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
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.
Harrisburg, PA
Dauphin Co.
United States 		Derry St. / Mulberry St.
(40.26312, -76.86948) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-lane w/ Traversable Central Island 		2022 https://theburgnews.com/news/project-to-make-harrisburgs-mulder-square-safer-greener-nears-completion
Columbia, MD
Howard Co.
United States 		Owen Brown Rd. / Martin Rd.
(39.19989, -76.86930) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
28.9560 		Other (At-Grade)
Single-Lane 		2004 Year Completed estimated (2002-2005).
Hampstead, MD
Carroll Co.
United States 		MD-30 (Hampstead Bypass) / Business MD 30 (Hanover Pike)
(39.63466, -76.86675) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
49.6684 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		2009 ICD estimated from Google Maps linework.
Newport, NC
Carteret Co.
United States 		White Sands Blvd. / Deer Run / Merry Woods Dr.
(34.80021, -76.86634) 		Other
Existing 		Unknown
Unknown 		4 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane 		No splitter islands.
Hampstead, MD
Carroll Co.
United States 		MD 30 (Hampstead Bypass) / MD 482 (Hampstead Mexico Rd.)
(39.61108, -76.86457) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
53.3657 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		2009 ICD estimated from Google Maps linework.
Laurel, MD
Howard Co.
United States 		Old Scaggsville Rd. / High Ridge Rd. / Running Deer Dr.
(39.11815, -76.86396) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
27.7985 		Other (At-Grade)
Single-Lane 		2015 ICD estimated from Google Maps linework.
Spring Grove, PA
York Co.
United States 		Rte. 116 (Hanover St.) / Roths Church Rd. / W. Hanover St.
(39.88301, -76.86363) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
47.6567 		Other (At-Grade)
Single-Lane 		2007 http://www.yorkdispatch.com/local/ci_6708523 ICD estimated from Google Maps linework.
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)
Laurel, MD
Prince George's Co.
United States 		Montrose Ave. / Harrison Dr.
(39.09979, -76.85955) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
24.3840 		Other (At-Grade)
Single-Lane 		2008 Year Completed estimated (2007-2008).
Southport, NY
Chemung Co.
United States 		Pennsylvania Ave. / Rte 328 (SB Direction)
(42.04228, -76.85541) 		Roundabout
Existing 		All-Way Yield
Unknown 		3 Approaches
0 Driveways
39.0266 		Other (At-Grade)
Single-Lane 		2016 Yield-controlled right-turn bypass lanes on north and west legs. Year Completed estimated (2013-2016). ICD estimated from Google Maps linework.
Columbia, MD
Howard Co.
United States 		Vantage Point Rd.
(39.22074, -76.85392) 		Other
Existing 		Unknown
Unknown 		3 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Unknown
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).
Glenarden, MD
Prince George's Co.
United States 		Ruby Lockhart Blvd. / Evarts St. / Sir Michael Pl.
(38.92506, -76.84953) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
48.7680 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		2011 Double left-turn and double right-turn movements.
Glenarden, MD
Prince George's Co.
United States 		Campus Way N / McHugh Dr.
(38.92127, -76.84944) 		Other
Existing 		All-Way Yield
Unknown 		4 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane 		Inside shopping center. No splitter islands on northwest and southeast legs.
Glenarden, MD
Prince George's Co.
United States 		Campus Way N / Woodmore Center Dr.
(38.92263, -76.84787) 		Other
Existing 		All-Way Yield
Unknown 		4 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane 		Inside shopping center. No splitter islands on northwest and southeast legs.
Columbia, MD
Howard Co.
United States 		Stevens Forest Rd. / Farewell Rd. / Night Street Hill
(39.20114, -76.84781) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
27.4320 		Other (At-Grade)
Single-lane w/ Traversable Central Island 		2019
Ritchie, MD
Prince Georges Co.
United States 		Ritchie-Marlboro Rd. / I-95 SB Ramps
(38.86894, -76.84738) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
770.9968 		Freeway Ramps (Grade-Separated)
Multilane (3+ Lane) 		2001 Opening initially with two lanes. Expanded from two lanes to three lanes in 2010. 21442
Glenarden, MD
Prince George's Co.
United States 		Ruby Lockhart Blvd. / Campus Way
(38.92345, -76.84696) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
48.7680 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		2011
Laurel, MD
Howard Co.
United States 		Stephens Rd. / Whiskey Bottom Rd.
(39.12704, -76.84608) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
29.6480 		Other (At-Grade)
Single-Lane 		2005 ICD estimated from Google Maps linework.
Upper Marlboro, MD
Prince George's Co.
United States 		Rock Spring Dr. / (unknown)
(38.83762, -76.84567) 		Roundabout
Existing 		All-Way Yield
Unknown 		3 Approaches
0 Driveways
51.8160 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		2018 Year Completed estimated (2018-2019).
Summerfield, MD
Prince George's Co.
United States 		Campus Way / Geaton Park Pl.
(38.92577, -76.84451) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
48.7680 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		2011
Summerfield, MD
Prince George's Co.
United States 		Ruby Lockhart Blvd. / Taj Ln.
(38.92163, -76.84438) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
48.7680 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		2011
Laurel, MD
Howard Co.
United States 		Boulder Ridge Rd. / Polished Pebble Way
(39.13864, -76.84358) 		Other
Existing 		Unknown
Unknown 		3 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane 		No splitter islands.
Upper Marlboro, MD
Prince George's Co.
United States 		Central Park Dr. / Rock Spring Dr.
(38.83296, -76.84354) 		Roundabout
Existing 		All-Way Yield
Unknown 		3 Approaches
0 Driveways
50.2920 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		2016
Hampstead, MD
Carroll Co.
United States 		MD 30 (Hampstead Bypass) / Business MD 30 (Hanover Pike)
(39.58178, -76.84261) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
56.1498 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		2009 ICD estimated from Google Maps linework.
Laurel, MD
Howard Co.
United States 		Whiskey Bottom Rd. / All Saints Rd.
(39.12478, -76.84257) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
25.9428 		Other (At-Grade)
Single-Lane 		2007 ICD estimated from Google Maps linework.
Bowie, MD
Prince George's Co.
United States 		Faircrest Circle
(38.92760, -76.84166) 		Other
Existing 		Unknown
Unknown 		2 Approaches
18 Driveways
0.0000 		Other (At-Grade)
Single-Lane
Ritchie, MD
Prince Georges Co.
United States 		Ritchie-Marlboro Rd. / I-95 NB Ramps
(38.86824, -76.84158) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
67.0560 		Freeway Ramps (Grade-Separated)
Multilane (3+ Lane) 		2001 Opened initially with two lanes. Expanded from two lanes to three lanes in 2010. 21442
Laurel, MD
Howard Co.
United States 		Weathered Stone Way / Boulder Ridge Rd. / Stone Lake Dr.
(39.13774, -76.84066) 		Other
Existing 		Unknown
Unknown 		3 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane
Summerfield, MD
Prince George's Co.
United States 		Saint Josephs Dr. / Grove Hurst Ln.
(38.91969, -76.84060) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
53.3400 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		2012
Columbia, MD
Howard Co.
United States 		Cradlerock Way / Homespun Dr.
(39.19095, -76.83787) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
22.2158 		Other (At-Grade)
Single-Lane 		2001 Completed May 21, 2001. Previously controlled by one-way stop Functional Class: Collector ICD estimated from Google Maps linework.
Hampstead, MD
Carroll Co.
United States 		MD 88 / MD 833
(39.60434, -76.83682) 		Roundabout
Existing 		Unknown
Unknown 		4 Approaches
0 Driveways
34.0470 		Other (At-Grade)
Single-Lane 		2004 ICD estimated from Google Maps linework.
Columbia, MD
Howard Co.
United States 		Oakland Mills Rd. / MD 175 SB Ramps / (unknown)
(39.21308, -76.83456) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
36.5760 		Freeway Ramps (Grade-Separated)
Single-Lane 		2017 Year Completed estimated (2016-2017).
Upper Marlboro, MD
Prince George's Co.
United States 		Woodyard Rd. / Observatory Pl.
(38.82198, -76.83374) 		Other
Existing 		Unknown
Unknown 		3 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane 		Parking along circulatory roadway.
Ellicott City, MD
Howard Co.
United States 		Columbia Rd. / Hemlock Cone Way / Kingscup Ct.
(39.24949, -76.83326) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
21.3360 		Other (At-Grade)
Single-lane w/ Traversable Central Island 		2019
Columbia, MD
Howard Co.
United States 		Oakland Mills Rd. / Old Montgomery Rd.
(39.20788, -76.83157) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
38.1000 		Other (At-Grade)
Single-Lane 		2017
Muncy, PA
Lycoming Co.
United States 		Lycoming Mall Circle
(41.24320, -76.82846) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
28.7372 		Other (At-Grade)
Single-Lane 		2009 ICD estimated from Google Maps linework.
Columbia, MD
Howard Co.
United States 		Tamar Dr. / Old Montgomery Rd.
(39.20533, -76.82822) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
30.4800 		Other (At-Grade)
Single-Lane 		2022 https://www.howardcountymd.gov/News090122c
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
Lake Arbor, MD
Prince George's Co.
United States 		Lake Arbor Way / Fairlakes Pl
(38.90717, -76.82304) 		Other
Existing 		Unknown
Unknown 		4 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane
Owings Mills, MD
Baltimore Co.
United States 		Upper Mill Dr. / Bluestem Ct. /Spring Willow Ct. / Bayline Cir.
(39.41253, -76.82032) 		Other
Existing 		Unknown
Unknown 		4 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane 		No splitter islands.
Lake Arbor, MD
Prince George's Co.
United States 		Lake Arbor Way / Golf Course Dr.
(38.90618, -76.81975) 		Other
Existing 		Unknown
Unknown 		4 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane
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
Horseheads, NY
Chemung Co.
United States 		Old Ithaca Rd. / Horseheads Connector Rd. / E St.
(42.17554, -76.81741) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane 		2023
Villages of Winterset, MD
Baltimore Co.
United States 		Runnymeade Rd. / New Town Blvd. / Bon Haven Ln.
(39.39893, -76.81700) 		Other
Existing 		Unknown
Unknown 		4 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane
Reisterstown, MD
Baltimore Co.
United States 		Winged Foot Dr. / Crystal Downs Ct. / Kauri Cliffs Rd.
(39.42897, -76.81445) 		Other
Existing 		Unknown
Unknown 		4 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane 		No splitter islands.
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
Columbia, MD
Howard Co.
United States 		Golden Straw Ln. / Long Meadow Ct.
(39.21441, -76.81085) 		Traffic Calming Circle
Existing 		Other
None 		3 Approaches
0 Driveways
99.0123 		Other (At-Grade)
Single-Lane 		2000 Yield control only on west leg. ICD estimated from Google Maps linework.
Columbia, MD
Howard Co.
United States 		Golden Straw Ln. / Davis Rd.
(39.21597, -76.81084) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
 Other (At-Grade)
Single-lane w/ Traversable Central Island 		2000 Completed April 28, 2000. Pedestrian ramps into circulatory roadway.
Elmira, NY
Chemung Co.
United States 		N Main St. / Park Pl. / W 3rd St.
(42.09278, -76.80993) 		Roundabout
Existing 		All-Way Yield
None 		5 Approaches
0 Driveways
33.6780 		Other (At-Grade)
Single-Lane 		2019 https://www.mytwintiers.com/local-news-3/elmira-cultural-connectors-ribbon-cutting-took-place-and-the-roundabout-is-officially-open/ ICD estimated from Google Maps linework.
Lake Arbor, MD
Prince George's Co.
United States 		Lake Arbor Way / Congressional Ct.
(38.90201, -76.80962) 		Other
Existing 		Unknown
Unknown 		4 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane
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.
Owings Mills, MD
Baltimore Co.
United States 		New Town Blvd. / Rangeford Dr.
(39.40957, -76.80654) 		Other
Existing 		Unknown
Unknown 		4 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane
Toano, VA
James City Co.
United States 		Weathers Blvd. / Kenton Ct.
(37.40490, -76.80636) 		Other
Existing 		Unknown
Unknown 		4 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane
Ellicott City, MD
Howard Co.
United States 		MD 104 (Waterloo Rd.) / MD 100 WB Ramps
(39.22470, -76.80600) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
45.7200 		Freeway Ramps (Grade-Separated)
Multilane (2 Lane, 2x2 max) 		1999
Horseheads, NY
Chemung Co.
United States 		Rte 13 / Horseheads Connector Rd.
(42.17077, -76.80564) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane 		2023
Horseheads, NY
Chemung Co.
United States 		Rte 13 / E. Franklin St.
(42.16756, -76.80553) 		Roundabout
Existing 		All-Way Yield
Unknown 		4 Approaches
0 Driveways
32.7531 		Other (At-Grade)
Single-Lane 		2012 ICD estimated from Google Maps linework.
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).
Lingelstown, PA
Dauphin Co.
United States 		Lingelstown Rd. / Blue Mountain Pkwy.
(40.34253, -76.79711) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
24.5782 		Other (At-Grade)
Single-Lane 		2011 Previously controlled by two-way stop ICD estimated from Google Maps linework.
Elmira, NY
Chemung Co.
United States 		Maple Ave. / Caldwell Ave.
(42.08399, -76.79589) 		Roundabout
Existing 		All-Way Yield
Unknown 		4 Approaches
0 Driveways
8.8639 		Other (At-Grade)
Single-lane w/ Traversable Central Island 		2012 Year completed estimated (2011-2013). ICD estimated from Google Maps linework.
Ellicott City, MD
Howard Co.
United States 		Snowden River Pkwy. / MD 100 WB Ramps
(39.21233, -76.79544) 		Roundabout
Existing 		All-Way Yield
Metering Signal 		3 Approaches
0 Driveways
25.9105 		Freeway Ramps (Grade-Separated)
Single-Lane 		1998 Opened November 1998. Metering signal on Snowden River Pkwy approach. ICD estimated from Google Maps linework.
Ellicott City, MD
Howard Co.
United States 		Hillsborough Rd. / English Morning Ln.
(39.25046, -76.79507) 		Other
Existing 		Unknown
Unknown 		3 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane 		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.
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.
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
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 		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.
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 		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.
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)
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 		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.
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 		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.
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.
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 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.
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.
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.
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).
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.
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.
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.