| City, 
                State County Country | Intersection (Lat, Lng) | Type Status | Control Type / Other Control Type | Approaches / Driveways / ICD (m) | Functional Class / LaneType | Year Completed | Comments | 
|---|---|---|---|---|---|---|---|
| Royalton,
                IL Franklin Co. United States | SR 149 (N Main St.) / SR 184 (37.89199, -89.11396) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-Lane | 2022 | Replaced triangular intersection. https://www.facebook.com/photo/?fbid=782341056078810&set=a.659310081715242 | 
| Rockford,
                IL Winnebago Co. United States | Seminary St. / College Ave. (42.26161, -89.09051) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 34.4721 | Other (At-Grade) Single-Lane | 2013 | Right-turn bypass lane on west leg. ICD estimated from Google Maps linework. | 
| Gulfport,
                MS Harrison Co. United States | Airport Rd. / Three Rivers Rd. (30.42002, -89.08860) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 66.9444 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2016 | ICD estimated from Google Maps linework. | 
| Gulfport,
                MS Harrison Co. United States | 20th Ave. / Jones Park Dr. (30.36646, -89.08605) | Other Existing | All-Way Yield None | 3 Approaches 0 Driveways 0.0000 | Other (At-Grade) Multilane (2 Lane, 2x1 max) | Pedestrian access to central island. | |
| Rockford,
                IL Winnebago Co. United States | N Main St. / Auburn St. (42.28863, -89.08024) | Roundabout Existing | All-Way Yield Unknown | 4 Approaches 0 Driveways 45.7200 | Other (At-Grade) Single-Lane | 2013 | Originally built in 2013 as multilane 2x2 roundabout. Reduced from multilane 2x2 to single-lane roundabout in 2024: https://www.wifr.com/2024/05/17/main-auburn-st-roundabout-rockford-reduce-lanes/ | 
| Waupaca,
                WI Waupaca Co. United States | STH 22 / STH 54 (Royalton St.) (44.35154, -89.03481) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 36.7229 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2008 | Right turn bypass lane. Opened September 2008. ICD estimated from Google Maps linework. | 
| Fulton,
                WI Rock Co. United States | STH 59 / I-39 SB Ramps (42.83635, -89.02979) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 53.4238 | Freeway Ramps (Grade-Separated) Single-Lane | 2016 | ICD estimated from Google Maps linework. | 
| Fulton,
                WI Rock Co. United States | STH 59 / I-39 NB Ramps (42.83577, -89.02705) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 45.5420 | Freeway Ramps (Grade-Separated) Single-Lane | 2016 | ICD estimated from Google Maps linework. | 
| Fulton,
                WI Rock Co. United States | STH 59 / E Richardson Springs Rd. / N Goede Rd. (42.83490, -89.02549) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 54.3008 | Other (At-Grade) Single-Lane | 2016 | Previously had I-39 NB Ramps attached; these have been relocated to new roundabout to the west of this roundabout. ICD estimated from Google Maps linework. | 
| North Utica,
                IL La Salle Co. United States | US 6 / SR 178 (41.36088, -89.01022) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-Lane | 2023 | https://www.shawlocal.com/news-tribune/2023/04/20/utica-roundabout-is-functional-and-open/ | 
| Janesville,
                WI Rock Co. United States | Morse St. / Menards Access (42.72334, -88.99679) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 33.3412 | Other (At-Grade) Single-Lane | 2007 | Functional Class: Local ICD estimated from Google Maps linework. | 
| Machesney Park,
                IL Winnebago Co. United States | Swanson Rd. / Perryville Rd. (42.39150, -88.99469) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 32.6369 | Other (At-Grade) Single-Lane | 2008 | Year Completed estimated (2007-2009). ICD estimated from Google Maps linework. | 
| Janesville,
                WI Rock Co. United States | E Racine St. / I-90 EB-I-39 SB Ramps (42.67098, -88.98493) | Roundabout Existing | All-Way Yield Unknown | 3 Approaches 0 Driveways 51.8102 | Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified) | 2013 | Replaced cloverleaf interchange. ICD estimated from Google Maps linework. | 
| Normal,
                IL McLean Co. United States | Beaufort St. / North St. (40.50929, -88.98440) | Other Existing | All-Way Yield None | 4 Approaches 0 Driveways 54.8640 | Other (At-Grade) Single-Lane | 2009 | Both a traffic solution and centerpiece for significant downtown redevelopment. Pedestrian access to central island. Completed Fall 2009. https://www.landscapeperformance.org/case-study-briefs/uptown-normal-circle-and-streetscape | 
| Janesville,
                WI Rock Co. United States | E Racine St. / I-90 WB-I-39 NB Ramps (42.67077, -88.98221) | Roundabout Existing | All-Way Yield Unknown | 3 Approaches 0 Driveways 55.3230 | Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified) | 2013 | Replaced cloverleaf interchange. ICD estimated from Google Maps linework. | 
| Beloit,
                WI Rock Co. United States | Millington Rd. / Kerry America Corp. Entrance (42.52895, -88.97019) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 32.5653 | Other (At-Grade) Single-Lane | 2008 | Opened November 2008. ICD estimated from Google Maps linework. | 
| Janesville,
                WI Rock Co. United States | Sandhill Dr. / Sandstone Dr. (42.71610, -88.95860) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 28.0801 | Other (At-Grade) Single-Lane | 2006 | ICD estimated from Google Maps linework. | 
| Rockford,
                IL Winnebago Co. United States | Lyford Rd. / (medical center entrance) (42.31307, -88.95526) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 60.9600 | Other (At-Grade) Single-Lane | 2018 | Yielding right-turn bypass lanes on south and east legs. Year Completed estimated (2018-2019). | 
| Janesville,
                WI Rock Co. United States | N Harmony Town Hall Rd. / STH 26 SB Ramps (42.75331, -88.95426) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 39.6240 | Freeway Ramps (Grade-Separated) Single-Lane | 2012 | Interchange replaced single at-grade two-way stop-controlled intersection. | 
| Janesville,
                WI Rock Co. United States | N Harmony Town Hall Rd. / STH 26 NB Ramps (42.75114, -88.95416) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 39.6240 | Freeway Ramps (Grade-Separated) Single-Lane | 2012 | Interchange replaced single at-grade two-way stop-controlled intersection. | 
| West Frankfort,
                IL Franklin Co. United States | SR 149 / Ken Gray Blvd. / West Frankfort Plaza (37.89743, -88.95243) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 39.6240 | Other (At-Grade) Single-Lane | 2022 | Year Completed estimated (2021-2023). | 
| Beloit,
                WI Rock Co. United States | E Hart Rd. / I-43 SB Ramps (42.54142, -88.94933) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 36.0787 | Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified) | 2009 | Opened October 2009. Series of 3 roundabouts. Right turn bypass lane. ICD estimated from Google Maps linework. | 
| Beloit,
                WI Rock Co. United States | E Hart Rd. / I-43 NB Ramps (42.53960, -88.94841) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 31.6798 | Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified) | 2009 | Opened October 2009. Series of 3 roundabouts. Right turn bypass lane. ICD estimated from Google Maps linework. | 
| Marion,
                IL Williamson Co. United States | Morgan Ave. (The Hill) / N Carbon St. (37.74458, -88.94792) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 48.7680 | Other (At-Grade) Single-Lane | 2019 | https://local.nixle.com/alert/7707046/ | 
| Beloit,
                WI Rock Co. United States | E Hart Rd. / CTH X / Gateway Blvd. (42.53840, -88.94769) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 38.7205 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2009 | Opened October 2009. Series of 3 roundabouts. ICD estimated from Google Maps linework. | 
| Biloxi,
                MS Harrison Co. United States | Ellzey Dr. / Medical Park Dr. (30.44652, -88.94459) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 33.5280 | Other (At-Grade) Single-Lane | 2018 | Circulatory roadway dotted edge line across exits. Year Completed estimated (2017-2019). | 
| Marion,
                IL Williamson Co. United States | N Russell St. / W Boulevard St. (37.73692, -88.94186) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 19.8347 | Other (At-Grade) Single-Lane | 2015 | date: https://www.kfvs12.com/story/29497509/marion-to-install-roundabout-at-busy-intersection/ ICD estimated from Google Maps linework. | 
| Marion,
                IL Williamson Co. United States | SR 37 (S Court St.) / Wildcat Dr. (37.71570, -88.93259) | Roundabout Existing | All-Way Yield Unknown | 3 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-Lane | 2025 | https://www.wsiltv.com/news/illinois/new-roundabout-opens-in-marion-aims-to-improve-traffic-flow/article_e5f55514-45cd-4340-94f6-566d89fdf4c2.html | 
| Bloomington,
                IL McLean Co. United States | Royal Pointe Dr / Brighton Ln (40.49004, -88.93106) | Traffic Calming Circle Existing | Other None | 4 Approaches 0 Driveways 55.4069 | Other (At-Grade) Single-Lane | 1997 | Year Completed estimated (1994-1999). ICD estimated from Google Maps linework. | 
| Bloomington,
                IL McLean Co. United States | Royal Pointe Dr. / Arrowhead Dr. (40.49332, -88.93045) | Traffic Calming Circle Removed | Other None | 4 Approaches 0 Driveways | Other (At-Grade) Single-Lane | 2014 | Removed sometime between 2012 and 2015. | 
| Milton,
                WI Rock Co. United States | STH 59 / STH 26 SB Ramps (42.76911, -88.92484) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 39.6240 | Freeway Ramps (Grade-Separated) Single-Lane | 2009 | Opened October 2009. | 
| Milton,
                WI Rock Co. United States | STH 59 / STH 26 NB Ramps (42.76902, -88.92310) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 39.6240 | Freeway Ramps (Grade-Separated) Single-Lane | 2009 | Opened October 2009. | 
| Milton,
                WI Rock Co. United States | STH 59 / CTH M (42.76886, -88.91364) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 31.5632 | Other (At-Grade) Single-Lane | 2009 | Opened October 2009. ICD estimated from Google Maps linework. | 
| D'Iberville,
                MS Harrison Co. United States | MS Hwy 15 / Lamey Bridge Rd. (30.49431, -88.90603) | Roundabout Existing | All-Way Yield Unknown | 4 Approaches 0 Driveways 42.6720 | Other (At-Grade) Single-Lane | 2018 | Add-lane right-turn bypass lane on west leg; yield-controlled right-turn bypass lanes on north and south legs. Fatal crash Monday February 7, 2022: https://www.sunherald.com/news/local/counties/harrison-county/article258139973.html | 
| Biloxi,
                MS Harrison Co. United States | Division St. / Forrest Ave. (30.40358, -88.90335) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 57.9120 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2020 | https://www.wlox.com/2020/12/10/keeslers-division-street-gate-could-be-open-early-winter/ | 
| Jackson,
                TN Madison Co. United States | N Highland Ave. / Deaderick St. (35.61967, -88.81928) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 45.7200 | Other (At-Grade) Multilane (2 Lane, 2x1 max) | 2018 | Painted spirals next to central island. https://www.jacksonsun.com/story/news/local/2018/05/11/construction-continues-north-highland-roundabout/578801002/ | 
| Starkville,
                MS Oktibbeha Co. United States | Blackjack Rd. / Oktoc Rd. (33.44708, -88.79340) | Roundabout Existing | Unknown Unknown | 3 Approaches 0 Driveways 31.8893 | Other (At-Grade) Single-Lane | 2002 | http://www.msstate.edu/web/media/detail.php?id=1874 Previously controlled by two-way stop Functional Class: Arterial ICD estimated from Google Maps linework. | 
| Ocean Springs,
                MS Jackson Co. United States | Ocean Springs Rd. / Groveland Rd. / Gulf Island National Seashore Rd. (30.41371, -88.77918) | Roundabout Existing | All-Way Yield Unknown | 4 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-Lane | 2024 | https://www.oceanspringsweeklyrecord.com/local_news/and-around-we-go-os-road-roundabout-open-to-traffic-in-time-for-the-holidays/article_6f02eea2-bfe7-11ef-a11a-47671c82f774.html | 
| Watertown,
                WI Jefferson Co. United States | W Main St. (STH 19) / STH 26 SB Ramps (43.19772, -88.76804) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 35.6971 | Freeway Ramps (Grade-Separated) Single-Lane | 2010 | ICD estimated from Google Maps linework. | 
| Watertown,
                WI Jefferson Co. United States | W Main St. (STH 19) / STH 26 NB Ramps (43.19772, -88.76607) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 38.3091 | Freeway Ramps (Grade-Separated) Single-Lane | 2010 | ICD estimated from Google Maps linework. | 
| Watertown,
                WI Jefferson Co. United States | E Horseshoe Rd. / CTH T (43.19009, -88.76381) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 32.2185 | Other (At-Grade) Single-Lane | 2007 | ICD estimated from Google Maps linework. | 
| Watertown,
                WI Jefferson Co. United States | E Horseshoe Rd. / CTH A (Milford St.) (43.16401, -88.76087) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 39.2014 | Other (At-Grade) Single-Lane | 2010 | ICD estimated from Google Maps linework. | 
| Watertown,
                WI Jefferson Co. United States | Jefferson Rd. / CTH Y (43.15325, -88.75062) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 36.5944 | Other (At-Grade) Single-Lane | 2010 | Near railroad crossing. ICD estimated from Google Maps linework. | 
| Watertown,
                WI Jefferson Co. United States | E Horseshoe Rd. / Jefferson Rd. (43.15839, -88.74851) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 31.3640 | Other (At-Grade) Single-Lane | 2010 | ICD estimated from Google Maps linework. | 
| Whitewater,
                WI Jefferson Co. United States | Burr Oak Trl. / N Acorn Ridge (42.85569, -88.74258) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 30.6434 | Other (At-Grade) Single-Lane | 2007 | Opened October 2007. Functional Class: Local ICD estimated from Google Maps linework. | 
| Watertown,
                WI Jefferson Co. United States | CTH Y (S Church St.) / STH 26 SB Ramps (43.15450, -88.74223) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 38.3362 | Freeway Ramps (Grade-Separated) Single-Lane | 2011 | ICD estimated from Google Maps linework. | 
| Watertown,
                WI Jefferson Co. United States | CTH Y (S Church St.) / STH 26 NB Ramps (43.15562, -88.74126) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 35.7217 | Freeway Ramps (Grade-Separated) Single-Lane | 2011 | ICD estimated from Google Maps linework. | 
| Whitewater,
                WI Jefferson Co. United States | Burr Oak Trl. / (unknown) (42.85222, -88.74105) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 29.7695 | Other (At-Grade) Single-Lane | 2007 | Opened November 2007. Functional Class: Local ICD estimated from Google Maps linework. | 
| Dale,
                WI Outagamie Co. United States | US 45 / STH 96 (Wisconsin Rd.) (44.27234, -88.73946) | Roundabout Existing | All-Way Yield Unknown | 4 Approaches 0 Driveways 35.0622 | Other (At-Grade) Single-Lane | 2018 | date: https://www.whby.com/2018/04/15/roundabout-project-to-start-at-hwys-45-96/# ICD estimated from Google Maps linework. | 
| Watertown,
                WI Dodge Co. United States | BUS 26 (N Church St.) / STH 16 WB Ramps / Provimi Rd. (43.21918, -88.73837) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 43.5177 | Freeway Ramps (Grade-Separated) Single-Lane | 2011 | ICD estimated from Google Maps linework. | 
| Watertown,
                WI Dodge Co. United States | BUS 26 (N Church St.) / STH 16 EB Ramps (43.21605, -88.73625) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 38.2976 | Freeway Ramps (Grade-Separated) Single-Lane | 2011 | ICD estimated from Google Maps linework. | 
| Watertown,
                WI Jefferson Co. United States | BUS 26 (S Church St.) / High Rd. (43.16088, -88.73526) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 41.8169 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2011 | ICD estimated from Google Maps linework. | 
| De Kalb,
                IL DeKalb Co. United States | Health Services Dr. / (unknown) / (parking lot) (41.96413, -88.72497) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 39.0746 | Other (At-Grade) Single-Lane | 2011 | Year Completed estimated (2010-2011). ICD estimated from Google Maps linework. | 
| De Kalb,
                IL DeKalb Co. United States | E Gurler Rd. / N Peace Rd. (41.89286, -88.72396) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-Lane | 2020 | https://www.facebook.com/1360WlbkRadio/posts/wlbk-local-newsdekalbs-new-roundabout-is-opening-soon-dekalb-city-manager-bill-n/3211580668940104/ | 
| Whitewater,
                WI Walworth Co. United States | BUS 12-STH 59 (E Milwaukee St.-Elkhorn Rd.) / Bluff Rd. / Clay St. (42.83102, -88.71045) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 33.2833 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2007 | Opened October 2007. ICD estimated from Google Maps linework. | 
| Paducah,
                KY McCracken Co. United States | (unknown) / (unknown) (37.07051, -88.70338) | Roundabout Existing | All-Way Yield None | 4 Approaches 1 Driveways 39.6240 | Other (At-Grade) Single-Lane | 2017 | External truck apron on northeast leg. Year Completed estimated (2015-2018). | 
| Hortonville,
                WI Outagamie Co. United States | STH 15 /  CR T (44.34801, -88.67547) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 60.9600 | Other (At-Grade) Multilane (2 Lane, 2x1 max) | 2024 | Year Completed estimated (2023-2024). https://projects.511wi.gov/wis15expand/full-project-overview/ | 
| Pontiac,
                IL Livingston Co. United States | Belmont Rd. / (parking) (40.87097, -88.66806) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 42.6720 | Other (At-Grade) Single-Lane | 2021 | Year Completed estimated (2019-2022). | 
| Gautier,
                MS Jackson Co. United States | N Dolphin Dr. / William Payne Adams Blvd. / (unknown) (30.39643, -88.65932) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 39.1462 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2013 | ICD estimated from Google Maps linework. | 
| Keshena,
                WI Menominee Co. United States | STH 47-STH 55 / Standing Pines Dr. (44.85970, -88.62769) | Roundabout Existing | All-Way Yield Unknown | 3 Approaches 0 Driveways 26.2441 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2018 | https://www.google.com/maps/d/viewer?mid=1kRgB04jjoXd6tLLe0r20FJoxJMI&ll=44.859088195652475%2C-88.62733226609475&z=17 ICD estimated from Google Maps linework. | 
| Marengo,
                IL McHenry Co. United States | SR 23 / Harmony Rd. (42.18243, -88.61803) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 45.7200 | Other (At-Grade) Single-Lane | 2020 | Yield-controlled right-turn bypass lane on north leg. | 
| Marengo,
                IL McHenry Co. United States | SR 23 / I-90 WB Ramps (42.17930, -88.61798) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 45.7200 | Freeway Ramps (Grade-Separated) Single-Lane | 2020 | Yield-controlled right turn bypass lane on east leg off freeway exit ramp. Merging right turn bypass lane on south leg onto freeway entrance ramp. | 
| Marengo,
                IL McHenry Co. United States | SR 23 / I-90 EB Ramps (42.17539, -88.61798) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 45.7200 | Freeway Ramps (Grade-Separated) Single-Lane | 2020 | Yield-controlled right turn bypass lane on east leg off freeway exit ramp. Merging right turn bypass lane on south leg onto freeway entrance ramp. | 
| Hortonville,
                WI Outagamie Co. United States | STH 15 (Greenville Dr.) / CR JJ (W Broadway Dr.) (44.32965, -88.60005) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 60.9600 | Other (At-Grade) Multilane (2 Lane, 2x1 max) | 2024 | Yield-controlled right-turn bypass lane on southwest leg. Intersection was moved about 400 feet to the southeast. Year Completed estimated (2023-2024). | 
| Ixonia,
                WI Jefferson Co. United States | STH 16 / American St. (CTH F) (43.14647, -88.59080) | Roundabout Existing | All-Way Yield Unknown | 4 Approaches 0 Driveways 47.0551 | Other (At-Grade) Single-Lane | 2014 | ICD estimated from Google Maps linework. | 
| Oshkosh,
                WI Winnebago Co. United States | STH 21 (Omro Rd.) / Brooks Ln. / N Washburn St. (44.03244, -88.58758) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 48.9435 | Other (At-Grade) Multilane (3+ Lane) | 2012 | Opened June 8, 2012. Three-lane roundabout. Series of 4 roundabouts. Functional Class: Arterial ICD estimated from Google Maps linework. | 
| Oshkosh,
                WI Winnebago Co. United States | W 9th Ave. / S Washburn St. (44.01085, -88.58483) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 50.2920 | Other (At-Grade) Multilane (2 Lane, 2x2 max) | 2011 | |
| Oshkosh,
                WI Winnebago Co. United States | CR T / CR Y (44.08259, -88.58346) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 29.1697 | Other (At-Grade) Single-Lane | 2013 | Year Completed estimated (2011-2015). ICD estimated from Google Maps linework. | 
| Oshkosh,
                WI Winnebago Co. United States | CTH E (Witzel Ave.) / Washburn St. (44.01808, -88.58321) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 50.2920 | Other (At-Grade) Multilane (2 Lane, 2x2 max) | 2010 | Opened September 24, 2010. | 
| Oshkosh,
                WI Winnebago Co. United States | STH 21 (Omro Rd.) / US 41 SB Ramps (44.03272, -88.58319) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 60.1058 | Freeway Ramps (Grade-Separated) Multilane (3+ Lane) | 2012 | Opened August 30, 2012. Three-lane roundabout. Series of 4 roundabouts. ICD estimated from Google Maps linework. | 
| Oshkosh,
                WI Winnebago Co. United States | W 9th Ave. / US 41 SB Ramps (44.01089, -88.58318) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 50.2920 | Freeway Ramps (Grade-Separated) Multilane (2 Lane, 2x2 max) | 2011 | |
| Oshkosh,
                WI Winnebago Co. United States | STH 21 (Omro Rd.) / US 41 NB Ramps (44.03271, -88.58178) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 140.8193 | Freeway Ramps (Grade-Separated) Multilane (3+ Lane) | 2012 | Opened October 29, 2012. Three-lane roundabout. Series of 4 roundabouts. ICD estimated from Google Maps linework. | 
| Oshkosh,
                WI Winnebago Co. United States | W 9th Ave. / US 41 NB Ramps (44.01078, -88.58145) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 50.2920 | Freeway Ramps (Grade-Separated) Multilane (2 Lane, 2x2 max) | 2011 | |
| Oshkosh,
                WI Winnebago Co. United States | CTH E (Witzel Ave.) / Koeller St. (44.01805, -88.58098) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 48.7680 | Other (At-Grade) Multilane (2 Lane, 2x2 max) | 2010 | Opened September 24, 2010. | 
| Oshkosh,
                WI Winnebago Co. United States | W 9th Ave. / S Koeller St. (44.01079, -88.57978) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 50.2920 | Other (At-Grade) Multilane (2 Lane, 2x2 max) | 2011 | |
| Oshkosh,
                WI Winnebago Co. United States | STH 21 (Omro Rd.) / N Koeller St. / Oshkosh Ave. (44.03258, -88.57882) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 45.7200 | Other (At-Grade) Multilane (2 Lane, 2x1 max) | 2012 | Roundabout relocated to west of previous intersection. Series of 4 roundabouts. Opened June 18, 2012. | 
| Oshkosh,
                WI Winnebago Co. United States | US 45 / US 41 SB Ramps (44.06074, -88.57443) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 54.8640 | Freeway Ramps (Grade-Separated) Multilane (2 Lane, 2x2 max) | 2011 | |
| Oshkosh,
                WI Winnebago Co. United States | US 45 / Fernau Ave. / Lake Butte des Morts Dr. (44.05513, -88.57150) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 50.2920 | Other (At-Grade) Multilane (2 Lane, 2x2 max) | 2010 | Opened August 24, 2010. | 
| Neenah,
                WI Winnebago Co. United States | STH 76 / CR JJ (Breezewood Ln.) (44.15610, -88.54400) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 0.0000 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2020 | |
| Neenah,
                WI Winnebago Co. United States | STH 76 / CR G (44.14099, -88.54394) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-Lane | 2020 | |
| Neenah,
                WI Winnebago Co. United States | STH 76 / CR GG (44.11205, -88.54355) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-Lane | 2020 | |
| Greenville,
                WI Outagamie Co. United States | Parkview Dr. / Reimer Dr. (44.30527, -88.54295) | Traffic Calming Circle Existing | One-Way/Two-Way Stop Unknown | 3 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-Lane | ||
| Oshkosh,
                WI Winnebago Co. United States | Jackson St. / Murdock Ave. (44.03947, -88.54265) | Roundabout Existing | All-Way Yield Rectangular Rapid Flashing Beacon (RRFB) | 4 Approaches 0 Driveways 41.1480 | Other (At-Grade) Multilane (2 Lane, 2x2 max) | 2010 | |
| Greenville,
                WI Outagamie Co. United States | Parkview Dr. / Orchid Way (44.30454, -88.54160) | Traffic Calming Circle Existing | One-Way/Two-Way Stop Unknown | 3 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-Lane | ||
| Greenville,
                WI Outagamie Co. United States | STH 76 (Municipal Dr.) / School Rd. (44.28745, -88.53703) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-Lane | 2024 | https://projects.511wi.gov/76schoolrab/full-project-overview/ | 
| (unincorporated),
                WI Outagamie Co. United States | STH 76 / CTH O (44.35172, -88.53697) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 40.1389 | Other (At-Grade) Single-Lane | 2010 | Opened September 24, 2010. High-speed approach roadways. ICD estimated from Google Maps linework. | 
| Oshkosh,
                WI Winnebago Co. United States | Winnegago County Community Park Dr. / Winnegago County Community Park Entrance (44.08167, -88.53360) | Other Existing | All-Way Yield Unknown | 3 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-Lane | No splitter islands on west or southeast legs. | |
| Pascagoula,
                MS Jackson Co. United States | Hospital Rd. / Old Mobile Hwy. (30.36849, -88.53333) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 88.6193 | Other (At-Grade) Single-Lane | 2017 | http://cityofpascagoula.com/482/Hospital-Road-Improvements ICD estimated from Google Maps linework. | 
| Oshkosh,
                WI Winnebago Co. United States | Country Park Dr. / Community Park Dr. (44.07467, -88.53138) | Other Existing | Unknown Unknown | 3 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-Lane | No splitter islands. | |
| Coral,
                IL McHenry Co. United States | US 20 / Harmony Rd. (42.16114, -88.52668) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 48.7680 | Other (At-Grade) Single-Lane | 2020 | |
| Appleton,
                WI Outagamie Co. United States | Challenger Dr. / (unknown) / (airport terminal loop) (44.26217, -88.50818) | Roundabout Existing | All-Way Yield Unknown | 3 Approaches 0 Driveways 42.6717 | Other (At-Grade) Single-Lane | 2019 | Entrance to Appleton International Airport. | 
| Greenville,
                WI Outagamie Co. United States | CTH CB / W Atlantis Dr. (44.26708, -88.50676) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 59.4360 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2019 | Access to airport. | 
| Greenville,
                WI Outagamie Co. United States | CR CB / Greenville Dr. / Wally Way (44.28549, -88.50618) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 32.4894 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2012 | Year Completed estimated (2011-2012). ICD estimated from Google Maps linework. | 
| Greenville,
                WI Outagamie Co. United States | STH 15 / CTH CB (Greenville Dr.) (44.28721, -88.50600) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 52.1525 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2013 | Opened August 2013. ICD estimated from Google Maps linework. | 
| Neenah,
                WI Winnebago Co. United States | CR JJ (Winneconne Ave.) / Pendleton Rd. / CR CB (44.17142, -88.50521) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 51.8160 | Other (At-Grade) Single-Lane | 2022 | Yield-controlled right-turn bypass lane on east leg. https://www.postcrescent.com/story/news/local/2022/05/20/neenah-roundabout-construction-start-june-september-winnebago-county-cb-jj/9794939002/ | 
| Neenah,
                WI Winnebago Co. United States | Oakridge Rd. / CR CB (44.18512, -88.50515) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 46.2479 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2019 | https://fox11online.com/news/local/new-roundabout-legacy-of-victim-killed-in-town-of-neenah-crash ICD estimated from Google Maps linework. | 
| Yorkville,
                IL Kendall Co. United States | Fox Rd. / Eldamain Rd. / (unknown) (41.62718, -88.49774) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 45.7200 | Other (At-Grade) Single-Lane | 2023 | https://www.youtube.com/watch?v=69pkvRANbUs | 
| Grand Chute,
                WI Outagamie Co. United States | W College Ave. / Mayflower Dr. (44.26220, -88.49662) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 54.8640 | Other (At-Grade) Multilane (2 Lane, 2x1 max) | 2020 | Year Completed estimated (2019-2020). | 
| Menasha,
                WI Winnebago Co. United States | CTH CB / Mutual Way (44.23560, -88.49555) | Roundabout Existing | All-Way Yield None | 3 Approaches 1 Driveways 56.3880 | Other (At-Grade) Multilane (2 Lane, 2x1 max) | 2018 | Yield-controlled right-turn bypass lane on west leg. | 
| 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. |