Roundabouts Database

28859 Results

Search by location, intersection, and comments with the Quick Search below. You can search all other attributes by clicking Advanced Search. Sort results by clicking the headers of any column. Click the Intersection name for a details and aerial view. Search results pages can be bookmarked. Results can be exported to KML for viewing in Google Earth.


Search Advanced Search Export as KML
City, State
County
Country 		Intersection
(Lat, Lng) 		Type
Status 		Control Type / Other Control Type Approaches / Driveways / ICD (m) Functional Class /
LaneType 		Year Completed Comments
College Park, MD
Prince George's Co.
United States 		Campus Dr. / Regents Dr.
(38.98762, -76.94019) 		Other
Existing 		Other
Unknown 		4 Approaches
0 Driveways
58.4848 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		Mix of Yield and Stop signs (3 Yields; 1 Stop) at approaches. 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.
Frederick, MD
Frederick Co.
United States 		Fingerboard Rd. (MD 80) / I-270 SB Ramps
(39.32289, -77.35845) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
47.1198 		Freeway Ramps (Grade-Separated)
Multilane (2 Lane, unspecified) 		2009 ICD estimated from Google Maps linework.
Clarksburg, MD
Montgomery Co.
United States 		Little Seneca Pkwy. / Snowden Farm Pkwy.
(39.22989, -77.25280) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
28.6795 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		2012 Year Completed estimated (2011-2013). ICD estimated from Google Maps linework.
Clarksburg, MD
Montgomery Co.
United States 		Snowden Farm Pkwy. / Winding Woods Way
(39.22604, -77.24727) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
40.7086 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		2012 Year Completed estimated (2011-2013). ICD estimated from Google Maps linework.
Clarksburg, MD
Montgomery Co.
United States 		Little Seneca Pkwy. / Meadow Mist Rd.
(39.23154, -77.24309) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
30.5290 		Other (At-Grade)
Single-Lane 		2011 ICD estimated from Google Maps linework.
Aberdeen, MD
Harford Co.
United States 		Beards Hill Rd. / Middleton Rd. / Olympic Square
(39.52719, -76.17773) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
27.6364 		Other (At-Grade)
Single-Lane 		2019 https://www.baltimoresun.com/maryland/harford/aegis/cng-ag-aberdeen-roundabout-opens-0927-20190926-2itkrrn43jctnkw2ch6et7ky7m-story.html ICD estimated from Google Maps linework.
Aberdeen, MD
Harford Co.
United States 		Old Philadelphia Rd. (MD 7) / Perryman Rd. (MD 159)
(39.48791, -76.19155) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
37.7911 		Other (At-Grade)
Single-Lane 		2019 https://www.facebook.com/pg/Harford-County-Roundabouts-308793279204833/posts/ ICD estimated from Google Maps linework.
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.
Bethesda, MD
Montgomery Co.
United States 		Bradmoor Dr. / Roosevelt St.
(38.99427, -77.11925) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
21.3360 		Other (At-Grade)
Single-Lane 		2017 Year Completed estimated (2016-2018).
Clarksburg, MD
Montgomery Co.
United States 		Clarksburg Rd. (MD 121) / (outlet mall entrance)
(39.22844, -77.28869) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
49.9588 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		2015 ICD estimated from Google Maps linework.
Clarksburg, MD
Montgomery Co.
United States 		Clarksburg Rd. (MD 121) / Cabin Branch Ave.
(39.22689, -77.29051) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
46.2592 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		2015 ICD estimated from Google Maps linework.
Gaithersburg, MD
Montgomery Co.
United States 		Victory Farm Dr. / Girard St.
(39.14648, -77.18493) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
25.9348 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		2006 Year Completed estimated (2005-2006). ICD estimated from Google Maps linework.
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/
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
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.
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).
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
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
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).
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.
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
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).
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).
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.
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).
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
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.
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.
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).
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
North East, MD
Cecil Co.
United States 		MD 273 (Telegraph Rd.) / Blue Ball Rd.
(39.70019, -75.93167) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
33.9998 		Other (At-Grade)
Single-Lane 		2019 ICD estimated from Google Maps linework.
Centreville, MD
Queen Anne's Co.
United States 		MD 304 (Ruthsburg Rd.) / US 301 NB Ramps
(39.02731, -76.02541) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
37.1124 		Freeway Ramps (Grade-Separated)
Single-Lane 		2017 https://www.calvertbeacon.com/opening-new-us-301md-304-interchange/ ICD estimated from Google Maps linework.
Centreville, MD
Queen Anne's Co.
United States 		MD 304 (Ruthsburg Rd.) / US 301 SB Ramps / Tidewater Dr.
(39.02813, -76.02920) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
35.2563 		Freeway Ramps (Grade-Separated)
Single-Lane 		2017 https://www.calvertbeacon.com/opening-new-us-301md-304-interchange/ ICD estimated from Google Maps linework.
Konterra, MD
Prince George's Co.
United States 		Bentley Park Dr. / Parkgate Dr.
(39.09112, -76.91733) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
33.5280 		Other (At-Grade)
Single-Lane 		2015
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.
Hagerstown, MD
Washington Co.
United States 		Hagers Crossing Dr. / Bartow Dr. / Sedgwick Way
(39.65981, -77.75932) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
36.5760 		Other (At-Grade)
Single-Lane 		2003 Year Completed estimated (1999-2005).
Robinwood, MD
Washington Co.
United States 		Yale Dr. / Medical Campus Rd. / Caring Pathway Ln.
(39.62594, -77.68707) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
36.5760 		Other (At-Grade)
Single-Lane 		2016 Right-turn bypass lane on southwest leg.
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
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 		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.
Bel Air North, MD
Harford Co.
United States 		Red Pump Rd. / Yankee Doodle Dr.
(39.54551, -76.37994) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
36.5760 		Other (At-Grade)
Single-Lane 		2010
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).
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
Chester, MD
Queen Anne's Co.
United States 		Castle Marina Rd. / Bayberry Dr.
(38.98086, -76.28905) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
48.7680 		Other (At-Grade)
Single-Lane 		2019 Year Completed estimated (2018-2019).
Severna Park, MD
Anne Arundel Co.
United States 		East West Blvd. / Jumpers Hole Rd. / Adler Ct.
(39.10765, -76.58306) 		Roundabout
Existing 		All-Way Yield
None 		5 Approaches
0 Driveways
65.5320 		Other (At-Grade)
Single-Lane 		1998 Elliptical shape. ICD 225 ft x 200 ft. Year Completed estimated (1994-2002).
Millersville, MD
Anne Arundel Co.
United States 		Brightview Dr. / Galiot Dr. / Tremont Dr.
(39.11196, -76.62028) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
30.4800 		Other (At-Grade)
Single-Lane 		2008
Hanover, MD
Anne Arundel Co.
United States 		Parkside Blvd. / Fredericksburg Rd. / Cornfield Ave.
(39.13140, -76.75125) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
36.5760 		Other (At-Grade)
Single-Lane 		2015
Gaithersburg, MD
Montgomery Co.
United States 		Washingtonian Blvd. / Rio Blvd.
(39.11678, -77.20122) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
36.5760 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		1998 Year Completed estimated (1993-2002).
Gaithersburg, MD
Montgomery Co.
United States 		Washingtonian Blvd. / Washington Blvd.
(39.11773, -77.20314) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
36.5760 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		1998 Year Completed estimated (1993-2002).
Severn, MD
Anne Arundel Co.
United States 		Milestone Pkwy. / (unknown)
(39.14341, -76.75076) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
45.7200 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		2012 Year Completed estimated (2011-2014).
Severn, MD
Anne Arundel Co.
United States 		Milestone Pkwy. / Clubhouse Dr.
(39.14600, -76.74775) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
45.7200 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		2012 Year Completed estimated (2011-2014).
Severn, MD
Anne Arundel Co.
United States 		Milestone Pkwy. / Split Creek Ln. / (parking)
(39.15042, -76.74668) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
45.7200 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		2007
Darnestown, MD
Montgomery Co.
United States 		Schaeffer Rd. / Germantown Park Dr. / Central Park Cir.
(39.15003, -77.30152) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
48.7680 		Other (At-Grade)
Single-Lane 		2004 Right-turn-only lane on northeast leg. Year Completed estimated (2002-2005).
Jessup, MD
Anne Arundel Co.
United States 		Montevideo Rd. / Forest Ave. / Wigley Ave.
(39.15966, -76.75916) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
33.5280 		Other (At-Grade)
Single-Lane 		2007 Year Completed estimated (2006-2007).