Roundabouts Database

29616 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 		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 		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
Olney, MD
Montgomery Co.
United States 		Fox Valley Dr. / Hillcroft Dr.
(39.12441, -77.07962) 		Other
Existing 		Unknown
Unknown 		4 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Unknown 		No splitter islands.
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.
Aiken's Tavern Historic District, MD
Cecil Co.
United States 		Pebble Beach Dr. / Spyglass Dr.
(39.61664, -75.79074) 		Other
Existing 		Unknown
Unknown 		3 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Unknown 		Parking in circulatory roadway.
Baltimore, MD
Baltimore City
United States 		Washington Pl. / Mount Vernon Pl.
(39.29756, -76.61568) 		Signalized Roundabout/Circle
Existing 		Signal
Unknown 		4 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane
Centreville, MD
Queen Anne's Co.
United States 		Symphony Way / Orchestra Pl.
(39.02501, -76.06785) 		Other
Existing 		Unknown
Unknown 		4 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane
Frostburg, MD
Allegany Co.
United States 		Heartwood Dr. / Moonlight Dr.
(39.63654, -78.92720) 		Traffic Calming Circle
Existing 		Unknown
Unknown 		4 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Unknown
Annapolis, MD
Anne Arundel Co.
United States 		Bywater Rd.
(38.96731, -76.52788) 		Other
Existing 		Unknown
Unknown 		2 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane
Ellicott City, MD
Howard Co.
United States 		Coventry Court Dr.
(39.27862, -76.87340) 		Other
Existing 		Unknown
Unknown 		2 Approaches
2 Driveways
0.0000 		Other (At-Grade)
Unknown
Ellicott City, MD
Howard Co.
United States 		Lancelot Cross / Butterfruit Way / Argent Path / Stardust Ln.
(39.28522, -76.90384) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
57.9120 		Other (At-Grade)
Single-Lane 		1998 Year Completed estimated (1993-2002).
Sandy Spring, MD
Montgomery Co.
United States 		Alexander Manor Dr. / Red Tail Ct. / Halex Hill Ct.
(39.13149, -77.01778) 		Other
Existing 		Unknown
Unknown 		4 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane 		No splitter islands.
Sandy Spring, MD
Montgomery Co.
United States 		Friends House Rd. / Quaker Ln. / (parking)
(39.14071, -77.03036) 		Other
Existing 		Unknown
Unknown 		4 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane 		No splitter islands.
Germantown, MD
Montgomery Co.
United States 		Observation Dr. / Goldenrod Ln.
(39.18419, -77.24566) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
45.7200 		Other (At-Grade)
Multilane (2 Lane, 2x2 max) 		2013 Year Completed estimated (2012-2014).
Germantown, MD
Montgomery Co.
United States 		Crystal Rock Dr. / Century Blvd.
(39.20326, -77.27356) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
48.7680 		Other (At-Grade)
Multilane (2 Lane, 2x2 max) 		2015 Striping added 2019-2021. Inconsistent lane use markings between entry and circulatory roadway.
Clarksburg, MD
Montgomery Co.
United States 		Little Seneca Pkwy. / Cabin Branch Ave.
(39.21654, -77.28310) 		Roundabout
Existing 		All-Way Yield
Unknown 		4 Approaches
0 Driveways
45.7200 		Other (At-Grade)
Multilane (2 Lane, 2x2 max) 		2016 Year Completed estimated (2016-2017). Striping added 2019-2021.
Clarksburg, MD
Montgomery Co.
United States 		Broadway Ave. / Little Seneca Pkwy.
(39.21646, -77.28540) 		Roundabout
Existing 		All-Way Yield
Unknown 		3 Approaches
0 Driveways
45.7200 		Other (At-Grade)
Multilane (2 Lane, 2x2 max) 		2016 Year Completed estimated (2015-2017). Striping added 2019-2021.
Clarksburg, MD
Montgomery Co.
United States 		Clarksburg Rd. / W Old Baltimore Rd.
(39.21396, -77.29731) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
42.6720 		Other (At-Grade)
Single-Lane 		2019 Year Completed estimated (2019-2020).
Clarksburg, MD
Montgomery Co.
United States 		Cabin Branch Ave. / Skimmer St.
(39.22020, -77.28435) 		Roundabout
Existing 		All-Way Yield
Unknown 		4 Approaches
0 Driveways
45.7200 		Other (At-Grade)
Multilane (2 Lane, 2x2 max) 		2016 Year Completed estimated (2015-2017). Striping added 2019-2021.
Odenton, MD
Anne Arundel Co.
United States 		Two Rivers Blvd. / Dragon Fly Way / Broad Wing Dr.
(39.01870, -76.71985) 		Unknown
Existing 		Unknown
Unknown 		4 Approaches
0 Driveways
30.4800 		Other (At-Grade)
Single-Lane 		2015
Gambrills, MD
Anne Arundel Co.
United States 		Grand Meadow Dr. / Ridings Way
(39.00615, -76.66270) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
48.4632 		Other (At-Grade)
Single-Lane 		2018 Year Completed estimated (2017-2018).
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.
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.
Dunkirk, MD
Calvert Co.
United States 		Ward Rd. / (entrance to park)
(38.72220, -76.64529) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
36.5760 		Other (At-Grade)
Single-Lane 		2021 https://southernmarylandchronicle.com/2021/07/02/section-of-ward-road-in-calvert-to-close-for-construction/
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.
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
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
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.
Owings Mills, MD
Baltimore Co.
United States 		Foxcreek Ct.
(39.46537, -76.75334) 		Other
Existing 		Unknown
Unknown 		3 Approaches
1 Driveways
0.0000 		Other (At-Grade)
Unknown
Summerfield, MD
Prince George's Co.
United States 		Ridgefield Blvd. / Chatsfield Way / Valley Trail Ln.
(38.89834, -76.86172) 		Other
Existing 		Unknown
Unknown 		3 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Multilane (2 Lane, unspecified)
Capitol Heights, MD
Prince George's Co.
United States 		Hampton Park Blvd.
(38.87175, -76.85022) 		Roundabout
Existing 		All-Way Yield
Unknown 		2 Approaches
0 Driveways
57.9120 		Other (At-Grade)
Multilane (2 Lane, 2x2 max) 		2007 Yield signs but no entrance line or yield lines.
Capitol Heights, MD
Prince George's Co.
United States 		Ritchie Station Ct. / (mall circulation road)
(38.86528, -76.84986) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
1 Driveways
41.1480 		Other (At-Grade)
Single-Lane 		2011 Year Completed estimated (2010-2011).
Forestville, MD
Prince George's Co.
United States 		Donnell Pl.
(38.84109, -76.88405) 		Other
Existing 		Unknown
Unknown 		4 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane
Saint Charles, MD
Charles Co.
United States 		Devongate St. / Malvern St. / Promenade Pl.
(38.61057, -76.93790) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
28.9560 		Other (At-Grade)
Single-Lane 		2009 Crosswalks adjacent to circulatory roadway. Year Completed estimated (2008-2009).
Annapolis, MD
Anne Arundel Co.
United States 		State Circle
(38.97890, -76.49063) 		Other
Existing 		Unknown
Unknown 		6 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane 		Maryland State House in central island.
Londontowne, MD
Anne Arundel Co.
United States 		Millhaven Dr. / Two Rivers Dr. / Tilden Way
(38.93715, -76.56159) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
33.5280 		Other (At-Grade)
Single-Lane 		2006 Converted from open intersection. Year Completed estimated (2005-2006).
Londontowne, MD
Anne Arundel Co.
United States 		Southdown Rd. / Landing Rd. / Decker Pl.
(38.93983, -76.57211) 		Other
Existing 		Unknown
Unknown 		4 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane
Davidsonville Historic District, MD
Prince George's Co.
United States 		Oak Grove Rd. / (parking)
(38.87858, -76.77717) 		Other
Existing 		Unknown
Unknown 		4 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Multilane (2 Lane, 2x1 max)
Upper Marlboro, MD
Prince George's Co.
United States 		Thomas Sim Lee Terrace / Mary Digges Pl.
(38.81663, -76.81748) 		Other
Existing 		Unknown
Unknown 		4 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane
Saint Charles, MD
Charles Co.
United States 		Radford St. / Montpelier Dr.
(38.64135, -76.97106) 		Other
Existing 		Unknown
Unknown 		3 Approaches
4 Driveways
0.0000 		Other (At-Grade)
Single-Lane 		Pedestrian access to central island.
Saint Charles, MD
Charles Co.
United States 		Ethridge Dr. / Nobility Ct.
(38.62769, -76.96461) 		Other
Existing 		Unknown
Unknown 		4 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane 		No splitter island on north and east legs.
Potomac Heights, MD
Charles Co.
United States 		Cedar Ln. / Glymont Rd. / Greenwood Pl.
(38.60764, -77.14063) 		Other
Existing 		Unknown
Unknown 		4 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Unknown
Salisbury, MD
Wicomico Co.
United States 		Legacy Way / Sawback Ln.
(38.36523, -75.62309) 		Other
Existing 		Unknown
Unknown 		3 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Unknown
Upper Marlboro, MD
Prince George's Co.
United States 		Governors Park Ln. / Chancelsors Dr.
(38.83526, -76.73311) 		Other
Existing 		Unknown
Unknown 		3 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Unknown
Upper Marlboro, MD
Prince George's Co.
United States 		Presidential Golf Dr. / Pentland Hills Dr.
(38.84025, -76.73519) 		Other
Existing 		Unknown
Unknown 		3 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Unknown
Odenton, MD
Anne Arundel Co.
United States 		Sand Lens Dr. / Water Strider Way
(39.02435, -76.72793) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
36.5760 		Other (At-Grade)
Single-Lane 		2020
Odenton, MD
Anne Arundel Co.
United States 		Meyers Station Rd. / Conway Rd.
(39.02871, -76.71317) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
47.2440 		Other (At-Grade)
Single-Lane 		2016 Year Completed estimated (2015-2017).
Gambrills, MD
Anne Arundel Co.
United States 		Nancarles Dr. / Kirchner Ln.
(38.98934, -76.68111) 		Other
Existing 		Unknown
Unknown 		3 Approaches
2 Driveways
0.0000 		Other (At-Grade)
Single-Lane
Odenton, MD
Anne Arundel Co.
United States 		Town Center Blvd. / Odenton Landing Way / Odenton Ave.
(39.09810, -76.70709) 		Roundabout
Existing 		All-Way Yield
Unknown 		4 Approaches
0 Driveways
54.8640 		Other (At-Grade)
Multilane (2 Lane, 2x1 max) 		2018 Year Completed estimated (2017-2018).
Glen Burnie, MD
Anne Arundel Co.
United States 		Hancock Ln. / Mayflower Cir.
(39.14357, -76.62097) 		Other
Existing 		Unknown
Unknown 		3 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Unknown
Pasadena, MD
Anne Arundel Co.
United States 		Ashberry Ln. / Dewberry Ln. / Dewberry Cir.
(39.13099, -76.59326) 		Other
Existing 		Unknown
Unknown 		4 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Unknown
Pasadena, MD
Anne Arundel Co.
United States 		Pinehurst Harbour Way
(39.12192, -76.43538) 		Other
Existing 		Unknown
Unknown 		2 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Unknown
Salisbury, MD
Wicomico Co.
United States 		Oakwood Dr. / Woodbrooke Dr.
(38.36236, -75.55193) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
1 Driveways
35.0520 		Other (At-Grade)
Single-Lane 		2008 Right-turn arrow on all entries. Year Completed estimated (2007-2009).
Oakland, MD
Garrett Co.
United States 		Heron Circle
(39.48570, -79.32376) 		Other
Existing 		Unknown
Unknown 		3 Approaches
1 Driveways
0.0000 		Other (At-Grade)
Unknown
Derwood, MD
Montgomery Co.
United States 		Achille Ln. / Heartwood Dr.
(39.12925, -77.11543) 		Other
Existing 		Unknown
Unknown 		3 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane 		No splitter islands.
Derwood, MD
Montgomery Co.
United States 		Heartwood Dr.
(39.13239, -77.11434) 		Other
Existing 		Unknown
Unknown 		2 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Unknown
Derwood, MD
Montgomery Co.
United States 		Coppelia Dr. / Toboggan Ln.
(39.13566, -77.11938) 		Other
Existing 		Unknown
Unknown 		4 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane 		No splitter islands.
Olney, MD
Montgomery Co.
United States 		Martins Dairy Cir. / Old Baltimore Rd.
(39.13345, -77.07382) 		Other
Existing 		All-Way Yield
Unknown 		3 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane 		Painted splitter islands.
Wheaton, MD
Montgomery Co.
United States 		Park Vista Dr. / Wintergate Dr. / Longmeade Crossing Dr.
(39.10755, -77.05340) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
30.4800 		Other (At-Grade)
Single-Lane 		2020 Painted splitter islands added 2020.
Ashton, MD
Montgomery Co.
United States 		Harbour Town Dr. / Grand Cypress Ct.
(39.13205, -77.00407) 		Other
Existing 		Unknown
Unknown 		3 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane 		No splitter islands.
Marriottsville, MD
Howard Co.
United States 		Sand Hill Rd. / Sand Hill Manor Dr. / Mount View Rd.
(39.31018, -76.93043) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
28.9560 		Other (At-Grade)
Single-Lane 		1998 Year Completed estimated (1993-2002).
Ijamsville, MD
Frederick Co.
United States 		Whiskey Rd. / Whiskey Ct.
(39.36078, -77.30012) 		Other
Existing 		Unknown
Unknown 		3 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Unknown
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
Ballenger Creek, MD
Frederick Co.
United States 		Newton Dr. / Hiteshow Dr. / Cheatham Way
(39.36597, -77.44595) 		Other
Existing 		Unknown
Unknown 		5 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Unknown
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).
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
Boonsboro, MD
Washington Co.
United States 		Monument Dr. / West Wing Way
(39.50248, -77.65503) 		Other
Existing 		Unknown
Unknown 		3 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane
Boonsboro, MD
Washington Co.
United States 		Monument Dr. / Midlothian Way
(39.50117, -77.65254) 		Other
Existing 		Unknown
Unknown 		3 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane
Boonsboro, MD
Washington Co.
United States 		Monument Dr. / East Wing Way
(39.50047, -77.65002) 		Other
Existing 		Unknown
Unknown 		3 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane
Urbana, MD
Frederick Co.
United States 		Stone Barn Dr. / Longleaf Dr.
(39.33278, -77.36713) 		Unknown
Existing 		Unknown
Unknown 		4 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Unknown
Gaithersburg, MD
Montgomery Co.
United States 		Perry Pkwy. / (parking)
(39.14899, -77.21048) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
47.2440 		Other (At-Grade)
Multilane (2 Lane, 2x1 max) 		2004 Year Completed estimated (2002-2005).
Redland, MD
Montgomery Co.
United States 		Columbus Ave. / Gramercy Blvd.
(39.12362, -77.16494) 		Other
Existing 		All-Way Stop
Unknown 		3 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane
King Farm, MD
Montgomery Co.
United States 		Pleasant Circle
(39.11623, -77.17518) 		Other
Existing 		Unknown
Unknown 		4 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Unknown 		Pedestrian access to central island.
Potomac, MD
Montgomery Co.
United States 		10600 Morning Field Dr. / Sunny Brooke Ln. / Sunny Brooke Pl.
(39.07423, -77.21561) 		Other
Existing 		Unknown
Unknown 		3 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Unknown
Potomac, MD
Montgomery Co.
United States 		Broad Green Dr. / Clagett Farm Dr.
(39.04566, -77.19669) 		Other
Existing 		All-Way Yield
Unknown 		4 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane
Potomac, MD
Montgomery Co.
United States 		Larkmeade Ln. / Bells Ridge Dr.
(39.03483, -77.16775) 		Other
Existing 		Unknown
Unknown 		4 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Unknown
Olney, MD
Montgomery Co.
United States 		Wickham Rd. / Broom Dr.
(39.15708, -77.09362) 		Other
Existing 		Unknown
Unknown 		3 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane 		No splitter islands.
Olney, MD
Montgomery Co.
United States 		Martins Dairy Cir. / Gooseneck Terrace
(39.13176, -77.07439) 		Other
Existing 		Unknown
Unknown 		3 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Unknown
Germantown, MD
Montgomery Co.
United States 		Milestone Manor Ln. / Manor View Cir. / Milestone Manor Ct.
(39.20854, -77.24868) 		Other
Existing 		Unknown
Unknown 		4 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Unknown
Germantown, MD
Montgomery Co.
United States 		Milestone Manor Ln. / Stardrift Dr.
(39.20560, -77.25039) 		Other
Existing 		Unknown
Unknown 		4 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Unknown
Germantown, MD
Montgomery Co.
United States 		Milestone Manor Ln. / Emerald Dr.
(39.20479, -77.25262) 		Other
Existing 		Unknown
Unknown 		4 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Unknown
Germantown, MD
Montgomery Co.
United States 		Milestone Manor Ln. / Royal Crown Dr.
(39.20518, -77.25877) 		Other
Existing 		Unknown
Unknown 		4 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Unknown
Germantown, MD
Montgomery Co.
United States 		Pickering Dr. / Pickering Pl.
(39.18854, -77.27173) 		Other
Existing 		Unknown
Unknown 		3 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Unknown
Germantown, MD
Montgomery Co.
United States 		Club Hill Dr. / Thackery Pl.
(39.18531, -77.27012) 		Other
Existing 		Unknown
Unknown 		3 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Unknown
Germantown, MD
Montgomery Co.
United States 		Kildale Hills Terrace / Galway Bay Cir.
(39.17826, -77.27643) 		Other
Existing 		Unknown
Unknown 		4 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Unknown
Camp Springs, MD
Prince George's Co.
United States 		Telfair Blvd. / Midtown Square
(38.82920, -76.90940) 		Other
Existing 		Uncontrolled
Unknown 		3 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane
Park Lane, MD
Baltimore City
United States 		Pall Mall Rd. / Wylie Ave. / Edgecombe Cir. S
(39.34212, -76.66482) 		Other
Existing 		All-Way Yield
Unknown 		4 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane 		Parking along circulatory roadway.
Savage, MD
Howard Co.
United States 		Washington St. / Foundry St.
(39.13656, -76.82513) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
18.2880 		Other (At-Grade)
Single-lane w/ Traversable Central Island 		2021 Painted splitter islands. Pedestrian crossing on west leg adjacent to circulatory roadway. https://www.howardcountymd.gov/News120121
Glenelg, MD
Howard Co.
United States 		Triadelphia Rd. / Ten Oaks Rd.
(39.26399, -76.98621) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
32.0040 		Other (At-Grade)
Single-Lane 		2000 Year Completed estimated (1992-2002).
College Park, MD
Prince George's Co.
United States 		Dupont Circle
(38.95971, -76.93792) 		Other
Existing 		Other
Unknown 		4 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane 		Mix of stop and yield control. No splitter islands.
Davidsonville, MD
Prince George's Co.
United States 		Marleigh Dr. / Huntchase Dr.
(38.95209, -76.79398) 		Other
Existing 		Unknown
Unknown 		4 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Unknown 		No splitter islands.
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).
Catonsville, MD
Baltimore Co.
United States 		Edmundson Avenue / Old Frederick Road
(39.27533, -76.76612) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
20.3400 		Other (At-Grade)
Single-Lane 		2010 ICD estimated from Google Maps linework.
Ellicott City, MD
Howard Co.
United States 		Rogers Ave / Old Frederick Road
(39.29904, -76.81308) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
1 Driveways
26.8026 		Other (At-Grade)
Single-Lane 		2004 ICD estimated from Google Maps linework. Old Frederick Road is MD 985A but roundabout may be locally maintained and not state maintained
Brunswick, MD
Frederick Co.
United States 		MD 17 / Rosemont Drive / Dutchmans Creek
(39.33480, -77.63671) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
43.4167 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		2010 ICD estimated from Google Maps linework.
Brunswick, MD
Frederick Co.
United States 		MD 17 / Volunteer Drive
(39.33261, -77.63365) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
36.9516 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		2010 ICD estimated from Google Maps linework.
Brunswick, MD
Frederick Co.
United States 		Potomac View Parkway / Dutchmans Creek
(39.33265, -77.63770) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
32.3326 		Other (At-Grade)
Single-Lane 		2010 ICD estimated from Google Maps linework.
Brunswick, MD
Frederick Co.
United States 		Potomac View Parkway / Volunteer Drive
(39.33145, -77.63483) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
34.1808 		Other (At-Grade)
Single-Lane 		2010 ICD estimated from Google Maps linework.
Baltimore, MD
Baltimore City Co.
United States 		Old Frederick Road / Maple Wood Road
(39.29094, -76.69283) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
25.8815 		Other (At-Grade)
Single-Lane 		2013 4th leg not built yet - for future development ICD estimated from Google Maps linework.