Roundabouts Database

28782 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
Abbottstown, PA
Adams Co.
United States 		King St. / Queen St.
(39.88671, -76.98461) 		Other
Existing 		All-Way Yield
Unknown 		4 Approaches
4 Driveways
33.9077 		Other (At-Grade)
Single-Lane 		Parking along circulatory roadway. ICD estimated from Google Maps linework.
Waldorf, MD
Charles Co.
United States 		Davis Rd. / (School entrance)
(38.63609, -76.97873) 		Roundabout
Existing 		All-Way Yield
None 		2 Approaches
1 Driveways
33.5852 		Other (At-Grade)
Single-Lane 		2005 Functional Class: Local ICD estimated from Google Maps linework.
Washington, DC
N/A Co.
United States 		New York Ave. / Montana Ave. / West Virginia Ave.
(38.91723, -76.97813) 		Signalized Roundabout/Circle
Existing 		Signal
None 		0 Approaches
0 Driveways
65.9769 		Other (At-Grade)
Unknown 		ICD estimated from Google Maps linework.
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
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
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.
Westminster, MD
Carroll Co.
United States 		Market St. / Gorsuch Rd.
(39.57010, -76.97452) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
26.6987 		Other (At-Grade)
Single-Lane 		2005 Right-turn bypass lanes on SW and SE quadrants. ICD estimated from Google Maps linework.
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).
Hanover, PA
York Co.
United States 		E Walnut St. / Hollywood Ave.
(39.82089, -76.97224) 		Other
Existing 		Uncontrolled
Unknown 		4 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane
Hanover, PA
York Co.
United States 		E Walnut St. / Keagy Ave.
(39.82267, -76.97161) 		Other
Existing 		Uncontrolled
Unknown 		4 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane
Westminster, MD
Carroll Co.
United States 		Old Westminster Pike / N Chandler Dr.
(39.55808, -76.97130) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
33.5280 		Other (At-Grade)
Single-Lane 		2018 Year Completed estimated (2017-2018).
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.
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
Mechanicsburg, PA
Cumberland Co.
United States 		Lake Dr. / Harvest Dr.
(40.18397, -76.96982) 		Other
Existing 		Unknown
Unknown 		3 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Unknown
Saint Charles, MD
Charles Co.
United States 		Lexington Dr. / Montpelier Dr.
(38.64225, -76.96877) 		Other
Existing 		Unknown
Unknown 		4 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane
Mechanicsburg, PA
Cumberland Co.
United States 		Orchard Blvd. / Lake Dr.
(40.18776, -76.96866) 		Other
Existing 		Unknown
Unknown 		3 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Unknown
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.
Sykesville, MD
Carroll Co.
United States 		Smithfield Ave. / Warfield Ave.
(39.37673, -76.96410) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
47.0835 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		2007 Elliptical shape. ICD estimated from Google Maps linework.
Washington, DC
N/A Co.
United States 		Randle Circle (Mass. Ave. / Minn. Ave. / K St.)
(38.87810, -76.96148) 		Signalized Roundabout/Circle
Existing 		Signal
None 		7 Approaches
0 Driveways
118.0801 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		ICD estimated from Google Maps linework.
Mount Rainier, MD
Prince Georges Co.
United States 		US 1 / 34th St. / Perry St.
(38.93647, -76.96074) 		Roundabout
Existing 		All-Way Yield
None 		5 Approaches
0 Driveways
41.1480 		Other (At-Grade)
Multilane (2 Lane, 2x1 max) 		2001 Oval shaped. ICD = 135 ft x 115 ft.
Mechanicsburg, PA
Cumberland Co.
United States 		Orchard Blvd. / Mcintosh Dr.
(40.18977, -76.96065) 		Other
Existing 		Unknown
Unknown 		4 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Unknown
Temple Hills, MD
Prince Georges Co.
United States 		MD 637 (Naylor Rd.) / Oxon Run Dr.
(38.84986, -76.95789) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
34.4150 		Other (At-Grade)
Single-Lane 		2001 ICD estimated from Google Maps linework.
Mechanicsburg, PA
Cumberland Co.
United States 		Haralson Dr. / Stellar Dr.
(40.19368, -76.95742) 		Other
Existing 		Unknown
Unknown 		4 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Unknown
Temple Hills, MD
Prince Georges Co.
United States 		MD 637 (Naylor Rd.) / Good Hope Ave.
(38.84922, -76.95655) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
31.6248 		Other (At-Grade)
Single-Lane 		2001 ICD estimated from Google Maps linework.
Mechanicsburg, PA
Cumberland Co.
United States 		Haralson Dr. / Norland St.
(40.19355, -76.95545) 		Other
Existing 		Unknown
Unknown 		4 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Unknown
Clarksville, MD
Howard Co.
United States 		Brighton Dam Rd. / Ten Oaks Rd.
(39.20491, -76.95455) 		Roundabout
Existing 		Unknown
Unknown 		3 Approaches
0 Driveways
35.1680 		Other (At-Grade)
Single-Lane 		2008 ICD estimated from Google Maps linework.
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
College Park, MD
Prince George's Co.
United States 		Fieldhouse Dr. / Presidential Dr.
(38.98872, -76.95237) 		Other
Existing 		Unknown
Unknown 		2 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane
Accokeek, MD
Prince George's Co.
United States 		St Mary's View Rd. / Lusby Ridge Rd.
(38.69721, -76.95157) 		Other
Existing 		All-Way Yield
Unknown 		4 Approaches
0 Driveways
27.4320 		Other (At-Grade)
Single-Lane 		No splitter island on south leg.
College Park, MD
Prince George's Co.
United States 		Stadium Dr. / Alumni Dr.
(38.99151, -76.94948) 		Other
Existing 		All-Way Yield
Unknown 		4 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Multilane (2 Lane, unspecified)
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).
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.
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
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
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
Mechanicsburg, PA
Cumberland Co.
United States 		Lisburn Rd. / Arcona Rd.
(40.19402, -76.94066) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane 		2019 https://www.wgal.com/article/lower-allen-township-roundabouts-open/29751390
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.
Mechanicsburg, PA
Cumberland Co.
United States 		Lisburn Rd. / Rossmoyne Rd.
(40.19649, -76.94005) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane 		2019 https://www.wgal.com/article/lower-allen-township-roundabouts-open/29751390
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.
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).
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.
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).
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).
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).
Sykesville, MD
Carroll Co.
United States 		Bennett Rd. / Monroe Ave.
(39.41306, -76.92967) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
26.7590 		Other (At-Grade)
Single-Lane 		2006 ICD estimated from Google Maps linework.
Burtonsville, MD
Montgomery Co.
United States 		Dustin Rd. / US 29 SB Offramp / Columbia Pike
(39.12256, -76.92656) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
43.5482 		Freeway Ramps (Grade-Separated)
Single-Lane 		2006 Fatal crash October 14, 2007.: http://www.fredericknewspost.com/sections/news/display.htm?StoryID=66411. 11861-05. ICD estimated from Google Maps linework.
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.
Calverton, MD
Prince George's Co.
United States 		Bay Hill Dr. / Innisbrook Dr.
(39.06579, -76.92532) 		Other
Existing 		Unknown
Unknown 		4 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane 		No splitter islands.
Old Town College Park, MD
Prince George's Co.
United States 		52nd Ave. / (unknown)
(38.97496, -76.92410) 		Other
Existing 		Unknown
Unknown 		2 Approaches
1 Driveways
0.0000 		Other (At-Grade)
Unknown
College Park, MD
Prince George's Co.
United States 		River Rd. / University Research Ct. / Haig Dr.
(38.96838, -76.92358) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
39.0005 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		2013 Year Completed estimated (2012-2013). ICD estimated from Google Maps linework.
Columbia, MD
Howard Co.
United States 		Trotter Rd. / South Wind Cir.
(39.20956, -76.91891) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
23.1353 		Other (At-Grade)
Single-Lane 		1997 Functional Class: Collector. Year Completed estimated (1993-2001). ICD estimated from Google Maps linework.
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.
Greenbelt, MD
Prince George's Co.
United States 		Greenbelt Station Pkwy. / Stream Bank Ln.
(39.00060, -76.91754) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
28.9560 		Other (At-Grade)
Single-Lane 		2014 Crosswalks at yield line on all leg. Year Completed estimated (2013-2014). West leg opened 2016.
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
Greenbelt, MD
Prince George's Co.
United States 		Greenbelt Station Pkwy. / S Center Dr.
(39.00209, -76.91666) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
32.0040 		Other (At-Grade)
Single-Lane 		2017
Greenbelt, MD
Prince George's Co.
United States 		Greenbelt Station Pkwy. / Stream Bank Ln.
(39.00374, -76.91563) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
28.9560 		Other (At-Grade)
Single-Lane 		2017
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
Villa El Salvador, Lima
Province of Lima
Peru 		Óvalo María Reiche
(-12.23977, -76.91229) 		Unknown
Existing 		Unknown
Unknown 		3 Approaches
0 Driveways
 Other (At-Grade)
Unknown
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).
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.
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
Scaggsville, MD
Howard Co.
United States 		MD 216 / Westside Blvd.
(39.14796, -76.90977) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
41.6801 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		2009 Series of 4 roundabouts. Functional Class: Arterial ICD estimated from Google Maps linework.
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
Scaggsville, MD
Howard Co.
United States 		Westside Blvd. / (parking lot)
(39.14952, -76.90856) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
31.4909 		Other (At-Grade)
Single-Lane 		2008 ICD estimated from Google Maps linework.
Scaggsville, MD
Howard Co.
United States 		MD 216 / Maple Lawn Blvd.
(39.14710, -76.90723) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
40.7543 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		2005 Series of 4 roundabouts. Functional Class: Arterial ICD estimated from Google Maps linework.
Scaggsville, MD
Howard Co.
United States 		Maple Lawn Blvd. / Iager Blvd.
(39.15816, -76.90440) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
33.3392 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		2005 ICD estimated from Google Maps linework.
Scaggsville, MD
Howard Co.
United States 		MD 216 / US 29 SB Ramps
(39.14562, -76.90418) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
53.7228 		Freeway Ramps (Grade-Separated)
Multilane (2 Lane, unspecified) 		2001 Series of 4 roundabouts. ICD estimated from Google Maps linework.
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).
Greenbelt, MD
Prince George's Co.
United States 		Cherrywood Ln. / Greenbelt Metro Dr.
(39.00985, -76.90330) 		Roundabout
Existing 		All-Way Yield
Other 		3 Approaches
0 Driveways
24.1290 		Other (At-Grade)
Single-Lane 		2012 Raised crosswalks. ICD estimated from Google Maps linework.
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
Scaggsville, MD
Howard Co.
United States 		Maple Lawn Blvd. / Tawes St.
(39.15364, -76.90125) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
34.2675 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		2006 ICD estimated from Google Maps linework.
South Laurel, MD
Prince George's Co.
United States 		Frost Pl. / (parking)
(39.09016, -76.90091) 		Other
Existing 		Unknown
Unknown 		2 Approaches
1 Driveways
0.0000 		Other (At-Grade)
Single-Lane
Scaggsville, MD
Howard Co.
United States 		Ice Crystal Dr. / Birchtree Ln.
(39.14355, -76.89912) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
28.7147 		Other (At-Grade)
Single-Lane 		2003 ICD estimated from Google Maps linework.
Scaggsville, MD
Howard Co.
United States 		MD 216 / US 29 NB Ramps / Ice Crystal Dr.
(39.14476, -76.89799) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
53.7234 		Freeway Ramps (Grade-Separated)
Multilane (2 Lane, unspecified) 		2001 Series of 4 roundabouts. ICD estimated from Google Maps linework.
Greenbelt, MD
Prince George's Co.
United States 		Golden Triangle Dr. / (parking)
(38.99762, -76.89644) 		Other
Existing 		Unknown
Unknown 		4 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Unknown
Harrisburg, PA
Dauphin Co.
United States 		N 2nd St. / Kelker St.
(40.27418, -76.89553) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
18.2880 		Other (At-Grade)
Single-lane w/ Traversable Central Island 		2022
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.
Harrisburg, PA
Dauphin Co.
United States 		N 2nd St. / Reily St.
(40.27050, -76.89293) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
21.9456 		Other (At-Grade)
Single-lane w/ Traversable Central Island 		2022 Year Completed estimated (2021-2022).
Harrisburg, PA
Dauphin Co.
United States 		N 2nd St. / Verbeke St.
(40.26853, -76.89149) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
21.9456 		Other (At-Grade)
Single-lane w/ Traversable Central Island 		2022 Year Completed estimated (2021-2022).
Laurel, MD
Prince George's Co.
United States 		W Side Blvd. / (parking)
(39.08512, -76.89003) 		Other
Existing 		Unknown
Unknown 		3 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane 		No splitter islands.
Scaggsville, MD
Howard Co.
United States 		Hopkins-Gorman Rd. / US 29 NB Ramps
(39.15846, -76.88660) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
59.2695 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		2002 ICD estimated from Google Maps linework.
Harrisburg, PA
Dauphin Co.
United States 		N 7th St. / Reily St.
(40.27393, -76.88481) 		Roundabout
Existing 		All-Way Yield
Unknown 		3 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Unknown 		2022
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
Columbia, MD
Howard Co.
United States 		Charter Dr. / (parking)
(39.21273, -76.88310) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
27.4320 		Other (At-Grade)
Single-Lane 		2013 Converted from cul-de-sac. Year Completed estimated (2011-2014).
Konterra, MD
Prince George's Co.
United States 		Belle Chasse Blvd. / (parking) (west)
(39.07512, -76.88073) 		Other
Existing 		Unknown
Unknown 		3 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane 		No splitter islands.
Konterra, MD
Prince George's Co.
United States 		Belle Chasse Blvd. / Belle Chasse Blvd. (south)
(39.07274, -76.88060) 		Other
Existing 		Unknown
Unknown 		3 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane 		No splitter islands.
Konterra, MD
Prince George's Co.
United States 		Belle Chasse Blvd. / Belle Chasse Blvd. (southwest)
(39.07731, -76.88037) 		Other
Existing 		Unknown
Unknown 		3 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane 		No splitter islands.
Columbia, MD
Howard Co.
United States 		Harpers Farm Rd. / Campus Dr.
(39.21534, -76.88023) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
31.4614 		Other (At-Grade)
Single-Lane 		2003 Originally had 4 legs. ICD estimated from Google Maps linework.
Konterra, MD
Prince George's Co.
United States 		Belle Chasse Blvd. / (parking) (east)
(39.07499, -76.87964) 		Other
Existing 		Unknown
Unknown 		3 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane 		No splitter islands.
Konterra, MD
Prince George's Co.
United States 		Belle Chasse Blvd. / Belle Chasse Blvd. (north)
(39.07820, -76.87960) 		Other
Existing 		Unknown
Unknown 		3 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane 		No splitter islands.
Konterra, MD
Prince George's Co.
United States 		Belle Chasse Blvd. / Belle Chasse Blvd. (southeast)
(39.07714, -76.87923) 		Other
Existing 		Unknown
Unknown 		3 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane 		No splitter islands.
Greenbelt, MD
Prince George's Co.
United States 		Hanover Pkwy. / (unknown)
(38.98589, -76.87602) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
24.3840 		Other (At-Grade)
Single-Lane 		2004 Year Completed estimated (2002-2005).
Southport, NY
Chemung Co.
United States 		Rte 328 / Pennsylvania Ave.
(42.03433, -76.87601) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
48.7894 		Other (At-Grade)
Single-Lane 		2015 ICD estimated from Google Maps linework.
Brandywine, MD
Prince George's Co.
United States 		MD 373 / Accokeek Rd. / MD 5 (Branch Ave.) SB On-Ramp
(38.70076, -76.87599) 		Roundabout
Existing 		All-Way Yield
None 		2 Approaches
0 Driveways
39.6240 		Freeway Ramps (Grade-Separated)
Single-Lane 		2019 MD 5 (Branch Ave.) was converted to limited access. https://www.thebaynet.com/articles/0419/newtrafficshiftstartsinbrandywineareathursday.html.
Lower Allen, PA
Cumberland Co.
United States 		Tisbury Circle
(40.22128, -76.87520) 		Other
Existing 		Unknown
Unknown 		3 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane 		No splitter islands.
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
Greenbelt, MD
Prince Georges Co.
United States 		Hanover Pkwy. / Village Park Dr. / Schrom Hills Community Park entrance
(38.98378, -76.87333) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
19.4960 		Other (At-Grade)
Single-Lane 		1998 Year Completed estimated (1994-2001). ICD estimated from Google Maps linework.
Columbia, MD
Howard Co.
United States 		Banneker Rd. / Cul-de-sac
(39.21141, -76.87041) 		Traffic Calming Circle
Existing 		Unknown
Unknown 		3 Approaches
0 Driveways
17.5824 		Other (At-Grade)
Single-Lane 		Functional Class: Local ICD estimated from Google Maps linework.