| City, 
                State County Country | Intersection (Lat, Lng) | Type Status | Control Type / Other Control Type | Approaches / Driveways / ICD (m) | Functional Class / LaneType | Year Completed | Comments | 
|---|---|---|---|---|---|---|---|
| Apple Valley,
                MN Dakota Co. United States | Diamond Path W / 140th St. W / Connemara Trl. (44.74637, -93.15649) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 41.1480 | Other (At-Grade) Single-Lane | 2023 | On the border between Apple Valley and Rosemount. https://nextdoor.com/agency-post/mn/rosemount/city-of-rosemount/the-intersection-at-diamond-path-and-connemara-trail-is-now-closed-to-through-traffic-for-construction-of-a-roundabout-282288126/ | 
| Cedar Rapids,
                IA Linn Co. United States | Wilson Ave. SW / Bowling St. SW (41.95585, -91.65756) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 27.4320 | Other (At-Grade) Single-lane w/ Traversable Central Island | 2024 | https://www.reddit.com/r/cedarrapids/comments/1fodquc/wilson_avenue_and_bowling_street_roundabout/ | 
| Gustine,
                CA Merced Co. United States | SR 33-SR 140 / 4th St. (37.25362, -120.99742) | Roundabout Existing | All-Way Yield Unknown | 3 Approaches 0 Driveways 39.6240 | Other (At-Grade) Single-Lane | 2025 | https://www.westsideconnect.com/news/community-news/gustines-first-roundabout-completed-a-new-chapter-for-the-community/ | 
| Memphis,
                TN Shelby Co. United States | US 70 (W Eh Crump Blvd.) / Riverside Dr / I-55 Ramps / W Alston Ave. (35.12483, -90.06723) | Roundabout Existing | All-Way Yield At-grade Rail Crossing Signals/Gates (controlling approach only) | 5 Approaches 0 Driveways 73.1520 | Freeway Ramps (Grade-Separated) Multilane (2 Lane, 2x2 max) | 2025 | Replaced three-quadrant cloverleaf interchange. At-grade rail crossing 430 ft to the east. https://www.youtube.com/watch?v=7DjkNBuVjlo | 
| Palmdale,
                CA Los Angeles Co. United States | E Avenue S8 / 40th St. E (34.54990, -118.05834) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 42.6720 | Other (At-Grade) Single-Lane | 2025 | Yield-controlled right-turn bypass lane on south and east legs. https://www.facebook.com/CityofPalmdale/videos/para-espa%C3%B1ol-roundabout-tips-for-a-smoother-rideave-s-8-40th-st-east-is-now-open/3977904792456970/ . | 
| Kannapolis,
                NC Cabarrus Co. United States | SR 3 (Mooresville Rd.) / Miller St. / Franklin Ave. (35.49574, -80.63904) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 60.9600 | Other (At-Grade) Multilane (2 Lane, 2x1 max) | 2023 | Year Completed estimated (2023-2024). | 
| Kannapolis,
                NC Cabarrus Co. United States | Lane St. / Turkey Rd. / Royse St. (35.49738, -80.55891) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 54.8640 | Other (At-Grade) Multilane (2 Lane, 2x1 max) | 2020 | Year Completed estimated (2019-2021). | 
| Davidson,
                NC Cabarrus Co. United States | SR 3 (Mooresville Rd.) / Odell School Rd. (35.48835, -80.75930) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 41.1480 | Other (At-Grade) Single-Lane | 2022 | Year Completed estimated (2022-2023). | 
| Huntersville,
                NC Mecklenburg Co. United States | Bryton Pkwy. / Bryton Ridge Pkwy. (35.38172, -80.82887) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 41.1480 | Other (At-Grade) Single-Lane | 2017 | Year Completed estimated (2016-2017). | 
| Latham,
                NY Albany Co. United States | Winter Creek Blvd. / (parking) (42.73060, -73.76251) | Other Existing | All-Way Stop Unknown | 4 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-Lane | ||
| Noblesville,
                IN Hamilton Co. United States | Allisonville Rd. / E 146th St. Ramps (40.00038, -86.01932) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 0.0000 | Freeway Ramps (Grade-Separated) Multilane (2 Lane, 2x1 max) | 2025 | Grade separated interchange with roundabout on the lower level. 146th Street through traffic passes overhead. Roundabout opened to traffic June 9, 2025 while final construction continued in the area. https://hamiltoncounty.in.gov/DocumentCenter/View/17636/146th--Allisonville---Looking-Northwest https://hamiltoncounty.in.gov/DocumentCenter/View/17637/146th--Allisonville---Looking-Southwest https://hamiltoncounty.in.gov/1238/146th-St-Allisonville-Rd-Interchange | 
| Harrisburg,
                NC Cabarrus Co. United States | Stallings Rd. / Lotus Dr. (35.31571, -80.64023) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 39.6240 | Other (At-Grade) Single-Lane | 2022 | Yield-controlled right-turn bypass lane on north leg. Add-lane right-turn bypass lane on east leg. https://www.facebook.com/story.php/?story_fbid=434214805375646&id=100063613898455&_rdr | 
| Harrisburg,
                NC Cabarrus Co. United States | Stallings Rd. / Raging Ridge Rd. (35.31390, -80.63383) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 39.6240 | Other (At-Grade) Single-Lane | 2022 | |
| Concord,
                NC Cabarrus Co. United States | Drake MIll Ln. / Holden Ave. (35.31413, -80.58479) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 67.0560 | Other (At-Grade) Single-Lane | 2020 | Original circle built 2006-2008. Splitter islands added 2019-2021. | 
| Albany,
                GA Dougherty Co. United States | N Westover Blvd. / Capstone Connector (31.62104, -84.21878) | Roundabout Existing | All-Way Yield Unknown | 3 Approaches 0 Driveways 0.0000 | Other (At-Grade) Multilane (2 Lane, 2x1 max) | 2025 | https://www.facebook.com/GDOTSW/videos/here-you-go-albanydougherty-colee-co-the-westover-blvd-roundabout-in-action-were/971035348343443/ | 
| MIdland,
                TX Midland Co. United States | N Garfield St. / W Cuthbert Ave. (32.00234, -102.10148) | Roundabout Existing | All-Way Yield Unknown | 4 Approaches 0 Driveways 57.9120 | Other (At-Grade) Multilane (2 Lane, 2x1 max) | 2025 | Elliptical shaped. ICD = 190 ft x 150 ft. https://www.instagram.com/reel/DKK8XzFS0uo/ | 
| Troy,
                NY Rensselaer Co. United States | Frear Park Rd. / 15th St. (42.74683, -73.67271) | Other Existing | All-Way Yield Unknown | 3 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-Lane | No splitter islands on south leg. | |
| Swedesboro,
                NJ Gloucester Co. United States | Valley Forge Dr. / Yorktown Rd. (39.74156, -75.33234) | Other Existing | Other Unknown | 4 Approaches 0 Driveways 35.0520 | Other (At-Grade) Single-Lane | Yield-controlled northwest and southeast legs; uncontrolled northeast and southwest legs. | |
| Swedesboro,
                NJ Gloucester Co. United States | Pine Dr. / Ashburn Way (39.74389, -75.33937) | Other Existing | Other Unknown | 4 Approaches 0 Driveways 35.0520 | Other (At-Grade) Single-Lane | Southwest leg is uncontrolled; other legs are yield controlled. | |
| Swedesboro,
                NJ Gloucester Co. United States | Holly Dr. / Ashburn Way (39.74467, -75.34385) | Other Existing | Other Unknown | 4 Approaches 0 Driveways 35.0520 | Other (At-Grade) Single-Lane | Uncontrolled southwest leg; other legs are yield controlled. | |
| Swedesboro,
                NJ Gloucester Co. United States | Village Green Dr. / Dalton Dr. / Roundstone Run (39.73260, -75.32429) | Other Existing | Other Unknown | 4 Approaches 0 Driveways 35.0520 | Other (At-Grade) Single-Lane | Painted splitter island and yield control on south leg; no splitter islands and no control on other legs. | |
| Swedesboro,
                NJ Gloucester Co. United States | Hazel Blvd. / Balsam Rd. (39.73123, -75.32836) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 50.2920 | Other (At-Grade) Single-Lane | 2020 | Painted splitter islands on all legs. Original circular intersection constructed 2011-2016; splitter islands and yield control added 2020. | 
| Glassboro,
                NJ Gloucester Co. United States | US 322 / Rowan Blvd. (39.70686, -75.11415) | Roundabout Existing | All-Way Yield Unknown | 3 Approaches 0 Driveways 39.6240 | Other (At-Grade) Single-Lane | 2009 | Year Completed estimated (2008-2010). | 
| Woodbine,
                NJ Cape May Co. United States | CR 610 (Dennisville-Petersburg Rd.) / CR 550 (Dehlisch Ave. / Woodbine-Ocean View Rd.) (39.22105, -74.77919) | Roundabout Existing | All-Way Yield Unknown | 4 Approaches 0 Driveways 45.7200 | Other (At-Grade) Single-Lane | 2020 | |
| Princeton Junction,
                NJ Mercer Co. United States | Washington Rd. / Princeton Hightstown Rd. (40.32083, -74.62315) | Roundabout Existing | All-Way Yield Unknown | 3 Approaches 0 Driveways 39.6240 | Other (At-Grade) Single-Lane | 2024 | Roundabout located 300 ft north of old intersection. | 
| Interlaken,
                NJ Monmouth Co. United States | Main St. / Grassmere Ave. (40.23195, -74.00802) | Roundabout Existing | All-Way Yield At-grade Rail Crossing Signals/Gates (controlling approach only) | 3 Approaches 0 Driveways 45.7200 | Other (At-Grade) Single-Lane | 2017 | At-grade rail crossing (two tracks) located 110 ft to west. Year Completed estimated (2016-2017). | 
| Westerville,
                OH Delaware Co. United States | SR 605 / Fancher Rd. (40.13242, -82.80976) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 45.7200 | Other (At-Grade) Single-Lane | 2024 | |
| Johnstown,
                OH Licking Co. United States | Green Chapel Rd. / Mink St. (40.12321, -82.69688) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 45.7200 | Other (At-Grade) Single-Lane | 2024 | |
| Johnstown,
                OH Licking Co. United States | Green Chapel Rd. / (unknown) (40.12333, -82.70509) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 50.2920 | Other (At-Grade) Multilane (2 Lane, 2x1 max) | 2024 | |
| New Albany,
                OH Licking Co. United States | Green Chapel Rd. / (unknown) (40.12385, -82.71205) | Roundabout Existing | All-Way Yield None | 3 Approaches 1 Driveways 50.2920 | Other (At-Grade) Multilane (2 Lane, 2x1 max) | 2024 | |
| Johnstown,
                OH Licking Co. United States | Mink St. / (unknown) (40.10488, -82.70700) | Roundabout Existing | All-Way Yield None | 3 Approaches 1 Driveways 50.2920 | Other (At-Grade) Multilane (2 Lane, 2x1 max) | 2024 | |
| McKinney,
                TX Collin Co. United States | E Virginia St. / N Throckmorton St. (33.19801, -96.60863) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 33.5277 | Other (At-Grade) Single-Lane | 2025 | |
| McKinney,
                TX Collin Co. United States | Wilmeth Rd. / Lake Forest Dr. (33.23242, -96.67934) | Roundabout Existing | All-Way Yield Unknown | 4 Approaches 0 Driveways 50.2920 | Other (At-Grade) Multilane (2 Lane, 2x2 max) | 2025 | |
| McKinney,
                TX Collin Co. United States | Wilmeth Rd. / Hardin Blvd. (33.23223, -96.65209) | Roundabout Existing | All-Way Yield Unknown | 4 Approaches 0 Driveways 56.3880 | Other (At-Grade) Multilane (2 Lane, 2x2 max) | 2025 | |
| Buffalo,
                MN Wright Co. United States | STH 25 / CSAH 83 (35th St. NE) (45.20141, -93.86692) | Roundabout Existing | All-Way Yield Unknown | 3 Approaches 0 Driveways 42.6717 | Other (At-Grade) Single-Lane | 2024 | |
| Tulare,
                CA Tulare Co. United States | SR 137 (E Tulare Ave.) / Morrison St. (36.21093, -119.30330) | Roundabout Existing | All-Way Yield Unknown | 4 Approaches 0 Driveways 30.4800 | Other (At-Grade) Single-Lane | 2025 | https://www.facebook.com/100082142657015/posts/ccme-is-in-the-final-stages-of-the-tulare-avestate-hwy-137-roundabout-project-fo/700819749332774/ | 
| Bothell,
                WA Snohomish Co. United States | Meridian Ave. S / 240th St. SE / 240th St. SW (47.78041, -122.23298) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 27.4320 | Other (At-Grade) Single-Lane | 2024 | https://bothellwa.gov/2001/Meridian-Ave-S-and-240th-St-SE-Roundabou | 
| Fitchburg,
                WI Dane Co. United States | S Seminole Hwy. / Lacy Rd. (43.00116, -89.45924) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 45.7200 | Other (At-Grade) Single-Lane | 2023 | https://www.wmtv15news.com/2023/11/17/lacy-road-construction-is-complete-with-added-speed-reductions/ | 
| Palmetto,
                GA Fulton Co. United States | Fayetteville Rd. / Phipps Rd. (33.51449, -84.65766) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-Lane | 2023 | |
| Bowling Green,
                KY Warren Co. United States | Ashley Cir. / Westen St. (36.96894, -86.43656) | Roundabout Existing | All-Way Yield Unknown | 4 Approaches 0 Driveways 30.4800 | Other (At-Grade) Single-Lane | 2023 | https://www.wbko.com/2023/06/20/construction-begins-roundabout-ashley-circlewesten-street-intersection/ | 
| Bowling Green,
                KY Warren Co. United States | Westen St. / Patrick Way (36.96519, -86.44527) | Roundabout Existing | All-Way Yield Unknown | 4 Approaches 0 Driveways 30.4800 | Other (At-Grade) Single-Lane | 2024 | https://www.youtube.com/watch?v=degpDxeAwUM | 
| Bowling Green,
                KY Warren Co. United States | Westen St. / Highland Way (36.96372, -86.44766) | Roundabout Existing | All-Way Yield Unknown | 4 Approaches 0 Driveways 30.4800 | Other (At-Grade) Single-Lane | 2024 | https://www.facebook.com/citybgky/posts/the-westen-street-and-highland-way-roundabout-project-was-anticipated-to-have-be/906701484824529/ | 
| Charlotte,
                NC Mecklenburg Co. United States | Lakeview Rd. / Reames Rd. (35.33246, -80.85242) | Roundabout Existing | All-Way Yield Unknown | 4 Approaches 0 Driveways 48.7680 | Other (At-Grade) Single-Lane | 2023 | Yield-controlled right-turn bypass lane on northeast leg. https://www.charlottenc.gov/Growth-and-Development/Projects/CNIPSunset/Lakeview-Reames | 
| Joplin,
                MO Jasper Co. United States | E Zora St. / Hall St. / Duquesne Rd. (37.11261, -94.45761) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-Lane | 2025 | https://www.facebook.com/JoplinNewsFirst/videos/koamtrafficalert-roundabout-opens-at-zoraduquesnehall-to-all-traffic/1644473069823426/ | 
| Hanover,
                MN Wright Co. United States | CSAH 19 (Labeaux Ave. NE) / CSAH 34 (Beebe Lake Rd. NE) (45.16175, -93.66604) | Roundabout Existing | All-Way Yield Unknown | 3 Approaches 0 Driveways 36.5760 | Other (At-Grade) Single-Lane | 2024 | |
| Marysville,
                WA Snohomish Co. United States | SR 529 (48.04425, -122.18013) | Roundabout Existing | All-Way Yield None | 2 Approaches 0 Driveways 45.7200 | Other (At-Grade) Single-Lane | 2025 | |
| Hurricane,
                UT Washington Co. United States | S Sand Hollow Rd. / Gateway Blvd. (37.16339, -113.37305) | Roundabout Existing | All-Way Yield Unknown | 4 Approaches 0 Driveways 82.2960 | Other (At-Grade) Multilane (2 Lane, 2x2 max) | 2025 | Add-lane right-turn bypass lane on north leg. Merging right-turn bypass lane on west leg. | 
| Hurricane,
                UT Washington Co. United States | Sand Hollow Resort Pkwy. / Retreat Dr. (37.11581, -113.39937) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 39.6240 | Other (At-Grade) Single-Lane | 2009 | Yield-controlled right-turn bypass lane on east leg. Year Completed estimated (2006-2009). | 
| Santa Clarita,
                CA Los Angeles Co. United States | Lost Canyon Rd. / Humphreys Pkwy. / Jakes Way (34.41385, -118.44083) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 36.5760 | Other (At-Grade) Single-Lane | 2019 | Year Completed estimated (2018-2019). | 
| Santa Clarita,
                CA Los Angeles Co. United States | Humphreys Pkwy. (34.41365, -118.43763) | Other Existing | Unknown Unknown | 3 Approaches 1 Driveways 0.0000 | Other (At-Grade) Unknown | No splitter islands. | |
| Santa Clarita,
                CA Los Angeles Co. United States | Grand Ln. / Vista Canyon Rd. (34.41431, -118.43437) | Other Existing | Unknown Unknown | 3 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-Lane | No splitter islands. | |
| Santa Clarita,
                CA Los Angeles Co. United States | Grand Ln. / Provo Ln. (34.41741, -118.43096) | Other Existing | Uncontrolled Unknown | 2 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-Lane | ||
| Fort Collins,
                CO Larimer Co. United States | E Mulberry Street Frontage Rd. / Greenfield Dr. (40.58247, -105.01497) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 0.0000 | Other (At-Grade) Multilane (2 Lane, 2x1 max) | 2024 | |
| Timnath,
                CO Larimer Co. United States | Buss Grove Rd. (CR 40) / Timnath Pkwy. (40.53741, -104.97702) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 57.9120 | Other (At-Grade) Multilane (2 Lane, 2x1 max) | 2024 | |
| Timnath,
                CO Larimer Co. United States | 2nd Ave. / Signal Tree Dr. (40.52405, -104.97700) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 39.6240 | Other (At-Grade) Single-Lane | 2020 | |
| Timnath,
                CO Larimer Co. United States | Weitzel St. / Swetsville Zoo Rd. (40.51930, -104.98815) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 48.7680 | Other (At-Grade) Multilane (2 Lane, 2x1 max) | 2022 | Year Completed estimated (2021-2023). | 
| Greeley,
                CO Weld Co. United States | W F St. / N 35th Ave. (40.44090, -104.73501) | Roundabout Existing | All-Way Yield At-grade Rail Crossing Signals/Gates (controlling approach only) | 4 Approaches 0 Driveways 38.1000 | Other (At-Grade) Single-Lane | 2022 | Right-turn-only lane and two-lane exit on south leg. At-grade rail crossing approximately 260 feet to north. Year Completed estimated (2021-2023). | 
| Greeley,
                CO Weld Co. United States | W C St. / N 35th Ave. (40.43739, -104.73495) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 47.2440 | Other (At-Grade) Multilane (2 Lane, 2x1 max) | 2022 | Year Completed estimated (2021-2023). | 
| Berthoud,
                CO Larimer Co. United States | CR 8 / CR 21 (40.30512, -105.13134) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 41.1480 | Other (At-Grade) Single-Lane | 2023 | https://www.larimer.gov/sites/default/files/2023-safety-report-final-20240806.pdf (page 20) | 
| Estes Park,
                CO Larimer Co. United States | US 36 (N Saint Vrain Ave.) / Community Dr. (40.37449, -105.49980) | Roundabout Existing | All-Way Yield Unknown | 3 Approaches 0 Driveways 48.7680 | Other (At-Grade) Multilane (2 Lane, 2x1 max) | 2022 | Year Completed estimated (2019-2024). | 
| Estes Park,
                CO Larimer Co. United States | US 36 / US 34 Business / Crags Dr. (40.37248, -105.52360) | Roundabout Existing | All-Way Yield Unknown | 4 Approaches 0 Driveways 36.5760 | Other (At-Grade) Multilane (2 Lane, 2x1 max) | 2022 | Elliptical shaped. Replaced two two-way stop-controlled intersections. ICD = 120 ft x 95 ft. Year Completed estimated (2019-2024). | 
| Johnstown,
                CO Weld Co. United States | SH 60 / Gateway Cir. (40.33527, -104.98559) | Roundabout Existing | All-Way Yield Unknown | 4 Approaches 0 Driveways 59.4360 | Other (At-Grade) Multilane (2 Lane, 2x2 max) | 2024 | Primary access to large travel and fuel center. Year Completed estimated (2023-2024). | 
| La Salle,
                CO Weld Co. United States | CR 44 / US 85 SB Ramps (40.30821, -104.74948) | Roundabout Existing | All-Way Yield Unknown | 3 Approaches 0 Driveways 53.3400 | Freeway Ramps (Grade-Separated) Single-Lane | 2024 | https://www.9news.com/article/traffic/us-85-colorado-new-interchange/73-2b7e4e5d-a889-4452-8d39-477c814991d0 | 
| Longmont,
                CO Boulder Co. United States | Harvest Moon Dr. / (parking) / (unknown) (40.15101, -105.08420) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 41.1480 | Other (At-Grade) Single-Lane | 2023 | Right-turn-only lane and two-lane exit on north leg. Year Completed estimated (2022-2023). | 
| Lochbuie,
                CO Adams Co. United States | E 168th Ave. / Frontage Rd. (40.00051, -104.71769) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 51.8160 | Other (At-Grade) Multilane (2 Lane, 2x1 max) | 2020 | Ellipitcal shaped. ICD = 170 ft x 140 ft. | 
| Broomfield,
                CO Adams Co. United States | W 122nd Ave. / N Park Centre Dr. (39.92089, -105.01002) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 36.5760 | Other (At-Grade) Single-Lane | 2002 | North leg stubbed. Year Completed estimated (2001-2003). | 
| Thornton,
                CO Adams Co. United States | Washington Center Pkwy. / Lafayette St. (39.91876, -104.97204) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 45.7200 | Other (At-Grade) Single-Lane | 2002 | Year Completed estimated (1999-2002). | 
| Thornton,
                CO Adams Co. United States | Riverdale Rd. / Quebec St. (39.91040, -104.90320) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 35.0520 | Other (At-Grade) Single-Lane | 2018 | |
| Westminster,
                CO Adams Co. United States | W 117th Ave. / Quitman St. (39.90885, -105.04229) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 36.5760 | Other (At-Grade) Single-Lane | 2005 | |
| Aurora,
                CO Arapahoe Co. United States | Copperleaf Blvd. / Radcliff Pkwy. (39.63537, -104.72624) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 54.8640 | Other (At-Grade) Multilane (2 Lane, 2x1 max) | 2022 | Year Completed estimated (2022-2023). | 
| Westerville,
                OH Franklin Co. United States | Little Turtle Way W / Longrifle Rd. (40.08322, -82.87865) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 47.2440 | Other (At-Grade) Multilane (2 Lane, 2x1 max) | 2023 | Yield-controlled right-turn bypass lane on south leg. | 
| Castle Rock,
                CO Douglas Co. United States | Mikelson Blvd. / Mitchell St. (39.36622, -104.79813) | Roundabout Existing | All-Way Yield Rectangular Rapid Flashing Beacon (RRFB) | 3 Approaches 0 Driveways 0.0000 | Other (At-Grade) Multilane (2 Lane, 2x1 max) | 2024 | https://www.youtube.com/watch?v=QkZTn1X4oAY | 
| Castle Rock,
                CO Douglas Co. United States | Crystal Valley Pkwy. / S Wilcox St. / E Frontage Rd. / I-25 NB Exit Ramp (39.33865, -104.87343) | Roundabout Existing | All-Way Yield Rectangular Rapid Flashing Beacon (RRFB) | 5 Approaches 0 Driveways 60.9600 | Freeway Ramps (Grade-Separated) Multilane (2 Lane, 2x1 max) | 2024 | https://www.crgov.com/3131/Crystal-Valley-Interchange. Partially open in November 2024. | 
| Castle Rock,
                CO Douglas Co. United States | E Montaine Cir. / Quarry Mesa Dr. (39.32630, -104.85197) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 42.6720 | Other (At-Grade) Single-Lane | 2023 | |
| Black Forest,
                CO El Paso Co. United States | SR 50 (Walker Rd.) / Jane Lundeen Dr. (39.09974, -104.76828) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 54.8637 | Other (At-Grade) Multilane (2 Lane, 2x1 max) | 2023 | Double left turn on south leg. Right-turn-only on west leg. | 
| Falcon,
                CO El Paso Co. United States | Falcon Market Pl. / Woodmen Frontage Rd. / E Woodmen Rd. (38.94134, -104.61192) | Roundabout Existing | All-Way Yield None | 3 Approaches 1 Driveways 45.7200 | Other (At-Grade) Single-Lane | 2022 | |
| Colorado Springs,
                CO El Paso Co. United States | Meridian Sol Dr. / Swingline Rd. (38.93013, -104.60820) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 39.6240 | Other (At-Grade) Single-Lane | 2022 | Elliptical shaped. ICD = 130 ft x 105 ft. | 
| Colorado Springs,
                CO El Paso Co. United States | Meadow Brook Pkwy. / Newt Dr. (38.84432, -104.69242) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 27.4317 | Other (At-Grade) Single-Lane | 2023 | |
| Colorado Springs,
                CO El Paso Co. United States | S Troy Hill Rd. / Joystone Dr. (38.82702, -104.72760) | Roundabout Existing | All-Way Yield None | 3 Approaches 1 Driveways 38.1000 | Other (At-Grade) Single-Lane | 2019 | |
| Santa Barbara,
                CA Santa Barbara County United States | E Cabrillo Blvd. / Los Patos Way / Channel Dr. (34.42133, -119.65642) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 38.1000 | Other (At-Grade) Single-Lane | 2025 | https://keyt.com/lifestyle/travel/2025/05/28/new-cabrillo-and-los-patos-roundabout-project-opens-up/ | 
| Vista,
                CA San Diego County United States | Foothill Dr. / Oak Dr. (north) (33.21634, -117.22192) | Roundabout Existing | All-Way Yield Unknown | 3 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-Lane | 2025 | Elliptical shaped. Part of closely spaced pair of roundabouts. https://www.youtube.com/watch?v=Imr8lxz23dc | 
| Vista,
                CA San Diego County United States | Foothill Dr. / Oak Dr. (south) (33.21602, -117.22114) | Roundabout Existing | All-Way Yield Unknown | 3 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-Lane | 2025 | Part of closely spaced pair of roundabouts. | 
| New Castle,
                CO Garfield County United States | US 6 / Castle Valley Blvd. (39.56797, -107.51604) | Roundabout Existing | All-Way Yield Rectangular Rapid Flashing Beacon (RRFB) | 4 Approaches 0 Driveways 0.0000 | Other (At-Grade) Multilane (2 Lane, 2x1 max) | 2025 | https://kdvr.com/news/local/new-multi-lane-roundabout-at-intersection-of-us-6-and-castle-valley-road/ | 
| Brainerd,
                MN Crow Wing Co. United States | CSAH 49 (Wise Rd.) / Beaver Dam Rd. (46.38448, -94.22428) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 44.1960 | Other (At-Grade) Single-Lane | 2022 | |
| Philadelphia,
                PA Philadelphia Co. United States | S 20th St. / Penrose Ave. / Packer Ave. / W Moyamensing Ave. (39.91297, -75.18205) | Roundabout Existing | All-Way Yield Unknown | 5 Approaches 0 Driveways 47.2440 | Other (At-Grade) Single-Lane | 2025 | Features separated bicycle lanes. | 
| Punta Gorda,
                FL Charlotte Co. United States | US 41 (Tamiami Trl.) / Carmalita St. (26.92980, -82.04751) | Roundabout Existing | All-Way Yield Unknown | 3 Approaches 0 Driveways 0.0000 | Other (At-Grade) Multilane (2 Lane, 2x1 max) | 2025 | https://www.gulfshorebusiness.com/gb_daily/new-downtown-roundabout-opens-in-punta-gorda/ | 
| Toa Alta,
                Toa Alta Municipio Ortíz Barrio Puerto Rico | Avenida los Palacios / Calle Guajataca (18.34875, -66.20882) | Other Existing | All-Way Yield None | 4 Approaches 0 Driveways | Other (At-Grade) Single-Lane | Circle existed in 2016 but without controlling signs; by 2024 Yield signs had been added. | |
| Toa Alta,
                Toa Alta Municipio Ortíz Barrio Puerto Rico | Avenida Los Palacios / Ave. Palacios Reales / Ave. Palacios de Marbella (18.34576, -66.20688) | Other Existing | All-Way Yield None | 4 Approaches 0 Driveways | Other (At-Grade) Single-Lane | Circle existed in 2016 but with stop signs on two approaches; no controls on the other two. Yield signs on all approaches in 2024. | |
| Richmond,
                VA Richmond City United States | Maury St. / E 4th St. / I-95 Ramps (37.52145, -77.43415) | Roundabout Existing | All-Way Yield None | 5 Approaches 0 Driveways 50.2920 | Freeway Ramps (Grade-Separated) Single-Lane | 2022 | E 4th St. is one-way into roundabout on northwest leg. | 
| Richmond,
                VA Richmond City United States | E Main St. / Dock St. / Peebles St. (37.52433, -77.41841) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 44.1960 | Other (At-Grade) Single-Lane | 2018 | |
| Crystal Lake,
                IL McHenry Co. United States | E Congress Pkwy. / Federal Dr. (42.23117, -88.30719) | Roundabout Existing | All-Way Yield Unknown | 3 Approaches 0 Driveways 21.3360 | Other (At-Grade) Single-Lane | 2023 | https://www.crystallake.org/your-government/departments/community-development/engineering/roundabout-information | 
| Grand Island,
                NE Hall County United States | W 13th St. / Claude Rd. (40.93152, -98.38788) | Roundabout Existing | All-Way Yield Unknown | 4 Approaches 0 Driveways 38.1000 | Other (At-Grade) Single-Lane | 2024 | https://www.ksnblocal4.com/2024/03/25/claude-road-project-begin-grand-island/ | 
| Grand Island,
                NE Hall County United States | State St. / Claude Rd. (40.93840, -98.38861) | Roundabout Existing | All-Way Yield Unknown | 4 Approaches 0 Driveways 38.1000 | Other (At-Grade) Single-Lane | 2024 | https://www.ksnblocal4.com/2024/03/25/claude-road-project-begin-grand-island/ | 
| Harpersfield,
                OH Ashtabula County United States | SR 534 (S Broadway) / SR 307 (N River Rd. E) (41.75981, -80.94122) | Roundabout Existing | All-Way Yield Unknown | 4 Approaches 0 Driveways 42.6720 | Other (At-Grade) Single-Lane | 2024 | https://www.news5cleveland.com/news/local-news/we-follow-through/local-businesses-relieved-as-major-construction-project-concludes-in-ashtabula-county | 
| Jordan,
                MN Scott County United States | STH 21 / CR 66 (Sawmill Rd.) (44.65659, -93.62855) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-Lane | 2023 | https://test10.gettingbeached.com/montgomery-messenger-news/highway-21-roundabout-jordan-fully-open-friday-sept-29 | 
| Lino Lakes,
                MN Ramsey County United States | Hodgson Rd. / Ash St. (CR J) (45.12412, -93.12745) | Roundabout Existing | All-Way Yield Unknown | 4 Approaches 0 Driveways 36.5760 | Other (At-Grade) Single-Lane | 2024 | Elliptical shaped. ICD = 120 ft x 110 ft. https://www.facebook.com/StoeszLinoLakes/videos/all-lanes-open-on-new-roundabout-at-county-road-j-and-hodgson-happy-labor-day-we/534935302432611/ | 
| Monument,
                CO El Paso County United States | W Baptist Rd. / Terrazzo Dr. (39.05656, -104.85476) | Roundabout Existing | All-Way Yield Unknown | 4 Approaches 0 Driveways 53.3400 | Other (At-Grade) Multilane (2 Lane, 2x1 max) | 2024 | https://www.codot.gov/projects/archives/baptistterrazzoroundabout | 
| Renfrew,
                ON Renfrew Canada | Hwy 60 (O'Brien Rd.) / Wrangler Rd. / Innovation Dr. (45.47897, -76.65228) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways | Other (At-Grade) Single-Lane | 2024 | https://www.pentictonherald.ca/spare_news/article_f8ceef21-c90e-5cc1-add9-a8e0b8cee9e8.html | 
| Hays,
                NC Wilkes County United States | Traphill Rd. / Yellow Banks Rd. (36.26353, -81.12210) | Roundabout Existing | All-Way Yield Unknown | 3 Approaches 0 Driveways 44.1960 | Other (At-Grade) Single-Lane | 2022 | https://www.ncdot.gov/news/press-releases/Pages/2022/2022-01-06-wilkes-county-roundabout.aspx | 
| Saginaw,
                MN St. Louis County United States | US 2 / STH 194 / Saginaw Rd. (46.84660, -92.41735) | Roundabout Existing | All-Way Yield Unknown | 4 Approaches 0 Driveways 44.1960 | Other (At-Grade) Single-Lane | 2023 |