| City, 
                State County Country | Intersection (Lat, Lng) | Type Status | Control Type / Other Control Type | Approaches / Driveways / ICD (m) | Functional Class / LaneType | Year Completed | Comments | 
|---|---|---|---|---|---|---|---|
| Overland Park,
                KS Johnson Co. United States | 157th St. / King St. (38.84201, -94.71545) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 40.9304 | Other (At-Grade) Single-Lane | 2007 | Built for new development. ICD estimated from Google Maps linework. | 
| Olathe,
                KS Johnson Co. United States | Access Rd. / Bass Pro entrance (38.91125, -94.77769) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 25.0919 | Other (At-Grade) Single-Lane | 2007 | Opened February 2007. Access to Bass Pro retail center. ICD estimated from Google Maps linework. | 
| Olathe,
                KS Johnson Co. United States | Renner Rd. / North Bass Pro entrance (38.91125, -94.77965) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 34.3852 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2007 | Opened February 2007. Access to Bass Pro retail center. ICD estimated from Google Maps linework. | 
| Olathe,
                KS Johnson Co. United States | Renner Rd. / South Bass Pro entrance (38.90922, -94.77960) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 31.5981 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2007 | Opened February 2007. Access to Bass Pro retail center. ICD estimated from Google Maps linework. | 
| Olathe,
                KS Johnson Co. United States | Kansas City Rd. / Nelson Rd. / Church St. (38.88896, -94.80412) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 24.1702 | Other (At-Grade) Single-Lane | 2004 | Previously controlled by two-way stop ICD estimated from Google Maps linework. | 
| Olathe,
                KS Johnson Co. United States | Kansas City Rd. / Buchanan St. / Prairie St. (38.88704, -94.80763) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 26.9598 | Other (At-Grade) Single-Lane | 2004 | Previously controlled by two-way stop ICD estimated from Google Maps linework. | 
| Olathe,
                KS Johnson Co. United States | 118th St. / Greenwood St. (38.91447, -94.75040) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 35.3130 | Other (At-Grade) Single-Lane | 2005 | ICD estimated from Google Maps linework. | 
| Olathe,
                KS Johnson Co. United States | Indian Wells Dr. / Spruce St. (38.88568, -94.85022) | Roundabout Removed | All-Way Yield None | 2 Approaches 0 Driveways 44.6239 | Other (At-Grade) Single-Lane | 2002 | Replaced in 2015 with new roundabout in location shifted slightly to west. ICD estimated from Google Maps linework. | 
| Olathe,
                KS Johnson Co. United States | S Warwick St. / 165th St. (38.82870, -94.80401) | Roundabout Existing | All-Way Yield None | 2 Approaches 0 Driveways 26.0515 | Other (At-Grade) Single-Lane | 2007 | ICD estimated from Google Maps linework. | 
| Olathe,
                KS Johnson Co. United States | 167th St. / Lindenwood Dr. (38.82558, -94.78903) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 41.8703 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2009 | Built for new development. Series of 3 roundabouts. ICD estimated from Google Maps linework. | 
| Olathe,
                KS Johnson Co. United States | 167th St. / Mur-Len St. (38.82566, -94.77972) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 50.2443 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2009 | Built for new development. Series of 3 roundabouts. ICD estimated from Google Maps linework. | 
| Olathe,
                KS Johnson Co. United States | 167th St. / (unknown) (38.82562, -94.77064) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 43.7312 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2009 | Built for new development. Series of 3 roundabouts. ICD estimated from Google Maps linework. | 
| Merriam,
                KS Johnson Co. United States | Carter St. / Turkey Creek Dr. (39.00353, -94.69585) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 28.7718 | Other (At-Grade) Single-Lane | 2008 | Built for new development. ICD estimated from Google Maps linework. | 
| Manhattan,
                KS Riley Co. United States | 4th St. / Bluemont Ave. (39.18669, -96.56160) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 41.6571 | Other (At-Grade) Single-Lane | 2010 | Previously controlled by two-way stop ICD estimated from Google Maps linework. | 
| Topeka,
                KS Shawnee Co. United States | Wanamaker Rd. / 37th St. (39.00010, -95.76231) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 41.7675 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2006 | Opened June 2006. Previously controlled by two-way stop ICD estimated from Google Maps linework. | 
| Topeka,
                KS Shawnee Co. United States | Wanamaker Rd. / 41st St. (38.99257, -95.76227) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 50.1263 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2006 | Opened June 2006. Previously controlled by two-way stop ICD estimated from Google Maps linework. | 
| Topeka,
                KS Shawnee Co. United States | Wanamaker Rd. / 53rd St. (38.97103, -95.76216) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 33.4277 | Other (At-Grade) Single-Lane | 2007 | Previously controlled by two-way stop ICD estimated from Google Maps linework. | 
| Topeka,
                KS Shawnee Co. United States | NW 46th St. / Oakley Ave. / Hunters Ridge Dr. (39.12937, -95.71753) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 41.6911 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2010 | ICD estimated from Google Maps linework. | 
| Topeka,
                KS Shawnee Co. United States | NW 46th St. / Fielding Rd. (39.12928, -95.71420) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 49.1029 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2010 | ICD estimated from Google Maps linework. | 
| Shawnee,
                KS Johnson Co. United States | Woodsonia Dr. / Clear Creek Pkwy. (39.02142, -94.84924) | Roundabout Existing | All-Way Yield None | 2 Approaches 0 Driveways 32.4760 | Other (At-Grade) Single-Lane | 2004 | Date estimated. ICD estimated from Google Maps linework. | 
| Riverton,
                KS Cherokee Co. United States | US 69 Alt / K-66 / Beasley Rd. (37.07561, -94.71608) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 57.1730 | Other (At-Grade) Single-Lane | 2008 | Opened December 2008. Previously controlled by two-way stop ICD estimated from Google Maps linework. | 
| De Pere,
                WI Brown Co. United States | Main Ave.-Wisconsin St. (STH 32) / Broadway (STH 57) (44.44744, -88.06049) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 48.5995 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2007 | Opened July 12, 2007. First multilane roundabout in Wisconsin. ICD estimated from Google Maps linework. | 
| Howard,
                WI Brown Co. United States | Lineville Rd. (CTH M) / Belmont Rd. (44.59075, -88.09447) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 25.5159 | Other (At-Grade) Single-Lane | 2006 | Completed summer 2006. Previously controlled by two-way stop ICD estimated from Google Maps linework. | 
| Howard,
                WI Brown Co. United States | Lineville Rd. (CTH M) / Velp Ave. (CTH HS) (44.59094, -88.07787) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 32.3200 | Other (At-Grade) Single-Lane | 2005 | Completed summer 2005. Fatal crash October 30, 2005. 11861-05. ICD estimated from Google Maps linework. | 
| Howard,
                WI Brown Co. United States | Lineville Rd. (CTH M) / Waterway Ct. (44.59112, -88.07314) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 28.9178 | Other (At-Grade) Single-Lane | 2007 | Completed summer 2007. ICD estimated from Google Maps linework. | 
| Milwaukee,
                WI Milwaukee Co. United States | W Canal St. / N 25th St. (43.03109, -87.94351) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 41.9057 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2005 | Opened September 15, 2005 ICD estimated from Google Maps linework. | 
| Madison,
                WI Dane Co. United States | Star Dr. / Apollo Way (43.08892, -89.27760) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 26.1663 | Other (At-Grade) Single-Lane | 2003 | Date estimated. ICD estimated from Google Maps linework. | 
| Madison,
                WI Dane Co. United States | Star Dr. / Dominion Dr. (43.09153, -89.27502) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 26.1652 | Other (At-Grade) Single-Lane | 2006 | Date estimated. ICD estimated from Google Maps linework. | 
| Madison,
                WI Dane Co. United States | McLean Dr. / Sharpsburg Dr. (43.08695, -89.27359) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 26.1672 | Other (At-Grade) Single-Lane | 2003 | Date estimated. ICD estimated from Google Maps linework. | 
| Provo,
                UT Utah Co. United States | E 900 S / Nevada Ave. / S 1350 E / S 1400 E (40.22206, -111.63470) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 26.4459 | Other (At-Grade) Single-Lane | 2005 | ICD estimated from Google Maps linework. | 
| Lehi,
                UT Utah Co. United States | N 900 W / W Grasslands Dr. (40.38620, -111.82260) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 31.8400 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2004 | In parking lot for big box retail shopping center. ICD estimated from Google Maps linework. | 
| St. George,
                UT Washington Co. United States | Washington Pkwy. / (unknown) (37.14462, -113.48590) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 60.9290 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2005 | Date estimated. ICD estimated from Google Maps linework. | 
| Champaign,
                IL Champaign Co. United States | English Oak Dr. / Chestnut Grove Dr. (40.09811, -88.32787) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 26.4942 | Other (At-Grade) Single-Lane | 2005 | ICD estimated from Google Maps linework. | 
| Champaign,
                IL Champaign Co. United States | Crabapple Ln. / Sandcherry Dr. (40.09553, -88.32968) | Roundabout Existing | All-Way Yield Unknown | 4 Approaches 1 Driveways 30.4800 | Other (At-Grade) Single-Lane | 2006 | |
| Dalton Gardens,
                ID Kootenai Co. United States | 4th St. / Hanley Ave. (47.72981, -116.77610) | Roundabout Existing | All-Way Yield Active Pedestrian Warning (flashing yellow) | 4 Approaches 0 Driveways 32.1335 | Other (At-Grade) Single-Lane | 2009 | ICD estimated from Google Maps linework. | 
| Nassau,
                New Providence Nassau The Bahamas | Harrold Rd. / Sir Milo Butler Hwy (25.04628, -77.37572) | Roundabout Existing | Unknown Unknown | 4 Approaches 0 Driveways 50.8550 | Other (At-Grade) Multilane (2 Lane, unspecified) | ICD estimated from Google Maps linework. | |
| Nassau,
                New Providence Nassau The Bahamas | Harrold Rd. / Bahama Games Blvd. (25.04516, -77.36151) | Roundabout Existing | Unknown Unknown | 4 Approaches 0 Driveways 50.8555 | Other (At-Grade) Multilane (2 Lane, unspecified) | ICD estimated from Google Maps linework. | |
| Nassau,
                New Providence Nassau The Bahamas | Harrold Rd. / Independence Dr. / Blue Hill Rd. (25.04437, -77.35043) | Roundabout Existing | Unknown Unknown | 4 Approaches 0 Driveways 62.7582 | Other (At-Grade) Multilane (2 Lane, unspecified) | ICD estimated from Google Maps linework. | |
| Madison,
                WI Dane Co. United States | Lien Rd. / Zeier Rd. (43.12128, -89.29919) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 53.1768 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2010 | Opened October 2010. ICD estimated from Google Maps linework. | 
| Mosinee,
                WI Marathon Co. United States | Main St. / Old Highway 51 / Ranger St. (44.79026, -89.69181) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 45.7706 | Other (At-Grade) Single-Lane | 2010 | ICD estimated from Google Maps linework. | 
| Billings,
                MT Yellowstone Co. United States | Shiloh Rd. / Grand Ave. (45.78407, -108.61760) | Roundabout Existing | All-Way Yield Unknown | 4 Approaches 0 Driveways 39.1455 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2009 | Series of 8 roundabouts. Fatal crash 2012. 11861-05. Functional Class: Principal Arterial ICD estimated from Google Maps linework. | 
| Billings,
                MT Yellowstone Co. United States | Shiloh Rd. / Broadwater Ave. (45.77685, -108.61760) | Roundabout Existing | All-Way Yield Unknown | 4 Approaches 0 Driveways 44.9815 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2009 | Series of 8 roundabouts. Functional Class: Principal Arterial ICD estimated from Google Maps linework. | 
| Billings,
                MT Yellowstone Co. United States | Shiloh Rd. / Central Ave. (45.76963, -108.61760) | Roundabout Existing | All-Way Yield Unknown | 4 Approaches 0 Driveways 53.3183 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2010 | Series of 8 roundabouts. Functional Class: Principal Arterial ICD estimated from Google Maps linework. | 
| Billings,
                MT Yellowstone Co. United States | Shiloh Rd. / Monad Rd. (45.76236, -108.61760) | Roundabout Existing | All-Way Yield Unknown | 4 Approaches 0 Driveways 46.6596 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2010 | Series of 8 roundabouts. Previously controlled by two-way stop Functional Class: Principal Arterial ICD estimated from Google Maps linework. | 
| Billings,
                MT Yellowstone Co. United States | Shiloh Rd. / King Ave. (45.75507, -108.61760) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 58.3321 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2010 | Series of 8 roundabouts. Functional Class: Principal Arterial ICD estimated from Google Maps linework. | 
| Billings,
                MT Yellowstone Co. United States | Shiloh Rd. / (Local Access) (45.74776, -108.61750) | Roundabout Existing | All-Way Yield Unknown | 4 Approaches 0 Driveways 37.5041 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2010 | Series of 8 roundabouts. Main access to construction materials facility (600+ trucks per day). Previously controlled by two-way stop Functional Class: Principal Arterial ICD estimated from Google Maps linework. | 
| Billings,
                MT Yellowstone Co. United States | Shiloh Rd. / Hesper Rd. (45.74060, -108.61740) | Roundabout Existing | Unknown Unknown | 4 Approaches 0 Driveways 43.3436 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2009 | Series of 8 roundabouts. Functional Class: Principal Arterial ICD estimated from Google Maps linework. | 
| Billings,
                MT Yellowstone Co. United States | Shiloh Rd. / Zoo Dr. (45.73609, -108.61740) | Roundabout Existing | All-Way Yield Unknown | 4 Approaches 0 Driveways 41.6799 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2009 | Series of 8 roundabouts. Previously controlled by two-way stop Functional Class: Principal Arterial ICD estimated from Google Maps linework. | 
| Nassau,
                New Providence Nassau The Bahamas | Independence Dr. / East St. (25.04569, -77.34169) | Roundabout Existing | All-Way Yield Unknown | 4 Approaches 0 Driveways 55.1833 | Other (At-Grade) Multilane (2 Lane, unspecified) | ICD estimated from Google Maps linework. | |
| Santa Barbara,
                CA Santa Barbara Co. United States | Cabrillo Blvd. / Coast Village Rd. / Hot Springs Rd. (34.42272, -119.65268) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 45.7200 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2009 | |
| Billings,
                MT Yellowstone Co. United States | Hwy 3 / 27th St. / Airport Rd. (45.80209, -108.53540) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 45.7937 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2009 | Located at Billings airport. Functional Class: Principal Arterial ICD estimated from Google Maps linework. | 
| Redding,
                CA Shasta Co. United States | Shasta View Dr. / Inspiration Pl. (40.59578, -122.32500) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 39.9026 | Other (At-Grade) Single-Lane | 2009 | In a new school zone Functional Class: Arterial ICD estimated from Google Maps linework. | 
| Corinth,
                MS Alcorn Co. United States | Harper Rd. / Droke Rd. (34.92347, -88.49539) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-Lane | 2010 | School 1000' west of roundabout. | 
| Fairfield Township,
                OH Butler Co. United States | Hamilton Mason Rd. / Liberty Fairfield Rd. (39.37527, -84.48046) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 40.6219 | Other (At-Grade) Single-Lane | 2008 | Since completion, has reduced accidents by 80%. Replaced two offset T intersections. Previously controlled by two-way stop Functional Class: Major Collector ICD estimated from Google Maps linework. | 
| Olympia,
                WA Thurston Co. United States | Evergreen Pkwy. NW / McCann Plaza (47.06936, -122.97440) | Roundabout Existing | Unknown Unknown | 3 Approaches 0 Driveways 42.3006 | Other (At-Grade) Single-Lane | 2005 | Entrance to college. Opened November 2005. ICD estimated from Google Maps linework. | 
| Olympia,
                WA Thurston Co. United States | 14th Ave. SE / E Bay Dr. / Henderson Blvd. SE (47.02971, -122.89140) | Roundabout Existing | Unknown Unknown | 4 Approaches 0 Driveways 33.3772 | Other (At-Grade) Single-Lane | 2005 | Opened July 2005. Southbound right turn bypass lane. ICD estimated from Google Maps linework. | 
| Sammamish,
                WA King Co. United States | Issaquah Pine Lake Rd. / SE 32nd Way (47.57894, -122.02810) | Roundabout Existing | Unknown Unknown | 3 Approaches 0 Driveways 33.8378 | Other (At-Grade) Single-Lane | 2005 | Opened March 2005. ICD estimated from Google Maps linework. | 
| Sequim,
                WA Clallam Co. United States | N Sequim Ave. / Old Olympic Hwy. (48.09418, -123.10230) | Roundabout Existing | Unknown Unknown | 4 Approaches 0 Driveways 25.5265 | Other (At-Grade) Single-Lane | 2005 | Opened September 2005. ICD estimated from Google Maps linework. | 
| Sequim,
                WA Clallam Co. United States | W Washington St. / River Rd. (48.07758, -123.13480) | Roundabout Existing | Unknown Unknown | 4 Approaches 0 Driveways 31.9184 | Other (At-Grade) Single-Lane | 2004 | Opened June 2004. Northbound right turn bypass lane. ICD estimated from Google Maps linework. | 
| Spokane,
                WA Spokane Co. United States | E. Sharp Ave. / N. Columbus St. (47.66950, -117.39490) | Roundabout Existing | Unknown Unknown | 4 Approaches 0 Driveways 22.5195 | Other (At-Grade) Single-Lane | 1992 | September 1992. ICD estimated from Google Maps linework. | 
| Tacoma,
                WA Pierce Co. United States | 49th Ave. NE / 33rd St. NE / Norpoint Way NE (47.28643, -122.38220) | Roundabout Existing | Unknown Unknown | 4 Approaches 0 Driveways 25.9249 | Other (At-Grade) Single-Lane | 2004 | Opened December 2004. ICD estimated from Google Maps linework. | 
| Tacoma,
                WA Pierce Co. United States | S Tyler St. / S 66th St. (47.19746, -122.49280) | Roundabout Existing | Unknown Unknown | 4 Approaches 0 Driveways 25.9685 | Other (At-Grade) Single-Lane | 2005 | Opened July 2005. Fatal crash August 12. 2006. 11861-05. ICD estimated from Google Maps linework. | 
| Vancouver,
                WA Clark Co. United States | W. 6th St. / Esther St. (45.62572, -122.67610) | Roundabout Existing | Unknown Unknown | 4 Approaches 0 Driveways 29.2336 | Other (At-Grade) Single-Lane | 2005 | Opened June 2005. ICD estimated from Google Maps linework. | 
| Vancouver,
                WA Clark Co. United States | NE 137th Ave. / NE 49th St. (45.65733, -122.53190) | Roundabout Existing | Unknown Unknown | 4 Approaches 0 Driveways 40.0691 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2008 | Opened January 2008. ICD estimated from Google Maps linework. | 
| West Richland,
                WA Benton Co. United States | Bombing Range Rd. / Keene Rd. (46.26271, -119.34237) | Roundabout Existing | All-Way Yield Unknown | 4 Approaches 0 Driveways 45.7200 | Other (At-Grade) Single-Lane | 2005 | Free-flow bypass lane on east leg. Opened October 2005. Plans underway to replace with signalized intersection: https://www.tricitiesbusinessnews.com/2021/12/wr-traffic-circle/ | 
| White Center,
                WA King Co. United States | 10th Ave. SW / SW 100th St. (47.51379, -122.34770) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 12.1000 | Other (At-Grade) Single-lane w/ Traversable Central Island | 2006 | Opened April 2006. Previously controlled by two-way stop ICD estimated from Google Maps linework. | 
| White Center,
                WA King Co. United States | 9th Ave. SW / SW 100th St. (47.51379, -122.34640) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 14.5200 | Other (At-Grade) Single-lane w/ Traversable Central Island | 2006 | Opened April 2006. Previously controlled by two-way stop Functional Class: Neighborhood Collector ICD estimated from Google Maps linework. | 
| Woodinville,
                WA King Co. United States | 136th Ave. NE / Woodinville High School Entrance (47.77161, -122.15860) | Roundabout Existing | Unknown Unknown | 3 Approaches 0 Driveways 25.6862 | Other (At-Grade) Single-Lane | 2003 | Opened October 2003. ICD estimated from Google Maps linework. | 
| University Place,
                WA Pierce Co. United States | 64th St W / Park Entrance (47.19891, -122.56530) | Roundabout Existing | Unknown Unknown | 4 Approaches 0 Driveways 28.4022 | Other (At-Grade) Single-Lane | 2004 | Completed before July 2004. ICD estimated from Google Maps linework. | 
| University Place,
                WA Pierce Co. United States | Cirque Dr. W / Alameda Ave. W / 56th St. W (47.20639, -122.51600) | Roundabout Existing | Unknown Unknown | 4 Approaches 0 Driveways 54.3624 | Other (At-Grade) Single-Lane | 2002 | Completed December 2002. ICD estimated from Google Maps linework. | 
| University Place,
                WA Pierce Co. United States | 40th St. W / Drexler Dr. W (47.22084, -122.53430) | Roundabout Existing | Unknown Unknown | 3 Approaches 0 Driveways 31.6351 | Other (At-Grade) Single-Lane | 2006 | Completed June 2006. ICD estimated from Google Maps linework. | 
| Lacey,
                WA Thurston Co. United States | Vashon Dr. NE / Columbia Way NE (47.09724, -122.77000) | Roundabout Existing | Unknown Unknown | 4 Approaches 0 Driveways 26.0175 | Other (At-Grade) Single-Lane | 2005 | Opened December 2005. ICD estimated from Google Maps linework. | 
| Lacey,
                WA Thurston Co. United States | Britton Pkwy. NE / Gateway Blvd. (47.06858, -122.78590) | Roundabout Existing | All-Way Yield Unknown | 4 Approaches 0 Driveways 42.3012 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2007 | Opened September 2007. ICD estimated from Google Maps linework. | 
| Fruitland,
                MD Wicomico Co. United States | MD 513 Cedar Ln. / Division St. (38.32094, -75.61021) | Roundabout Existing | Unknown Unknown | 4 Approaches 0 Driveways 29.0471 | Other (At-Grade) Single-Lane | 2007 | ICD estimated from Google Maps linework. | 
| Saint Leonard,
                MD Calvert Co. United States | Calvert Beach Rd. / MD 765 Saint Leonard Rd. (38.47316, -76.50607) | Roundabout Existing | Unknown Unknown | 4 Approaches 0 Driveways 25.2460 | Other (At-Grade) Single-Lane | 2002 | ICD estimated from Google Maps linework. | 
| Hampstead,
                MD Carroll Co. United States | MD 88 / MD 833 (39.60434, -76.83682) | Roundabout Existing | Unknown Unknown | 4 Approaches 0 Driveways 34.0470 | Other (At-Grade) Single-Lane | 2004 | ICD estimated from Google Maps linework. | 
| Chaptico,
                MD St. Marys Co. United States | MD 234 / MD 238 (38.36791, -76.78179) | Roundabout Existing | Unknown Unknown | 4 Approaches 0 Driveways 35.5833 | Other (At-Grade) Single-Lane | 2007 | ICD estimated from Google Maps linework. | 
| Clarksville,
                MD Howard Co. United States | Brighton Dam Rd. / Ten Oaks Rd. (39.20491, -76.95455) | Roundabout Existing | Unknown Unknown | 3 Approaches 0 Driveways 35.1680 | Other (At-Grade) Single-Lane | 2008 | ICD estimated from Google Maps linework. | 
| Deale,
                MD Anne Arundel Co. United States | MD 256 / MD 258 (38.79327, -76.54586) | Roundabout Existing | Unknown Unknown | 3 Approaches 0 Driveways 34.4423 | Other (At-Grade) Single-Lane | 2006 | ICD estimated from Google Maps linework. | 
| Bel Air,
                MD Harford Co. United States | Constant Friendship Blvd. / BJ's (39.45546, -76.31870) | Roundabout Existing | Unknown Unknown | 3 Approaches 0 Driveways 29.5092 | Other (At-Grade) Single-Lane | 1995 | Functional Class: Local ICD estimated from Google Maps linework. | 
| Green Bay,
                WI Brown Co. United States | W Mason St. (STH 54) / STH 172 (Airport Dr.) (44.50001, -88.17641) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 54.8640 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2011 | Opened November 2011. | 
| Caledonia,
                WI Racine Co. United States | STH 38 / CTH K (Northwestern Ave.) (42.75957, -87.86417) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 35.9524 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2007 | Opened November 2007. Right-turn bypass lane. ICD estimated from Google Maps linework. | 
| Medford,
                WI Taylor Co. United States | STH 13 / Allman St. (45.14894, -90.33466) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 48.8545 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2011 | Opened October 2011. ICD estimated from Google Maps linework. | 
| Medford,
                WI Taylor Co. United States | STH 13 / Ann's Way (45.15473, -90.33393) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 53.9030 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2011 | Opened October 2011. ICD estimated from Google Maps linework. | 
| Dodgeville,
                WI Iowa Co. United States | US 18 / Bennett Rd. (42.96960, -90.11338) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 43.6954 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2008 | Opened October 7, 2008. ICD estimated from Google Maps linework. | 
| Oconomowoc,
                WI Waukesha Co. United States | Wisconsin Ave. / Walnut St. (43.10956, -88.49469) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 36.6205 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2008 | Opened August 15, 2008. ICD estimated from Google Maps linework. | 
| Lannon,
                WI Waukesha Co. United States | STH 74 (Main St.) / CTH V (Townline Dr.) / McLaughlin Rd. (43.13902, -88.18408) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 38.3459 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2008 | Opened November 15, 2008. ICD estimated from Google Maps linework. | 
| Green Bay,
                WI Brown Co. United States | US 141 / Atkinson Dr. (44.53348, -88.02827) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 37.4601 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2012 | Opened October 17, 2012. ICD estimated from Google Maps linework. | 
| Morro Bay,
                CA San Luis Obispo Co. United States | Morro Bay Blvd. / Quintana Rd. (35.36641, -120.84100) | Roundabout Existing | All-Way Yield Unknown | 3 Approaches 1 Driveways 31.1659 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2008 | ICD estimated from Google Maps linework. | 
| North Auburn,
                CA Placer Co. United States | Willow Creek / 1st St. (38.93790, -121.10060) | Roundabout Existing | Unknown Unknown | 4 Approaches 0 Driveways 38.0883 | Other (At-Grade) Single-Lane | 2007 | ICD estimated from Google Maps linework. | 
| Anacortes,
                WA Skagit Co. United States | Commercial Ave. / SR20 Spur (48.49332, -122.61280) | Roundabout Existing | Unknown Unknown | 3 Approaches 0 Driveways 34.8256 | Other (At-Grade) Single-Lane | 2009 | ICD estimated from Google Maps linework. | 
| Ladera Ranch,
                CA Orange Co. United States | Michael Rd. / Cambridge Ethereal Rd. (33.53294, -117.64460) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 26.8800 | Other (At-Grade) Single-Lane | 2006 | Functional Class: Local ICD estimated from Google Maps linework. | 
| San Diego,
                CA San Diego Co. United States | La Jolla Blvd. / Forward St. (32.81379, -117.26950) | Roundabout Existing | All-Way Yield Unknown | 4 Approaches 0 Driveways 22.0827 | Other (At-Grade) Single-Lane | 2008 | Series of 5 roundabouts. ICD estimated from Google Maps linework. | 
| Mecca,
                CA Riverside Co. United States | Hammond Rd. / 4th St. (33.57183, -116.07794) | Roundabout Existing | All-Way Yield At-grade Rail Crossing Signals/Gates (controlling approach only) | 3 Approaches 0 Driveways 39.6240 | Other (At-Grade) Single-Lane | 2013 | Double-track railroad with at-grade rail crossing on the southwest leg (4th Street) approximately 200 feet from the roundabout. A signalized intersection is located on the opposite side of the at-grade rail crossing approximately 230 feet from the rail crossing. Merging right-turn bypass lane on the southwest leg. | 
| Lexington Park,
                MD St. Marys Co. United States | Tate Rd. / Shaw Rd. (38.26955, -76.42012) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 31.8809 | Other (At-Grade) Single-Lane | 2005 | Y-shaped with right-turn bypass lanes. ICD estimated from Google Maps linework. | 
| Sammamish,
                WA King Co. United States | 244th Ave NE / NE 8th St (47.61673, -122.01390) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 33.0083 | Other (At-Grade) Single-Lane | 2010 | ICD estimated from Google Maps linework. | 
| Sammamish,
                WA King Co. United States | 244th Ave. NE / E Main Dr. (47.60881, -122.01390) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 22.5457 | Other (At-Grade) Single-Lane | 2010 | ICD estimated from Google Maps linework. | 
| Wenatchee,
                WA Chelan Co. United States | Riverside Dr. / 5th St. (47.43215, -120.31267) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 25.0455 | Other (At-Grade) Single-Lane | 2009 | October 2009. ICD estimated from Google Maps linework. | 
| Lynden,
                WA Whatcom Co. United States | SR 539 / Ten Mile Rd. (48.86968, -122.48580) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 46.3503 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2009 | ICD estimated from Google Maps linework. | 
| Lynden,
                WA Whatcom Co. United States | SR 539 / Pole Rd. (48.89152, -122.48560) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 47.1153 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2009 | ICD estimated from Google Maps linework. |