| City, 
                State County Country | Intersection (Lat, Lng) | Type Status | Control Type / Other Control Type | Approaches / Driveways / ICD (m) | Functional Class / LaneType | Year Completed | Comments | 
|---|---|---|---|---|---|---|---|
| Anchorage,
                AK Anchorage United States | W Dimond Blvd. / Sand Lake Rd. (61.13761, -149.98206) | Roundabout Existing | All-Way Yield None | 3 Approaches 1 Driveways 10.3772 | Other (At-Grade) Single-Lane | 2016 | ICD estimated from Google Maps linework. | 
| Anchorage,
                AK Anchorage United States | Elmore Rd. / Health Dr. (61.18629, -149.81008) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 50.6548 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2014 | ICD estimated from Google Maps linework. | 
| Anchorage,
                AK Anchorage United States | Piper St. / E 40th Ave. (61.18451, -149.82323) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 32.0040 | Other (At-Grade) Single-Lane | 2013 | Located at entrance to Providence Medical Center hospital. | 
| Portland,
                OR Multnomah Co. United States | SW 47th Dr. / SW 43rd Ave. (45.49245, -122.72111) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 54.4198 | Other (At-Grade) Single-lane w/ Traversable Central Island | 2007 | Completed 4/29/2007. Painted but unraised central island. No splitter islands. ICD estimated from Google Maps linework. | 
| Soldotna,
                AK Kenai Peninsula United States | S Binkley St. / Wilson Ln. (60.48344, -151.07215) | Roundabout Existing | All-Way Yield None | 3 Approaches 1 Driveways 20.0061 | Other (At-Grade) Single-lane w/ Traversable Central Island | 2014 | ICD estimated from Google Maps linework. | 
| Soldotna,
                AK Kenai Peninsula United States | N Binkley St. / W Redoubt Ave. (60.48781, -151.07231) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 20.0034 | Other (At-Grade) Single-lane w/ Traversable Central Island | 2014 | ICD estimated from Google Maps linework. | 
| Anchorage,
                AK Anchorage United States | Klatt Rd. / Johns Rd. (61.11584, -149.87879) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 38.0760 | Other (At-Grade) Single-Lane | 2017 | ICD estimated from Google Maps linework. | 
| Palmer,
                AK Matanuska-Susitna United States | Trunk Rd. / E Blue Lupine Dr. / Georgeson Rd. (61.56617, -149.26180) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 38.1010 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2010 | ICD estimated from Google Maps linework. | 
| Palmer,
                AK Matanuska-Susitna United States | Trunk Rd. / E Colony Schools Dr. (61.61298, -149.23757) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 50.5354 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2013 | ICD estimated from Google Maps linework. | 
| Wasilla,
                AK Matanuska-Susitna United States | Big Lake Rd. / W North Shore Dr. (61.55232, -149.81920) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 16.4988 | Other (At-Grade) Single-Lane | 2016 | ICD estimated from Google Maps linework. | 
| Wasilla,
                AK Matanuska-Susitna United States | Trunk Rd. / Parks Hwy SB Ramps / E Fireweed Rd. (61.56204, -149.26719) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 15.9249 | Freeway Ramps (Grade-Separated) Single-Lane | 2016 | ICD estimated from Google Maps linework. | 
| Wasilla,
                AK Matanuska-Susitna United States | W Seldon Rd. / N Lucille St. (61.61387, -149.45088) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 37.4746 | Other (At-Grade) Single-Lane | 2014 | ICD estimated from Google Maps linework. | 
| Nellis AFB,
                NV Clark Co. United States | Ellsworth Ave. / Fitzgerald Blvd. (36.24243, -115.04297) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 29.8608 | Other (At-Grade) Single-Lane | 2012 | ICD estimated from Google Maps linework. | 
| Overland Park,
                KS Johnson Co. United States | Switzer Rd. / W 113th St. (38.92484, -94.70984) | Roundabout Existing | All-Way Yield None | 3 Approaches 1 Driveways 44.5993 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2015 | ICD estimated from Google Maps linework. | 
| Rochester,
                MN Olmsted Co. United States | 50th Ave. NW / Badger Hills Dr. (44.06474, -92.53901) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 42.9095 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2009 | ICD estimated from Google Maps linework. | 
| Rochester,
                MN Olmsted Co. United States | Badger Hills Dr. / 46th Ave NW (44.06356, -92.53310) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 35.1865 | Other (At-Grade) Single-Lane | 2012 | Year Completed estimated (2011-2015). ICD estimated from Google Maps linework. | 
| Rochester,
                MN Olmsted Co. United States | Badger Hills Dr. / Superior Dr. NW (44.06325, -92.52762) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 35.1867 | Other (At-Grade) Single-Lane | 2013 | Year Completed estimated (2011-2015). ICD estimated from Google Maps linework. | 
| Rochester,
                MN Olmsted Co. United States | Badger Hills Dr. / (unknown) (44.06449, -92.53671) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 37.7605 | Other (At-Grade) Single-Lane | 2013 | Year Completed estimated (2011-2015). ICD estimated from Google Maps linework. | 
| Rochester,
                MN Olmsted Co. United States | Valleyhigh Rd. NW / 50th Ave. NW (44.05762, -92.53894) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 40.3398 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2015 | ICD estimated from Google Maps linework. | 
| Flower Mound,
                TX Denton Co. United States | Lakeside Pkwy. / Lakeside Village Blvd. (32.98574, -97.06503) | Roundabout Existing | All-Way Yield Unknown | 3 Approaches 0 Driveways 41.1480 | Other (At-Grade) Single-Lane | 2002 | . | 
| Frisco,
                TX Denton Co. United States | Cedar Ranch Rd. / Curwen Ln. (33.13301, -96.88910) | Roundabout Existing | All-Way Yield Unknown | 4 Approaches 0 Driveways 33.5268 | Other (At-Grade) Single-Lane | 2015 | . | 
| Williamsburg,
                MI Grand Traverse Co. United States | M-72 / Town Center Dr. (44.77303, -85.48476) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 47.4800 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2015 | ICD estimated from Google Maps linework. | 
| Williamsburg,
                MI Grand Traverse Co. United States | M-72 / Lautner Rd. (44.77274, -85.47563) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 47.4802 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2015 | ICD estimated from Google Maps linework. | 
| Williamsburg,
                MI Grand Traverse Co. United States | Lautner Rd. / Town Center Dr. (44.76912, -85.47565) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 25.4374 | Other (At-Grade) Single-Lane | 2015 | ICD estimated from Google Maps linework. | 
| Gorham,
                ME Cumberland Co. United States | New Portland Rd. / Libby Ave. / Brackett Rd. (43.67815, -70.41358) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 35.4148 | Other (At-Grade) Single-Lane | 2011 | ICD estimated from Google Maps linework. | 
| Augusta,
                ME Kennebec Co. United States | Rte 3 / I-95 NB Ramps (44.35353, -69.78083) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 46.1156 | Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified) | 2013 | ICD estimated from Google Maps linework. | 
| Augusta,
                ME Kennebec Co. United States | Rte 3 / I-95 SB Ramps / Old Belgrade Rd. (44.35796, -69.78470) | Roundabout Existing | All-Way Yield Unknown | 4 Approaches 0 Driveways 46.1121 | Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified) | 2013 | ICD estimated from Google Maps linework. | 
| Bangor,
                ME Penobscot Co. United States | Godfrey Blvd. / Maine Ave. (44.81370, -68.81322) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 44.9047 | Other (At-Grade) Single-Lane | 2012 | ICD estimated from Google Maps linework. | 
| Howland,
                ME Penobscot Co. United States | Coffin St. / Lagrange Rd. / River Rd. (45.23886, -68.66019) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 105.1237 | Other (At-Grade) Single-Lane | 2012 | Combined two one-way stop-controlled T-intersections and a new bridge alignment into a single-lane roundabout. ICD estimated from Google Maps linework. | 
| Windham,
                ME Cumberland Co. United States | River Rd. / Windham Center Rd. (43.79915, -70.44025) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 18.9647 | Other (At-Grade) Single-Lane | 2015 | ICD estimated from Google Maps linework. | 
| Hilliard,
                OH Franklin Co. United States | Britton Pkwy. / All Seasons Dr. / Lyman Ct. (40.03655, -83.13115) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 54.8640 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2013 | ICD = 180 ft in two-lane section, 160 feet in one-lane section. | 
| Bath,
                ME Sagadahoc Co. United States | State Rd. / Congress Ave. (43.90587, -69.83261) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 31.8381 | Other (At-Grade) Single-Lane | 2011 | ICD estimated from Google Maps linework. | 
| New Albany,
                OH Franklin Co. United States | Hamilton Rd. / (unknown 1) (40.07683, -82.85218) | Roundabout Existing | All-Way Yield Unknown | 4 Approaches 0 Driveways 43.8662 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2016 | ICD estimated from Google Maps linework. | 
| New Albany,
                OH Franklin Co. United States | Hamilton Rd. / Old Hamilton Rd. (40.07425, -82.86169) | Roundabout Existing | All-Way Yield Unknown | 4 Approaches 0 Driveways 54.8640 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2016 | Fatal crash Sept 24, 2020 involving motorcycle: https://abc6onyourside.com/news/local/motorcyclist-killed-in-crash-near-new-albany-9-24-20. | 
| New Albany,
                OH Franklin Co. United States | Fodor Rd. / New Albany Rd. (40.08818, -82.82324) | Roundabout Existing | All-Way Yield Unknown | 3 Approaches 0 Driveways 34.7216 | Other (At-Grade) Single-Lane | 2013 | Right-turn lanes on north and east legs. Year Completed estimated (2011-2014). ICD estimated from Google Maps linework. | 
| New Albany,
                OH Franklin Co. United States | US 62 (Johnstown Rd.-W Main St.) / Market St. (40.07993, -82.81385) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 32.8981 | Other (At-Grade) Single-Lane | 2014 | ICD estimated from Google Maps linework. | 
| New Albany,
                OH Franklin Co. United States | Reynoldsburg-New Albany Rd. / Morse Rd. (40.05310, -82.81014) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 41.1389 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2010 | High-speed rural approaches. ICD estimated from Google Maps linework. | 
| Columbus,
                OH Franklin Co. United States | US 62 (Johnstown Rd.) / Morse Rd. (40.05465, -82.84182) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 53.0222 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2008 | Skewed alignment realigned. High-speed rural approaches. Year Completed estimated (2007-2009). ICD estimated from Google Maps linework. | 
| Columbus,
                OH Franklin Co. United States | N Hamilton Rd. / Clark State Rd. (40.02397, -82.86595) | Roundabout Existing | All-Way Yield Rectangular Rapid Flashing Beacon (RRFB) | 3 Approaches 0 Driveways 45.7200 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2016 | |
| Columbus,
                OH Franklin Co. United States | N Hamilton Rd / Parc Dr. (40.03180, -82.86552) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 44.1960 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2016 | |
| Blue Hill,
                ME Hancock Co. United States | Beech Hill Rd. / Mines Rd. / Tenney Hill / South St. (44.40825, -68.59763) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 32.4214 | Other (At-Grade) Single-Lane | 2013 | ICD estimated from Google Maps linework. | 
| (unincorporated),
                OH Franklin Co. United States | Harlem Rd. / Smothers Rd. (40.12927, -82.84332) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 42.6720 | Other (At-Grade) Single-Lane | 2013 | Year Completed estimated (2011-2014). | 
| (unincorporated),
                OH Delaware Co. United States | Bale Kenyon Rd. / E Orange Rd. (40.17266, -82.96241) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 34.6785 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2011 | ICD estimated from Google Maps linework. | 
| (unincorporated),
                OH Delaware Co. United States | E Orange Rd. / Walker Wood Blvd. / Abbey Knoll Dr. (40.17312, -82.97326) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 27.3775 | Other (At-Grade) Single-Lane | 2011 | Right-turn-only lane on south leg. ICD estimated from Google Maps linework. | 
| (unincorporated),
                OH Delaware Co. United States | E Orange Rd. / Roespark Blvd. / (school entrance) (40.17355, -82.98272) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 30.4800 | Other (At-Grade) Single-Lane | 2011 | |
| (unincorporated),
                OH Delaware Co. United States | Olentangy River Rd. / W Orange Rd. / Carriage Rd. (40.17575, -83.04679) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 45.7200 | Other (At-Grade) Single-Lane | 2013 | Year Completed estimated (2011-2014). | 
| (unincorporated),
                OH Delaware Co. United States | Riverside Dr. / Home Rd. (40.19746, -83.13604) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 49.2619 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2014 | ICD estimated from Google Maps linework. | 
| (unincorporated),
                OH Delaware Co. United States | Home Rd. / S Section Line Rd. (40.19766, -83.13407) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 50.1740 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2014 | ICD estimated from Google Maps linework. | 
| Columbus,
                OH Franklin Co. United States | Groveport Rd. / Old Rathmell Ct. / Alum Creek Dr. access (39.86733, -82.93329) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 44.9175 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2013 | Part of intersection complex with grade separation. Right-turn bypass lane on south leg. Year Completed estimated (2012-2014). ICD estimated from Google Maps linework. | 
| Columbus,
                OH Franklin Co. United States | Groveport Rd. / Alum Creek Rd. access / (parking lot) (39.86872, -82.93737) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 37.5833 | Other (At-Grade) Single-Lane | 2013 | Right-turn bypass lane on west leg. Year Completed estimated (2012-2014). ICD estimated from Google Maps linework. | 
| Dublin,
                OH Franklin Co. United States | Emerald Pkwy. / Lakehurst Ct. (40.07730, -83.14146) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 44.7797 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2012 | Year Completed estimated (2011-2014). ICD estimated from Google Maps linework. | 
| Dublin,
                OH Franklin Co. United States | Emerald Pkwy. / Glendon Ct. (40.08085, -83.14136) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 43.8636 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2012 | Year Completed estimated (2011-2014). ICD estimated from Google Maps linework. | 
| Dublin,
                OH Franklin Co. United States | Perimeter Dr. / Commerce Pkwy. (40.10266, -83.14083) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 41.1089 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2011 | ICD estimated from Google Maps linework. | 
| Dublin,
                OH Franklin Co. United States | Brand Rd. / Coffman Rd. (40.11862, -83.13164) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 34.7061 | Other (At-Grade) Single-Lane | 2013 | Year Completed estimated (2011-2014). Right-turn bypass lane on west leg. ICD estimated from Google Maps linework. | 
| Dublin,
                OH Franklin Co. United States | Emerald Pkwy. / Sawbury Blvd. (40.11414, -83.09613) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 34.7083 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2015 | ICD estimated from Google Maps linework. | 
| Plain City,
                OH Union Co. United States | SR 161 (Post Rd) / Old US Hwy 33 (40.11015, -83.18304) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 57.5462 | Other (At-Grade) Multilane (3+ Lane) | 2015 | ICD estimated from Google Maps linework. | 
| Dublin,
                OH Franklin Co. United States | Cosgray Rd. / Shier Rings Rd. (40.09346, -83.18686) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 42.9418 | Other (At-Grade) Single-Lane | 2013 | Right-turn-only lane on west leg. Year Completed estimated (2011-2014). ICD estimated from Google Maps linework. | 
| Dublin,
                OH Franklin Co. United States | SR 161 (W Dublin Granville Rd.-E Bridge St.) / Riverside Dr. (US 33-SR 257) (40.09964, -83.10936) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 70.1040 | Other (At-Grade) Multilane (3+ Lane) | 2016 | Modified 2018 to reduce lane configuration. https://www.thisweeknews.com/news/20191022/dublin-officials-say-161-riverside-roundabout-fixes-lessen-crashes . 21442 | 
| Dublin,
                OH Franklin Co. United States | Village Pkwy. / Shamrock Blvd. (40.10226, -83.09686) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 33.8009 | Other (At-Grade) Single-Lane | 2008 | Year Completed estimated (2007-2009). ICD estimated from Google Maps linework. | 
| Henderson,
                CO Adams Co. United States | E 96th Ave. / I-76 NB Ramps / Brighton Rd. / I-76 Frontage Rd. (39.87074, -104.90024) | Roundabout Existing | All-Way Yield Unknown | 5 Approaches 0 Driveways 68.7479 | Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified) | 2009 | Year Completed estimated (2008-2010). ICD estimated from Google Maps linework. | 
| Henderson,
                CO Adams Co. United States | E 96th Ave. / I-76 WB Ramps / Brighton Rd. / I-76 Service Rd. (39.87079, -104.90301) | Roundabout Existing | All-Way Yield None | 5 Approaches 0 Driveways 65.0813 | Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified) | 2009 | Year Completed estimated (2008-2010). ICD estimated from Google Maps linework. | 
| Brighton,
                CO Adams Co. United States | Bromley Ln. / Medical Center Dr. (39.97238, -104.75449) | Roundabout Existing | All-Way Yield Unknown | 4 Approaches 0 Driveways 40.2723 | Other (At-Grade) Single-Lane | 2008 | Year Completed estimated (2008-2010). ICD estimated from Google Maps linework. | 
| Centennial,
                CO Arapahoe Co. United States | S Peoria St. / E Peakview Ave. (39.59674, -104.84809) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 36.8116 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2013 | ICD estimated from Google Maps linework. | 
| Glen Ellyn,
                IL DuPage Co. United States | Crescent Blvd. / Crescent Ct. / Park Row (41.87975, -88.05899) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 24.9936 | Other (At-Grade) Single-Lane | 2015 | Compact urban roundabout - T-intersection with fourth leg between top and stem of T. Providing a means for legal U-turns was an important factor in selection of a roundabout here. | 
| McKinleyville,
                CA Humboldt Co. United States | School Rd. / Salmon Ave. / McKinleyville Ave. (40.93439, -124.11240) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 27.0680 | Other (At-Grade) Single-Lane | 2013 | Year Completed estimated (2012-2014). ICD estimated from Google Maps linework. | 
| San Luis Obispo,
                CA San Luis Obispo Co. United States | Madonna Rd. / Devaul Ranch Dr. (35.25454, -120.69548) | Roundabout Existing | All-Way Yield None | 3 Approaches 1 Driveways 21.4562 | Other (At-Grade) Single-Lane | 2001 | Year Completed estimated (1994-2002). ICD estimated from Google Maps linework. | 
| San Luis Obispo,
                CA San Luis Obispo Co. United States | Prado Rd. / Serra Meadows Dr. (35.25402, -120.66256) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 50.2920 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2015 | |
| San Luis Obispo,
                CA San Luis Obispo Co. United States | Margarita Ave. / Cherry Ln. (35.25603, -120.66104) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 30.4800 | Other (At-Grade) Single-Lane | 2014 | |
| (unincorporated),
                OH Delaware Co. United States | Cheshire Rd. / TR 35 (40.23802, -82.93950) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 39.6240 | Other (At-Grade) Single-Lane | 2013 | Rural, high-speed approaches. Year Completed estimated (2011-2014). | 
| Vancouver,
                WA Clark Co. United States | NE 44th St. / NE 137th Ave. (45.65377, -122.53207) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 25.8796 | Other (At-Grade) Single-Lane | 2013 | ICD estimated from Google Maps linework. | 
| (unincorporated),
                OH Delaware Co. United States | Sawmill Pkwy. / Clark Shaw Rd (40.22808, -83.09516) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 41.9449 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2016 | ICD estimated from Google Maps linework. | 
| (unincorporated),
                OH Delaware Co. United States | Sawmill Pkwy. / Bean Oller Rd. (40.23539, -83.09539) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 47.4108 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2016 | ICD estimated from Google Maps linework. | 
| Vancouver,
                WA Clark Co. United States | NE 39th St. / NE 137th Ave. / NE 138th Ave. (45.65025, -122.53209) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 38.4044 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2013 | ICD estimated from Google Maps linework. | 
| (unincorporated),
                OH Delaware Co. United States | Sawmill Pkwy. / Ford Rd. (40.24463, -83.09368) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 42.8463 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2016 | ICD estimated from Google Maps linework. | 
| (unincorporated),
                OH Delaware Co. United States | Sawmill Pkwy. / Bunty Station Rd. (40.25373, -83.09134) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 47.3980 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2016 | ICD estimated from Google Maps linework. | 
| Vancouver,
                WA Clark Co. United States | NE 32nd Cir. / NE 138th Ave. (45.64517, -122.53057) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 40.0778 | Other (At-Grade) Single-Lane | 2013 | ICD estimated from Google Maps linework. | 
| Wooster,
                OH Wayne Co. United States | SR 83 (Burbank Rd.) / W Smithville Western Rd. (40.85801, -81.95140) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 45.7200 | Other (At-Grade) Single-Lane | 2016 | Completed August 2016. | 
| Dublin,
                OH Union Co. United States | Hyland Croy Rd. / Mitchell Dewitt Rd. (40.13341, -83.17931) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 43.8297 | Other (At-Grade) Single-Lane | 2013 | Right-turn-only lanes on north and south legs. Year Completed estimated (2011-2014). ICD estimated from Google Maps linework. | 
| Vancouver,
                WA Clark Co. United States | NE 18th St. / I-205 SB On Ramp (45.63554, -122.56193) | Roundabout Existing | All-Way Yield None | 2 Approaches 0 Driveways 33.4039 | Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified) | 2016 | ICD estimated from Google Maps linework. | 
| (unincorporated),
                OH Delaware Co. United States | Home Rd. / Concord Rd. (40.19585, -83.16441) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 34.6666 | Other (At-Grade) Single-Lane | 2013 | Year Completed estimated (2011-2014). ICD estimated from Google Maps linework. | 
| Ridgefield,
                WA Clark Co. United States | NW 319th St. / NW 31st Ave. (45.85093, -122.70594) | Roundabout Existing | All-Way Yield Unknown | 4 Approaches 0 Driveways 48.7680 | Other (At-Grade) Multilane (2 Lane, 2x1 max) | 2017 | Part of Ilani Casino interchange project. | 
| Ridgefield,
                WA Clark Co. United States | NW 319th St. / I-5 SB Ramps (45.85163, -122.70380) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 48.7680 | Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified) | 2017 | Part of Ilani Casino interchange project. | 
| Ridgefield,
                WA Clark Co. United States | NW La Center Rd. / I-5 NB Ramps (45.85214, -122.70160) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 51.8160 | Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified) | 2017 | Part of Ilani Casino interchange project. | 
| Camas,
                WA Clark Co. United States | NW 6th Ave. / SR 14 WB Ramps / NW Norwood St. (45.58216, -122.42684) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 44.1960 | Freeway Ramps (Grade-Separated) Single-Lane | 2016 | |
| Southlake,
                TX Tarrant Co. United States | Bicentennial Dr. / Unity Way (32.94346, -97.15686) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 30.4800 | Unknown Single-Lane | 2010 | . | 
| Santa Fe,
                NM Santa Fe Co. United States | W Alameda St. / Siler Rd. (35.66924, -105.99951) | Roundabout Existing | All-Way Yield Unknown | 3 Approaches 1 Driveways 32.0189 | Other (At-Grade) Single-Lane | 2011 | ICD estimated from Google Maps linework. | 
| Larkspur,
                CO Douglas Co. United States | Bear Dance Dr. / Sky View Ln. / Elk View Rd. / Lake Dr. (39.27054, -104.90711) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 31.4367 | Other (At-Grade) Single-Lane | 2003 | Year Completed estimated (2002-2004). ICD estimated from Google Maps linework. | 
| (unincorporated),
                CO Douglas Co. United States | Meridian Village Pkwy. / Bristleridge Dr. (39.53102, -104.82616) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 43.2946 | Other (At-Grade) Single-Lane | 2006 | ICD estimated from Google Maps linework. | 
| (unincorporated),
                CO Douglas Co. United States | Meridian Village Pkwy. / Ashgrove Dr. (39.52786, -104.82450) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 42.3754 | Other (At-Grade) Single-Lane | 2006 | ICD estimated from Google Maps linework. | 
| (unincorporated),
                CO Douglas Co. United States | Meridian Village Pkwy. / Rutledge Ln. (39.52471, -104.82329) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 41.4561 | Other (At-Grade) Single-Lane | 2006 | ICD estimated from Google Maps linework. | 
| (unincorporated),
                CO Douglas Co. United States | W Happy Canyon Rd. / Castle Pines Dr. (39.42838, -104.90106) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 25.8306 | Other (At-Grade) Single-Lane | 2011 | ICD estimated from Google Maps linework. | 
| (unincorporated),
                CO Douglas Co. United States | Happy Canyon Rd. / Castle Pines Dr. S (39.43975, -104.88723) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 34.1278 | Other (At-Grade) Single-Lane | 2011 | ICD estimated from Google Maps linework. | 
| (unincorporated),
                CO Douglas Co. United States | Fox Sparrow Rd. / Windhaven Dr. (39.43781, -104.73199) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 26.7495 | Other (At-Grade) Single-Lane | 1998 | Year Completed estimated (1993-1999). ICD estimated from Google Maps linework. | 
| (unincorporated),
                CO Douglas Co. United States | Lioness Way / Lioness Pl. (39.53520, -104.84861) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 40.5287 | Other (At-Grade) Single-Lane | 2005 | ICD estimated from Google Maps linework. | 
| Dothan,
                AL Houston Co. United States | Recreation Rd. / Northcutt Dr. (31.24127, -85.44014) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 22.4651 | Other (At-Grade) Single-Lane | 2007 | ICD estimated from Google Maps linework. | 
| Littleton,
                CO Jefferson Co. United States | S Union Ct. / S Ida Ave. (39.61175, -105.13316) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 34.0433 | Other (At-Grade) Single-Lane | 2006 | ICD estimated from Google Maps linework. | 
| Littleton,
                CO Jefferson Co. United States | S Zang St. / Robert Easton Park (39.60735, -105.14731) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 27.6044 | Other (At-Grade) Single-Lane | 2006 | 3rd leg added around 2012, Built for future 4th Leg. ICD estimated from Google Maps linework. | 
| Birmingham,
                AL Jefferson Co. United States | Liberty Pkwy. / Lake Pkwy. (33.47937, -86.67624) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 27.8928 | Other (At-Grade) Single-Lane | 2000 | Year Completed estimated (1998-2002). ICD estimated from Google Maps linework. | 
| Windermere,
                FL Orange Co. United States | Main St. / 5th Ave. (28.49567, -81.53498) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 32.0040 | Other (At-Grade) Single-Lane | 2005 | |
| Windermere,
                FL Orange Co. United States | Main St. / 6th Ave. (28.49445, -81.53457) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 34.1376 | Other (At-Grade) Single-Lane | 2005 | Previous control type estimated. |