Roundabouts Database Index

29361 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
St Georges Basin, NSW Shoalhaven Australia	The Wool Rd. / Island Point Rd. / Gumden Ln. (-35.08486, 150.59899)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways	Other (At-Grade) Single-Lane
St Helens, England United Kingdom	Catalina Approach / Loverose Way (53.40771, -2.67327)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways	Other (At-Grade) Single-Lane	2023
St Helens, England United Kingdom	Catalina Approach / (parking) (53.40771, -2.67329)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways	Other (At-Grade) Single-Lane	2024
St Helens, England Merseyside United Kingdom	Peasley Cross: A58 (Parr St. - Linkway E) / Parr St. / Peasley Cross Ln. (53.45175, -2.72752)	Roundabout Existing	All-Way Yield None	5 Approaches 0 Driveways	Other (At-Grade) Multilane (3+ Lane)
St Helens, England Merseyside United Kingdom	The Landings: A571 (King St. - College St.) / Duke St. / North Rd. / Baldwin St. (53.45518, -2.73908)	Roundabout Existing	All-Way Yield None	5 Approaches 0 Driveways	Other (At-Grade) Multilane (2 Lane, unspecified)
St Helens, England Merseyside United Kingdom	College St. / Corporation St. (53.45532, -2.73826)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways	Other (At-Grade) Multilane (2+ lanes) w/ Traversable Central Island
St Helens, England Merseyside United Kingdom	Mossborough Island: A570 (Rainford Bypass) / B5203 (Mossborough Rd.) (53.49421, -2.78948)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways	Other (At-Grade) Multilane (2 Lane, unspecified)
St Helens Park, NSW Campbelltown Australia	Kellerman Dr. / St Helens Park Dr. (-34.10359, 150.80687)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways	Other (At-Grade) Single-Lane
St Helens Park, NSW Campbelltown Australia	B69 (Appin Rd.) / Copperfield Dr. / Kellerman Dr. (-34.11424, 150.79774)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways	Other (At-Grade) Single-Lane
St James, MN Watonwan Co. United States	1st Ave. S / Armstrong Blvd. N (43.98198, -94.62838)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 13.7502	Other (At-Grade) Single-lane w/ Traversable Central Island	2017	ICD estimated from Google Maps linework.
St James, MN Watonwan Co. United States	1st Ave. S / 7th St. S (43.98246, -94.62703)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 11.1720	Other (At-Grade) Single-lane w/ Traversable Central Island	2017	ICD estimated from Google Maps linework.
St John, IN Lake Co. United States	W 107th Ave. / Olcott Ave. (41.42519, -87.48115)	Other Existing	All-Way Yield None	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane		Pedestrian access to central island.
St John, IN Lake Co. United States	Sagebrook / Scarlett Oak / Bridlewood St. / W 107th Ln. (41.42453, -87.44468)	Other Existing	All-Way Yield None	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane		Pedestrian access to central island; no splitter islands.
St John, IN Lake Co. United States	Park Pl. / W 103rd St. / W 105th Ave. (41.42981, -87.44027)	Other Existing	All-Way Yield None	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane		Pedestrian access to central island.
St John, IN Lake Co. United States	Joliet St. / W 101st Ave. / Parrish St. (41.44113, -87.45029)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane	2019	Year Completed estimated (2017-2020).
St John, IN Lake Co. United States	W 105th Pl. / Bridlewood St. (41.42788, -87.44468)	Other Existing	All-Way Yield None	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane		No splitter islands.
St John’s, NL Newfoundland and Labrador Canada	Blackmarsh Rd. / Redmond's Rd. / Empire Ave. (47.54064, -52.76583)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 54.0189	Other (At-Grade) Single-Lane	2018	Right-turn bypass lane on west leg. ICD estimated from Google Maps linework.
St John’s, NL Newfoundland and Labrador Canada	Carrick Dr. / Paul Reynolds Community Center entrance (47.60297, -52.70838)	Roundabout Existing	All-Way Yield Unknown	3 Approaches 1 Driveways 48.3176	Other (At-Grade) Single-Lane	2016	ICD estimated from Google Maps linework.
St John’s, NL Newfoundland and Labrador Canada	Southlands Blvd. / Reservoir Rd. / Danny Dr. (47.50592, -52.82828)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 65.3496	Other (At-Grade) Multilane (2 Lane, unspecified)	2016	ICD estimated from Google Maps linework.
St John’s, NL Newfoundland and Labrador Canada	Danny Dr. / Gallway Blvd. (47.50411, -52.82701)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 53.2497	Other (At-Grade) Single-Lane	2017	ICD estimated from Google Maps linework.
St John’s, NL Newfoundland and Labrador Canada	Hebron Way / Sea Rose Ave. (47.61578, -52.72824)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 39.4497	Other (At-Grade) Single-Lane	2013	ICD estimated from Google Maps linework.
St John’s, NL Newfoundland and Labrador Canada	World Pkwy. / Navigator Ave. (47.61248, -52.75041)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 39.4522	Other (At-Grade) Multilane (2 Lane, unspecified)	2016	ICD estimated from Google Maps linework.
St John’s, NL Newfoundland and Labrador Canada	Robin Hood Bay Rd. (east) (47.60559, -52.67235)	Roundabout Existing	All-Way Yield Unknown	3 Approaches 0 Driveways 38.6521	Other (At-Grade) Single-Lane	2008	ICD estimated from Google Maps linework.
St John’s, NL Newfoundland and Labrador Canada	Robin Hood Bay Rd. (west) (47.60597, -52.67609)	Roundabout Existing	All-Way Yield Unknown	3 Approaches 0 Driveways 32.2099	Other (At-Grade) Single-Lane	2008	ICD estimated from Google Maps linework.
St John’s, NL Newfoundland and Labrador Canada	Danny Dr. / Hwy 1 EB Ramps (47.49446, -52.86186)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 53.2595	Freeway Ramps (Grade-Separated) Single-Lane	2014	one leg blocked off ICD estimated from Google Maps linework.
St Johns, FL St. Johns Co. United States	Celesta Pkwy. / Amalurra Trl. / Marinda Pl. / Idalia Run (30.11024, -81.54914)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 37.1940	Other (At-Grade) Single-Lane	2015	Year Completed estimated (2014-2015). ICD estimated from Google Maps linework.
St Johns, FL St. Johns Co. United States	Amalurra Trl. / Azura Pt. / Tierra Cove / Sitara Ln. (30.11689, -81.54571)	Other Existing	All-Way Yield None	4 Approaches 0 Driveways 88.8465	Other (At-Grade) Single-Lane	2015	Parking and pedestrian access to central island. Year Completed estimated (2014-2015). ICD estimated from Google Maps linework.
St Johns, FL St. Johns Co. United States	Durbin Creek Blvd. / Davis Pond Blvd. (30.11100, -81.61024)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 37.1935	Other (At-Grade) Single-Lane	2017	Originally opened as multilane roundabout (1999-2002) with concentric circulatory roadway striping. Converted to single-lane roundabout 2016-2017. ICD estimated from Google Maps linework. 21442
St Johns, FL St. Johns Co. United States	Maplewood Dr. / Buckeye Ln. (30.11013, -81.60070)	Other Existing	Other Unknown	4 Approaches 0 Driveways 34.0946	Other (At-Grade) Single-Lane		Mix of stop and yield control. ICD estimated from Google Maps linework.
St Johns, FL St. Johns Co. United States	Heron Landing Rd. / Sanctuary Dr. (30.08552, -81.53676)	Other Existing	Other Unknown	4 Approaches 0 Driveways 38.2368	Other (At-Grade) Single-Lane		Mix of stop and yield control. No splitter islands. Pedestrian crossings at edge of circulatory roadway. ICD estimated from Google Maps linework.
St Johns, FL St. Johns Co. United States	Russell Sampson Rd. / Eva Earl Rd. (30.06755, -81.50660)	Roundabout Existing	All-Way Yield None	3 Approaches 1 Driveways 31.0084	Other (At-Grade) Single-Lane	2009	Year Completed estimated (2008-2010). ICD estimated from Google Maps linework.
St Johns, FL St. Johns Co. United States	Beachwalk Blvd. / Caribbean Pl. (30.08488, -81.48445)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 42.3708	Other (At-Grade) Single-Lane	2017	ICD estimated from Google Maps linework.
St Johns, FL St. Johns Co. United States	Beachwalk Blvd. / Caribbean Pl. / Marquesa Cir. (30.08650, -81.47858)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 41.3366	Other (At-Grade) Single-Lane	2017	ICD estimated from Google Maps linework.
St Johns, FL St. Johns Co. United States	SR 13 / Rafter Tail Ln. (30.01773, -81.63293)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 38.2630	Other (At-Grade) Single-Lane	2018	Year Completed estimated (2017-2018). ICD estimated from Google Maps linework.
St Johns, FL St. Johns Co. United States	Rivertown Main St. / Orange Branch Trl. (30.03383, -81.62536)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 31.0190	Other (At-Grade) Single-Lane	2016	Year Completed estimated (2016-2017). ICD estimated from Google Maps linework.
St Johns, FL St. Johns Co. United States	Belmont Dr. (30.03095, -81.59239)	Other Existing	Uncontrolled Unknown	2 Approaches 4 Driveways 57.9038	Other (At-Grade) Single-Lane		ICD estimated from Google Maps linework.
St John's, NL Newfoundland and Labrador Canada	Ruth Ave. / Rte 2 WB Ramps (47.50841, -52.82303)	Roundabout Existing	All-Way Yield Unknown	3 Approaches 0 Driveways 47.5981	Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified)	2018	ICD estimated from Google Maps linework.
St John's, NL Newfoundland and Labrador Canada	Gallway Blvd. / (unknown) (47.50180, -52.83153)	Roundabout Existing	All-Way Yield Unknown	3 Approaches 0 Driveways 27.4329	Other (At-Grade) Single-Lane	2017	ICD estimated from Google Maps linework.
St Joost, Limburg Echt-Susteren Netherlands	N276 / A2-E25 Ramps (51.13476, 5.89665)	Rotary Existing	All-Way Yield Unknown	4 Approaches 0 Driveways	Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified)
St Joseph, WI St. Croix Co. United States	CTH E / STH 64 NB Ramps (45.06005, -92.77939)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 46.3998	Freeway Ramps (Grade-Separated) Single-Lane	2017	ICD estimated from Google Maps linework.
St Joseph, WI St. Croix Co. United States	STH 35 / CR E / STH 64 SB Ramps (45.05953, -92.78237)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 46.4002	Freeway Ramps (Grade-Separated) Single-Lane	2017	ICD estimated from Google Maps linework.
St Joseph, WI St. Croix Co. United States	STH 35 / Main St. (45.05597, -92.79070)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 46.4031	Other (At-Grade) Single-Lane	2015	ICD estimated from Google Maps linework.
St Joseph, MO Buchanan Co. United States	Robidoux St. / 8th St. (39.76984, -94.85063)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 24.3840	Other (At-Grade) Single-Lane	2015	Year Completed estimated (2014-2015). https://www.newspressnow.com/opinion/editorials/progress-in-a-roundabout-way/article_3dba548e-dbbf-11ec-9a02-6faad919c23d.html
St Leo, FL Pasco Co. United States	Campus St. / West Way (28.33653, -82.25721)	Other Existing	All-Way Yield Unknown	3 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane		Pedestrian crossing within circulatory roadway.
St Louis, MO St. Louis Co. United States	Willow Village Pkwy. / Beckham Ridge Ct. / Willowbrooke Manors Ct. / Kennabrooke Ct. (38.68853, -90.41193)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 39.6240	Other (At-Grade) Single-Lane	2014	One-stage unmarked pedestrian crossings.
St Louis, MO St. Louis City Co. United States	McKinley Dr. / Wells Dr. (38.63354, -90.28072)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 49.4467	Other (At-Grade) Single-Lane	2008	Converted from traffic circle in 2007-2008. Previous circle had on-street parking in circulatory roadway. ICD estimated from Google Maps linework.
St Louis, MO St. Louis Co. United States	N Forty Dr. / I-64-US 40 WB Ramps (38.63631, -90.41822)	Roundabout Existing	All-Way Yield Unknown	3 Approaches 0 Driveways 50.3777	Freeway Ramps (Grade-Separated) Single-Lane	2009	Frontage road connection replaced direct connection to S Spoede Rd. ICD estimated from Google Maps linework.
St Louis, MO St. Louis Co. United States	S Forty Rd. / I-64-US 40 EB Ramps (38.63496, -90.41724)	Roundabout Existing	All-Way Yield Unknown	3 Approaches 0 Driveways 48.5127	Freeway Ramps (Grade-Separated) Single-Lane	2009	Frontage road connection replaced direct connection to S Spoede Rd. ICD estimated from Google Maps linework.
St Louis Park, MN Hennepin Co. United States	Cedar Lake Rd. / Zarthan Ave. (44.96544, -93.35534)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane	2020
St Louis Park, MN Hennepin Co. United States	36th St. W / Belt Line Blvd. / Monterey Dr. (44.93795, -93.34154)	Roundabout Existing	All-Way Yield Rectangular Rapid Flashing Beacon (RRFB)	3 Approaches 0 Driveways 42.6720	Other (At-Grade) Multilane (2 Lane, 2x1 max)	2021	Right-turn-only lane on north leg. Left-turn-only lane on west leg.
St Lucia, QLD Brisbane Australia	Sir Fred Schonell Dr. / Campbell Rd. / Sir William MacGregor Dr. / Mill Rd. (-27.49459, 153.01169)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways	Other (At-Grade) Single-Lane		At The University of Queensland.
St Lucia, QLD Brisbane Australia	Carmody Rd. / Hawken Dr. / Upland Rd. / Chancellors Pl. (-27.49886, 153.01083)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways	Other (At-Grade) Single-Lane
St Marys, NSW Penrith Australia	Desborough Rd. / Marsden Rd. (-33.78048, 150.78411)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways	Other (At-Grade) Single-lane w/ Traversable Central Island
St Michael, MN Wright Co. United States	Frankfort Pkwy. NE / Maciver Ave. NE (45.21727, -93.64424)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 25.9080	Other (At-Grade) Single-lane w/ Traversable Central Island	2023
St Michael, MN Wright Co. United States	50th St. NE / Naber Ave. NE (45.22444, -93.62400)	Roundabout Existing	All-Way Yield None	3 Approaches 1 Driveways 28.9560	Other (At-Grade) Single-lane w/ Traversable Central Island	2019	Year Completed estimated (2018-2019).
St Michael, MN Wright Co. United States	45th St. NE / Jansen Ave. (45.21727, -93.68854)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 28.9560	Other (At-Grade) Single-lane w/ Traversable Central Island	2022
St Michael, MN Wright Co. United States	STH 241 (42nd St. NE) / O'Day Ave. NE (45.21665, -93.59822)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 53.3400	Other (At-Grade) Multilane (2 Lane, unspecified)	2021
St Paul, MN Ramsey Co. United States	Frost Ave. / Parkway Dr. / E Shore Dr. (44.99925, -93.05696)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 35.4702	Other (At-Grade) Single-Lane	2011	ICD estimated from Google Maps linework.
St Paul, MN Dakota Co. United States	Mendota Heights Rd. / Visitation Dr. (44.86554, -93.13174)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 31.3204	Other (At-Grade) Single-Lane	2010	ICD estimated from Google Maps linework.
St Paul, MN Washington Co. United States	Hilton Trl. / TH 36 EB Ramps / Viking Dr. (45.03529, -92.95032)	Roundabout Existing	All-Way Yield Unknown	3 Approaches 0 Driveways 28.6959	Freeway Ramps (Grade-Separated) Single-Lane	2013	ICD estimated from Google Maps linework.
St Paul, MN Washington Co. United States	Hilton Trl. / TH 36 WB On-Ramp / 60th St. N (45.03645, -92.95099)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 53.1708	Freeway Ramps (Grade-Separated) Single-Lane	2013	ICD estimated from Google Maps linework.
St Paul, MN Dakota Co. United States	Northwood Pkwy. / Central Pkwy. / Denmark Ave. / (unknown) (44.83731, -93.15923)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 30.4888	Other (At-Grade) Single-Lane	2008	ICD estimated from Google Maps linework.
St Paul, MN Ramsey Co. United States	Coral Sea St. NE / Ring Rd. (45.12147, -93.19897)	Roundabout Existing	All-Way Yield None	4 Approaches 1 Driveways 33.7090	Other (At-Grade) Multilane (2 Lane, unspecified)	2007	ICD estimated from Google Maps linework.
St Peter, MN Nicollet Co. United States	CSAH 5 (W Broadway Ave.-Fort Rd.) / 357th Ave. (44.32626, -93.98485)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane	2017	Entrance to St Peter High School. Year Completed estimated (2016-2020).
St Peter, MN Nicollet Co. United States	W Broadway Ave. / Sunrise Dr. (44.33175, -93.96950)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 42.6720	Other (At-Grade) Single-Lane	2022	Elliptical shaped. ICD = 140 ft x 130 ft. https://www.keyc.com/2022/08/15/roundabout-construction-begins-st-peter/
St Peters, MO St. Charles Co. United States	Executive Centre Pkwy. / Jungermann Cir. (38.79655, -90.58169)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 48.7680	Other (At-Grade) Multilane (2 Lane, 2x2 max)	2015	Two circulating lanes throughout even though side street has only one entering lane. Year Completed estimated (2014-2015).
St Peters, MO St. Charles Co. United States	Jungermann Cir. / Wellness Dr. (38.79591, -90.57980)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 42.6720	Other (At-Grade) Single-Lane	2015	Year Completed estimated (2014-2015).
St Simons Island, GA Glynn Co. United States	Kings Way / Frederica Rd. / Retreat Ave. (31.14561, -81.40034)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Unknown	2021	Year Completed estimated (2019-2021).
St Simons Island, GA Glynn Co. United States	Brockinton Dr. / Hanging Moss Dr. (31.16501, -81.39671)	Traffic Calming Circle Existing	Unknown None	3 Approaches 0 Driveways 40.8785	Other (At-Grade) Single-Lane		ICD estimated from Google Maps linework.
St Simons Island, GA Glynn Co. United States	Demere Rd. / E Beach Causeway (31.14836, -81.38116)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane	2020	https://www.arcgis.com/apps/MapJournal/index.html?appid=1665571e5832424bbef0fe01a60a00c0&section=7
St Simons Island, GA Glynn Co. United States	Ocean Blvd. / Ocean Rd. / E Beach Causeway / 1st St. (31.14671, -81.37451)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane	2019	https://www.arcgis.com/apps/MapJournal/index.html?appid=1665571e5832424bbef0fe01a60a00c0&section=8
St Thomas, ON Elgin Canada	Burwell Rd. / Ponsford Pl. (42.80168, -81.16236)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways	Other (At-Grade) Single-Lane	2020	https://www.stthomas.ca/news/archived_news/burwell_road__ponsford_place_roundabout
St Thomas, ON Elgin Canada	Southdale Line / Lake Margaret Trl. (42.74945, -81.17914)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 43.8515	Other (At-Grade) Single-Lane	2017	ICD estimated from Google Maps linework.
St Thomas, ON Elgin Canada	Wellington St. / Manor Rd. (42.77450, -81.15594)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 40.0000	Other (At-Grade) Single-Lane	2016
St Thomas, ON Elgin Canada	Sunset Dr. / Talbot Hill / Wellington Rd. (42.78327, -81.21434)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 47.3338	Other (At-Grade) Multilane (2 Lane, unspecified)	2017	Sculpture of a train in central island. ICD estimated from Google Maps linework.
St Thomas, ON Elgin Canada	Southgate Pkwy. / Fairview Ave. (42.75327, -81.16695)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways	Other (At-Grade) Single-Lane	2021	https://london.ctvnews.ca/the-most-famous-st-thomas-ont-native-you-ve-likely-never-heard-of-1.5629790
St Thomas, ON Elgin Canada	Southgate Pkwy. / Penhale Ave. (42.75348, -81.16312)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 28.0000	Other (At-Grade) Single-Lane	2004	Year Completed estimated (2001-2006).
St Thomas, ON Elgin Canada	Southgagte Pkwy. / Carolina Crescent / Peach Tree Blvd. (42.75327, -81.15804)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 28.0000	Other (At-Grade) Single-Lane	2012	Year Completed estimated (2009-2013).
St Thomas, ON Elgin Canada	Southdale Line / Fairview Rd. (42.74922, -81.16651)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways	Other (At-Grade) Single-Lane	2021	https://www.facebook.com/cityofstthomas/photos/a.3739568726131579/3992567457498370
St. Asaph, Wales Denbighshire United Kingdom	Ffordd William Morgan / A55 (North Wales Expressway) WB Ramps (53.26168, -3.47766)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways	Freeway Ramps (Grade-Separated) Single-Lane		Raindrop shaped.
St. Asaph, Wales Denbighshire United Kingdom	Ffordd William Morgan / A55 (North Wales Expressway) EB Ramps (53.26270, -3.47690)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways	Freeway Ramps (Grade-Separated) Single-Lane		Raindrop shaped.
St. Clair Township, OH Butler Co. United States	Hamilton Trenton Rd. / Riverside Dr. / Busenbark Rd. / (parking lot) (39.46565, -84.48671)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 38.7252	Other (At-Grade) Single-Lane	2011	ICD estimated from Google Maps linework.
St. Clair Township, OH Butler Co. United States	Jacksonburg Rd. / Morganthaler Rd. (39.46012, -84.52261)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 35.0399	Other (At-Grade) Single-Lane	2010	ICD estimated from Google Maps linework.
St. Clair Township, OH Butler Co. United States	Eaton Rd. / Beissinger Rd. (39.44294, -84.58301)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 39.6602	Other (At-Grade) Single-Lane	2015	ICD estimated from Google Maps linework.
St. Croix Falls, WI Polk Co. United States	US 8 / 208th St. (45.39731, -92.58540)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 40.2548	Other (At-Grade) Multilane (2 Lane, unspecified)	2011	Opened March 8, 2011. ICD estimated from Google Maps linework.
St. George, UT Washington Co. United States	Main St. / 200 N St. / Diagonal St. (37.11152, -113.58350)	Roundabout Existing	All-Way Yield Unknown	5 Approaches 0 Driveways 30.4778	Other (At-Grade) Single-Lane	1999	ICD estimated from Google Maps linework.
St. George, UT Washington Co. United States	750 N St. / 2860 E St. (37.12077, -113.52450)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 29.5218	Other (At-Grade) Single-Lane	2001	Next to school campus. ICD estimated from Google Maps linework.
St. George, UT Washington Co. United States	Main St. / Hope St. (400 N) (37.11495, -113.58340)	Roundabout Existing	Unknown Unknown	4 Approaches 0 Driveways 28.5717	Other (At-Grade) Single-Lane	2007	ICD estimated from Google Maps linework.
St. George, UT Washington Co. United States	E. Brigham Rd. / I-15 SB Ramps / Pioneer Rd. (37.05999, -113.58560)	Roundabout Existing	All-Way Yield None	6 Approaches 0 Driveways 78.1526	Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified)	2006	Combines interchange ramps and frontage road. ICD estimated from Google Maps linework.
St. George, UT Washington Co. United States	Tabernacle Rd. / Main St. (37.10812, -113.58350)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 23.8119	Other (At-Grade) Single-Lane	2001	ICD estimated from Google Maps linework.
St. George, UT Washington Co. United States	E. Brigham Rd. / I-15 NB Ramps (37.05939, -113.58350)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 42.8889	Freeway Ramps (Grade-Separated) Single-Lane	2006	Raindrop-shaped interchange terminal. ICD estimated from Google Maps linework.
St. George, UT Washington Co. United States	Washington Pkwy. / (unknown) (37.14462, -113.48590)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 60.9290	Other (At-Grade) Multilane (2 Lane, unspecified)	2005	Date estimated. ICD estimated from Google Maps linework.
St. George, UT Washington Co. United States	N Ridgecrest / W 1130 N / (parking) (37.12710, -113.60330)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 28.5671	Other (At-Grade) Single-Lane	2005	ICD estimated from Google Maps linework.
St. George, UT Washington Co. United States	N Ridgecrest / Valley View Dr. / (parking) (37.12601, -113.60230)	Roundabout Existing	Unknown None	4 Approaches 0 Driveways 22.8540	Other (At-Grade) Single-Lane	2003	ICD estimated from Google Maps linework.
St. George, UT Washington Co. United States	(unknown) / (unknown) (37.15329, -113.63020)	Roundabout Existing	Unknown Unknown	4 Approaches 0 Driveways 32.3648	Other (At-Grade) Single-Lane	2006	ICD estimated from Google Maps linework.
St. George, UT Washington Co. United States	Snow Canyon Pkwy. / (unknown) (37.16312, -113.64370)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 55.2034	Other (At-Grade) Multilane (2 Lane, unspecified)	2004	ICD estimated from Google Maps linework.
St. George, Saint George Bermuda	Kindley Field Rd. / Mullet Bay Rd. / St David's Rd. / Southside Rd. (32.36990, -64.69213)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways	Other (At-Grade) Multilane (2 Lane, unspecified)
St. Louis, MO St. Louis Co. United States	Halls Ferry / MO 367 (38.72251, -90.24017)	Rotary Existing	All-Way Yield None	6 Approaches 0 Driveways 86.6571	Other (At-Grade) Multilane (2 Lane, unspecified)		three of the six approaches are multilane and have dual lanes of traffic merging into both lanes of the roundabout; roundabout is unstriped. Description as follows: Halls Ferry Circle is 3 lanes wide, 350 foot diameter, 35 miles per hour and has 5 major roadways entering (from http://www.ballwin.mo.us/minutes_062402.html) ICD estimated from Google Maps linework.
St. Louis, MO St. Louis City Co. United States	Tower Grove Ave. / I-64 EB Off-Ramp (38.63045, -90.25538)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 33.5879	Freeway Ramps (Grade-Separated) Single-Lane	2014	ICD estimated from Google Maps linework.
St. Louis, MO St. Louis City Co. United States	Gratiot St. / S 13th St. (38.62104, -90.20242)	Other Existing	Unknown Unknown	4 Approaches 0 Driveways 33.5923	Other (At-Grade) Single-Lane		No splitter islands. ICD estimated from Google Maps linework.