Roundabouts Database Index

30321 Results

Search by location, intersection, and comments with the Quick Search below. You can search all other attributes by clicking Advanced Search. Sort results by clicking the headers of any column. Click the Intersection name for a details and aerial view. Search results pages can be bookmarked. Results can be exported to KML for viewing in Google Earth.

City, State County Country	Intersection (Lat, Lng)	Type Status	Control Type / Other Control Type	Approaches / Driveways / ICD (m)	Functional Class / LaneType	Year Completed	Comments
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).
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.
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.
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	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.
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	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.
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 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.
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	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.
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/
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.
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 / 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.
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.
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/
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.
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.
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.
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
Carterville, IL Williamson Co. United States	Cambria Rd. / Herrin Rd. (37.81089, -89.12377)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 42.6717	Other (At-Grade) Single-Lane	2020	https://wsiltv.com/2020/05/29/williamson-county-intersection-to-close-for-construction/
Laurel, MS Jones Co. United States	Central Ave. / Maple St. (31.69108, -89.12855)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 26.4224	Other (At-Grade) Single-Lane	2002	ICD estimated from Google Maps linework.
Peru, IL La Salle Co. United States	Peoria St. / Plank Rd. / Sunset Dr. (41.34157, -89.13074)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane	2020	https://www.mywebtimes.com/2020/10/07/la-salle-countys-first-roundabout-will-be-partially-opened-thursday/aix39n8/
Laurel, MS Jones Co. United States	Central Ave. / N 5th Ave. (31.69251, -89.13109)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane	2021	Converted from traffic circle with all-way stop control by adding small raised splitter islands and converting to yield on entry. Year Completed estimated (2019-2022).
Laurel, MS Jones Co. United States	Sawmill Rd. / Sixth Ave. / Central Ave. (31.69357, -89.13285)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Multilane (2 Lane, 2x2 max)	2022	Central Ave is one-way exiting roundabout. http://laurelmainstreet.com/tag/roundabout/
Rockford, IL Winnebago Co. United States	Meridian Rd. / Auburn St. (42.29301, -89.17367)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 37.9888	Other (At-Grade) Single-Lane	2011	Yield-controlled right-turn bypass lanes on north and south legs. ICD estimated from Google Maps linework.
San Salvador, San Salvador San Salvador El Salvador	24A Avenida Norte / Calle Concepcion / Calle El Tamarindo (13.70459, -89.17968)	Unknown Existing	Unknown Unknown	5 Approaches 0 Driveways	Other (At-Grade) Multilane (3+ Lane)
Sun Prairie, WI Dane Co. United States	Gaslight Dr. / Carriage Dr. (43.18638, -89.18950)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 29.2608	Other (At-Grade) Single-Lane	2003	Exact year of opening unknown. Year Completed estimated (2000-2005).
Cottage Grove, WI Dane Co. United States	CTH N / CTH TT (43.11198, -89.19907)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 32.2597	Other (At-Grade) Multilane (2 Lane, unspecified)	2011	Series of 3 roundabouts. ICD estimated from Google Maps linework.
Cottage Grove, WI Dane Co. United States	CTH N / I-94 EB Ramps (43.10877, -89.19923)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 38.3649	Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified)	2011	Series of 3 roundabouts. ICD estimated from Google Maps linework.
Cottage Grove, WI Dane Co. United States	CTH N / I-94 WB Ramps (43.11037, -89.19930)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 36.6200	Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified)	2011	Series of 3 roundabouts. ICD estimated from Google Maps linework.
Stoughton, WI Dane Co. United States	CTH N / (parking) (42.99687, -89.20044)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 59.4360	Other (At-Grade) Multilane (2 Lane, unspecified)	2018	Year Completed estimated (2017-2018).
Stoughton, WI Dane Co. United States	CTH N / I-90 WB Ramps (43.00259, -89.20044)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 60.9600	Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified)	2018	Year Completed estimated (2017-2018).
Stoughton, WI Dane Co. United States	CTH N / I-90 EB Ramps (43.00063, -89.20077)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 60.9600	Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified)	2018	Year Completed estimated (2017-2018).
Mejicanos, San Salvador Mejicanos El Salvador	Salida a Boulevard Constitución / (parking) (13.73661, -89.21767)	Unknown Existing	Unknown Unknown	3 Approaches 0 Driveways	Other (At-Grade) Multilane (3+ Lane)
Thunder Bay, ON Thunder Bay Canada	Marina Park Dr. (Sleeping Giant Pkwy.) / Pearl St. (48.43155, -89.21965)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 40.0000	Other (At-Grade) Single-Lane	2014	Year Completed estimated (2013-2015).
San Salvador, San Salvador San Salvador El Salvador	Calle San Antonio Abad / Boulevard Constitucion Ramps (13.71803, -89.22251)	Unknown Existing	Unknown Unknown	4 Approaches 0 Driveways	Other (At-Grade) Multilane (3+ Lane)
San Salvador, San Salvador San Salvador El Salvador	Prolongacion Avenida Alberto Masterrer / Calle El Roble (13.72299, -89.23485)	Unknown Existing	Unknown Unknown	4 Approaches 0 Driveways	Other (At-Grade) Multilane (3+ Lane)
Carbondale, IL Jackson Co. United States	W Chautauqua St. / S McLafferty Rd. (37.71568, -89.23758)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane	2021	North leg disconnected. https://explorecarbondale.com/676/Chautauqua-McLafferty-Roundabout-Complet
San Salvador, San Salvador San Salvador El Salvador	Prolongacion Avenida Alberto Masterrer / Calle Las Granadillas (13.71996, -89.24024)	Unknown Existing	Unknown Unknown	3 Approaches 0 Driveways	Other (At-Grade) Multilane (3+ Lane)
McFarland, WI Dane Co. United States	CR AB / US 12-US 18 WB Ramps (43.04036, -89.24278)	Roundabout Existing	All-Way Yield Unknown	3 Approaches 0 Driveways 0.0000	Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified)	2023	Interchange replaced single stop-controlled intersection.
McFarland, WI Dane Co. United States	CR AB / US 12-US 18 EB Ramps (43.03910, -89.24354)	Roundabout Existing	All-Way Yield Unknown	3 Approaches 0 Driveways 0.0000	Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified)	2023	Interchange replaced single stop-controlled intersection.
McFarland, WI Dane Co. United States	CR AB / Millpond Rd. (43.03749, -89.24561)	Roundabout Existing	All-Way Yield Unknown	3 Approaches 0 Driveways 0.0000	Other (At-Grade) Unknown	2023
Stoughton, WI Dane Co. United States	US 51-STH 138 / Hoel Ave. / Silverado Dr. (42.91814, -89.24587)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 54.8640	Other (At-Grade) Multilane (2 Lane, 2x1 max)	2022	https://isthmus.com/events/u-s-highway-51-construction/
San Salvador, San Salvador San Salvador El Salvador	Avenida Masterrer Norte / Calle del Mirador (13.71191, -89.24783)	Other Existing	Unknown Unknown	4 Approaches 0 Driveways	Other (At-Grade) Multilane (3+ Lane)
San Salvador, San Salvador San Salvador El Salvador	Paseo General Escalón / Avenida Jerusalen Ramps (13.70362, -89.24941)	Other Existing	Unknown Unknown	4 Approaches 0 Driveways	Freeway Ramps (Grade-Separated) Multilane (3+ Lane)
Stoughton, WI Dane Co. United States	US 51-STH 138 / US 51 / STH 138 (42.91876, -89.24947)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 54.8640	Other (At-Grade) Multilane (2 Lane, 2x2 max)	2022	https://isthmus.com/events/u-s-highway-51-construction/
Sun Prairie, WI Dane Co. United States	O'Keeffe Ave. / (future road) (43.16863, -89.25001)	Roundabout Existing	All-Way Yield None	2 Approaches 0 Driveways 35.7141	Other (At-Grade) Multilane (2 Lane, unspecified)	2006	ICD estimated from Google Maps linework.
Stoughton, WI Dane Co. United States	US 51 / Deer Point Rd. / Roby Rd. (42.92732, -89.25042)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 54.8640	Other (At-Grade) Multilane (2 Lane, 2x1 max)	2021	https://isthmus.com/events/u-s-highway-51-construction/
Rutland, WI Dane Co. United States	STH 138 / Kettle Park Way (42.91821, -89.25204)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 45.4812	Other (At-Grade) Multilane (2 Lane, unspecified)	2016	ICD estimated from Google Maps linework.
Sun Prairie, WI Dane Co. United States	Leopold Way / Brown Bear Way (43.16196, -89.25238)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 29.8704	Other (At-Grade) Single-Lane	2019
Sun Prairie, WI Dane Co. United States	O'Keeffe Ave. / (future road - S Thompson Rd) (43.16849, -89.25340)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 44.4250	Other (At-Grade) Multilane (2 Lane, unspecified)	2006	ICD estimated from Google Maps linework.
San Salvador, San Salvador San Salvador El Salvador	Calle El Mirador / Tercera Calle Poniente / Calle Jose Marti / Calle del Mirador / Pasaje Limon (13.70859, -89.25429)	Unknown Existing	Unknown Unknown	5 Approaches 0 Driveways	Other (At-Grade) Unknown
Sun Prairie, WI Dane Co. United States	W Main St. / N Thompson Rd. (43.17636, -89.25448)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 47.0321	Other (At-Grade) Multilane (2 Lane, unspecified)	2005	Opened November 2005. ICD estimated from Google Maps linework.
Sun Prairie, WI Dane Co. United States	W Main St. / N Mallard Dr. (43.17674, -89.25973)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 41.8061	Other (At-Grade) Multilane (2 Lane, unspecified)	2005	Opened November 2005. ICD estimated from Google Maps linework.
Madison, WI Dane Co. United States	Millpond Rd. / (parking) (43.04361, -89.26202)	Roundabout Existing	All-Way Yield Unknown	3 Approaches 0 Driveways 0.0000	Other (At-Grade) Unknown	2023
Antiguo Cuscatlán, La Libertad Antiguo Cuscatlán El Salvador	Boulevard Merliot / Calle Chiltiupán / Calle El Pedregal (13.67823, -89.26335)	Unknown Existing	Unknown Unknown	4 Approaches 0 Driveways	Other (At-Grade) Multilane (3+ Lane)
Antiguo Cuscatlán, La Libertad Antiguo Cuscatlán El Salvador	Bulevar Merliot / Bulevar Monseñor Romero Ramps (13.68477, -89.26364)	Unknown Existing	Unknown Unknown	3 Approaches 0 Driveways	Freeway Ramps (Grade-Separated) Multilane (3+ Lane)
Sun Prairie, WI Dane Co. United States	W Main St. / CTH C (N Grand Ave.) (43.17611, -89.26487)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 47.0323	Other (At-Grade) Multilane (2 Lane, unspecified)	2005	Opened November 2005. 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.
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	Saturn Dr. / North Star Dr. (43.09428, -89.27589)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 30.4800	Other (At-Grade) Single-Lane	2015	Year Completed estimated (2014-2017).
Madison, WI Dane Co. United States	Ragan St. / North Star Dr. (43.09786, -89.27608)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 32.0040	Other (At-Grade) Single-Lane	2019	Year Completed estimated (2018-2020).
Madison, WI Dane Co. United States	Felland Rd. / Tranquility Trl. (43.12504, -89.27625)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 39.6240	Other (At-Grade) Single-Lane	2021	https://www.youtube.com/watch?v=nTuFFRcmDPY
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.
Thunder Bay, ON Thunder Bay Canada	Edward St. / Redwood Ave. (48.39410, -89.27780)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways	Other (At-Grade) Multilane (2 Lane, unspecified)	2021	https://www.thunderbay.ca/en/city-services/roundabout.aspx
Madison, WI Dane Co. United States	Saturn Dr. / Milky Way (43.09423, -89.27887)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 32.0040	Other (At-Grade) Single-Lane	2016	Elliptical shaped. ICD = 105 ft x 95 ft. Year Completed estimated (2014-2017).
Hattiesburg, MS Forrest Co. United States	Old Hwy 49 (Bay St. / James St.) / Hall Ave. / Arledge St. (31.31737, -89.28621)	Roundabout Existing	All-Way Yield Unknown	5 Approaches 0 Driveways 42.6720	Other (At-Grade) Single-Lane	2024	https://www.wdam.com/2024/11/28/hall-ave-east-overpass-roundabout-open/
Hattiesburg, MS Forrest Co. United States	Hardy St. / 2nd Ave. / Green St. / Adeline St. (31.32467, -89.29718)	Roundabout Existing	All-Way Yield None	5 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane	2022	https://www.wdam.com/video/2022/10/20/hattiesburg-residents-circle-learning-curve-with-new-roundabout/
Slayden, MS Benton Co. United States	US 72 / SR 7 (34.94637, -89.29731)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Multilane (2 Lane, 2x1 max)	2023	https://www.bidnetdirect.com/mississippi/solicitations/open-bids/statewide/Construction-of-a-Roundabout-on-US-72-at-SR-7/22676924418
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.
Madison, WI Dane Co. United States	Thompson Dr. / STH 30 EB Off-Ramp (43.10506, -89.30066)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 34.0073	Other (At-Grade) Multilane (2 Lane, unspecified)	2004	Opened October 22, 2004. ICD estimated from Google Maps linework.
Madison, WI Dane Co. United States	Thompson Dr. / STH 30 WB On-Ramp / Commercial Ave. (43.10643, -89.30084)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 40.9822	Other (At-Grade) Multilane (2 Lane, unspecified)	2004	Opened October 22, 2004. ICD estimated from Google Maps linework.
Madison, WI Dane Co. United States	Hanson Rd. / Eastpark Blvd. / Portage Rd. (43.15377, -89.30464)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 35.7228	Other (At-Grade) Multilane (2 Lane, unspecified)	2008	Opened October 14, 2008. ICD estimated from Google Maps linework.
Deforest, WI Dane Co. United States	Savannah Dr. / Williamsburg Way (43.19280, -89.31834)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 40.0536	Other (At-Grade) Multilane (2 Lane, unspecified)	2011	ICD estimated from Google Maps linework.
Windsor, WI Dane Co. United States	Windsor Rd. / US 51 NB Ramps (43.21629, -89.32191)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 44.3902	Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified)	2013	Year Completed estimated (2013-2014). Under construction in 2013 per Streetview. ICD estimated from Google Maps linework.
DeForest, WI Dane Co. United States	CR V / US 51 NB Ramps (43.25270, -89.32322)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 60.0214	Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified)	2014	date: https://www.oesllc.com/portfolio-items/ush-51-expansion-and-interchange-madison-deforest-dane-county-wi/ ICD estimated from Google Maps linework.
Windsor, WI Dane Co. United States	Windsor Rd. / US 51 SB Ramps (43.21641, -89.32400)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 38.2973	Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified)	2013	Year Completed estimated (2013-2014). ICD estimated from Google Maps linework.
Windsor, WI Dane Co. United States	CR V / US 51 SB Ramps (43.25275, -89.32500)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 46.9732	Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified)	2014	date: https://www.oesllc.com/portfolio-items/ush-51-expansion-and-interchange-madison-deforest-dane-county-wi/ ICD estimated from Google Maps linework.
North Leeds, WI Columbia Co. United States	US 51 / STH 22 / STH 60 (43.33205, -89.32536)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Multilane (2 Lane, 2x1 max)	2022	https://www.channel3000.com/roundabout-at-us-51-state-highways-22-and-60-in-columbia-county-to-open-thursday/pic/4787689/
DeForest, WI Dane Co. United States	CR V (E North St.) / North Towne Rd. / Ball Ct. (43.25277, -89.32677)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 47.8431	Other (At-Grade) Multilane (2 Lane, unspecified)	2014	date: https://www.oesllc.com/portfolio-items/ush-51-expansion-and-interchange-madison-deforest-dane-county-wi/ ICD estimated from Google Maps linework.
Windsor, WI Dane Co. United States	Windsor Rd. / N Towne Rd. (43.21636, -89.32789)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 40.9085	Other (At-Grade) Multilane (2 Lane, unspecified)	2013	Year Completed estimated (2013-2014). ICD estimated from Google Maps linework.
(unincorporated), WI Dane Co. United States	US 14 / STH 92 / Biglow Rd. (42.85434, -89.34080)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 54.8640	Other (At-Grade) Multilane (2 Lane, 2x1 max)	2022	https://www.channel3000.com/u-s-highway-14-to-close-between-oregon-brooklyn-starting-next-week/
Madison, WI Dane Co. United States	Winnebago St. / N 6th St. / Division St. (43.09783, -89.35031)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 23.5463	Other (At-Grade) Single-Lane	2008	Opened June 2008. ICD estimated from Google Maps linework.
Monona, WI Dane Co. United States	S Towne Dr. / Industrial Dr. (43.04082, -89.35458)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 34.9158	Other (At-Grade) Multilane (2 Lane, unspecified)	2007	Near Super-Walmart. Opened August 7, 2007. ICD estimated from Google Maps linework.
Waunakee, WI Dane Co. United States	STH 19 / River Rd. (43.19512, -89.36551)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 60.9600	Other (At-Grade) Multilane (2 Lane, 2x1 max)	2020	Yield-controlled right-turn bypass lanes on north and south legs.
Oregon, WI Dane Co. United States	STH 138 / US 14 WB Ramps (42.91764, -89.36607)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 47.2309	Freeway Ramps (Grade-Separated) Single-Lane	2011	ICD estimated from Google Maps linework.
Oregon, WI Dane Co. United States	STH 138 / US 14 EB Ramps (42.91774, -89.36817)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 41.1083	Freeway Ramps (Grade-Separated) Single-Lane	2011	ICD estimated from Google Maps linework.
Oregon, WI Dane Co. United States	CTH MM / US 14 WB Ramps (42.95272, -89.37769)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 41.9591	Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified)	2012	Series of 3 roundabouts. ICD estimated from Google Maps linework.
Oregon, WI Dane Co. United States	CTH MM / US 14 EB Ramps (42.95128, -89.37859)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 29.7217	Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified)	2012	Series of 3 roundabouts. ICD estimated from Google Maps linework.
Oregon, WI Dane Co. United States	CTH MM / CTH M (42.94950, -89.37981)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 41.9613	Other (At-Grade) Multilane (2 Lane, unspecified)	2012	Series of 3 roundabouts. ICD estimated from Google Maps linework.
Fitchburg, WI Dane Co. United States	Lacy Rd. / Cheryl Pkwy. (43.00643, -89.39114)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 41.9225	Other (At-Grade) Multilane (2 Lane, unspecified)	2012	ICD estimated from Google Maps linework.
Fitchburg, WI Dane Co. United States	Lacy Rd. / Haight Farm Rd. (43.00164, -89.39327)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 43.6727	Other (At-Grade) Multilane (2 Lane, unspecified)	2012	ICD estimated from Google Maps linework.
Pinckneyville, IL Perry Co. United States	Kennedy Dr. / IL 154 (38.08128, -89.39884)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 48.8852	Other (At-Grade) Single-Lane	2016	https://thesouthern.com/news/local/communities/pinckneyville/work-progressing-on-roundabout-in-pinckneyville/article_15117fb7-c620-5c5a-9396-51297680745e.html ICD estimated from Google Maps linework.
Washington, IL Tazewell Co. United States	Washington Square (40.70341, -89.40659)	Other Existing	One-Way/Two-Way Stop None	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane	1920	Pedestrian access to central island; parking along circulatory roadway.
Fitchburg, WI Dane Co. United States	Greenway Cross / Bryant Rd. (43.03128, -89.41081)	Roundabout Existing	All-Way Yield None	3 Approaches 1 Driveways 24.3840	Other (At-Grade) Single-lane w/ Traversable Central Island	2021
Waunakee, WI Dane Co. United States	STH 113 / Arboretum Dr. / Bong Rd. (43.17746, -89.41174)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 45.7200	Other (At-Grade) Single-Lane	2023
Fitchburg, WI Dane Co. United States	Lacy Rd. / Fahey Glen (43.00174, -89.41176)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 31.4443	Other (At-Grade) Single-Lane	2017	ICD estimated from Google Maps linework.
Fitchburg, WI Dane Co. United States	Nobel Dr. / Fahey Glen (42.99461, -89.41188)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 38.1000	Other (At-Grade) Single-Lane	2018	Southwest and southeast legs stubbed.