop Functional Class: Arterial ICD estimated from Google Maps linework. | 
| Yakima,
                WA Yakima Co. United States | N. 5th Ave. / Fruitdale Blvd. (46.61242, -120.51870) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 31.1760 | Other (At-Grade) Single-Lane | 2004 | Completed July 1, 2004. Major street makes a 90-degree turn through the intersection. Previously controlled by one-way stop ICD estimated from Google Maps linework. | 
| Bend,
                OR Deschutes Co. United States | NE 8th St. / 9th St. / Franklin Ave. (44.05600, -121.29380) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 31.7577 | Other (At-Grade) Single-Lane | 2004 | ICD estimated from Google Maps linework. | 
| Bend,
                OR Deschutes Co. United States | SW Reed Market Dr. / (no cross street) (44.04080, -121.32790) | Roundabout Existing | All-Way Yield None | 2 Approaches 0 Driveways 32.6244 | Other (At-Grade) Single-Lane | 2004 | No cross street, but U-turns allowed. ICD estimated from Google Maps linework. | 
| Bend,
                OR Deschutes Co. United States | SW Reed Market Dr. / SW Bond St. / SW Brookswood Blvd. (44.04047, -121.31678) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 48.7680 | Other (At-Grade) Single-Lane | 2003 | |
| Bend,
                OR Deschutes Co. United States | SW Reed Market Dr. / Mt. Bachelor Dr. (44.03830, -121.33340) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 35.2015 | Other (At-Grade) Single-Lane | 2002 | Fourth leg was built with completion of new bridge over Deschutes River. ICD estimated from Google Maps linework. | 
| Bend,
                OR Deschutes Co. United States | SW Reed Market Dr. / SW Alderwood Cir. (44.04054, -121.32174) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 29.1904 | Other (At-Grade) Single-Lane | 2004 | ICD estimated from Google Maps linework. | 
| Eugene,
                OR Lane Co. United States | N. Terry St. / Roosevelt Blvd. (44.06371, -123.18825) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 20.5969 | Other (At-Grade) Single-Lane | 1999 | ICD estimated from Google Maps linework. | 
| Springfield,
                OR Lane Co. United States | Maple Island Rd. / Game Farm Rd. East (44.08580, -123.03510) | Roundabout Existing | All-Way Yield None | 3 Approaches 1 Driveways 25.7365 | Other (At-Grade) Single-Lane | 2002 | One leg is driveway, 4th leg is future. ICD estimated from Google Maps linework. | 
| Springfield,
                OR Lane Co. United States | 58th St. / Thurston Rd. (44.05320, -122.92640) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 25.7507 | Other (At-Grade) Single-Lane | 2001 | ICD estimated from Google Maps linework. | 
| Springfield,
                OR Lane Co. United States | Maple Island Rd. / (parking lot) (44.08710, -123.03510) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 29.1674 | Other (At-Grade) Single-Lane | 2002 | ICD estimated from Google Maps linework. | 
| Springfield,
                OR Lane Co. United States | Maple Island Rd. / International Way (44.08840, -123.03490) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 29.1668 | Other (At-Grade) Single-Lane | 2002 | ICD estimated from Google Maps linework. | 
| Tamarack Resort,
                ID Valley Co. United States | Village Dr. / Whitewater Dr. (44.67280, -116.11770) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 28.8771 | Other (At-Grade) Single-Lane | 2005 | None. ICD estimated from Google Maps linework. | 
| Scottsdale,
                AZ Maricopa Co. United States | E. Oak St. / N. 70th St. (33.47301, -111.93050) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 19.9249 | Other (At-Grade) Single-Lane | 2003 | ICD estimated from Google Maps linework. | 
| Seattle,
                WA King Co. United States | 22nd Ave. E / E Thomas St. (47.62138, -122.30360) | Traffic Calming Circle Existing | Uncontrolled Unknown | 4 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-Lane | 2006 | |
| Rutherford,
                NJ Bergen Co. United States | Park Ave. / Erie Ave. (40.82835, -74.10118) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 28.0152 | Other (At-Grade) Single-Lane | 2004 | Reconstructed as roundabout in 2004? ICD estimated from Google Maps linework. | 
| Maplewood,
                NJ Essex Co. United States | Midland Blvd. / Highland Ave. (40.73043, -74.25748) | Traffic Calming Circle Existing | Unknown Unknown | 4 Approaches 0 Driveways 83.2644 | Other (At-Grade) Single-Lane | ICD estimated from Google Maps linework. | |
| 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. | 
| 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 |