Roundabouts Database

29411 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
Frederick, MD
Frederick Co.
United States 		Ballenger Creek Pike (MD 351) / Elmer Derr Rd. / English Muffin Way
(39.36625, -77.45071) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
37.8571 		Other (At-Grade)
Single-Lane 		2012 Year Completed estimated (2011-2012). ICD estimated from Google Maps linework.
Mason, OH
Warren Co.
United States 		Mason Rd. / Sarah Dr.
(39.36641, -84.31909) 		Roundabout
Existing 		All-Way Yield
Unknown 		4 Approaches
0 Driveways
32.3170 		Other (At-Grade)
Single-Lane 		2010 ICD estimated from Google Maps linework.
Kearney, MO
Clay Co.
United States 		Watson Dr. / (parking access)
(39.36660, -94.36970) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
29.5469 		Other (At-Grade)
Single-Lane 		2015 ICD estimated from Google Maps linework.
Kearney, MO
Clay Co.
United States 		Rte 92-W 6th St. / Sam Barr Dr.
(39.36785, -94.38055) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
47.0895 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		2013 ICD estimated from Google Maps linework.
Kearney, MO
Clay Co.
United States 		Rte 92-W 6th St. / Nation Rd.
(39.36791, -94.38893) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
49.8594 		Other (At-Grade)
Single-Lane 		2013 ICD estimated from Google Maps linework.
Ballenger Creek, MD
Frederick Co.
United States 		McLauren Ln. / Carston Ct. / Duncan Pl.
(39.36852, -77.43743) 		Other
Existing 		Unknown
Unknown 		4 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane 		No splitter islands.
Smithville, MO
Clay Co.
United States 		MO-92 / S Commercial Ave.
(39.36881, -94.57949) 		Roundabout
Existing 		All-Way Yield
Unknown 		4 Approaches
0 Driveways
36.9324 		Other (At-Grade)
Single-Lane 		2009 ICD estimated from Google Maps linework.
Castle Rock, CO
Douglas Co.
United States 		S Wilcox St. / South St.
(39.36917, -104.86011) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane 		2021 http://crgov.com/3296/Wilcox-and-South-Roundabout
Castle Rock, CO
Douglas Co.
United States 		N Ridge Rd. / E Enderud Blvd.
(39.36979, -104.82294) 		Roundabout
Existing 		All-Way Yield
Unknown 		3 Approaches
0 Driveways
44.3183 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		2007 ICD estimated from Google Maps linework.
Liberty Township, OH
Butler Co.
United States 		Veterans Blvd. / Reagan Way
(39.37030, -84.35617) 		Roundabout
Existing 		All-Way Yield
Rectangular Rapid Flashing Beacon (RRFB) 		4 Approaches
0 Driveways
54.8637 		Other (At-Grade)
Multilane (2 Lane, 2x1 max) 		2022 New roundabout on new alignment, Veterans Blvd, constructed for new commercial development (Costco).
Liberty Township, OH
Butler Co.
United States 		Veterans Blvd. / Bell Blvd.
(39.37220, -84.35684) 		Roundabout
Existing 		All-Way Yield
Rectangular Rapid Flashing Beacon (RRFB) 		4 Approaches
0 Driveways
54.8637 		Other (At-Grade)
Multilane (2 Lane, 2x1 max) 		2022 New road, Veterans Blvd, constructed for new development.
Hamilton, OH
Butler Co.
United States 		Hamilton Mason Rd. / LeSourdsville West Chester Rd.
(39.37223, -84.42497) 		Roundabout
Existing 		All-Way Yield
Unknown 		4 Approaches
0 Driveways
40.6237 		Other (At-Grade)
Single-Lane 		2018 Opened August 2018. ICD estimated from Google Maps linework.
Liberty Township, OH
Butler Co.
United States 		SR 129 / Cox Rd. / Veterans Blvd.
(39.37289, -84.36015) 		Roundabout
Existing 		All-Way Yield
Rectangular Rapid Flashing Beacon (RRFB) 		4 Approaches
0 Driveways
62.4840 		Other (At-Grade)
Multilane (2 Lane, 2x2 max) 		2022 New roundabout partially opened in November 2022. Full operation is scheduled in mid-December 2022. SR 129 highway was extended to Cox Road (local road) and new alignment (Veterans Blvd) was constructed to help alleviate traffic congestion and safety issues involving Liberty Way interchange with I-75.
Fairfield Township, OH
Butler Co.
United States 		Hamilton Mason Rd. / Liberty Fairfield Rd.
(39.37527, -84.48046) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
40.6219 		Other (At-Grade)
Single-Lane 		2008 Since completion, has reduced accidents by 80%. Replaced two offset T intersections. Previously controlled by two-way stop Functional Class: Major Collector ICD estimated from Google Maps linework.
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/