Roundabouts Database

29410 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
Spokane, WA
Spokane Co.
United States 		W Woodside Ave. / N F St.
(47.72087, -117.45875) 		Traffic Calming Circle
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
 Other (At-Grade)
Single-Lane 		2017
Spokane, WA
Spokane Co.
United States 		W Woodside Dr. / W Dell Dr.
(47.72059, -117.45289) 		Traffic Calming Circle
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
78.7411 		Other (At-Grade)
Single-Lane 		2017 ICD estimated from Google Maps linework.
Spokane, WA
Spokane Co.
United States 		W Woodside Ave. / N Alberta St.
(47.71971, -117.44693) 		Traffic Calming Circle
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
28.1223 		Other (At-Grade)
Single-Lane 		2017 ICD estimated from Google Maps linework.
Spokane, WA
Spokane Co.
United States 		S Cook St. / E 42nd Ave.
(47.61546, -117.37397) 		Traffic Calming Circle
Existing 		Uncontrolled
None 		4 Approaches
0 Driveways
 Other (At-Grade)
Single-Lane 		2004
Spokane, WA
Spokane Co.
United States 		S Stonington Ln. / E 42nd Ave.
(47.61546, -117.37287) 		Traffic Calming Circle
Existing 		Uncontrolled
None 		3 Approaches
0 Driveways
 Other (At-Grade)
Single-Lane 		2004
Spokane, WA
Spokane Co.
United States 		US 2 / S Deer Heights Rd.
(47.64308, -117.55018) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
18.5075 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		2019 Developer mitigation project - October 2019. ICD estimated from Google Maps linework.
(unincorporated), WA
Spokane Co.
United States 		W Aero Rd. / W Westbow Blvd.
(47.58899, -117.56024) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
48.7680 		Other (At-Grade)
Single-Lane 		2019 Yield controlled right-turn bypass lane on northwest leg with acute view angle.
Spokane, WA
Spokane Co.
United States 		S Glenrose Rd. / S Carnahan Rd.
(47.63586, -117.33495) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
39.6240 		Other (At-Grade)
Single-Lane 		2019 Spokane County project. Open July 2019. Replaced southbound Carnahan yield control.
Deer Park, WA
Spokane Co.
United States 		US 395 / W Monroe Rd. / W Crawford St.
(47.95398, -117.48830) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
40.7936 		Other (At-Grade)
Single-Lane 		2018 Opened August 21, 2018. ICD estimated from Google Maps linework.
Spokane, WA
Spokane Co.
United States 		US 2 / (development entrance)
(47.76691, -117.38533) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
49.7715 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		2018 Open July 19, 2018. This intersection was originally accepted in 2012 as stop control (evolving to a signal with growth) for the first phase of a development. Because there was a long lapse prior to construction, it became subject to the WSDOT Intersection Control Evaluation process adopted July 2013. Subsequently, this is the first roundabout in WSDOT Eastern Region recommended by a consultant employing that process. ICD estimated from Google Maps linework.
Deer Park, WA
Spokane Co.
United States 		US 395 / N Short Rd. / N Main St.
(47.94267, -117.47734) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
35.2022 		Other (At-Grade)
Single-Lane 		2018 Opened 7/18/2018. ICD estimated from Google Maps linework.
Spokane, WA
Spokane Co.
United States 		W Pacific Ave. / S Cannon St.
(47.65555, -117.44160) 		Traffic Calming Circle
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane 		2006 No splitter islands on north and south legs. Pedestrian crossings within circulatory roadway. April 2006.
Spokane Valley, WA
Spokane Co.
United States 		E Montgomery Dr. / E Mansfield Ave.
(47.67753, -117.24790) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
39.6240 		Other (At-Grade)
Single-Lane 		2009 April 2009.
Spokane Valley, WA
Spokane Co.
United States 		Flora Rd. / E Mission Ave. / E Indiana Pkwy. - E Mission Pkwy.
(47.67154, -117.17516) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
38.1000 		Other (At-Grade)
Single-Lane 		2010 E Indiana Pkwy is west leg entrance; E Mission Pkwy is west leg exit. November 2010.
Spokane, WA
Spokane Co.
United States 		E. Sharp Ave. / N. Columbus St.
(47.66950, -117.39490) 		Roundabout
Existing 		Unknown
Unknown 		4 Approaches
0 Driveways
22.5195 		Other (At-Grade)
Single-Lane 		1992 September 1992. ICD estimated from Google Maps linework.
Deer Park, WA
Spokane Co.
United States 		S Main St. / W H St. / E H St.
(47.94695, -117.47693) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
30.4800 		Other (At-Grade)
Single-Lane 		2010 October 2010. Broke ground July 26, 2010.
Deer Park, WA
Spokane Co.
United States 		E Crawford Ave. / Weber Rd.
(47.95444, -117.45384) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
41.1480 		Other (At-Grade)
Single-Lane 		2009 September 2009.
Spokane, WA
Spokane Co.
United States 		SR 206 (Mt. Spokane Park Dr.) / Bruce Rd.
(47.78761, -117.30400) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
35.3076 		Other (At-Grade)
Single-Lane 		2005 http://www.wsdot.wa.gov/Projects/SR206/BruceRoadRoundabout/. Opened December 2005. Previously controlled by 2-way stop control ICD estimated from Google Maps linework.
Spokane, WA
Spokane Co.
United States 		Wellesley Ave. / A St.
(47.70076, -117.45400) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
29.7401 		Other (At-Grade)
Single-Lane 		2005 Opened October 2005. ICD estimated from Google Maps linework.
Spokane, WA
Spokane Co.
United States 		Crestline Rd. / Lincoln St.
(47.72944, -117.37920) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
30.5271 		Other (At-Grade)
Single-Lane 		2006 Opened September 2006. ICD estimated from Google Maps linework.
Liberty Lake, WA
Spokane Co.
United States 		Liberty Lake Rd. / Harvard Rd. / E Mission Ave. / I-90 WB Off-Ramp
(47.67454, -117.11097) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
41.0137 		Freeway Ramps (Grade-Separated)
Single-Lane 		2013 Open October 2013. ICD estimated from Google Maps linework.
Spokane, WA
Spokane Co.
United States 		E Wellesley Ave. / N Freya St.
(47.70060, -117.35714) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
46.6198 		Other (At-Grade)
Single-Lane 		2016 Open October 2016. ICD estimated from Google Maps linework.
Spokane, WA
Spokane Co.
United States 		N Waikiki Rd. / N Mill Rd.
(47.76113, -117.42815) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
30.5085 		Other (At-Grade)
Single-Lane 		2012 Open October 2012. ICD estimated from Google Maps linework.
Airway Heights, WA
Spokane Co.
United States 		Sprague Ave. / Quest Dr.
(47.65441, -117.56614) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
51.4880 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		2012 Open July 2012. Concentric circulatory roadway striping. ICD estimated from Google Maps linework.
Airway Heights, WA
Spokane Co.
United States 		US 2 / Spokane Tribe Casino Entrance
(47.64293, -117.61009) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
49.0853 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		2017 Open 11/13/2017. Casino open on January 8, 2018. First multilane on a WSDOT facility in Eastern Region. ICD estimated from Google Maps linework.
Spokane, WA
Spokane Co.
United States 		Freya St. / US 395 SB Ramps
(47.72328, -117.35776) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
36.1548 		Freeway Ramps (Grade-Separated)
Single-Lane 		2012 Open August 2012. ICD estimated from Google Maps linework.
Spokane Valley, WA
Spokane Co.
United States 		E Broadway Ave. / N Flora Rd.
(47.66424, -117.17510) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
24.1305 		Other (At-Grade)
Single-Lane 		2010 Year Completed estimated (2009-2011). ICD estimated from Google Maps linework.
Liberty Lake, WA
Spokane Co.
United States 		E Mission Ave. / N Molter Rd.
(47.67131, -117.08964) 		Roundabout
Existing 		All-Way Yield
Unknown 		4 Approaches
0 Driveways
31.3654 		Other (At-Grade)
Single-Lane 		2017 ICD estimated from Google Maps linework.
Spokane, WA
Spokane Co.
United States 		Freya St. / US 395 NB Ramps
(47.72033, -117.35784) 		Roundabout
Existing 		All-Way Yield
Unknown 		3 Approaches
0 Driveways
35.3533 		Freeway Ramps (Grade-Separated)
Single-Lane 		2009 Completed July 2009. ICD estimated from Google Maps linework.
(unincorporated), WA
Spokane Co.
United States 		SR 902 (W Medical Lake Rd.) / Craig Rd.
(47.59464, -117.60751) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
25.7735 		Other (At-Grade)
Single-Lane 		2018 Compact roundabout (95' ICD). Open to traffic July 23, 2018. ICD estimated from Google Maps linework.
Spokane, WA
Spokane Co.
United States 		SR 290 (Trent Ave) / Martin Luther King Jr Way / Perry St.
(47.66163, -117.39014) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
19.3053 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		2018 New intersection of MLK Jr. Way and SR 290. Open to traffic August 5, 2018. Two circulating lanes for SR 290 WB entry leg ICD estimated from Google Maps linework.
Greenacres, WA
Spokane Co.
United States 		N Barker Rd. / I-90 WB Ramps / E Cataldo Ave.
(47.66736, -117.15377) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
37.4904 		Freeway Ramps (Grade-Separated)
Single-Lane 		2020 ICD ranges from approx 112 to approx 123 feet. Open 8/25/2020.
Greenacres, WA
Spokane Co.
United States 		N Barker Rd. / I-90 EB Ramps
(47.66457, -117.15376) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
41.1480 		Freeway Ramps (Grade-Separated)
Single-Lane 		2020 Open September 4, 2020.
(unincorporated), WA
Spokane Co.
United States 		Aero Rd. / Medical Lake Rd. / I-90 EB Ramps / Spokane Transit Center
(47.59081, -117.56327) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
48.7680 		Freeway Ramps (Grade-Separated)
Multilane (2 Lane, unspecified) 		2020 Fifth leg is entry/exit for Spokane Transit Center buses only. Opened week of 10/19/2020.
Emerson-Garfield, WA
Spokane Co.
United States 		W Montgomery Ave. / N Cedar St.
(47.67858, -117.43245) 		Traffic Calming Circle
Existing 		Uncontrolled
Unknown 		4 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane
Emerson-Garfield, WA
Spokane Co.
United States 		W Montgomery Ave. / N Madison Ave.
(47.67856, -117.42821) 		Traffic Calming Circle
Existing 		Uncontrolled
Unknown 		4 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane
Five Mile Prairie, WA
Spokane Co.
United States 		N Five Mile Rd. / W Strong Rd.
(47.73709, -117.45373) 		Roundabout
Existing 		All-Way Yield
Unknown 		4 Approaches
0 Driveways
38.1000 		Other (At-Grade)
Single-Lane 		2019 Year Completed estimated (2019-2020).
(unincorporated), WA
Spokane Co.
United States 		S Grove Rd. / I-90 EB Ramps
(47.61877, -117.50139) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
33.5277 		Freeway Ramps (Grade-Separated)
Single-Lane 		2021 Open July 2, 2021.
Spokane, WA
Spokane Co.
United States 		S Grove Rd. / I-90 WB Ramps
(47.62137, -117.50472) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
43.8912 		Freeway Ramps (Grade-Separated)
Multilane (2 Lane, unspecified) 		2021 Opened June 2021.
Spokane, WA
Spokane Co.
United States 		E 43rd Ave. / S Ivory St.
(47.61493, -117.39182) 		Traffic Calming Circle
Existing 		All-Way Yield
Unknown 		3 Approaches
1 Driveways
17.0685 		Other (At-Grade)
Single-Lane 		2020 No splitter islands.
Fredericksburg, VA
Spotsylvania Co.
United States 		Towne Centre Blvd. / Spotsylvania Mall Dr.
(38.29385, -77.51490) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
31.8702 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		2010 Segments of circulatory roadway between entries and exits. Year Completed estimated (2009-2010). ICD estimated from Google Maps linework.
Fredericksburg, VA
Spotsylvania Co.
United States 		Towne Centre Blvd. / Waverly Dr.
(38.28802, -77.51152) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
45.7200 		Other (At-Grade)
Multilane (2 Lane, 2x1 max) 		2009 Year Completed estimated (2008-2009).
Spotsylvania, VA
Spotsylvania Co.
United States 		Fawn Lake Pkwy. / Vanderbilt Cove
(38.26358, -77.72986) 		Other
Existing 		Uncontrolled
Unknown 		3 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane
Squamish, BC
Squamish-Lillooet
Canada 		The Boulevard / Perth Dr.
(49.74036, -123.11024) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
1 Driveways
20.0678 		Other (At-Grade)
Single-Lane 		2010 Year Completed estimated (2009-2010). ICD estimated from Google Maps linework.
Squamish, BC
Squamish-Lillooet
Canada 		The Boulevard / Highlands Way
(49.74035, -123.11661) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
1 Driveways
22.3833 		Other (At-Grade)
Single-Lane 		2010 Year Completed estimated (2009-2010). ICD estimated from Google Maps linework.
Whistler, BC
Squamish-Lillooet
Canada 		Nicklaus North Blvd. / Mons Rd.
(50.14255, -122.94859) 		Other
Existing 		Unknown
Unknown 		3 Approaches
0 Driveways
 Other (At-Grade)
Single-Lane 		No splitter islands.
Squamish, BC
Squamish-Lillooet District
Canada 		Commercial Way / Discovery Way
(49.72279, -123.15057) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
50.0000 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		2006 Home Depot retail center on one corner. Uses fishhook signs and pavement markings. Year Completed estimated (2004-2009).
Volzhskiy, Volgograd
Sredneakhtubinsky District
Russia 		ploshchad' Stroiteley [prospekt Lenina / ulitsa Karla Marksa / ulitsa Chaykovskogo]
(48.80869, 44.73350) 		Other
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
 Other (At-Grade)
Multilane (3+ Lane) 		Pedestrian access to central island.
Bugojno, Federation of Bosnia and Herzegovina
Srednjobosanski
Bosnia and Herzegovina 		Armije Bosne i Hercegovine / 307. motorizovane brigade / Bosanska ulica / Jove Raduljčića
(44.05097, 17.43798) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
 Other (At-Grade)
Single-Lane
Sremska Mitrovica, Vojvodina
Srem District
Serbia 		Ulica Fruškogorska / Ulica Planinska / Ulica Dr Milana Kostića
(44.98373, 19.60998) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
 Other (At-Grade)
Single-Lane
Ruma, Vojvodina
Srem District
Serbia 		SR 120 (Ulica Kraljevačka) / SR 21 (Ulica Istočna radna zona)
(45.00221, 19.84319) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
 Other (At-Grade)
Single-Lane
Cruz Bay, VI
St John
United States 		Hwy 10 / Hwy 102 / Hwy 104 / Hwy 210 / Centerline Rd.
(18.33057, -64.79292) 		Roundabout
Existing 		All-Way Yield
Unknown 		5 Approaches
0 Driveways
30.4800 		Other (At-Grade)
Single-Lane 		2010 Year Completed estimated (2009-2013).
Flint Hill, MO
St. Charles Co.
United States 		CR P / US 61 NB Ramps / Service Rd.
(38.85292, -90.86827) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
44.6445 		Freeway Ramps (Grade-Separated)
Single-Lane 		2018 Under construction (almost finished) Aug 2018 (streetview) ICD estimated from Google Maps linework.
Wentzville, MO
St. Charles Co.
United States 		Schroeder Creek Blvd. / William Dierberg Dr.
(38.82018, -90.86907) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
39.0819 		Other (At-Grade)
Single-Lane 		2016 Paving was done in late 2016, but fully completed in 2017 -- https://www.wentzvillemo.org/departments/public_works/schroeder_creek_boulevard_extension_project.php . ICD estimated from Google Maps linework.
Wentzville, MO
St. Charles Co.
United States 		Schroeder Creek Blvd. / (high school access)
(38.81649, -90.86931) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
40.9451 		Other (At-Grade)
Single-Lane 		2016 Paving was done in late 2016, but fully completed in 2017 -- https://www.wentzvillemo.org/departments/public_works/schroeder_creek_boulevard_extension_project.php . ICD estimated from Google Maps linework.
Wentzville, MO
St. Charles Co.
United States 		Wilmer Valley Dr. / Wilmer Ridge Dr.
(38.79278, -90.86444) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
50.2675 		Other (At-Grade)
Single-Lane 		2008 ICD estimated from Google Maps linework.
O'Fallon, MO
St. Charles Co.
United States 		Phoenix Pkwy. / Redhawk Pkwy. / Red Hawk Pl.
(38.74510, -90.73630) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
33.5341 		Other (At-Grade)
Single-Lane 		2001 Year Completed estimated (1996-2002). ICD estimated from Google Maps linework.
O'Fallon, MO
St. Charles Co.
United States 		Phoenix Pkwy. / Phoenix Dr. / Boardwalk Place Dr.
(38.74122, -90.73747) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
33.5359 		Other (At-Grade)
Single-Lane 		2001 Year Completed estimated (1996-2002). ICD estimated from Google Maps linework.
Gilmore, MO
St. Charles Co.
United States 		S Church St. / I-70 WB Ramps
(38.80639, -90.85441) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
50.2920 		Freeway Ramps (Grade-Separated)
Multilane (2 Lane, unspecified) 		2016 Year Completed estimated (2015-2016).
Cottleville, MO
St. Charles Co.
United States 		Gutermuth Rd. / MO 364 EB Ramps
(38.73394, -90.66626) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
0.0000 		Freeway Ramps (Grade-Separated)
Single-Lane 		2020 https://www.stltoday.com/suburban-journals/stcharles/portion-of-gutermuth-to-close-for-route-364-interchange-construction/article_392e1870-c917-5df1-82ab-d83cceca50b8.html
Cottleville, MO
St. Charles Co.
United States 		Gutermuth Rd. / MO 364 WB Ramps
(38.73583, -90.66567) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
0.0000 		Freeway Ramps (Grade-Separated)
Single-Lane 		2020 https://www.stltoday.com/suburban-journals/stcharles/portion-of-gutermuth-to-close-for-route-364-interchange-construction/article_392e1870-c917-5df1-82ab-d83cceca50b8.html
Cottleville, MO
St. Charles Co.
United States 		Gutermuth Rd. / (unknown)
(38.73697, -90.66532) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane 		2020
Gilmore, MO
St. Charles Co.
United States 		Luetkenhaus Blvd. / Main Plaza Dr. / Wall St. / (parking)
(38.82013, -90.85000) 		Roundabout
Existing 		All-Way Yield
None 		5 Approaches
0 Driveways
39.6240 		Other (At-Grade)
Single-Lane 		2012 Year Completed estimated (2011-2012).
O'Fallon, MO
St. Charles Co.
United States 		Springhurst Pkwy. / Spring Borough Dr.
(38.76123, -90.77537) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
1 Driveways
39.6240 		Other (At-Grade)
Single-Lane 		2006 Year Completed estimated (2005-2007).
O'Fallon, MO
St. Charles Co.
United States 		Preston Woods Pkwy. / Preston Woods Trl. / Flowering Ash Ln.
(38.74881, -90.79714) 		Roundabout
Existing 		All-Way Yield
Unknown 		4 Approaches
0 Driveways
36.5760 		Other (At-Grade)
Single-Lane 		2009 Year Completed estimated (2008-2009).
Gilmore, MO
St. Charles Co.
United States 		Village Glen Dr. / Glengarry Dr.
(38.79407, -90.84755) 		Other
Existing 		Unknown
Unknown 		4 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane 		No splitter islands.
Gilmore, MO
St. Charles Co.
United States 		Glengarry Ct. / Kellerton Pl.
(38.79542, -90.84653) 		Other
Existing 		Unknown
Unknown 		3 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane 		No splitter islands.
St Charles, MO
St. Charles Co.
United States 		Tecumseh St. / N 3rd St.
(38.79739, -90.47611) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
32.0037 		Other (At-Grade)
Single-Lane 		2010 Merging right-turn bypass lane on east leg.
St Charles, MO
St. Charles Co.
United States 		Veterans Memorial Pkwy. / Fairgrounds Rd.
(38.76989, -90.50100) 		Roundabout
Unknown 		All-Way Yield
None 		4 Approaches
0 Driveways
42.6717 		Other (At-Grade)
Multilane (2 Lane, 2x2 max) 		2017 Merging right-turn bypass lane on north leg.
St Charles, MO
St. Charles Co.
United States 		Boones Lick Rd. / N Outer Rd. / St Charles Ave.
(38.77702, -90.50897) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
36.5760 		Other (At-Grade)
Single-Lane 		2007
St Charles, MO
St. Charles Co.
United States 		Charlestowne Village Dr. / Keelboat Cross Station
(38.82680, -90.49034) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
38.1000 		Other (At-Grade)
Single-Lane 		2006
Gilmore, MO
St. Charles Co.
United States 		Pine Creek Dr. / Pine Creek Ct.
(38.83970, -90.86642) 		Other
Existing 		Uncontrolled
Unknown 		4 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Unknown
Lake St Louis, MO
St. Charles Co.
United States 		Lake Saint Louis Blvd. / Veteran's Memorial Pkwy. / I-70 EB Ramps
(38.80322, -90.77073) 		Roundabout
Existing 		All-Way Yield
None 		5 Approaches
0 Driveways
67.0560 		Freeway Ramps (Grade-Separated)
Multilane (2 Lane, 2x1 max) 		2022
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).
O'Fallon, MO
St. Charles Co.
United States 		Hwy DD / Dalriada Blvd.
(38.74631, -90.75882) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
50.2920 		Other (At-Grade)
Single-Lane 		2022 Right-turn-only lanes on southwest and northeast legs. Appears to be convertible to 2x1. https://www.sccmo.org/DocumentCenter/View/18378/OF_HIGHWAY-DD
Weldon Spring, MO
St. Charles Co.
United States 		Technology Dr. / Meadows Pkwy. / Wolfrum Rd. / I-64 WB Exit Ramp
(38.70526, -90.67410) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
60.9600 		Freeway Ramps (Grade-Separated)
Single-Lane 		Oval shaped. ICD = 200 ft x 180 ft. Built initially as 2x2 roundabout in 2005-2006. Concentric circulatory roadway striping. Converted to single lane using by striping out inner circulatory roadway lane and left entry lane on southwest leg 2020-2021.
Wentzville, MO
St. Charles Co.
United States 		Prospect Rd. / I-64 EB Exit Ramp
(38.79596, -90.82043) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
42.6717 		Freeway Ramps (Grade-Separated)
Single-Lane 		2008 Interchange replaced single at-grade intersection. Year Completed estimated (2008-2009).
Wentzville, MO
St. Charles Co.
United States 		Prospect Rd. / Corporate Pkwy. / I-64 WB Exit Ramp
(38.79597, -90.81810) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
42.6720 		Freeway Ramps (Grade-Separated)
Single-Lane 		2008 Interchange replaced single at-grade intersection. Year Completed estimated (2008-2009).
O'Fallon, MO
St. Charles Co.
United States 		Connecting Rd. / Alta Mira Ct. / MO 364 WB Ramps
(38.76954, -90.74393) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
45.7200 		Freeway Ramps (Grade-Separated)
Single-Lane 		2014
O'Fallon, MO
St. Charles Co.
United States 		Paul Renaud Blvd. / Lake St Louis Blvd. / Curtis Ln.
(38.75382, -90.80034) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
39.6240 		Other (At-Grade)
Single-Lane 		2017 Year Completed estimated (2017-2018).
O'Fallon, MO
St. Charles Co.
United States 		Technology Dr. / Waterbury Falls Dr.
(38.71843, -90.69627) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
39.6240 		Other (At-Grade)
Single-Lane 		2003 Year Completed estimated (2002-2003). Southwest leg added 2008-2009.
O'Fallon, MO
St. Charles Co.
United States 		Technology Dr. / Progress Point Pkwy. / (parking)
(38.71685, -90.69499) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
39.6240 		Other (At-Grade)
Single-Lane 		2003 Year Completed estimated (2002-2003).
Weldon Spring, MO
St. Charles Co.
United States 		Weldon Spring Rd. / Technology Dr. / Siedentop Rd.
(38.71551, -90.68906) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
39.6240 		Other (At-Grade)
Single-Lane 		2004 Painted splitter island on east leg. Year Completed estimated (2003-2004).
Clyde, MI
St. Clair Co.
United States 		M-136 (North Rd. - Keewahdin Rd.) / North Rd.
(43.03759, -82.52593) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane 		2023 Project cost $1.2 million. https://content.govdelivery.com/accounts/MIDOT/bulletins/35beb0e
China, MI
St. Clair Co.
United States 		Fred W Moore Hwy. / Wadhams Rd.
(42.81537, -82.55479) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane 		2021 Year Completed estimated (2019-2022).
Caseyville, IL
St. Clair Co.
United States 		George E Chance Pkwy. / (future road) / (parking)
(38.64435, -89.98704) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
39.6240 		Other (At-Grade)
Single-Lane 		2007 Year Completed estimated (2007-2008).
Caseyville, IL
St. Clair Co.
United States 		George E Chance Pkwy. / Blackwood Ridge / Boreal Ridge
(38.64452, -89.99106) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
39.6240 		Other (At-Grade)
Single-Lane 		2007 Year Completed estimated (2007-2008).
Caseyville, IL
St. Clair Co.
United States 		George E Chance Pkwy. / Villa Valley / Donner Ridge
(38.64193, -90.00523) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
39.6240 		Other (At-Grade)
Single-Lane 		2007 Year Completed estimated (2007-2008).
Caseyville, IL
St. Clair Co.
United States 		George E Chance Pkwy. / Laurel Flats Dr. / (future roads)
(38.63746, -90.00941) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
39.6240 		Other (At-Grade)
Single-Lane 		2007 Year Completed estimated (2007-2008).
Swansea, IL
St. Clair Co.
United States 		Berwick Crossing
(38.53100, -89.92281) 		Other
Existing 		Unknown
Unknown 		2 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Unknown
Shiloh, IL
St. Clair Co.
United States 		Wingate Blvd. / London Ln.
(38.52931, -89.92521) 		Other
Existing 		Unknown
Unknown 		3 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Unknown
Mascoutah, IL
St. Clair Co.
United States 		Falling Leaf Way / Timberbrook Dr. / Antique Ln.
(38.50300, -89.81853) 		Other
Existing 		Uncontrolled
Unknown 		4 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Unknown 		No splitter islands.
Belleville, IL
St. Clair Co.
United States 		SR 159 (N Illinois St. - S Illinois St.) / E Main St. / W Main St.
(38.51360, -89.98421) 		Other
Existing 		All-Way Yield
Unknown 		4 Approaches
0 Driveways
47.2440 		Other (At-Grade)
Single-Lane 		Painted splitter islands. Circle with roundabout features.
Columbus, MI
St. Clair Co.
United States 		Gratiot Ave. / Palms Rd.
(42.85156, -82.63709) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane 		2021 https://www.thetimesherald.com/story/news/2021/09/29/roundabout-palms-gratiot-open-traffic-week-columbus-twp/5913286001/
Centreville, IL
St. Clair Co.
United States 		SR 13 / SR 157
(38.55853, -90.09956) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
44.1960 		Other (At-Grade)
Single-Lane 		2008
Fairview Heights, IL
St. Clair Co.
United States 		Dunhill Dr. / Northshore Dr.
(38.61012, -89.97116) 		Other
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
31.7309 		Other (At-Grade)
Single-Lane 		2006 No splitter islands. ICD estimated from Google Maps linework.
O'Fallon, IL
St. Clair Co.
United States 		Milburn School Rd. / Old Collinsville Rd.
(38.61444, -89.96636) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
31.7290 		Other (At-Grade)
Single-Lane 		2018 ICD estimated from Google Maps linework.
Port Huron, MI
St. Clair Co.
United States 		Range Rd. / Dove Rd. / I-94 EB Off-Ramp
(42.94948, -82.50186) 		Roundabout
Existing 		All-Way Yield
Unknown 		4 Approaches
0 Driveways
0.0000 		Freeway Ramps (Grade-Separated)
Unknown 		2020 https://www.thetimesherald.com/story/news/2020/09/02/range-and-dove-roads-roundabout-set-open-soon/5691922002/
Kimball, MI
St. Clair Co.
United States 		Lapeer Rd. / Allen Rd.
(42.98365, -82.52408) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
41.9380 		Other (At-Grade)
Single-Lane 		2018 https://www.thetimesherald.com/story/news/local/2018/08/01/lapeer-roundabout-opening-traffic-thursday/881947002/ ICD estimated from Google Maps linework.