| City, 
                State County Country | Intersection (Lat, Lng) | Type Status | Control Type / Other Control Type | Approaches / Driveways / ICD (m) | Functional Class / LaneType | Year Completed | Comments | 
|---|---|---|---|---|---|---|---|
| Standish,
                MI Arenac Co. United States | US 23 / M-13 (43.95018, -83.96713) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 50.2920 | Other (At-Grade) Single-Lane | 2022 | Grade separation replaced with roundabout. https://www.upnorthvoice.com/news/2022/03/us-23-at-standish-to-undergo-major-construction-this-summer-2/ | 
| Union,
                KY Boone Co. United States | Richwood Rd. / Grand National Blvd. / Triple Crown Blvd. (38.91348, -84.63578) | Roundabout Existing | All-Way Yield Unknown | 4 Approaches 0 Driveways 0.0000 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2022 | https://www.drivingnkyprogress.org/richwoodrd | 
| Lakewood Ranch,
                FL Manatee Co. United States | Crossland Trl. / Silver Falls Run (27.43461, -82.41965) | Roundabout Existing | All-Way Yield Unknown | 3 Approaches 0 Driveways 60.9600 | Other (At-Grade) Multilane (2 Lane, 2x2 max) | 2018 | |
| Lakewood Ranch,
                FL Manatee Co. United States | Crossland Trl. / New Haven Blvd. (27.43743, -82.41733) | Roundabout Existing | All-Way Yield Unknown | 3 Approaches 0 Driveways 58.5216 | Other (At-Grade) Multilane (2 Lane, 2x2 max) | 2022 | |
| Buena Vista,
                MI Saginaw Co. United States | M-46 (E Holland Rd.) / I-75-US 23 SB Ramps (43.41453, -83.89324) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 54.8637 | Freeway Ramps (Grade-Separated) Multilane (2 Lane, 2x1 max) | 2022 | Yield-controlled right-turn bypass lane on north leg. Replaced cloverleaf interchange. https://www.michigan.gov/mdot/news-outreach/pressreleases/2022/03/30/i-75-m-46-work-in-saginaw-county-resumes-april-4-for-final-phase | 
| Saginaw,
                MI Saginaw Co. United States | M-46 (E Holland Rd.) / I-75-US 23 NB Ramps (43.41447, -83.88874) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 54.8637 | Freeway Ramps (Grade-Separated) Multilane (2 Lane, 2x1 max) | 2022 | Replaced cloverleaf interchange. Merging right-turn bypass lane on east leg. https://www.michigan.gov/mdot/news-outreach/pressreleases/2022/03/30/i-75-m-46-work-in-saginaw-county-resumes-april-4-for-final-phase | 
| South Fulton,
                GA Fulton Co. United States | Stonewall Tell Rd. / Butner Rd. (north) (33.65148, -84.59440) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-Lane | 2023 | Two single-lane roundabouts replaced single, skewed intersection. https://www.mdjonline.com/neighbor_newspapers/south_metro/news/dual-roundabouts-opened-in-city-of-south-fulton/article_921e127e-8dce-11ed-92b5-a370f676eb67.html | 
| South Fulton,
                GA Fulton Co. United States | Stonewall Tell Rd. / Butner Rd. (south) (33.65079, -84.59496) | Roundabout Existing | All-Way Yield None | 3 Approaches 1 Driveways 0.0000 | Other (At-Grade) Single-Lane | 2023 | Two single-lane roundabouts replaced single, skewed intersection. https://www.mdjonline.com/neighbor_newspapers/south_metro/news/dual-roundabouts-opened-in-city-of-south-fulton/article_921e127e-8dce-11ed-92b5-a370f676eb67.html | 
| Traverse City,
                MI Grand Traverse Co. United States | Keystone Rd. S / Beitner Rd. / River Rd. W (44.67776, -85.62668) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 38.4048 | Other (At-Grade) Single-Lane | 2022 | https://www.traverseticker.com/news/keystone-road-reopens-saturday-to-two-way-traffic/ | 
| Blue Ash,
                OH Hamilton Co. United States | Hunt Rd. / Plainfield Rd. (39.22691, -84.39426) | Roundabout Existing | All-Way Yield Rectangular Rapid Flashing Beacon (RRFB) | 4 Approaches 0 Driveways 53.0352 | Other (At-Grade) Multilane (2 Lane, 2x2 max) | 2023 | https://www.wcpo.com/news/local-news/hamilton-county/blue-ash/blue-ash-police-new-roundabout-while-confusing-some-is-reducing-crashes | 
| Rochester Hills,
                MI Oakland Co. United States | E Auburn Rd. / Gerald Ave. (42.63809, -83.09578) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 27.4320 | Other (At-Grade) Single-Lane | 2019 | Pair of roundabouts installed as part of a streetscape renovation. | 
| Rochester Hills,
                MI Oakland Co. United States | E Auburn Rd. / Harrison Ave. (42.63763, -83.09821) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 27.4317 | Other (At-Grade) Single-Lane | 2019 | Pair of roundabouts installed as part of a streetscape renovation. | 
| Pittsburgh,
                PA Allegheny Co. United States | Coral St. / Stratford Ave. (40.46221, -79.93260) | Traffic Calming Circle Existing | All-Way Yield None | 4 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-Lane | 2021 | https://www.wtae.com/article/traffic-circles-now-part-of-some-pittsburgh-neighborhoods/35982820 | 
| Pittsburgh,
                PA Allegheny Co. United States | Coral St. / S Fairmount St. (40.46240, -79.93351) | Traffic Calming Circle Existing | All-Way Yield None | 4 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-Lane | 2021 | https://www.wtae.com/article/traffic-circles-now-part-of-some-pittsburgh-neighborhoods/35982820 | 
| Pittsburgh,
                PA Allegheny Co. United States | Coral St. / Roup Ave. (40.46268, -79.93471) | Traffic Calming Circle Existing | All-Way Yield None | 4 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-Lane | 2021 | https://www.wtae.com/article/traffic-circles-now-part-of-some-pittsburgh-neighborhoods/35982820 | 
| Pittsburgh,
                PA Allegheny Co. United States | Coral St. / S Atlantic Ave. (40.46369, -79.93873) | Traffic Calming Circle Existing | All-Way Yield None | 3 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-Lane | 2021 | https://www.wtae.com/article/traffic-circles-now-part-of-some-pittsburgh-neighborhoods/35982820 | 
| Pittsburgh,
                PA Allegheny Co. United States | Coral St. / S Pacific Ave. (40.46396, -79.94014) | Traffic Calming Circle Existing | All-Way Yield None | 3 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-Lane | 2021 | https://www.wtae.com/article/traffic-circles-now-part-of-some-pittsburgh-neighborhoods/35982820 | 
| Grandview,
                MO Jackson Co. United States | US 71 NB Frontage Road / I-49-US 71 NB Ramps (38.86704, -94.52594) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 54.8637 | Freeway Ramps (Grade-Separated) Single-Lane | 2022 | https://www.grandview.org/government/city-departments/public-works/projects/i-49-outer-roads-conversion | 
| Orlando,
                FL Orange Co. United States | (connector to Cargo Rd.) / Jeff Fuqua Blvd. Ramps (28.44101, -81.30795) | Roundabout Existing | All-Way Yield None | 2 Approaches 0 Driveways 42.9765 | Freeway Ramps (Grade-Separated) Single-Lane | 2021 | At Orlando International Airport. | 
| Grandview,
                MO Jackson Co. United States | US 71 SB Frontage Rd. / I-49-US 71 SB Ramps (38.87725, -94.52680) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 54.8637 | Freeway Ramps (Grade-Separated) Single-Lane | 2022 | https://www.grandview.org/government/city-departments/public-works/projects/i-49-outer-roads-conversion | 
| Grandview,
                MO Jackson Co. United States | Main St. / US 71 Frontage Rd. (38.88876, -94.52422) | Roundabout Existing | All-Way Yield Unknown | 5 Approaches 0 Driveways 60.9600 | Other (At-Grade) Unknown | 2022 | https://www.grandview.org/government/city-departments/public-works/projects/i-49-outer-roads-conversion | 
| Grandview,
                MO Jackson Co. United States | Lawnbale St. / E 139th St. (38.87251, -94.52865) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 27.4320 | Other (At-Grade) Single-Lane | 2008 | Year Completed estimated (2007-2009). | 
| West Palm Beach,
                FL Palm Beach Co. United States | Cumberland Dr. / Saratoga Rd. (26.74745, -80.09705) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 27.4317 | Other (At-Grade) Single-Lane | 2019 | Oval shaped. ICD = 90 ft x 82 ft. Protected/separated bicycle lanes and separated bicycle-pedestrian crossings. Pedestrian buffer strips only along part of sidewalk between crosswalks. The roundabout was a conversion of an existing intersection. Some corners of the intersection don't have full concrete separators due to right of way constraints. The one separator geometry was based on a sewer air release valve manhole that couldn't be lowered. The center island is slightly oval shaped; earlier concepts had a round center island. The approaches use a zicla barrier. The artwork was added later. | 
| Iowa City,
                IA Johnson Co. United States | Herbert Hoover Hwy. NE / I-80 WB Ramps (41.67198, -91.44380) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 0.0000 | Freeway Ramps (Grade-Separated) Single-Lane | 2022 | Previous intersection was entrance ramp only. https://www.news.iowadot.gov/newsandinfo/2022/06/eastbound-i-80-ramps-at-herbert-hoover-highwayjohnson-county-road-f-44-exit-249-in-johnson-county-to.html | 
| Iowa City,
                IA Johnson Co. United States | Herbert Hoover Hwy. SE / I-80 EB Ramps (41.67099, -91.44629) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 0.0000 | Freeway Ramps (Grade-Separated) Single-Lane | 2022 | Previous intersection was exit ramp only. https://www.news.iowadot.gov/newsandinfo/2022/06/eastbound-i-80-ramps-at-herbert-hoover-highwayjohnson-county-road-f-44-exit-249-in-johnson-county-to.html | 
| Dallas,
                TX Dallas Co. United States | N Tyler St. / N Polk St. / Winston St. (32.75167, -96.83770) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 47.2440 | Other (At-Grade) Multilane (2 Lane, 2x1 max) | 2021 | Replaced two intersections. | 
| Rocklin,
                CA Placer Co. United States | Rocklin Rd. / Pacific St. (38.79073, -121.23610) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 0.0000 | Other (At-Grade) Multilane (2 Lane, 2x2 max) | 2023 | Yield-controlled right-turn bypass lanes on west and south legs; add-lane right-turn bypass lane on east leg. https://www.rocklin.ca.us/roundabout | 
| (unincorporated),
                NE Sarpy Co. United States | S 180th St. / Cornhusker Rd. (41.16150, -96.19661) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-Lane | 2022 | Year Completed estimated (2022-2023). | 
| Folsom,
                CA Sacramento Co. United States | Grand Prairie Rd. / Rustic Ridge Dr. / Alder Creek Pkwy (38.64059, -121.09212) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 35.0520 | Other (At-Grade) Single-Lane | 2018 | Year Completed estimated (2018-2019). | 
| Folsom,
                CA Sacramento Co. United States | Grand Prairie Rd. / Rustic Ridge Dr. (38.63617, -121.09165) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 35.0520 | Other (At-Grade) Single-Lane | 2018 | Year Completed estimated (2018-2019). | 
| (unincorporated),
                OH Delaware Co. United States | Eagles Landing Dr. / Liberty Grand Blvd. (40.20685, -83.10250) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 39.6240 | Other (At-Grade) Single-Lane | 2020 | Year Completed estimated (2019-2021). | 
| Viviers-du-Lac,
                Auvergne-Rhône-Alpes Savoie France | D1202 (Les Rives du Lac) / D1201a (Route du Bourget) / D17b (Route du Lac) (45.64779, 5.89304) | Roundabout Existing | All-Way Yield Unknown | 4 Approaches 0 Driveways | Other (At-Grade) Multilane (2 Lane, unspecified) | Two entries have two lanes both designated as through movements but with single-lane exits throughout. | |
| Viviers-du-Lac,
                Auvergne-Rhône-Alpes Savoie France | D1201 (Les Rives du Lac) / D50 / Chemin du Port (45.65105, 5.89320) | Roundabout Existing | All-Way Yield Unknown | 5 Approaches 0 Driveways | Other (At-Grade) Single-Lane | ||
| Lakewood,
                WA Pierce Co. United States | North Gate Rd. SW / Edgewood Ave. SW / Winona St. SW (47.14678, -122.56385) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-Lane | 2022 | https://www.kiro7.com/news/south-sound-news/stolen-car-stopped-by-wet-cement-lakewood/GDU77T3M6NC2RKBPTKKY5N53SA/ | 
| Kalispell,
                MT Flathead Co. United States | US 2 / Springcreek Rd. / Dern Rd. (48.19696, -114.37378) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 42.6720 | Other (At-Grade) Single-Lane | 2021 | https://www.mdt.mt.gov/pubinvolve/dernspring/ | 
| Voglans,
                Auvergne-Rhône-Alpes Savoie France | D1201 (Route d'Aix) / D17 / Route de l'Aéroport (45.63766, 5.89217) | Roundabout Existing | All-Way Yield Unknown | 4 Approaches 0 Driveways | Other (At-Grade) Multilane (2 Lane, unspecified) | ||
| Voglans,
                Auvergne-Rhône-Alpes Savoie France | D1504 / D1201 Ramps (45.61639, 5.88404) | Roundabout Existing | All-Way Yield Unknown | 4 Approaches 0 Driveways 96.0000 | Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified) | ||
| Chambéry,
                Auvergne-Rhône-Alpes Savoie France | Avenue de Villarcher / Rue des Marais (45.61489, 5.88752) | Roundabout Existing | All-Way Yield Unknown | 4 Approaches 0 Driveways | Other (At-Grade) Single-Lane | ||
| Chambéry,
                Auvergne-Rhône-Alpes Savoie France | Avenue de Villarcher / Rue des Marais (45.61268, 5.88781) | Roundabout Existing | All-Way Yield Unknown | 4 Approaches 0 Driveways | Other (At-Grade) Multilane (2 Lane, unspecified) | ||
| Chambéry,
                Auvergne-Rhône-Alpes Savoie France | Rue de Belle Eau / Avenue de Villarcher (45.61041, 5.88918) | Roundabout Existing | All-Way Yield Unknown | 3 Approaches 0 Driveways 28.0000 | Other (At-Grade) Single-Lane | ||
| Waynesville,
                MO Pulaski Co. United States | Historic Route 66 / Hwy T (37.81205, -92.23491) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 45.7200 | Other (At-Grade) Single-Lane | 2017 | Year Completed estimated (2016-2018). | 
| Bonne Terre,
                MO St. Francois Co. United States | Old Orchard Rd. / Raider Rd. / US 67 SB Ramps (37.91037, -90.53216) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 47.2440 | Freeway Ramps (Grade-Separated) Single-Lane | 2008 | Elliptical shaped. ICD = 155 ft x 145 ft. Year Completed estimated (2007-2009). | 
| Bonne Terre,
                MO St. Francois Co. United States | Old Orchard Rd. / US 67 NB Ramps (37.91294, -90.53029) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 53.3400 | Freeway Ramps (Grade-Separated) Single-Lane | 2008 | Year Completed estimated (2007-2009). | 
| Black Diamond,
                WA King Co. United States | SE Auburn Black Diamond Rd. / Ten Trails Pkwy. SE (47.31106, -122.03510) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 41.4528 | Other (At-Grade) Single-Lane | 2019 | North leg added 2021-2022. | 
| Avila Beach,
                CA San Luis Obispo Co. United States | Avila Beach Dr. / Palisades Rd. / US 101 SB Ramps (35.17977, -120.70042) | Roundabout Unknown | All-Way Yield Unknown | 4 Approaches 0 Driveways 44.1960 | Freeway Ramps (Grade-Separated) Single-Lane | Anticipated opening in fall of 2024. | |
| Lino Lakes,
                MN Anoka Co. United States | Birch St. / Tomahawk Trl. (45.14236, -93.11531) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 42.6720 | Other (At-Grade) Single-Lane | 2021 | Completed October 2021. | 
| Lino Lakes,
                MN Anoka Co. United States | Birch St. / Shadow Lake Dr. (45.14228, -93.10960) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 42.6720 | Other (At-Grade) Single-Lane | 2021 | Completed October 2021. | 
| Afton,
                VA Albemarle Co. United States | US 250 (Rockfish Gap Turnpike) / SR 151 (Critzers Shop Rd.) (38.02982, -78.80684) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-Lane | 2022 | https://www.blueridgelife.com/2022/11/17/250-151-roundabout-is-active-so-far-so-good-but-its-early/ | 
| Kansas City,
                MO Clay Co. United States | N Shoal Creek Pkwy. / Maplewoods Pkwy. (39.28995, -94.55702) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 51.8160 | Other (At-Grade) Single-Lane | 2021 | Merging right-turn bypass lane lane on west leg. https://www.kcmo.gov/Home/Components/FacilityDirectory/FacilityDirectory/139/360?npage=2 | 
| Kansas City,
                MO Clay Co. United States | N Maplewoods Pkwy. / NE 106th St. / NE Staley Ferris Dr. (39.28508, -94.55712) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 51.8160 | Other (At-Grade) Single-Lane | 2021 | Peanut shaped. Replaced two offset T-intersections. https://www.kcmo.gov/Home/Components/FacilityDirectory/FacilityDirectory/139/360?npage=2 | 
| Kansas City,
                MO Clay Co. United States | N Maplewoods Pkwy. / New Mark Dr. / NE 100th St. (39.27475, -94.55715) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 45.7200 | Other (At-Grade) Single-Lane | 2021 | https://www.kcmo.gov/Home/Components/FacilityDirectory/FacilityDirectory/139/360?npage=2 | 
| Kansas City,
                MO Clay Co. United States | N Maplewoods Pkwy. / NE 96th St. (39.26747, -94.55716) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 45.7200 | Other (At-Grade) Multilane (2 Lane, 2x1 max) | 2021 | East leg stubbed. https://www.kcmo.gov/Home/Components/FacilityDirectory/FacilityDirectory/139/360?npage=2 | 
| Kansas City,
                MO Platte Co. United States | Line Creek Pkwy. / Tiffany Springs Rd. (39.25957, -94.61010) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 51.8160 | Other (At-Grade) Multilane (2 Lane, 2x1 max) | 2021 | |
| Kansas City,
                MO Clay Co. United States | N Booth Ave. / NE Shoal Creek Valley Dr. / Commercial Dr. (39.24626, -94.47674) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 44.1960 | Other (At-Grade) Multilane (2 Lane, 2x1 max) | 2020 | Yield-controlled right-turn bypass lane on west leg. Year Completed estimated (2020-20210. | 
| Kansas City,
                MO Clay Co. United States | NE Shoal Creek Valley Dr. / (unknown) (39.24673, -94.47459) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 36.5760 | Other (At-Grade) Single-Lane | 2020 | |
| Sedalia,
                MO Pettis Co. United States | Rte Y (W 16th St.) / Winchester Dr. (38.69957, -93.27763) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-Lane | 2011 | Year Completed estimated (2010-2012). | 
| San Juan Bautista,
                CA San Benito Co. United States | SR 156 (San Juan Hollister Rd.) / Bixby Rd. (36.84096, -121.49042) | Roundabout Unknown | All-Way Yield Unknown | 4 Approaches 0 Driveways 68.2749 | Other (At-Grade) Multilane (2 Lane, 2x1 max) | ICD 224 ft x 211 ft. Anticipated opening year in 2025. | |
| Castroville,
                CA Monterey Co. United States | (unknown) / SR 156 EB Ramps (36.76908, -121.73823) | Roundabout Unknown | All-Way Yield Unknown | 3 Approaches 0 Driveways 41.7573 | Freeway Ramps (Grade-Separated) Single-Lane | Anticipated opening year 2025. Future 3rd leg is planned to connect to BlackieRd. | |
| Castroville,
                CA Monterey Co. United States | (unknown) / SR 156 WB Ramps (36.77058, -121.73771) | Roundabout Unknown | All-Way Yield Unknown | 4 Approaches 0 Driveways 53.3400 | Freeway Ramps (Grade-Separated) Single-Lane | Anticipated opening year 2025. | |
| Castroville,
                CA Monterey Co. United States | Castroville Blvd. / (unknown) (36.77419, -121.74051) | Roundabout Unknown | All-Way Yield Unknown | 3 Approaches 0 Driveways 49.3776 | Other (At-Grade) Single-Lane | Anticipated opening year 2025. | |
| Fisherman Flats,
                CA Monterey Co. United States | SR 68 / Josselyn Canyon Rd. (36.58359, -121.85655) | Roundabout Unknown | All-Way Yield Unknown | 3 Approaches 0 Driveways 46.7868 | Other (At-Grade) Single-Lane | Anticipated opening year 2029. | |
| Monterey,
                CA Monterey Co. United States | SR 68 / Olmsted Rd. (36.58399, -121.84976) | Roundabout Unknown | All-Way Yield Unknown | 4 Approaches 0 Driveways 46.6344 | Other (At-Grade) Single-Lane | Anticipated opening year 2029. | |
| Del Rey Oaks,
                CA Monterey Co. United States | SR 68 / Canyon del Rey Blvd. / Monterra Rd. (36.58090, -121.82797) | Roundabout Unknown | All-Way Yield Unknown | 4 Approaches 0 Driveways 52.5780 | Other (At-Grade) Multilane (2 Lane, 2x2 max) | Anticipated opening year 2029. | |
| Monterey,
                CA Monterey Co. United States | SR 68 / York Rd. (36.57156, -121.80839) | Roundabout Unknown | All-Way Yield Unknown | 3 Approaches 0 Driveways 46.7868 | Other (At-Grade) Single-Lane | Anticipated opening year 2029. | |
| Salinas,
                CA Monterey Co. United States | SR 68 ./ Pasadera Dr. / Boots Rd. (36.56766, -121.77857) | Roundabout Unknown | All-Way Yield Unknown | 4 Approaches 0 Driveways 46.9087 | Other (At-Grade) Single-Lane | Anticipated opening year 2029. | |
| Salinas,
                CA Monterey Co. United States | SR 68 / Laureles Grade Rd. (36.56964, -121.75566) | Roundabout Unknown | All-Way Yield Unknown | 4 Approaches 0 Driveways 46.5427 | Other (At-Grade) Single-Lane | Future 4th leg connects to Laguna Seca Entrance. Anticipated opening year 2029. | |
| Salinas,
                CA Monterey Co. United States | SR 68 / Corral de Tierra Rd. / Cypress Church Dr. (36.57854, -121.72709) | Roundabout Unknown | All-Way Yield Unknown | 4 Approaches 0 Driveways 46.1772 | Other (At-Grade) Single-Lane | Oval shaped. ICD = 151.5 ft x 141.5 ft. Anticipated opening year 2029. | |
| Salinas,
                CA Monterey Co. United States | SR 68 / San Benancio Rd. (36.57977, -121.72073) | Roundabout Unknown | All-Way Yield Unknown | 3 Approaches 0 Driveways 45.2323 | Other (At-Grade) Single-Lane | Anticipated opening year 2029. | |
| Templeton,
                CA San Luis Obispo Co. United States | N Main St. / US 101 NB Ramps (35.56543, -120.70151) | Roundabout Unknown | All-Way Yield Unknown | 4 Approaches 0 Driveways 56.0829 | Freeway Ramps (Grade-Separated) Multilane (2 Lane, 2x1 max) | Oval shaped. ICD = 184 ft x 157 ft. Anticipated opening year 2030. | |
| Templeton,
                CA San Luis Obispo Co. United States | N Main St. / US 101 SB Ramps / Theatre Dr. (35.56644, -120.70261) | Roundabout Unknown | All-Way Yield Unknown | 4 Approaches 0 Driveways 43.8909 | Freeway Ramps (Grade-Separated) Single-Lane | Anticipated opening year 2030. | |
| Morro Bay,
                CA San Luis Obispo Co. United States | Atascadero Rd. / US 101 NB Ramps / Main St. (35.38023, -120.85489) | Roundabout Unknown | All-Way Yield Unknown | 4 Approaches 0 Driveways 48.7680 | Freeway Ramps (Grade-Separated) Multilane (2 Lane, 2x1 max) | Oval shaped. ICD = 160 ft x 130 ft. Anticipated opening year 2026. | |
| New Haven,
                CT New Haven Co. United States | Chapel St. / Yale Ave. (41.31448, -72.95891) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-Lane | 2023 | Peanut shaped. Replaces skewed intersection. https://www.fox61.com/video/news/local/new-haven-county/new-haven/first-of-its-kind-peanut-shaped-roundabout-opens-in-new-haven/520-3db77500-495f-4ae7-a441-ed85863cd327 | 
| Raymore,
                MO Cass Co. United States | MO 58 / Ward Rd. (38.80255, -94.40147) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-Lane | 2022 | https://www.raymore.com/Home/Components/News/News/2466/ | 
| Raymore,
                MO Cass Co. United States | S Madison St. / (park access) (38.78857, -94.45769) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 42.6720 | Other (At-Grade) Single-Lane | 2009 | Year Completed estimated (2009-2010). | 
| Lafayette,
                LA Lafayette Par. United States | Dulles Dr. / N Domingue Ave. (30.21055, -92.08378) | Roundabout Existing | All-Way Yield None | 3 Approaches 1 Driveways 36.5760 | Other (At-Grade) Single-Lane | 2021 | Year Completed estimated (2021-2022). | 
| Ottawa,
                ON Ottawa Canada | Greenbank Rd. / Half Moon Bay Rd. (45.25555, -75.73742) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways | Other (At-Grade) Single-lane w/ Traversable Central Island | 2022 | Year Completed estimated (2021-2023). | 
| Novi,
                MI Oakland Co. United States | W 9 Mile Rd. / Taft Rd. (42.45158, -83.49410) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-Lane | 2022 | https://www.candgnews.com/news/novi-council-approves-lighting-for-new-roundabout-635 | 
| Truckee,
                CA Nevada Co. United States | Donner Pass Rd. / Cold Stream Rd. / I-80 EB Ramps (39.32359, -120.22747) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 0.0000 | Freeway Ramps (Grade-Separated) Single-Lane | 2021 | |
| Truckee,
                CA Nevada Co. United States | Cold Creek Cir. / Summer Camp Way (39.32143, -120.22793) | Unknown Existing | Unknown Unknown | 3 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-Lane | ||
| Stockton,
                CA San Joaquin Co. United States | E Miner Ave. / N San Joaquin St. (37.95611, -121.28804) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 30.4800 | Other (At-Grade) Single-Lane | 2021 | Bicycle lanes leading into roundabout with bicycle sharrows on outer edge of circulatory roadway beyond each entry. https://twitter.com/stocktonupdates/status/1407046118156947458 | 
| Santa Clara,
                CA Santa Clara Co. United States | (shopping center entrance) / (parking) (37.35667, -121.93755) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 18.2880 | Other (At-Grade) Single-lane w/ Traversable Central Island | 2022 | https://www.svvoice.com/coleman-costco-installing-roundabout/ | 
| Ramara,
                ON Simcoe Canada | Hwy 12 / CR 169 / Concession Road 6 (44.57153, -79.18908) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 45.0000 | Other (At-Grade) Single-Lane | 2022 | Year Completed estimated (2022-2023). | 
| Moses Lake,
                WA Grant Co. United States | SR 17 / Grape Dr. (47.14957, -119.29411) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 0.0000 | Other (At-Grade) Multilane (2 Lane, 2x1 max) | 2022 | https://wsdot.wa.gov/construction-planning/search-projects/sr-17-grape-drive-intersection-improvements https://columbiabasinherald.com/news/2022/sep/06/grape-dr-roundabout-nears-completion/ | 
| Panama City Beach,
                FL Bay Co. United States | Front Beach Rd. / S Arnold Rd. (30.22327, -85.89081) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-Lane | 2023 | Triangular section of roads converted to roundabout with two of the former triangle sides to be converted to large-radius right-turn bypass lanes. https://www.pcbfl.gov/Home/Components/News/News/4818/ https://www.newsherald.com/story/news/local/2023/01/20/panama-city-beach-opens-a-new-lane-on-front-beach-road-roundabout/69820095007/ | 
| Alcoa,
                TN Blount Co. United States | E Edison St. / Springbrook Rd. / Lodge St. (35.78949, -83.97406) | Roundabout Existing | All-Way Yield Unknown | 4 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-Lane | 2022 | https://www.thedailytimes.com/news/alcoa-earns-project-of-the-year-for-marconi-greenway-project-in-springbrook/article_a745962a-7caa-11ed-8c50-372ba2368c28.html | 
| Steamboat Springs,
                CO Routt Co. United States | Mount Werner Dr. / Steamboat Blvd. / Bangtail Way (40.45897, -106.81287) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 0.0000 | Other (At-Grade) Multilane (2 Lane, 2x1 max) | 2022 | https://www.engagesteamboat.net/roundabout | 
| Steamboat Springs,
                CO Routt Co. United States | Central Park Dr. / Alpine Plaza / (parking) (40.46194, -106.82118) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 33.5280 | Other (At-Grade) Single-Lane | 2017 | Entrance to Central Park Plaza shopping center. Year Completed estimated (2015-2018). | 
| Woodland,
                CA Yolo Co. United States | Road 25A / Parkland Ave. (38.64099, -121.74450) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 32.0040 | Other (At-Grade) Single-Lane | 2020 | |
| Woodland,
                CA Yolo Co. United States | Road 25A / Miekle Ave. (38.64078, -121.73624) | Roundabout Existing | All-Way Yield None | 2 Approaches 0 Driveways 32.0040 | Other (At-Grade) Single-Lane | 2021 | Year Completed estimated (2020-2021). | 
| Woodland,
                CA Yolo Co. United States | Hunt St. / Heritage Pkwy. (38.64945, -121.74580) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 39.6240 | Other (At-Grade) Single-Lane | 2019 | Year Completed estimated (2018-2020). | 
| Knoxville,
                TN Knox Co. United States | Moss Grove Blvd. / Amberleigh Bluff Way (35.90592, -84.09103) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 36.5760 | Other (At-Grade) Single-Lane | 2011 | Year Completed estimated (2010-2012). | 
| Knoxville,
                TN Knox Co. United States | Montlake Dr. / Lakemoor View Rd. / US 129 SB Exit Ramp (35.92067, -83.95729) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 44.1960 | Freeway Ramps (Grade-Separated) Single-Lane | 2021 | |
| Meridian,
                ID Ada Co. United States | S Vanguard Way / S Wayfinder Ave. / (parking) (43.59800, -116.43116) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 60.9600 | Other (At-Grade) Multilane (2 Lane, 2x1 max) | 2017 | Right-turn-only lane on northeast leg. | 
| Meridian,
                ID Ada Co. United States | S Wayfinder Ave. / W Cobalt Dr. (43.60115, -116.42905) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 41.1480 | Other (At-Grade) Single-Lane | 2018 | Year Completed estimated (2017-2018). | 
| Missoula,
                MT Missoula Co. United States | Mullan Rd. / Mary Jane Blvd. (46.88725, -114.05372) | Roundabout Existing | All-Way Yield None | 3 Approaches 1 Driveways 0.0000 | Other (At-Grade) Multilane (2 Lane, 2x1 max) | 2023 | Year Completed estimated (2022-2023). | 
| Spruce Grove,
                AB Division 11 Canada | Pioneer Rd. / Grove Dr. (53.55573, -113.86097) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 47.0000 | Other (At-Grade) Multilane (2 Lane, 2x1 max) | 2017 | |
| Spruce Grove,
                AB Division 11 Canada | Grove Dr. W / Copperhaven Dr. / Harvest Ridge Dr. (53.55575, -113.95196) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 48.0000 | Other (At-Grade) Single-Lane | 2018 | Year Completed estimated (2016-2020). | 
| Spruce Grove,
                AB Division 11 Canada | Grove Dr. W / (unknown) (53.55467, -113.95664) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 48.0000 | Other (At-Grade) Single-Lane | 2020 | Year Completed estimated (2016-2020). | 
| Spruce Grove,
                AB Division 11 Canada | Pioneer Rd. (Range Road 271) / Fenwyck Blvd. (53.55121, -113.86090) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 48.0000 | Other (At-Grade) Single-Lane | 2020 | Year Completed estimated (2017-2020). | 
| Spruce Grove,
                AB Division 11 Canada | Pioneer Rd (Range Road 271) / (unknown) (53.54856, -113.86090) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 45.0000 | Other (At-Grade) Single-Lane | 2020 | Year Completed estimated (2017-2020). |