Roundabouts Database

29679 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
Gambrills, MD
Anne Arundel Co.
United States 		2498 Mt Tabor Rd
(38.99855, -76.66414) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
22.2765 		Other (At-Grade)
Single-Lane 		2007 ICD estimated from Google Maps linework.
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.
Williamsburg, VA
Williamsburg City Co.
United States 		Battery Blvd. / Commonwealth Ave.
(37.25257, -76.66771) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
47.2440 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		2012 Through arrows only on northeast entry even though lanes marked within roundabout as LT, LT-TH. Entry appears to have been modified by removing left-turn pavement marking arrows on entry and replacing with through arrows. No lane use signs. Year Completed estimated (2011-2014). 21442
Williamsburg, VA
Williamsburg City
United States 		Battery Blvd. / Green Hill St.
(37.25081, -76.67254) 		Other
Existing 		Unknown
Unknown 		3 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane 		Parking along circulatory roadway; pedestrian access to central island.
Williamsburg, VA
Williamsburg City
United States 		Northridge St. / Green Hill St.
(37.25266, -76.67321) 		Unknown
Existing 		Unknown
Unknown 		3 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane
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.
Williamsburg, VA
Williamsburg City Co.
United States 		Battery Blvd. / Redoubt Rd.
(37.25003, -76.67504) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
39.6240 		Other (At-Grade)
Single-Lane 		2013 Year Completed estimated (2011-2014) as three-leg roundabout.
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
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
Odenton, MD
Anne Arundel Co.
United States 		MD 175 / MD 677 / Higgins Dr.
(39.07831, -76.68481) 		Roundabout
Existing 		All-Way Yield
Unknown 		5 Approaches
0 Driveways
57.9120 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		2004 Reduced from two lanes to one lane in 2010. 21442
Pikesville, MD
Baltimore Co.
United States 		Travertine Dr.
(39.38721, -76.68990) 		Other
Existing 		Unknown
Unknown 		4 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Unknown 		Parking along circulatory roadway; pedestrian access to central island.
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.
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 		Ridgemont Rd.
(39.45142, -76.69629) 		Other
Existing 		Unknown
Unknown 		2 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Unknown
Hanover, MD
Anne Arundel Co.
United States 		Ridge Rd. / Corporate Center Dr.
(39.19204, -76.70216) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
31.4719 		Other (At-Grade)
Single-Lane 		2004 ICD estimated from Google Maps linework.
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
Bowie, MD
Prince George's Co.
United States 		Melford Blvd. / Curie Dr.
(38.95842, -76.70683) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
78.9406 		Other (At-Grade)
Single-Lane 		2008 ICD estimated from Google Maps linework.
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).
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.
Davidsonville Historic District, MD
Prince George's Co.
United States 		Science Dr. / Curie Dr.
(38.96399, -76.70897) 		Other
Existing 		Unknown
Unknown 		3 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane 		No splitter islands.
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
Elkridge, MD
Howard Co.
United States 		Toomey Ln. / Fairlee Rd.
(39.21083, -76.71160) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
2 Driveways
27.4320 		Other (At-Grade)
Single-Lane 		2002
Elkridge, MD
Howard Co.
United States 		Toomey Ln. / Clements Ln.
(39.20950, -76.71291) 		Other
Existing 		Unknown
Unknown 		2 Approaches
4 Driveways
0.0000 		Other (At-Grade)
Unknown 		No splitter islands.
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).
Bowie, MD
Prince George's Co.
United States 		Melford Blvd. / Science Dr.
(38.96089, -76.71320) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
43.6480 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		2008 Concentric striping in circulatory roadway. ICD estimated from Google Maps linework.
Catonsville, MD
Baltimore Co.
United States 		Research Park Dr.
(39.24868, -76.71406) 		Other
Existing 		Uncontrolled
Unknown 		2 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane
Davidsonville Historic District, MD
Prince George's Co.
United States 		Science Dr. / (parking)
(38.96068, -76.71428) 		Other
Existing 		Unknown
Unknown 		4 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane 		No splitter islands.
Catonsville, MD
Baltimore Co.
United States 		Hilltop Cir. / UMBC Blvd.
(39.25178, -76.71442) 		Rotary
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
60.1156 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		2015 Lane changes needed for some through movements. ICD estimated from Google Maps linework.
Catonsville, MD
Baltimore Co.
United States 		UMBC Blvd. / Research Park Dr.
(39.24874, -76.71580) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
44.3950 		Other (At-Grade)
Single-Lane 		2015 Elliptical shape. ICD estimated from Google Maps linework.
Seven Valleys, PA
York Co.
United States 		Grand Lake Dr. / Grand Oak Way
(39.86507, -76.71601) 		Other
Existing 		Unknown
Unknown 		3 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Unknown
Seven Valleys, PA
York Co.
United States 		Countryside Rd. / Morningside Way
(39.86287, -76.71666) 		Other
Existing 		Unknown
Unknown 		3 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Unknown
Harrisburg, PA
Dauphin Co.
United States 		Baumgardner Dr. / Hanoverdale Dr. / Brynfield Way / Quiggly Cir.
(40.32675, -76.71677) 		Other
Existing 		Unknown
Unknown 		4 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane 		No splitter islands.
Catonsville, MD
Baltimore Co.
United States 		Hidden Bludd Cir. / Jacks Ct.
(39.25966, -76.71926) 		Other
Existing 		Unknown
Unknown 		3 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane
Odenton, MD
Anne Arundel Co.
United States 		Piney Orchard Pkwy. / Roaming Ridge Way / Village Center Dr.
(39.06702, -76.71951) 		Roundabout
Existing 		All-Way Yield
Unknown 		4 Approaches
0 Driveways
50.2920 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		2003 Year Completed estimated (2002-2004).
Catonsville, MD
Baltimore Co.
United States 		MD 372 / Hilltop Rd. / Entrance to UMBC
(39.25733, -76.71964) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
35.1417 		Other (At-Grade)
Single-Lane 		1998 Functional Class: Collector ICD estimated from Google Maps linework.
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
Linglestown, PA
Dauphin Co.
United States 		Aynlee Way / Willage Way
(40.32784, -76.72308) 		Other
Existing 		Unknown
Unknown 		3 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane 		Parking along circulatory roadway.
Elkridge, MD
Howard Co.
United States 		Elkridge Crossing Way / Doctor Patel Dr.
(39.21091, -76.72512) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
31.4634 		Other (At-Grade)
Single-Lane 		2007 East leg stubbed for future. ICD estimated from Google Maps linework.
Hanover, MD
Anne Arundel Co.
United States 		Watts Ave. / Clark Rd.
(39.15138, -76.72638) 		Roundabout
Existing 		All-Way Yield
None 		2 Approaches
0 Driveways
25.9330 		Other (At-Grade)
Single-Lane 		2008 ICD estimated from Google Maps linework.
Clements, MD
St. Mary's Co.
United States 		MD 242 (Colton Point Rd.) / MD 234 (Budds Creek Rd.)
(38.32656, -76.72755) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
31.8559 		Other (At-Grade)
Single-Lane 		2017 https://www.somdnews.com/enterprise/spotlight/clements-roundabout-intersection-open-with-improvements-for-tractors/article_05f0355a-245a-5018-b4e6-79b0c5866ed8.html ICD estimated from Google Maps linework.
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
Upper Marlboro, MD
Prince George's Co.
United States 		Moores Plains Blvd. / Buxton Pl.
(38.85826, -76.73014) 		Other
Existing 		Unknown
Unknown 		3 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane
Upper Marlboro, MD
Prince George's Co.
United States 		Moores Plains Blvd. / Bishopstone Terrace
(38.85575, -76.73096) 		Other
Existing 		Unknown
Unknown 		3 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane
Reisterstown, MD
Baltimore Co.
United States 		Long Ridge Rd. / Barto Ln.
(39.47055, -76.73195) 		Other
Existing 		Unknown
Unknown 		4 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane 		Pedestrian access to central island.
Upper Marlboro, MD
Prince George's Co.
United States 		Moores Plains Blvd. / Copper Beach Dr.
(38.85458, -76.73266) 		Other
Existing 		Unknown
Unknown 		4 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane
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
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.
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
Upper Marlboro, MD
Prince George's Co.
United States 		Moores Plains Blvd. / Humberside Way
(38.85198, -76.73522) 		Other
Existing 		Unknown
Unknown 		4 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane
Upper Marlboro, MD
Prince George's Co.
United States 		Beech Tree Pkwy. / Moores Plains Blvd. / (parking)
(38.84933, -76.73622) 		Other
Existing 		Unknown
Unknown 		4 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane
Upper Marlboro, MD
Prince George's Co.
United States 		Symondsbury Way / Galeshead Dr.
(38.85587, -76.73628) 		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 		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.
Upper Marlboro, MD
Prince George's Co.
United States 		George Hilleary Terrace
(38.84772, -76.74269) 		Other
Existing 		Unknown
Unknown 		2 Approaches
2 Driveways
0.0000 		Other (At-Grade)
Single-Lane
Upper Marlboro, MD
Prince George's Co.
United States 		Nancy Gibbons Terrace
(38.85592, -76.74356) 		Other
Existing 		Unknown
Unknown 		2 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane
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
Hanover, MD
Anne Arundel Co.
United States 		Arundel Mills Blvd. / MD 295 NB Ramps
(39.15573, -76.74459) 		Roundabout
Removed 		All-Way Yield
None 		3 Approaches
0 Driveways
26.8575 		Freeway Ramps (Grade-Separated)
Multilane (2 Lane, unspecified) 		2002 ICD estimated from Google Maps linework. Replaced with DDI
Hanover, MD
Anne Arundel Co.
United States 		Arundel Mills Blvd. / MD 295 SB Ramps
(39.15677, -76.74617) 		Roundabout
Removed 		All-Way Yield
None 		2 Approaches
0 Driveways
66.6796 		Freeway Ramps (Grade-Separated)
Multilane (2 Lane, unspecified) 		2002 ICD estimated from Google Maps linework. Replaced with DDI.
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
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).
Harrisburg, PA
Dauphin Co.
United States 		Country View Dr.
(40.35270, -76.74997) 		Other
Existing 		Unknown
Unknown 		2 Approaches
6 Driveways
0.0000 		Other (At-Grade)
Single-Lane 		No splitter islands.
Windsor Mill, MD
Baltimore Co.
United States 		Lord Baltimore Dr. / Wildlife Dr.
(39.31993, -76.75019) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
14.7833 		Other (At-Grade)
Single-Lane 		1998 Year Completed estimated (1993-2002). ICD estimated from Google Maps linework.
Lower Paxton, PA
Dauphin Co.
United States 		Royal Terrace Dr. / View Crest Dr. / Rock Ridge Ave.
(40.35463, -76.75035) 		Other
Existing 		Unknown
Unknown 		4 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane 		No splitter islands on northwest, northeast, or southeast legs.
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).
Williamsburg, VA
James City Co.
United States 		Longhill Rd. / Williamsburg Plantation Dr.
(37.30395, -76.75083) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
45.7200 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		2021
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
Windsor Mill, MD
Baltimore Co.
United States 		Lord Baltimore Dr. / Glen Spring Rd. / Kettle Ct.
(39.31750, -76.75152) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
17.5558 		Other (At-Grade)
Single-Lane 		1998 Year Completed estimated (1993-2002). ICD estimated from Google Maps linework.
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
Linglestown, PA
Dauphin Co.
United States 		Buckley Dr. / Bradford Blvd.
(40.32760, -76.75391) 		Other
Existing 		Unknown
Unknown 		4 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane 		No splitter islands.
Jessup, MD
Anne Arundel Co.
United States 		MD 198 (Laurel Fort Meade Rd.) / MD 32 WB Ramps
(39.09178, -76.75688) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
53.3400 		Freeway Ramps (Grade-Separated)
Multilane (2 Lane, unspecified) 		2002 Lanes reduced in 2010. 21442
Jessup, MD
Anne Arundel Co.
United States 		MD 198 (Laurel Fort Meade Rd.) / MD 32 EB Ramps
(39.08997, -76.75736) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
53.3400 		Freeway Ramps (Grade-Separated)
Multilane (2 Lane, unspecified) 		2002 Lanes reduced in 2010. 21442
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).
Jessup, MD
Anne Arundel Co.
United States 		National Business Pkwy. / Brock Bridge Rd.
(39.14025, -76.76395) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
44.4636 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		2013 ICD estimated from Google Maps linework.
Reisterstown, MD
Baltimore Co.
United States 		Worthington Ave. / Greenspring Ave. / Tufton Ave.
(39.47691, -76.76508) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
34.1095 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		2017 ICD estimated from Google Maps linework.
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.
Jessup, MD
Howard Co.
United States 		Canine Rd. / MD 32 EB Ramps
(39.10101, -76.76953) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
38.0005 		Freeway Ramps (Grade-Separated)
Single-Lane 		2001 ICD estimated from Google Maps linework.
Williamsburg, VA
James City Co.
United States 		Colonial Heritage Blvd. / Harrington Commons / Chapel Xing
(37.34606, -76.77094) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
74.0590 		Other (At-Grade)
Single-Lane 		2005 ICD estimated from Google Maps linework.
Odessa, ON
Lennox and Addington
Canada 		CR 2 / CR 4
(44.26179, -76.77489) 		Roundabout
Existing 		All-Way Yield
Unknown 		4 Approaches
0 Driveways
38.4898 		Other (At-Grade)
Single-Lane 		2009 ICD estimated from Google Maps linework.
Davidsonville Historic District, MD
Prince George's Co.
United States 		Cameron Grove Blvd. / New Acadia Ln.
(38.89933, -76.77575) 		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)
Willamsburg, VA
James City Co.
United States 		Saunders Bridge / S Square / River Moor / Poggio Field
(37.25970, -76.77789) 		Other
Existing 		Unknown
Unknown 		4 Approaches
0 Driveways
33.2698 		Other (At-Grade)
Single-Lane 		2007 No splitter islands. Uncertain traffic control. ICD estimated from Google Maps linework.
Hughesville, MD
Charles Co.
United States 		MD 231 / MD 5 NB Ramps
(38.53426, -76.77790) 		Roundabout
Existing 		Unknown
Unknown 		3 Approaches
0 Driveways
54.1863 		Freeway Ramps (Grade-Separated)
Multilane (2 Lane, unspecified) 		2005 ICD estimated from Google Maps linework.
Hughesville, MD
Charles Co.
United States 		MD 231 / MD 5 SB Ramps
(38.53381, -76.77969) 		Roundabout
Existing 		Unknown
Unknown 		3 Approaches
0 Driveways
58.8579 		Freeway Ramps (Grade-Separated)
Multilane (2 Lane, unspecified) 		2005 ICD estimated from Google Maps linework.
Owings Mills, MD
Baltimore Co.
United States 		Grand Central Ave. / (parking)
(39.40581, -76.78033) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
48.7680 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		2014 Year Completed estimated (2011-2014).
Oak Grove, MD
Prince Georges Co.
United States 		MD 193 (Watkins Park Dr.) / Oak Grove Rd.
(38.87737, -76.78108) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
38.1207 		Other (At-Grade)
Single-Lane 		2001 ICD estimated from Google Maps linework.
Chaptico, MD
St. Marys Co.
United States 		MD 234 / MD 238
(38.36791, -76.78179) 		Roundabout
Existing 		Unknown
Unknown 		4 Approaches
0 Driveways
35.5833 		Other (At-Grade)
Single-Lane 		2007 ICD estimated from Google Maps linework.
Ellicott City, MD
Howard Co.
United States 		MD 103 / MD 100 EB Ramps
(39.20733, -76.78243) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
30.5396 		Freeway Ramps (Grade-Separated)
Single-Lane 		1998 Opened November 1998. ICD estimated from Google Maps linework.
Williamsburg, VA
James City Co.
United States 		Fords Colony Dr. / St. Andrews Dr.
(37.30351, -76.78289) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
66.5009 		Other (At-Grade)
Single-Lane 		2004 ICD estimated from Google Maps linework.
Ellicott City, MD
Howard Co.
United States 		MD 103 / MD 100 WB Ramps
(39.20846, -76.78294) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
33.3154 		Freeway Ramps (Grade-Separated)
Single-Lane 		1998 Opened November 1998. ICD estimated from Google Maps linework.
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.
Annapolis Junction, MD
Anne Arundel Co.
United States 		Guilford Rd. / MD 32 WB Ramps
(39.12294, -76.78472) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
32.4293 		Freeway Ramps (Grade-Separated)
Single-Lane 		2002 Bypass lanes on all legs. ICD estimated from Google Maps linework.
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.
Owings Mills, MD
Baltimore Co.
United States 		(unknown)
(39.39269, -76.78657) 		Other
Existing 		Unknown
Unknown 		2 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane
Owings Mills, MD
Baltimore Co.
United States 		Painters Mill Rd. / Lyons Mill Rd.
(39.39425, -76.78747) 		Other
Existing 		All-Way Yield
Unknown 		3 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Multilane (2 Lane, unspecified)
Ellicott City, MD
Howard Co.
United States 		Academy Rd. / Hillsborough Rd. / Chews Vineyard
(39.24993, -76.78913) 		Other
Existing 		Unknown
Unknown 		4 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane 		No splitter islands.
Horseheads, NY
Chemung Co.
United States 		Rte 13 / Old Ithaca Rd. / Breesport Rd.
(42.18851, -76.79076) 		Roundabout
Existing 		All-Way Yield
Unknown 		4 Approaches
0 Driveways
29.2025 		Other (At-Grade)
Single-Lane 		2012 ICD estimated from Google Maps linework.
Ellicott City, MD
Howard Co.
United States 		College Ave. / Bending Sky Way
(39.25754, -76.79122) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
26.8186 		Other (At-Grade)
Single-Lane 		2012 ICD estimated from Google Maps linework.
Lingelstown, PA
Dauphin Co.
United States 		Lingelstown Rd. / N. Mountain Rd.
(40.34341, -76.79206) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
20.9367 		Other (At-Grade)
Single-Lane 		2011 Previously controlled by two-way stop ICD estimated from Google Maps linework.
Ellicott City, MD
Howard Co.
United States 		Nightingale Ct. / Academy Rd.
(39.24564, -76.79297) 		Other
Existing 		Unknown
Unknown 		2 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Unknown
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.
Elmira, NY
Chemung Co.
United States 		Maple Ave. / Horner St.
(42.08282, -76.79445) 		Roundabout
Existing 		All-Way Yield
Unknown 		4 Approaches
0 Driveways
17.7281 		Other (At-Grade)
Single-lane w/ Traversable Central Island 		2012 Year completed estimated (2011-2013). ICD estimated from Google Maps linework.