Roundabouts Database

30012 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
The Legends, DE
New Castle Co.
United States 		Wittington Way / Casper Way / Sheehan Dr.
(39.46536, -75.70967) 		Other
Existing 		All-Way Yield
Unknown 		3 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane 		Pedestrian facility in central island.
Middletown, OH
Warren Co.
United States 		Union Rd. / Greentree Rd.
(39.46532, -84.31978) 		Roundabout
Existing 		All-Way Yield
Unknown 		4 Approaches
0 Driveways
36.8813 		Other (At-Grade)
Single-Lane 		2017 ICD estimated from Google Maps linework.
Bel Air South, MD
Harford Co.
United States 		Woodsdale Rd. / Box Hill Corporate Center Dr. / (parking)
(39.46498, -76.31016) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
30.4800 		Other (At-Grade)
Single-Lane 		2014 Year Completed estimated (2013-2015).
Cockeysville, MD
Baltimore Co.
United States 		Lord Byron Ln. / Duke of York Ln.
(39.46487, -76.63164) 		Other
Existing 		Unknown
Unknown 		3 Approaches
1 Driveways
0.0000 		Other (At-Grade)
Single-Lane 		No splitter islands.
Nelsonville, OH
Athens Co.
United States 		W Washington St. / John Lloyd Evans Dr. / Diamond Brick Rd.
(39.46440, -82.25096) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
39.6240 		Other (At-Grade)
Single-Lane 		2012
Terre Haute, IN
Vigo Co.
United States 		IN-42 / Swalls Dr.
(39.46157, -87.28667) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
36.8833 		Other (At-Grade)
Single-Lane 		2013 Year Completed estimated (2011-2014). ICD estimated from Google Maps linework.
Owings Mills, MD
Baltimore Co.
United States 		Worthington Rd. / Hunters Glen
(39.46145, -76.74231) 		Other
Existing 		Unknown
Unknown 		3 Approaches
1 Driveways
0.0000 		Other (At-Grade)
Single-Lane 		No splitter islands.
Castle Pines, CO
Douglas Co.
United States 		Lagae Rd. / Monarch Blvd.
(39.46134, -104.87935) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
36.8834 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		2018 ICD estimated from Google Maps linework.
Kingsville, MD
Baltimore Co.
United States 		MD 147 (Harford Rd.) / Glen Arm Rd. / Mt Vista Rd.
(39.46045, -76.45652) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
35.0397 		Other (At-Grade)
Single-Lane 		2018 https://www.baltimoresun.com/maryland/harford/aegis/ph-ag-harford-road-roundabout-20180102-story.html ICD estimated from Google Maps linework.
Wormans Mill, MD
Frederick Co.
United States 		Palatine Dr. / Island Grove Blvd.
(39.46038, -77.38314) 		Other
Existing 		Unknown
Unknown 		3 Approaches
3 Driveways
0.0000 		Other (At-Grade)
Single-Lane 		Pedestrian access to central island. No splitter islands.
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.
Castle Pines, CO
Douglas Co.
United States 		Westbridge Dr. / Cross Canyon Trl.
(39.45951, -104.85287) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
50.2920 		Other (At-Grade)
Single-Lane 		2019 Year Completed estimated (2018-2019).
Middletown, DE
New Castle Co.
United States 		Bunker Hill Rd. / Choptank Rd.
(39.45790, -75.74350) 		Roundabout
Existing 		Unknown
Unknown 		3 Approaches
0 Driveways
31.3525 		Other (At-Grade)
Single-Lane 		2007 Rural, redesigned in 2008 to better accommodate trucks and farm equipment. ICD estimated from Google Maps linework.
Abingdon, MD
Harford Co.
United States 		Tewkesbury Rd. / Shrewsbury Rd.
(39.45775, -76.27273) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
49.7952 		Other (At-Grade)
Single-Lane 		2003 Year Completed estimated (2003-2004). http://onlinepubs.trb.org/Onlinepubs/circulars/ec083/68_Statmeyerpaper.pdf ICD estimated from Google Maps linework.
Bel Air, MD
Harford Co.
United States 		Constant Friendship Blvd. / BJ's
(39.45546, -76.31870) 		Roundabout
Existing 		Unknown
Unknown 		3 Approaches
0 Driveways
29.5092 		Other (At-Grade)
Single-Lane 		1995 Functional Class: Local ICD estimated from Google Maps linework.
Middletown, DE
New Castle Co.
United States 		Brick Mill Rd. / Dove Run Centre Dr.
(39.45413, -75.68672) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
24.3840 		Other (At-Grade)
Single-lane w/ Traversable Central Island 		2022
Abingdon, MD
Harford Co.
United States 		Four Seasons Dr. / Raking Leaf Dr. / Raking Leaf Dr. / Indian Summer Ct.
(39.45387, -76.28951) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
36.5760 		Other (At-Grade)
Single-Lane 		2006 Painted splitter islands. Pedestrian crossings at entrance lines. Year Completed estimated (2005-2007).
Middletown, DE
New Castle Co.
United States 		Gloucester Blvd. / Hampton Rd.
(39.45210, -75.68096) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
35.0439 		Other (At-Grade)
Single-Lane 		2009 ICD estimated from Google Maps linework.
Middletown, DE
New Castle Co.
United States 		Spring Arbor Dr. / Trellis Ln.
(39.45194, -75.73915) 		Other
Existing 		Unknown
Unknown 		4 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane
Mays Chapel, MD
Baltimore Co.
United States 		Ridgemont Rd.
(39.45142, -76.69629) 		Other
Existing 		Unknown
Unknown 		2 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Unknown
Frederick, MD
Frederick Co.
United States 		Greenleese Circle
(39.44847, -77.37242) 		Other
Existing 		Unknown
Unknown 		2 Approaches
1 Driveways
0.0000 		Other (At-Grade)
Single-Lane
Middletown, DE
New Castle Co.
United States 		S Ridge Ave / Private Driveway
(39.44821, -75.73234) 		Roundabout
Existing 		Unknown
None 		4 Approaches
0 Driveways
40.5794 		Other (At-Grade)
Single-Lane 		2009 ICD estimated from Google Maps linework.
Middletown, MD
Frederick Co.
United States 		Smithfield Dr. / Layla Dr. / Hoffman Dr.
(39.44814, -77.52097) 		Other
Existing 		Unknown
Unknown 		4 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane 		No splitter islands.
Fort Bragg, CA
Mendocino Co.
United States 		E Fir St. / N Harrison St.
(39.44803, -123.80204) 		Traffic Calming Circle
Removed 		One-Way/Two-Way Stop
None 		4 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane 		2019 From the City of Fort Bragg: "The City installed a small neighborhood traffic calming circle in about 2012 on E Fir Street at N Harrison Street. Unfortunately, due to many years of complaints as well as traffic collision increases at the intersection, the roundabout was removed in 2019. It is still shown in Google Maps but it is removed now and replaced with at 4-way stop intersection."
Frederick, MD
Frederick Co.
United States 		W Whitecoat Dr.
(39.44784, -77.43031) 		Other
Existing 		Unknown
Unknown 		2 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane
Frederick, MD
Frederick Co.
United States 		E Whitecoat Dr.
(39.44779, -77.42925) 		Other
Existing 		Unknown
Unknown 		2 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane
Frederick, MD
Frederick Co.
United States 		Amber Dr. / Campus Dr.
(39.44702, -77.42000) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
45.7200 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		2013 Year Completed estimated (2013-2015). Mismatch between approach lane designations and circulatory roadway striping. Inside lane from east leg must make U-turn unless the driver changes lanes.
Frederick, MD
Frederick Co.
United States 		W Huff Blvd.
(39.44689, -77.43046) 		Other
Existing 		Unknown
Unknown 		2 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane
Frederick, MD
Frederick Co.
United States 		E Huff Blvd.
(39.44685, -77.42933) 		Other
Existing 		Unknown
Unknown 		2 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane
Frederick, MD
Frederick Co.
United States 		E Fagan Dr.
(39.44594, -77.42928) 		Other
Existing 		Unknown
Unknown 		2 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane
Frederick, MD
Frederick Co.
United States 		W Fagan Ln.
(39.44591, -77.43047) 		Other
Existing 		Unknown
Unknown 		2 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane
Mays Chapel, MD
Baltimore Co.
United States 		Dipping Pond Ct.
(39.44447, -76.71101) 		Other
Existing 		Unknown
Unknown 		2 Approaches
3 Driveways
0.0000 		Other (At-Grade)
Single-Lane
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.
Terre Haute, IN
Vigo Co.
United States 		Antioch Cir. / Antioch Cir. Access Road
(39.44227, -87.33917) 		Other
Existing 		Unknown
None 		3 Approaches
0 Driveways
25.8255 		Other (At-Grade)
Single-Lane 		Parking in circulatory roadway. ICD estimated from Google Maps linework.
Terre Haute, IN
Vigo Co.
United States 		S Sycamore Terrace St. / New Margaret Dr.
(39.43997, -87.34235) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
47.0408 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		2011 ICD estimated from Google Maps linework.
(unincorporated), CO
Douglas Co.
United States 		Happy Canyon Rd. / Castle Pines Dr. S
(39.43975, -104.88723) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
34.1278 		Other (At-Grade)
Single-Lane 		2011 ICD estimated from Google Maps linework.
Frederick, MD
Frederick Co.
United States 		Synergy Way
(39.43898, -77.36665) 		Roundabout
Existing 		All-Way Yield
None 		2 Approaches
0 Driveways
36.5760 		Other (At-Grade)
Single-Lane 		2010 Year Completed estimated (2009-2011).
Virginia Footills, NV
Washoe Co.
United States 		Buchephalus Pkwy. / Copenhagen Way / Bonfire Ln.
(39.43838, -119.71442) 		Other
Existing 		Unknown
Unknown 		4 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Unknown
Terre Haute, IN
Vigo Co.
United States 		2440 Huber Ln
(39.43817, -87.38012) 		Traffic Calming Circle
Existing 		Unknown
None 		2 Approaches
4 Driveways
23.0598 		Other (At-Grade)
Single-Lane 		ICD estimated from Google Maps linework.
Terre Haute, IN
Vigo Co.
United States 		2328 Huber Ln
(39.43817, -87.38160) 		Traffic Calming Circle
Existing 		Unknown
None 		2 Approaches
2 Driveways
23.0598 		Other (At-Grade)
Single-Lane 		ICD estimated from Google Maps linework.
Terre Haute, IN
Vigo Co.
United States 		2216 Huber Ln
(39.43806, -87.38327) 		Traffic Calming Circle
Existing 		Unknown
None 		1 Approaches
2 Driveways
23.0599 		Other (At-Grade)
Single-Lane 		ICD estimated from Google Maps linework.
Frederick, MD
Frederick Co.
United States 		Synergy Way / Progress Dr.
(39.43796, -77.36660) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
35.0520 		Other (At-Grade)
Single-Lane 		2008
Virginia Footills, NV
Washoe Co.
United States 		Bucephalus Pkwy. / Show Jumper Ln.
(39.43790, -119.71097) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
39.6240 		Other (At-Grade)
Single-Lane 		2015 Painted splitter islands on north and south legs. Year Completed estimated (2014-2015).
(unincorporated), CO
Douglas Co.
United States 		Fox Sparrow Rd. / Windhaven Dr.
(39.43781, -104.73199) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
26.7495 		Other (At-Grade)
Single-Lane 		1998 Year Completed estimated (1993-1999). ICD estimated from Google Maps linework.
Virginia Footills, NV
Washoe Co.
United States 		Bucephalus Pkwy. / Burmese Ln. / Show Jumper Ln.
(39.43756, -119.70732) 		Other
Existing 		All-Way Yield
Unknown 		4 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane 		No splitter islands on north and south legs.
Townsend, DE
New Castle Co.
United States 		Tony Marchio Dr. / Campus Dr. / Stadium Way
(39.43676, -75.64873) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
53.3400 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		2014 Concentric striping on circulatory roadway. Right-turn-only arrows in all lanes of three entries. Year Completed estimated (2011-2015).
Reno, NV
Washoe Co.
United States 		Burghley Ln. / Kerrydale Ct.
(39.43443, -119.71424) 		Other
Existing 		Unknown
Unknown 		2 Approaches
5 Driveways
0.0000 		Other (At-Grade)
Unknown
Dulaney Forest, MD
Baltimore Co.
United States 		E Ridgely Rd. / Margate Rd.
(39.43199, -76.60754) 		Traffic Calming Circle
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
19.8120 		Other (At-Grade)
Single-Lane 		2013 No raised splitter islands on side street. Year Completed estimated (2012-2014).
Virginia Footills, NV
Washoe Co.
United States 		Burghley Ln. / Calais Ln.
(39.43197, -119.71530) 		Unknown
Existing 		Unknown
Unknown 		3 Approaches
4 Driveways
0.0000 		Other (At-Grade)
Single-Lane
Egg Harbor, NJ
Atlantic Co.
United States 		Tilton Road Circle
(39.43177, -74.57915) 		Signalized Roundabout/Circle
Existing 		Signal
Unknown 		5 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		Hamburger shaped.
Montalto Uffugo, Calabria
Cosenza
Italy 		SP248 (Corso Italia) / SP102 (Via Alessandro Manzoni)
(39.43119, 16.23146) 		Roundabout
Existing 		All-Way Yield
Unknown 		3 Approaches
0 Driveways
 Other (At-Grade)
Single-Lane
Parachute, CO
Garfield Co.
United States 		Old Hwy 6 / I-70 WB Ramps
(39.42982, -108.07610) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
51.8160 		Freeway Ramps (Grade-Separated)
Single-Lane 		2012
Castle Rock, CO
Douglas Co.
United States 		Sapphire Pointe Blvd. / Tremolite Dr.
(39.42908, -104.85397) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
52.5832 		Other (At-Grade)
Single-Lane 		2005 No buffer between sidewalk and circulatory roadway. ICD estimated from Google Maps linework.
Sykesville, MD
Carroll Co.
United States 		Old Washington Rd. (MD 97) / W Old Liberty Rd.
(39.42906, -77.00755) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
34.1330 		Other (At-Grade)
Single-Lane 		2000 Year Completed estimated (1995-2005). ICD estimated from Google Maps linework.
Reisterstown, MD
Baltimore Co.
United States 		Winged Foot Dr. / Crystal Downs Ct. / Kauri Cliffs Rd.
(39.42897, -76.81445) 		Other
Existing 		Unknown
Unknown 		4 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane 		No splitter islands.
Middletown, DE
New Castle Co.
United States 		St Annes Church Rd. / Levels Rd.
(39.42842, -75.73887) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
35.9783 		Other (At-Grade)
Single-Lane 		2010 Intersection was relocated when converted to roundabout. ICD estimated from Google Maps linework.
(unincorporated), CO
Douglas Co.
United States 		W Happy Canyon Rd. / Castle Pines Dr.
(39.42838, -104.90106) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
25.8306 		Other (At-Grade)
Single-Lane 		2011 ICD estimated from Google Maps linework.
Parachute, CO
Garfield Co.
United States 		Old Hwy 6 / I-70 EB Ramps / (unknown)
(39.42828, -108.07440) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
57.9120 		Freeway Ramps (Grade-Separated)
Single-Lane 		2012
Castle Rock, CO
Douglas Co.
United States 		Sapphire Pointe Blvd. / Sulfur Ln. / Peridot Ln.
(39.42788, -104.84576) 		Other
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
63.6545 		Other (At-Grade)
Single-Lane 		2003 Single-stage pedestrian crossings, fully traversable splitter islands, no buffer between sidewalk and circulatory roadway. Year Completed estimated (2002-2005). ICD estimated from Google Maps linework.
Montalto Uffugo, Calabria
Cosenza
Italy 		SP241 (Corso Italia) / Via Busento
(39.42609, 16.23949) 		Roundabout
Existing 		All-Way Yield
Unknown 		3 Approaches
0 Driveways
 Other (At-Grade)
Single-Lane
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/.
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.
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.
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/
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.
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.) / 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 		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.
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.
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.
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.
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.
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
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
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/
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
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.
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
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.
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.
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
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
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.
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.
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. / 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.
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).
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.
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.
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.
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.
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.
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).
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).
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
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
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)
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
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).
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.