Roundabouts Database

29869 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
Castle Highlands, CO
Douglas Co.
United States 		Wolfensberger Rd. / Plum Creek Pkwy. / Coachline Rd.
(39.37564, -104.88568) 		Roundabout
Existing 		All-Way Yield
Unknown 		4 Approaches
0 Driveways
51.8160 		Other (At-Grade)
Multilane (2 Lane, 2x2 max) 		2018 Year Completed estimated (2017-2019).
Sykesville, MD
Carroll Co.
United States 		Smithfield Ave. / Warfield Ave.
(39.37673, -76.96410) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
47.0835 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		2007 Elliptical shape. ICD estimated from Google Maps linework.
Mason, OH
Warren Co.
United States 		Mason Montgomery Rd. / Bethany Rd.
(39.37924, -84.30723) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
49.8513 		Other (At-Grade)
Single-Lane 		2015 Right turn lanes on all approaches, expandable to 2 lanes. ICD estimated from Google Maps linework.
Hamilton, OH
Butler Co.
United States 		Hamilton Mason Rd. / Hamilton Enterprise Park Dr. / Gilmore Rd.
(39.37927, -84.51743) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
40.6196 		Other (At-Grade)
Single-Lane 		2019 Existing Gilmore Road was relocated to align with existing Hamilton Enterprise Park Dr. A single-lane modern roundabout with 150' inscribed diameter. ICD estimated from Google Maps linework.
Castle Rock, CO
Douglas Co.
United States 		Autumn Sage St. / Valley View Dr.
(39.38026, -104.81919) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
62.4840 		Other (At-Grade)
Single-Lane 		2016 Year Completed estimated (2015-2017).
Ijamsville, MD
Frederick Co.
United States 		Royal Saint Andrews Pl. / Quail Creek Pl.
(39.38039, -77.30788) 		Other
Existing 		Unknown
Unknown 		3 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Unknown
Fairfield Township, OH
Butler Co.
United States 		Hamilton Mason Rd. / Hancock Ave. / Grand Blvd. / Tuley Rd. / Tylersville Rd.
(39.38134, -84.53572) 		Roundabout
Existing 		All-Way Yield
None 		5 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane 		2022 https://www.journal-news.com/news/five-points-roundabout-construction-to-happen-in-2022-in-hamilton/XYJYRDXKBVEK7DSQ7RPFT7RNFA/
Ballenger Creek, MD
Frederick Co.
United States 		Holiday Dr. / Spectrum Dr.
(39.38178, -77.40206) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
44.1960 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		2008 Left turn lane trap in circulatory roadway.
Castle Rock, CO
Douglas Co.
United States 		N Rocky View Rd. / Valley View Rd. / High Point Rd.
(39.38189, -104.81125) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
62.4840 		Other (At-Grade)
Single-Lane 		2016 Year Completed estimated (2015-2017).
Frederick, MD
Frederick Co.
United States 		Jefferson Pike (MD 180) / Mt Zion Rd.
(39.38286, -77.48054) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
36.9250 		Other (At-Grade)
Single-Lane 		2019 Opened August 2019. https://www.fredericknewspost.com/news/politics_and_government/public_safety/md-roundabout-opened/article_e67c26f7-ac5c-5931-b2e0-9e68faaa77d7.html ICD estimated from Google Maps linework.
Mount Washington, MD
Baltimore Co.
United States 		Quarry Lake Dr. / Stone Cliff Dr.
(39.38398, -76.69603) 		Other
Existing 		Other
Unknown 		2 Approaches
1 Driveways
0.0000 		Other (At-Grade)
Single-Lane 		Uncontrolled entry on southeast leg.
Castle Rock, CO
Douglas Co.
United States 		Autumn Sage St. / Copper Cloud Dr. / Trail Stone Cir.
(39.38614, -104.82199) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
57.2310 		Other (At-Grade)
Single-Lane 		2005 Year Completed estimated (2005-2006). ICD estimated from Google Maps linework.
Liberty Township, OH
Butler Co.
United States 		Princeton Rd. / Maud Hughes Rd.
(39.38674, -84.41100) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
39.6240 		Other (At-Grade)
Single-Lane 		2023 This is Butler County's 41st roundabout. It opened November 16th, 2023. https://www.bceo.org/news/2023/03/princeton-rd-roundabout-bridge-construction-begins/
Pikesville, MD
Baltimore Co.
United States 		Travertine Dr.
(39.38721, -76.68990) 		Other
Existing 		Unknown
Unknown 		4 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Unknown 		Parking along circulatory roadway; pedestrian access to central island.
Basalt, CO
Eagle Co.
United States 		Willits Ln. / E Valley Rd.
(39.38865, -107.08520) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
38.7680 		Other (At-Grade)
Single-Lane 		2011 https://www.aspentimes.com/news/willits-lane-roundabout-due-for-work/ https://www.gouldconstruction.com/willits-lane-east-valley-road-roundabout-2/ ICD estimated from Google Maps linework.
Williamstown, WV
Wood Co.
United States 		Highland Ave. (WV 14) / Williamstown Pike (WV 31)
(39.38888, -81.44158) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane 		2020 https://www.newsandsentinel.com/news/local-news/2020/11/williamstown-roundabout-opens-to-traffic/ https://www.youtube.com/watch?v=iusQxGx9zLA
Linganore, MD
Frederick Co.
United States 		Old National Pike / Eaglehead Dr.
(39.38995, -77.31098) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
50.2920 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		2008 South leg stubbed. Constructed initially as single-lane roundabout in 2007-2008. Expanded into two-lane roundabout 2016-2018.
Linganore, MD
Frederick Co.
United States 		Mussetter Rd. / Whiterose Dr. / Whiterose Way
(39.39008, -77.29747) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
41.1480 		Other (At-Grade)
Single-Lane 		2002 Painted splitter islands on three legs. Year Completed estimated (1988-2005).
Liberty Township, OH
Butler Co.
United States 		Hughes Woods Ln. / Hughes Ridge Ln.
(39.39099, -84.40464) 		Other
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
43.3818 		Other (At-Grade)
Single-Lane 		1998 No splitter islands. ICD estimated from Google Maps linework.
Liberty Twp, OH
Butler Co.
United States 		Princeton Rd. / Yankee Rd.
(39.39133, -84.38398) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
35.9975 		Other (At-Grade)
Single-Lane 		2017 Opened in August 2017. ICD estimated from Google Maps linework.
Owings Mills, MD
Baltimore Co.
United States 		Ballard Green Dr. / Wilson Shannon Dr. / Julia Ln.
(39.39162, -76.80439) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
36.5760 		Other (At-Grade)
Single-Lane 		2017 Year Completed estimated (2017-2018).
Castle Rock, CO
Douglas Co.
United States 		Rising Sun Dr. / Autumn Sage St.
(39.39210, -104.82736) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
47.0731 		Other (At-Grade)
Single-Lane 		2005 Year Completed estimated (2004-2007). ICD estimated from Google Maps linework.
Ballenger Creek, MD
Frederick Co.
United States 		Jefferson Technology Pkwy. / Jefferson Station Blvd.
(39.39223, -77.45291) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
42.6720 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		2014 Year Completed estimated (2013-2015).
Ballenger Creek, MD
Frederick Co.
United States 		Jefferson Technology Pkwy. / (unknown)
(39.39256, -77.45666) 		Unknown
Existing 		Unknown
Unknown 		4 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Unknown
Owings Mills, MD
Baltimore Co.
United States 		(unknown)
(39.39269, -76.78657) 		Other
Existing 		Unknown
Unknown 		2 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane
Liberty Township, OH
Butler Co.
United States 		Berkshire Pl. / Amberly Ct. / Wiltshire Ct.
(39.39282, -84.34687) 		Other
Existing 		All-Way Stop
None 		4 Approaches
0 Driveways
27.6898 		Other (At-Grade)
Single-Lane 		2002 Stop control and no splitter islands. ICD estimated from Google Maps linework.
New Market, MD
Frederick Co.
United States 		Eaglehead Dr. / Pecking Stone St.
(39.39397, -77.30943) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
24.3840 		Other (At-Grade)
Single-lane w/ Traversable Central Island 		2016 Year Completed estimated (2015-2017).
Owings Mills, MD
Baltimore Co.
United States 		Painters Mill Rd. / Lyons Mill Rd.
(39.39425, -76.78747) 		Other
Existing 		All-Way Yield
Unknown 		3 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Multilane (2 Lane, unspecified)
New Market, MD
Frederick Co.
United States 		Empire Blvd. / Edwardian Ln. / Jacobian Pl.
(39.39428, -77.29567) 		Other
Existing 		Unknown
Unknown 		3 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane 		Parking along circulatory roadway.
Liberty Township, OH
Butler Co.
United States 		Carriage House Blvd. / Thoroughbred Ln. / Winner Circle Dr.
(39.39434, -84.45087) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
35.0730 		Other (At-Grade)
Single-Lane 		2014 ICD estimated from Google Maps linework.
Liberty Township, OH
Butler Co.
United States 		The Trails Blvd. / Kensington Trl. / Windsor Trl. / Cambridge Trl.
(39.39451, -84.34693) 		Other
Existing 		All-Way Stop
None 		4 Approaches
0 Driveways
50.7634 		Other (At-Grade)
Single-Lane 		2002 Stop control; no splitter islands. ICD estimated from Google Maps linework.
Frederick, MD
Frederick Co.
United States 		Jefferson Station Blvd. / Jefferson Commons Way
(39.39479, -77.44916) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
45.7200 		Other (At-Grade)
Multilane (2 Lane, 2x1 max) 		2015 Year Completed estimated (2013-2015).
Brigantine, NJ
Atlantic Co.
United States 		Brigantine Blvd. / Bayshore Ave. / 34th St. S / (unknown) / (parking lot)
(39.39482, -74.38953) 		Other
Existing 		Other
None 		7 Approaches
0 Driveways
28.6120 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		All entries except Brigantine Blvd controled by stop signs. ICD estimated from Google Maps linework.
Frederick, MD
Frederick Co.
United States 		Mercantile Dr. E / Rodes Cir.
(39.39507, -77.44311) 		Other
Existing 		Unknown
Unknown 		4 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane 		No splitter islands.
El Jebel, CO
Eagle Co.
United States 		El Jebel Rd. / Shadow Rock Rd.
(39.39554, -107.08999) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
128.2910 		Other (At-Grade)
Single-Lane 		2017 https://www.aspentimes.com/news/el-jebel-road-roundabout-opens-saturday/ ICD estimated from Google Maps linework.
New Market, MD
Frederick Co.
United States 		Eaglehead Dr. / Tomahawk St. / Fallfish Ct.
(39.39677, -77.30826) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
35.0520 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		2018 Year Completed estimated (2017-2018).
Linganore, MD
Frederick Co.
United States 		Lake Linganore Blvd. / Eaglehead Dr.
(39.39732, -77.31047) 		Roundabout
Existing 		All-Way Yield
Unknown 		3 Approaches
1 Driveways
0.0000 		Other (At-Grade)
Single-Lane 		2019 Year Completed estimated (2018-2022).
Villages of Winterset, MD
Baltimore Co.
United States 		Runnymeade Rd. / New Town Blvd. / Bon Haven Ln.
(39.39893, -76.81700) 		Other
Existing 		Unknown
Unknown 		4 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane
Silver Springs, NV
Lyon Co.
United States 		US 50 / USA Pkwy. / Opal Ave.
(39.40014, -119.26883) 		Roundabout
Existing 		All-Way Yield
Unknown 		4 Approaches
0 Driveways
64.0080 		Other (At-Grade)
Multilane (3+ Lane) 		2017 Consecutive double-left turns.
Liberty Township, OH
Butler Co.
United States 		Yankee Rd. / Millikin Rd.
(39.40022, -84.38541) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
34.1471 		Other (At-Grade)
Single-Lane 		2018 ICD estimated from Google Maps linework.
Carbondale, CO
Garfield Co.
United States 		CO-133 / Main St.
(39.40113, -107.21968) 		Roundabout
Existing 		All-Way Yield
Rectangular Rapid Flashing Beacon (RRFB) 		4 Approaches
0 Driveways
42.4526 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		2013 ICD estimated from Google Maps linework.
Reno, NV
Washoe Co.
United States 		Herz Blvd. / Summit Sierra Blvd.
(39.40118, -119.75215) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
45.7200 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		2006 Concentric circulatory roadway striping. Year Completed estimated (2004-2006).
Liberty Township, OH
Butler Co.
United States 		Millikin Rd. / Maud Hughes Rd.
(39.40153, -84.40943) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
39.6837 		Other (At-Grade)
Single-Lane 		2013 ICD estimated from Google Maps linework.
Towson, MD
Baltimore Co.
United States 		MD 45 / MD 146 / Joppa Rd. / Allegheny Ave.
(39.40185, -76.60230) 		Roundabout
Existing 		All-Way Yield
None 		5 Approaches
0 Driveways
47.9892 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		1998 Opened October 1998. Exit striping retrofitted to roundabout after opening. Hotdog/racetrack shape. ICD estimated from Google Maps linework. 21442
Linganore, MD
Frederick Co.
United States 		Finn Dr. / Douglas Ave. / Huckleberry Way
(39.40210, -77.29509) 		Other
Existing 		Unknown
Unknown 		4 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane 		Pedestrian access to central island. No splitter islands.
Martinsville, IN
Morgan Co.
United States 		SR 39 / I-69 NB Ramps / Southview Dr.
(39.40262, -86.44528) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
0.0000 		Freeway Ramps (Grade-Separated)
Single-Lane 		2021 Year Completed estimated (2020-2021). https://i69finishline.com/construction-schedule/.
Liberty Township, OH
Butler Co.
United States 		Millikin Rd. / Pinckney Trl.
(39.40263, -84.43077) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
39.6240 		Other (At-Grade)
Single-Lane 		2021
Reno, NV
Washoe Co.
United States 		SR 341 (Geiger Grade Rd.) / Veterans Pkwy. / (parking)
(39.40271, -119.74165) 		Roundabout
Existing 		All-Way Yield
Unknown 		4 Approaches
0 Driveways
62.4840 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		2011 Double left (left, left-through-right) on south leg; double right (left-through-right, right) on west leg.
Perry Hall, MD
Baltimore Co.
United States 		E Joppa Rd. / Scott Moore Way / Cowenton Ave.
(39.40290, -76.44124) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
38.1000 		Other (At-Grade)
Single-Lane 		2008 Right-turn bypass lane on west leg.
Townsend, DE
New Castle Co.
United States 		Karins Circle
(39.40433, -75.69677) 		Other
Existing 		Unknown
Unknown 		4 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane
Martinsville, IN
Morgan Co.
United States 		SR 39 (Morton Ave.) / I-69 SB Ramps / Rogers Rd.
(39.40439, -86.44597) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
0.0000 		Freeway Ramps (Grade-Separated)
Multilane (2 Lane, unspecified) 		2021 I-69 freeway opened 12/23/2021 - see https://content.govdelivery.com/accounts/INDOT/bulletins/30250b9 ** Roundabout opened with temporary configuration while new southbound ramp construction is completed
Perry Hall, MD
Baltimore Co.
United States 		Georgia Belle Dr. / Fragrence Way / Harcrest Way
(39.40467, -76.42700) 		Other
Existing 		All-Way Yield
Unknown 		4 Approaches
4 Driveways
0.0000 		Other (At-Grade)
Single-Lane
Perry Hall, MD
Baltimore Co.
United States 		Scott Moore Way / Honeygo Center Dr.
(39.40491, -76.44142) 		Other
Existing 		All-Way Yield
Unknown 		3 Approaches
1 Driveways
0.0000 		Other (At-Grade)
Single-Lane 		Pedestrian access to central island.
White Marsh Station, MD
Baltimore Co.
United States 		Carrington Dr. / Jerome Ave.
(39.40574, -76.40236) 		Other
Existing 		Unknown
Unknown 		4 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane 		No splitter islands.
Owings Mills, MD
Baltimore Co.
United States 		Grand Central Ave. / (parking)
(39.40581, -76.78033) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
48.7680 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		2014 Year Completed estimated (2011-2014).
Fairfield Township, OH
Butler Co.
United States 		Millikin Rd. / Morris Rd. / Carter Cir.
(39.40585, -84.49448) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
36.5760 		Other (At-Grade)
Single-Lane 		2024 Roundabout opened August 3, 2024.
Frederick, MD
Frederick Co.
United States 		S East St. / (future road)
(39.40599, -77.40392) 		Roundabout
Existing 		All-Way Yield
None 		2 Approaches
0 Driveways
51.8160 		Other (At-Grade)
Multilane (2 Lane, 2x1 max) 		2009 Year Completed estimated (2009-2011). East leg is stubbed for future connection.
Frederick, MD
Frederick Co.
United States 		Butterfly Ln. / Himes Ave.
(39.40671, -77.44764) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Unknown 		2020 https://www.cityoffrederickmd.gov/CivicAlerts.aspx?aid=6432
Frederick, MD
Frederick Co.
United States 		Briarcliff Ln. / Briarcliff Way / Cliffside Terrace
(39.40696, -77.34925) 		Other
Existing 		Unknown
Unknown 		4 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane 		No splitter islands.
Rose, Calabria
Cosenza
Italy 		SP234 / SP247
(39.40709, 16.26141) 		Roundabout
Existing 		All-Way Yield
Unknown 		4 Approaches
0 Driveways
 Other (At-Grade)
Single-Lane
Owings Mills, MD
Baltimore Co.
United States 		Grand Central Ave. / Waverly Ln.
(39.40713, -76.78413) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
39.6240 		Other (At-Grade)
Single-Lane 		2014 Year Completed estimated (2011-2014). West leg added 2015.
Frederick, MD
Frederick Co.
United States 		Claridge Dr. S / Spring Ridge Pkwy.
(39.40767, -77.33577) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
2 Driveways
35.0520 		Other (At-Grade)
Single-Lane 		2002 Painted splitter islands on two legs. Year Completed estimated (1988-2005).
Montalto Uffugo, Calabria
Cosenza
Italy 		SP247 (Via Sila) / Via Coretta
(39.40860, 16.25275) 		Roundabout
Existing 		All-Way Yield
Unknown 		4 Approaches
0 Driveways
 Other (At-Grade)
Single-Lane
Casal da Boavista de São Gregório, Leiria
Caldas da Rainha
Portugal 		Rua Doutor Vieira Pereira / Rua Inseparáveis De Lubango / Rua da Crocha
(39.40878, -9.12190) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
 Other (At-Grade)
Multilane (2 Lane, unspecified)
Townsend, DE
New Castle Co.
United States 		Glen Mohr Dr. / Perthshire Dr. / S Odessa Blvd.
(39.40908, -75.63633) 		Other
Existing 		Unknown
Unknown 		3 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane
Owings Mills, MD
Baltimore Co.
United States 		New Town Blvd. / Rangeford Dr.
(39.40957, -76.80654) 		Other
Existing 		Unknown
Unknown 		4 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane
Perry Hall, MD
Baltimore Co.
United States 		Seven Courts Dr. / Proctor Ln.
(39.41060, -76.48483) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
27.4320 		Other (At-Grade)
Single-Lane 		2008 Year Completed estimated (2007-2008).
Joppa, MD
Harford Co.
United States 		Trimble Rd. / Fort Hoyle Rd.
(39.41183, -76.33325) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
30.4800 		Other (At-Grade)
Single-Lane 		2012 Year Completed estimated (2011-2013).
Fort Bragg, CA
Mendocino Co.
United States 		Hwy 1 / Simpson Ln.
(39.41239, -123.80830) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
52.5958 		Other (At-Grade)
Single-Lane 		2012 ICD estimated from Google Maps linework.
Owings Mills, MD
Baltimore Co.
United States 		Upper Mill Dr. / Bluestem Ct. /Spring Willow Ct. / Bayline Cir.
(39.41253, -76.82032) 		Other
Existing 		Unknown
Unknown 		4 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane 		No splitter islands.
Terre Haute, IN
Vigo Co.
United States 		IN-46 / IN-641 NB Ramps
(39.41253, -87.33459) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
36.9093 		Freeway Ramps (Grade-Separated)
Single-Lane 		2016 ICD estimated from Google Maps linework.
Frederick, MD
Frederick Co.
United States 		Hillsborough Dr. / Hillsborough Terrace / Forest Hills Ct.
(39.41266, -77.34441) 		Other
Existing 		Unknown
Unknown 		3 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane 		No splitter islands.
Sykesville, MD
Carroll Co.
United States 		Bennett Rd. / Monroe Ave.
(39.41306, -76.92967) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
26.7590 		Other (At-Grade)
Single-Lane 		2006 ICD estimated from Google Maps linework.
Castle Rock, CO
Douglas Co.
United States 		New Beale St. / (parking)
(39.41325, -104.87702) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
39.6240 		Other (At-Grade)
Single-Lane 		2007 Year Completed estimated (2006-2008).
Liberty Township, OH
Butler Co.
United States 		Kyles Station Rd. / Cincinnati Dayton Rd.
(39.41390, -84.36743) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
40.5994 		Other (At-Grade)
Single-Lane 		2016 ICD estimated from Google Maps linework.
Terre Haute, IN
Vigo Co.
United States 		IN-46 / IN-641 SB Ramps
(39.41463, -87.33553) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
 Freeway Ramps (Grade-Separated)
Single-Lane 		2016
Liberty Township, OH
Butler Co.
United States 		Kyles Station Rd. / Yankee Rd.
(39.41489, -84.38421) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
40.5988 		Other (At-Grade)
Single-Lane 		2013 ICD estimated from Google Maps linework.
Townsend, DE
New Castle Co.
United States 		Robinson Rd. / Goldsborough Dr.
(39.41614, -75.65156) 		Other
Existing 		Unknown
Unknown 		4 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane 		No splitter islands on three legs.
Silver Springs, NV
Lyon Co.
United States 		US 50 / Alt US 95
(39.41616, -119.22497) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane 		2020 https://mynews4.com/news/local/new-us-5095a-traffic-roundabout-to-open-in-silver-springs-tomorrow
Castle Rock, CO
Douglas Co.
United States 		N Meadows Dr. / (unknown)
(39.41690, -104.89226) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
53.3400 		Other (At-Grade)
Multilane (2 Lane, 2x2 max) 		2021
Liberty Township, OH
Butler Co.
United States 		Kyles Station Rd. / Lesourdsville West Chester Rd.
(39.41743, -84.43708) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
40.5974 		Other (At-Grade)
Single-Lane 		2012 ICD estimated from Google Maps linework.
Lutherville-Timonium, MD
Baltimore Co.
United States 		MD 139 (Charles St.) / Bellona Ave.
(39.41790, -76.62900) 		Roundabout
Removed 		All-Way Yield
None 		4 Approaches
0 Driveways
28.9560 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		1999 Two-lane circulatory roadway across northern half.
Castle Rock, CO
Douglas Co.
United States 		Castle Oaks Dr. / Arabella Dr.
(39.41863, -104.77860) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
36.5760 		Other (At-Grade)
Single-Lane 		2006
Castle Rock, CO
Douglas Co.
United States 		Promenade Pkwy. / (parking lots)
(39.41882, -104.87797) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
41.5192 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		2016 ICD estimated from Google Maps linework.
Linganore, MD
Frederick Co.
United States 		Boyers Mill Rd. / Eaglehead Dr.
(39.41912, -77.30650) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
33.5280 		Other (At-Grade)
Single-Lane 		2018
Chillicothe, OH
Ross Co.
United States 		SR 159 / SR 207
(39.41938, -82.95615) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane 		2020 https://www.facebook.com/ODOTDistrict9/videos/ross-207-extension-first-trip/344554030308290/
Townsend, DE
New Castle Co.
United States 		N Odessa Blvd. / Tweedsmere Dr. / Aviemore Dr. / Ravenglass Dr.
(39.41965, -75.63644) 		Other
Existing 		Unknown
Unknown 		4 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane
Hanover Township, OH
Butler Co.
United States 		Stahlheber Rd. / Morman Rd.
(39.42038, -84.64629) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
39.6240 		Other (At-Grade)
Single-Lane 		2023
Terre Haute, IN
Vigo Co.
United States 		Willow Run Ct. / Aspen Ct. / Magnolia Ct.
(39.42072, -87.32787) 		Other
Existing 		Unknown
Unknown 		4 Approaches
0 Driveways
101.4886 		Other (At-Grade)
Single-Lane 		ICD estimated from Google Maps linework.
Liberty Township, OH
Butler Co.
United States 		Aspenwood Dr. / Aspen Trail Blvd.
(39.42119, -84.44619) 		Other
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
26.7559 		Other (At-Grade)
Single-Lane 		2003 No splitter islands. ICD estimated from Google Maps linework.
Owings Mills, MD
Baltimore Co.
United States 		Tollgate Rd. / Lastgage Rd.
(39.42149, -76.78482) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
28.6010 		Other (At-Grade)
Single-Lane 		2004 ICD estimated from Google Maps linework.
Linganore, MD
Frederick Co.
United States 		Woodridge Rd. / Woodland Rd.
(39.42155, -77.32956) 		Other
Existing 		Unknown
Unknown 		3 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane 		No splitter islands.
Castle Rock, CO
Douglas Co.
United States 		Promenade Pkwy. / (parking lot)
(39.42238, -104.87869) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
29.5233 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		2016 ICD estimated from Google Maps linework.
Martinsville, IN
Morgan Co.
United States 		SR 252 (Morgantown Rd.) / Cramertown Loop
(39.42394, -86.39938) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane 		2021 Opened 12/2021 as part of the I-69 opening around Martinsville. https://i69finishline.com/construction-schedule/.
Castle Rock, CO
Douglas Co.
United States 		Castle Rock Pkwy. / Promenade Pkwy. / I-25 SB Off-Ramp / I-25 NB Ramps
(39.42427, -104.87786) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
43.3611 		Freeway Ramps (Grade-Separated)
Multilane (2 Lane, unspecified) 		2016 ICD estimated from Google Maps linework.
Martinsville, IN
Morgan Co.
United States 		SR 252 (Morgantown Rd.) / I-69 NB Ramps
(39.42498, -86.40092) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
0.0000 		Freeway Ramps (Grade-Separated)
Single-Lane 		2021 Replaced at-grade signalized intersection.
Chillicothe, OH
Ross Co.
United States 		SR 159 / SR 180
(39.42539, -82.95429) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane 		2020 https://www.facebook.com/ODOTDistrict9/videos/ross-207-extension-first-trip/344554030308290/
Middletown, DE
New Castle Co.
United States 		St Annes Church Rd. / Wiggins Mill Rd.
(39.42541, -75.72769) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
34.1348 		Other (At-Grade)
Single-Lane 		2010 Previous intersection was relocated when converted to roundabout. ICD estimated from Google Maps linework.
Virginia Footills, NV
Washoe Co.
United States 		McCauley Ranch Blvd. / Gold Mine Dr.
(39.42575, -119.70909) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
41.1480 		Other (At-Grade)
Single-Lane 		2007 Painted splitter islands on all legs.
Martinsville, IN
Morgan Co.
United States 		SR 252 (Morgantown Rd.) / I-69 SB Ramps / Hospital Dr.
(39.42578, -86.40211) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
0.0000 		Freeway Ramps (Grade-Separated)
Single-Lane 		2021 Replaced at-grade signalized intersection. Opened to traffic 12/2021. https://i69finishline.com/construction-schedule/.