Roundabouts Database

29465 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
Columbia, MD
Howard Co.
United States 		Oakland Mills Rd. / MD 175 SB Ramps / (unknown)
(39.21308, -76.83456) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
36.5760 		Freeway Ramps (Grade-Separated)
Single-Lane 		2017 Year Completed estimated (2016-2017).
Columbia, MD
Howard Co.
United States 		Oakland Mills Rd. / Old Montgomery Rd.
(39.20788, -76.83157) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
38.1000 		Other (At-Grade)
Single-Lane 		2017
Clarksville, MD
Howard Co.
United States 		Linden Church Rd. / MD 32 NB Ramps
(39.22942, -76.97263) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
39.6240 		Freeway Ramps (Grade-Separated)
Single-Lane 		2013 Year Completed estimated (2011-2014).
Clarksville, MD
Howard Co.
United States 		Highland Rd. / Triadelphia Mill Rd.
(39.21551, -76.97698) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
36.5760 		Other (At-Grade)
Single-Lane 		2008
West Friendship, MD
Howard Co.
United States 		Castlebridge Rd. / Hunter's View Rd.
(39.24552, -76.90189) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
42.6720 		Other (At-Grade)
Single-Lane 		2006
West Friendship, MD
Howard Co.
United States 		Folly Quarter Rd. / Sheppard Ln. / Homewood Rd.
(39.24979, -76.93188) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
33.5280 		Other (At-Grade)
Single-Lane 		2004 Year Completed estimated (2002-2005).
Glenelg, MD
Howard Co.
United States 		Pfefferkorn Rd. / Fox Stream Way / Old Rover Rd.
(39.29067, -76.99226) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
28.9560 		Other (At-Grade)
Single-Lane 		2005 Year Completed estimated (2004-2005).
Cooksville, MD
Howard Co.
United States 		Long Corner Rd. / Penn Shop Rd.
(39.33938, -77.15284) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
28.9560 		Other (At-Grade)
Single-Lane 		2005 Year Completed estimated (1988-2005).
Camp Springs, MD
Prince George's Co.
United States 		Capital Gateway Dr. / Auth Rd. / Old Soper Rd.
(38.82403, -76.91189) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
48.7680 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		1999 Unstriped circulatory roadway. Year Completed estimated (1995-2001).
College Park, MD
Prince George's Co.
United States 		Campus Dr. / Mowatt Ln. / Valley Dr. (Alumni Dr.)
(38.98482, -76.94890) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
32.0037 		Other (At-Grade)
Single-Lane 		2004 Striped splitter island on north and east legs. Year Completed estimated (2002-2005).
Parole, MD
Anne Arundel Co.
United States 		Housley Rd. / Gateway Village Dr. / Annapolis Ridge Rd.
(38.98793, -76.55715) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
41.1480 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		2000 Right-turn-only lanes on north and south legs. Year Completed estimated (1998-2002). Converted from unstriped two-lane roundabout in 2008-2009.
Summerfield, MD
Prince George's Co.
United States 		Saint Josephs Dr. / Grove Hurst Ln.
(38.91969, -76.84060) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
53.3400 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		2012
Summerfield, MD
Prince George's Co.
United States 		Ruby Lockhart Blvd. / Taj Ln.
(38.92163, -76.84438) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
48.7680 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		2011
Glenarden, MD
Prince George's Co.
United States 		Ruby Lockhart Blvd. / Campus Way
(38.92345, -76.84696) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
48.7680 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		2011
Glenarden, MD
Prince George's Co.
United States 		Ruby Lockhart Blvd. / Evarts St. / Sir Michael Pl.
(38.92506, -76.84953) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
48.7680 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		2011 Double left-turn and double right-turn movements.
Summerfield, MD
Prince George's Co.
United States 		Campus Way / Geaton Park Pl.
(38.92577, -76.84451) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
48.7680 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		2011
Beltsville, MD
Prince George's Co.
United States 		Sellman Rd. / Woodbine Rd.
(39.03418, -76.93680) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
45.7200 		Other (At-Grade)
Single-Lane 		2008 Intersection relocated south of previous TWSC intersection.
Calverton, MD
Montgomery Co.
United States 		Fairland Rd. / Brahms Ave. / (parking)
(39.07126, -76.95403) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
50.2920 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		2008
Calverton, MD
Montgomery Co.
United States 		Fairland Rd. / Marlow Farm Terr. / Musgrove Rd.
(39.07004, -76.95264) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
35.0520 		Other (At-Grade)
Single-Lane 		2008
Calverton, MD
Montgomery Co.
United States 		Fairland Rd. / Galway Dr.
(39.06594, -76.94436) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
32.0040 		Other (At-Grade)
Single-Lane 		2008
Salisbury, MD
Wicomico Co.
United States 		Camden Ave. / Riverside Dr. / Mill St. / W Carroll St.
(38.36401, -75.60403) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		2020 One leg is a one-way street away from roundabout. http://www.wboc.com/clip/15110757/roundabout-on-riverside-drive-open-to-traffic
Hagerstown, MD
Washington Co.
United States 		Terps Blvd. / Hoosier Ct. / Nittany Lion Cir.
(39.67069, -77.73987) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
36.5760 		Other (At-Grade)
Single-Lane 		2010 Year Completed estimated (2009-2011).
Bel Air North, MD
Harford Co.
United States 		Water Tower Way / Bynum Rd.
(39.56671, -76.35712) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
28.9560 		Other (At-Grade)
Single-Lane 		2019 http://harfordcountymd.gov/ArchiveCenter/ViewFile/Item/1683
Hagerstown, MD
Washington Co.
United States 		Robinwood Dr. / Academic Blvd. / Youngstoun Dr.
(39.62804, -77.66541) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
54.8640 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		2015 https://www.heraldmailmedia.com/news/local/robinwood-drive-to-reopen-next-month-but-roundabout-questioned/article_95edc272-8319-5f1a-a05d-cfb62ada2f8f.html
California, MD
St. Mary's Co.
United States 		Amber Dr. (FDR Blvd.) / Athlone Dr. / Meath Rd.
(38.28865, -76.49920) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane 		2016 Year Completed estimated (2013-2019).
California, MD
St. Mary's Co.
United States 		FDR Blvd. / Kinnegad Dr. / Castletown Way
(38.28887, -76.50263) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane 		2016 Year Completed estimated (2013-2019).
California, MD
St. Mary's Co.
United States 		FDR Blvd. / Old Rolling Rd.
(38.29057, -76.51176) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane 		2018 Year Completed estimated (2015-2020).
Odenton, MD
Anne Arundel Co.
United States 		Piney Station Way / Black Oak Way / Barred Owl Way
(39.05532, -76.70351) 		Other
Existing 		Uncontrolled
Unknown 		3 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane
Odenton, MD
Anne Arundel Co.
United States 		Strawberry Lake Way / Field Farm Way / Found Artifact Ct.
(39.05052, -76.70858) 		Other
Existing 		Other
Unknown 		4 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane 		Oval shaped. Mix of stop and yield control.
Crofton, MD
Anne Arundel Co.
United States 		Cardinal Crest Dr. / Hallwood Ct. / Dalewood Ct. / Thornbury Ct.
(38.99364, -76.67343) 		Other
Existing 		Other
Unknown 		4 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane 		Mix of stop and uncontrolled; no splitter islands.
Polychrome Historic District, MD
Prince George's Co.
United States 		IKEA Center Blvd. / Milestone Way
(39.02224, -76.92650) 		Other
Existing 		Other
Unknown 		4 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		Mix of yield-controlled and uncontrolled entries.
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).
Fulton, MD
Howard Co.
United States 		S Maple Lawn Blvd. / Eugene Ave. / Charles Way
(39.14787, -76.91560) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
33.5280 		Other (At-Grade)
Single-Lane 		2017
Salisbury, MD
Wicomico Co.
United States 		Walston Switch Rd. / Campus Dr. / Summer Dr.
(38.37359, -75.50358) 		Roundabout
Existing 		All-Way Yield
Unknown 		4 Approaches
0 Driveways
39.6240 		Other (At-Grade)
Single-Lane 		2016 Merging right-turn bypass lane on north leg. Year Completed estimated (2013-2016).
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).
Olney, MD
Montgomery Co.
United States 		Old Baltimore Rd. / Bishops Castle Dr.
(39.14878, -77.04958) 		Traffic Calming Circle
Existing 		All-Way Yield
Unknown 		4 Approaches
0 Driveways
0.0000 		Unknown
Single-Lane 		2019 Painted splitter islands on major street; no splitter islands on side street.
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.
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.
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
Manchester, MD
Carroll Co.
United States 		Fridinger Mill Rd. / Millie Way / Hallie Ave.
(39.67369, -76.89427) 		Other
Existing 		All-Way Yield
Unknown 		4 Approaches
0 Driveways
24.3840 		Other (At-Grade)
Single-Lane 		Painted splitter islands on three legs; no splitter island on fourth leg.
Long Reach, MD
Howard Co.
United States 		Shining Oceans Way / Dried Earth Blvd.
(39.18977, -76.80673) 		Other
Existing 		Unknown
Unknown 		3 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane 		No splitter islands.
Clarksville, MD
Howard Co.
United States 		Running Fence Ln. / Preakness Circle Ln.
(39.22640, -76.94374) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
30.4800 		Other (At-Grade)
Single-Lane 		2010
Clarksville, MD
Howard Co.
United States 		Preakness Circle Ln. / Watkins Bridge Ln.
(39.22880, -76.94308) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
1 Driveways
30.4800 		Other (At-Grade)
Single-Lane 		2010
Clarksville, MD
Howard Co.
United States 		Watkins Bridge Ln. / Holly Creek Ln.
(39.22939, -76.94583) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
30.4800 		Other (At-Grade)
Single-Lane 		2010
Clarksville, MD
Howard Co.
United States 		Northern Bell Way / Bee Frances Way / Catherine Close Rd.
(39.23232, -76.97091) 		Other
Existing 		Unknown
Unknown 		3 Approaches
1 Driveways
0.0000 		Other (At-Grade)
Single-Lane
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).
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.
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.
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).
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.
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.
Salisbury, MD
Wicomico Co.
United States 		Marquis Ave. / Jim Morton Dr.
(38.39154, -75.61826) 		Other
Existing 		Unknown
Unknown 		3 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane 		No splitter islands.
Salisbury, MD
Wicomico Co.
United States 		Marquis Ave. / Victoria Park Dr.
(38.39301, -75.61582) 		Other
Existing 		Unknown
Unknown 		3 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane 		No splitter islands.
Salisbury, MD
Wicomico Co.
United States 		Clocktower Circle
(38.35831, -75.63787) 		Other
Existing 		Unknown
Unknown 		4 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane 		No splitter islands.
Salisbury, MD
Wicomico Co.
United States 		Oakside Circle
(38.33106, -75.60338) 		Other
Existing 		Unknown
Unknown 		4 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane 		No splitter islands.
Fruitland, MD
Wicomico Co.
United States 		Porter Pkwy. / Lena Ln.
(38.31160, -75.60578) 		Other
Existing 		Unknown
Unknown 		3 Approaches
1 Driveways
0.0000 		Other (At-Grade)
Single-Lane 		No splitter islands.
Fruitland, MD
Wicomico Co.
United States 		Chelsea Ann Ln.
(38.30963, -75.61094) 		Other
Existing 		Unknown
Unknown 		2 Approaches
2 Driveways
0.0000 		Other (At-Grade)
Single-Lane
Chillum, MD
Prince George's Co.
United States 		Oglethorpe St. / 20th Ave.
(38.96225, -76.97495) 		Other
Existing 		Unknown
Unknown 		2 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane 		No splitter islands.
Abingdon, MD
Harford Co.
United States 		Laurel Bush Rd. / E Wheel Rd.
(39.49411, -76.31652) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
33.5280 		Other (At-Grade)
Single-Lane 		2010 Year Completed estimated (2009-2011).
Grantsville, MD
Garrett Co.
United States 		US 219 (Chestnut Ridge Rd.) / Business US 219 (Chestnut Ridge Rd.) / I-68 WB Ramps
(39.69019, -79.10431) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
0.0000 		Freeway Ramps (Grade-Separated)
Single-Lane 		2021 https://mdot-sha-us219-i68-to-old-salisbury-rd-ga6465270-maryland.hub.arcgis.com/
Grantsville, MD
Garrett Co.
United States 		US 219 (Chestnut Ridge Rd.) / I-68 EB Ramps
(39.68842, -79.10538) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
0.0000 		Freeway Ramps (Grade-Separated)
Single-Lane 		2021 https://mdot-sha-us219-i68-to-old-salisbury-rd-ga6465270-maryland.hub.arcgis.com/
Saint Charles, MD
Charles Co.
United States 		Middletown Rd. / Billingsley Rd.
(38.60721, -76.97561) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
53.3400 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		2019 https://www.charlescountymd.gov/our-county/infrastructure/traffic-signal-projects/middletown-road-billingsley-road-roundabout
Prince Frederick, MD
Calvert Co.
United States 		Oakland Hall Rd. / Abbott Ln. / Bunker Hill Rd.
(38.50147, -76.55177) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
36.5760 		Other (At-Grade)
Single-Lane 		2015 Year Completed estimated (2014-2015).
Prince Frederick, MD
Calvert Co.
United States 		Prince Frederick Blvd. / Thoroughbred Dr. / Equestrian Way
(38.53171, -76.58916) 		Other
Existing 		Uncontrolled
Unknown 		4 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane
Prince Frederick, MD
Calvert Co.
United States 		Cambridge Pl. / Allnutt Ct. / (parking)
(38.54943, -76.59467) 		Other
Existing 		All-Way Yield
Unknown 		4 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane 		No splitter islands.
Prince Frederick, MD
Calvert Co.
United States 		Prince Frederick Blvd. / Chapline Place Blvd.
(38.55239, -76.59551) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
36.5760 		Other (At-Grade)
Single-Lane 		1998 Year Completed estimated (1993-2003). Initially constructed as two-lane roundabout with concentric striped circulatory roadway. Converted to single-lane roundabout 2007-2009.
Prince Frederick, MD
Calvert Co.
United States 		Frederick Blvd. / Auto Dr.
(38.56178, -76.60339) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
42.6720 		Other (At-Grade)
Single-Lane 		2009 Year Completed estimated (2007-2009).
Huntingtown, MD
Calvert Co.
United States 		Lorins Dr. / Cambridge Dr. / Stephanies Ln.
(38.60541, -76.61564) 		Other
Existing 		Unknown
Unknown 		4 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane 		No splitter islands; pedestrian access to central island.
Taylorville, MD
Worcester Co.
United States 		Bayberry Dr. / (parking)
(38.19142, -75.15861) 		Other
Existing 		Other
Unknown 		4 Approaches
1 Driveways
0.0000 		Other (At-Grade)
Single-Lane 		Yield control on circulatory roadway.
Wheaton-Glenmont, MD
Montgomery Co.
United States 		Redspire Dr. / Tivoli Lake Blvd.
(39.07315, -77.03208) 		Other
Existing 		Unknown
Unknown 		4 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane 		No splitter islands.
Wheaton-Glenmont, MD
Montgomery Co.
United States 		Foggy Glen Dr. / Soaring Wing Ln.
(39.08128, -77.02998) 		Other
Existing 		Unknown
Unknown 		4 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane 		No splitter islands.
Wheaton-Glenmont, MD
Montgomery Co.
United States 		Poplar Run Dr. / Night Sky Dr. / Moonlight Trail Dr.
(39.07862, -77.03729) 		Other
Existing 		Unknown
Unknown 		4 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane 		No splitter islands.
Laurel, MD
Howard Co.
United States 		Arden Ct. / Waterside Ct. / Scholars Ln.
(39.13418, -76.91140) 		Other
Existing 		All-Way Yield
Unknown 		4 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane 		No splitter islands on two legs.
Burtonsville, MD
Montgomery Co.
United States 		Bentley Park Dr. / Saddle Creek Dr.
(39.09674, -76.91863) 		Other
Existing 		Unknown
Unknown 		2 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane 		No splitter islands.
Lexington Park, MD
St. Mary's Co.
United States 		Columbus Dr. / Shining Willow Ln. / Creeping Primrose Ln.
(38.26133, -76.46983) 		Other
Existing 		Unknown
Unknown 		3 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane 		No splitter islands.
California, MD
St. Mary's Co.
United States 		Saint Georges Hundred / Saint Johns Cir. / Saint Michaels Cir.
(38.27383, -76.48964) 		Other
Existing 		Unknown
Unknown 		4 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane 		No splitter islands.
Saint-Charles, MD
Charles Co.
United States 		St Owen Ct. / Oyster Reef Pl. / Ottawa Park Pl.
(38.58026, -76.91047) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
36.5760 		Other (At-Grade)
Single-Lane 		2008
Saint-Charles, MD
Charles Co.
United States 		Smugglers Notch Ct. / Jacksonhole Pl.
(38.60188, -76.94805) 		Other
Existing 		Unknown
Unknown 		3 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane 		No splitter islands.
Potomac, MD
Montgomery Co.
United States 		Brickyard Rd. / Hackamore Dr.
(38.98567, -77.21274) 		Traffic Calming Circle
Existing 		One-Way/Two-Way Stop
Unknown 		3 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane
Potomac, MD
Montgomery Co.
United States 		Brickyard Rd. / Horseshoe Ln.
(38.99291, -77.21195) 		Traffic Calming Circle
Existing 		One-Way/Two-Way Stop
Unknown 		4 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane
Potomac, MD
Montgomery Co.
United States 		Brickyard Rd. / Brent Rd.
(38.99900, -77.22362) 		Traffic Calming Circle
Existing 		One-Way/Two-Way Stop
Unknown 		4 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane
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
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.
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).
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).
College Park, MD
Prince George's Co.
United States 		Lafayette Ave. / Rivertech Ct.
(38.96737, -76.93276) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
32.0040 		Other (At-Grade)
Single-Lane 		2018 Year Completed estimated (2017-2018).
Glenarden, MD
Prince George's Co.
United States 		Campus Way N / McHugh Dr.
(38.92127, -76.84944) 		Other
Existing 		All-Way Yield
Unknown 		4 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane 		Inside shopping center. No splitter islands on northwest and southeast legs.
Glenarden, MD
Prince George's Co.
United States 		Campus Way N / Woodmore Center Dr.
(38.92263, -76.84787) 		Other
Existing 		All-Way Yield
Unknown 		4 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane 		Inside shopping center. No splitter islands on northwest and southeast legs.
Davidsonville, MD
Prince George's Co.
United States 		Town Center Blvd. / Emerald Way
(38.94399, -76.73410) 		Other
Existing 		Uncontrolled
Unknown 		4 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane 		Inside shopping center. No splitter islands on east and west legs.
Davidsonville, MD
Prince George's Co.
United States 		Health Center Dr. / (parking)
(38.94925, -76.74452) 		Other
Existing 		Unknown
Unknown 		4 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane
Chevy Chase, MD
Montgomery Co.
United States 		Rosemary Circle [Rosemary St. / Hillcrest Pl. / Stanford St.]
(38.97789, -77.08055) 		Other
Existing 		All-Way Stop
Unknown 		5 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane 		Parking along circulatory roadway.
Medfield, MD
Baltimore City
United States 		Weldon Ave. / Elsa Terrace
(39.33803, -76.63881) 		Other
Existing 		Unknown
Unknown 		4 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane 		Parking along circulatory roadway; pedestrian access to central island.
Laurel, MD
Prince George's Co.
United States 		Montrose Ave. / Harrison Dr.
(39.09979, -76.85955) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
24.3840 		Other (At-Grade)
Single-Lane 		2008 Year Completed estimated (2007-2008).
Crofton, MD
Anne Arundel Co.
United States 		Walden Dr. / Chapman Rd. / Windy Oak Ct.
(39.02364, -76.68366) 		Other
Existing 		Unknown
Unknown 		4 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Unknown
Travilah, MD
Montgomery Co.
United States 		Marwood Hill Dr. / Rivers Bend Ln.
(39.03022, -77.23432) 		Other
Existing 		Unknown
Unknown 		4 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane
Gaithersburg, MD
Montgomery Co.
United States 		Upshire Circle
(39.11353, -77.22397) 		Other
Existing 		Unknown
Unknown 		3 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Unknown
Columbia, MD
Howard Co.
United States 		Tamar Dr. / Old Montgomery Rd.
(39.20533, -76.82822) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
30.4800 		Other (At-Grade)
Single-Lane 		2022 https://www.howardcountymd.gov/News090122c
Silver Spring, MD
Montgomery Co.
United States 		Gist Ave. / Woodbury Dr.
(38.98948, -77.02294) 		Other
Existing 		All-Way Yield
Unknown 		4 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane 		No splitter islands.
Rockville, MD
Montgomery Co.
United States 		Henderson Circle
(39.08800, -77.16702) 		Other
Existing 		Unknown
Unknown 		4 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane 		Pedestrian access to central island.
North Potomac, MD
Montgomery Co.
United States 		Bald Cypress Dr. / Willow Tree Dr. / Cherrydale Dr.
(39.08158, -77.20120) 		Other
Existing 		Unknown
Unknown 		4 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane