Roundabouts Database Index

30320 Results

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City, State County Country	Intersection (Lat, Lng)	Type Status	Control Type / Other Control Type	Approaches / Driveways / ICD (m)	Functional Class / LaneType	Year Completed	Comments
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.
Westport, WI Dane Co. United States	STH 19 / STH 113 / County Hwy I (43.19175, -89.41190)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 47.8910	Other (At-Grade) Multilane (2 Lane, unspecified)	2018	https://www.nbc15.com/content/news/MORGANs-STORY-498754641.html ICD estimated from Google Maps linework.