Roundabouts Database

29616 Results

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City, State
County
Country 		Intersection
(Lat, Lng) 		Type
Status 		Control Type / Other Control Type Approaches / Driveways / ICD (m) Functional Class /
LaneType 		Year Completed Comments
Orono, ME
Penobscot Co.
United States 		US 2 (Park St.) / Rangeley Rd.
(44.89256, -68.66258) 		Roundabout
Existing 		All-Way Yield
Rectangular Rapid Flashing Beacon (RRFB) 		3 Approaches
1 Driveways
37.2284 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		2018 Hybrid multilane roundabout with right-turn bypasses. ICD estimated from Google Maps linework.
Falmouth, ME
Cumberland Co.
United States 		Rte 9 (Longwoods Rd.) / Middle Rd. / Woods Rd.
(43.73522, -70.23748) 		Roundabout
Existing 		All-Way Yield
Unknown 		4 Approaches
0 Driveways
35.3811 		Other (At-Grade)
Single-Lane 		2018 ICD estimated from Google Maps linework.
South Portland, ME
Cumberland Co.
United States 		Cottage Rd. / Ocean St. / E St.
(43.63825, -70.25291) 		Other
Existing 		All-Way Stop
Unknown 		5 Approaches
0 Driveways
24.2018 		Other (At-Grade)
Single-Lane 		ICD estimated from Google Maps linework.
Kennebunk, ME
York Co.
United States 		Fletcher (Rte 35) / Storer St.
(43.39060, -70.54562) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
23.4334 		Other (At-Grade)
Single-Lane 		2003 Completed Fall 2003. Legs at 6, 8, and 10 oclock, plus a driveway. ICD estimated from Google Maps linework.
Gorham, ME
Cumberland Co.
United States 		US 202 / Rte. 4 / Rte. 237
(43.72846, -70.42525) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
25.0285 		Other (At-Grade)
Single-Lane 		1997 Previously controlled by two-way stop ICD estimated from Google Maps linework.
Kittery, ME
York Co.
United States 		US 1 / Rte 236
(43.10072, -70.74415) 		Rotary
Existing 		Unknown
Unknown 		0 Approaches
0 Driveways
91.5646 		Other (At-Grade)
Unknown 		ICD estimated from Google Maps linework.
Gorham, ME
Cumberland Co.
United States 		Rte. 112 / Rte. 114
(43.65213, -70.42751) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
45.7999 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		2008 ICD estimated from Google Maps linework.
Gorham, ME
Cumberland Co.
United States 		Rte. 112 / Rte. 4
(43.66904, -70.45676) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
32.8284 		Other (At-Grade)
Single-Lane 		2008 ICD estimated from Google Maps linework.
Gorham, ME
Cumberland Co.
United States 		Rte. 112 / Rte. 25
(43.67923, -70.46568) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
38.0054 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		2008 ICD estimated from Google Maps linework.
Caribou, ME
Aroostook Co.
United States 		US 1 / Main St.
(46.87866, -68.01031) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
36.7370 		Other (At-Grade)
Single-Lane 		2007 ICD estimated from Google Maps linework.
Sanford, ME
York Co.
United States 		Rte 109 (Main St.) / Rte 4 (Alfred Rd.-Country Club Rd.)
(43.41111, -70.74237) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
44.2481 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		2009 Yield-controlled right-turn bypass lane on north leg. ICD estimated from Google Maps linework.
Auburn, ME
Androscoggin Co.
United States 		Turner St. / North Parking
(44.12178, -70.23315) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
28.2930 		Other (At-Grade)
Single-Lane 		2008 Two right-turn bypass lanes. In shopping center. ICD estimated from Google Maps linework.
Auburn, ME
Androscoggin Co.
United States 		Turner St. / South Parking
(44.11903, -70.23272) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
31.7239 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		2008 Right-turn bypass lane. In shopping center. ICD estimated from Google Maps linework.
Biddeford, ME
York Co.
United States 		(parking access) / (parking lot)
(43.47416, -70.51186) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
30.3347 		Other (At-Grade)
Single-Lane 		2007 Separate right-turn lane on one approach. In shopping center. ICD estimated from Google Maps linework.
Augusta, ME
Kennebec Co.
United States 		Cony Circle (Rte. 9 / Rte. 100 / Rte. 17 / Rte. 105)
(44.31622, -69.76796) 		Roundabout
Existing 		Unknown
Unknown 		5 Approaches
0 Driveways
55.5448 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		2009 Converted from old traffic circle to roundabout. Previously controlled by circle ICD estimated from Google Maps linework.
Calais, ME
Washington Co.
United States 		US 1 / Border Station Connection
(45.16136, -67.29103) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
32.0012 		Other (At-Grade)
Single-Lane 		2008 ICD estimated from Google Maps linework.
Augusta, ME
Kennebec Co.
United States 		US 202 / Rte. 17 / Rte. 11 / Rte. 27
(44.31047, -69.77929) 		Rotary
Existing 		Unknown
Unknown 		5 Approaches
0 Driveways
71.7881 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		ICD estimated from Google Maps linework.
Bangor, ME
Penobscot Co.
United States 		Maine Ave. / Vermont Ave. / Texas Ave.
(44.81051, -68.80379) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
39.8234 		Other (At-Grade)
Single-Lane 		2007 ICD estimated from Google Maps linework.
West Gardiner, ME
Kennebec Co.
United States 		Rte 9-Rte 126 / I-95 NB Ramps / Service Plaza Dr.
(44.20896, -69.82823) 		Roundabout
Existing 		All-Way Yield
Unknown 		4 Approaches
0 Driveways
40.2365 		Freeway Ramps (Grade-Separated)
Single-Lane 		2015 ICD estimated from Google Maps linework.
Orono, ME
Penobscot Co.
United States 		Stillwater Ave. / Forest Ave.
(44.89217, -68.70227) 		Roundabout
Existing 		All-Way Yield
Unknown 		4 Approaches
0 Driveways
33.8442 		Other (At-Grade)
Single-Lane 		2013 ICD estimated from Google Maps linework.
Gorham, ME
Cumberland Co.
United States 		New Portland Rd. / Libby Ave. / Brackett Rd.
(43.67815, -70.41358) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
35.4148 		Other (At-Grade)
Single-Lane 		2011 ICD estimated from Google Maps linework.
Augusta, ME
Kennebec Co.
United States 		Rte 3 / I-95 NB Ramps
(44.35353, -69.78083) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
46.1156 		Freeway Ramps (Grade-Separated)
Multilane (2 Lane, unspecified) 		2013 ICD estimated from Google Maps linework.
Augusta, ME
Kennebec Co.
United States 		Rte 3 / I-95 SB Ramps / Old Belgrade Rd.
(44.35796, -69.78470) 		Roundabout
Existing 		All-Way Yield
Unknown 		4 Approaches
0 Driveways
46.1121 		Freeway Ramps (Grade-Separated)
Multilane (2 Lane, unspecified) 		2013 ICD estimated from Google Maps linework.
Bangor, ME
Penobscot Co.
United States 		Godfrey Blvd. / Maine Ave.
(44.81370, -68.81322) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
44.9047 		Other (At-Grade)
Single-Lane 		2012 ICD estimated from Google Maps linework.
Howland, ME
Penobscot Co.
United States 		Coffin St. / Lagrange Rd. / River Rd.
(45.23886, -68.66019) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
105.1237 		Other (At-Grade)
Single-Lane 		2012 Combined two one-way stop-controlled T-intersections and a new bridge alignment into a single-lane roundabout. ICD estimated from Google Maps linework.
Windham, ME
Cumberland Co.
United States 		River Rd. / Windham Center Rd.
(43.79915, -70.44025) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
18.9647 		Other (At-Grade)
Single-Lane 		2015 ICD estimated from Google Maps linework.
Bath, ME
Sagadahoc Co.
United States 		State Rd. / Congress Ave.
(43.90587, -69.83261) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
31.8381 		Other (At-Grade)
Single-Lane 		2011 ICD estimated from Google Maps linework.
Windham, ME
Cumberland Co.
United States 		US 202 / US 302
(43.80299, -70.40595) 		Rotary
Existing 		Unknown
None 		4 Approaches
0 Driveways
84.4736 		Other (At-Grade)
Single-Lane 		ICD estimated from Google Maps linework.
Blue Hill, ME
Hancock Co.
United States 		Beech Hill Rd. / Mines Rd. / Tenney Hill / South St.
(44.40825, -68.59763) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
32.4214 		Other (At-Grade)
Single-Lane 		2013 ICD estimated from Google Maps linework.
Waterville, ME
Kennebec Co.
United States 		Mayflower Hill Dr. / Campus Dr.
(44.56711, -69.65733) 		Roundabout
Existing 		All-Way Yield
Unknown 		3 Approaches
0 Driveways
42.6717 		Other (At-Grade)
Single-Lane 		2021 Replaced triangle of intersections. Diameter estimated. Bicycle facilities.
Sanford, ME
York Co.
United States 		William Oscar Emery Dr. / Gowen Park Dr. / Front St.
(43.44667, -70.78124) 		Other
Existing 		Other
Unknown 		4 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane 		Yield on circulatory roadway.
Westbrook, ME
Cumberland Co.
United States 		Rock Row / (parking)
(43.67594, -70.33160) 		Roundabout
Existing 		All-Way Yield
Unknown 		3 Approaches
0 Driveways
36.5760 		Other (At-Grade)
Single-Lane 		2020
Waterville, ME
Kennebec Co.
United States 		Washington St. / Campus Dr. / Rice Rips Rd.
(44.56576, -69.66692) 		Roundabout
Existing 		All-Way Yield
Unknown 		3 Approaches
0 Driveways
39.6240 		Other (At-Grade)
Single-Lane 		2022
Topsham, ME
Sagadahoc Co.
United States 		Topsham Fair Mall Rd. / (parking)
(43.93146, -69.98109) 		Roundabout
Existing 		All-Way Yield
Unknown 		4 Approaches
0 Driveways
36.5760 		Other (At-Grade)
Single-Lane 		2024 Unfinished leg to the north for future development.
Lexington Park, MD
St. Mary's Co.
United States 		FDR Blvd. / MacArthur Blvd.
(38.28609, -76.48549) 		Roundabout
Existing 		All-Way Yield
Unknown 		4 Approaches
0 Driveways
36.5760 		Other (At-Grade)
Single-Lane 		2023 https://thebaynet.com/new-section-of-fdr-boulevard-opened-to-the-public/
Lexington Park, MD
St. Mary's Co.
United States 		FDR Blvd. / (parking) / (future road)
(38.28732, -76.48888) 		Roundabout
Existing 		All-Way Yield
Unknown 		4 Approaches
0 Driveways
42.6720 		Other (At-Grade)
Single-Lane 		2023 South leg stubbed. https://thebaynet.com/new-section-of-fdr-boulevard-opened-to-the-public/.
Lexington Park, MD
St. Mary's Co.
United States 		FDR Blvd. / Buck Hewitt Rd.
(38.28398, -76.48121) 		Roundabout
Existing 		All-Way Yield
Unknown 		4 Approaches
0 Driveways
36.5760 		Other (At-Grade)
Single-Lane 		2023 https://thebaynet.com/new-section-of-fdr-boulevard-opened-to-the-public/
Silver Spring, MD
Montgomery Co.
United States 		Gist Ave. / Woodbury Dr.
(38.98948, -77.02294) 		Other
Existing 		All-Way Yield
Unknown 		4 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane 		No splitter islands.
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).
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.
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.
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
Chevy Chase, MD
Montgomery Co.
United States 		Rosemary Circle [Rosemary St. / Hillcrest Pl. / Stanford St.]
(38.97789, -77.08055) 		Other
Existing 		All-Way Stop
Unknown 		5 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane 		Parking along circulatory roadway.
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).
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
Travilah, MD
Montgomery Co.
United States 		Marwood Hill Dr. / Rivers Bend Ln.
(39.03022, -77.23432) 		Other
Existing 		Unknown
Unknown 		4 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane
Gaithersburg, MD
Montgomery Co.
United States 		Upshire Circle
(39.11353, -77.22397) 		Other
Existing 		Unknown
Unknown 		3 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Unknown
Medfield, MD
Baltimore City
United States 		Weldon Ave. / Elsa Terrace
(39.33803, -76.63881) 		Other
Existing 		Unknown
Unknown 		4 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane 		Parking along circulatory roadway; pedestrian access to central island.
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
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).
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.
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
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).
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.
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 		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 		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 		Moores Plains Blvd. / Bishopstone Terrace
(38.85575, -76.73096) 		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. / Buxton Pl.
(38.85826, -76.73014) 		Other
Existing 		Unknown
Unknown 		3 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane
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
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
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
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.
Silver Spring, MD
Montgomery Co.
United States 		Woodmoor Dr. / Lexington Dr.
(39.02215, -77.00818) 		Other
Existing 		All-Way Yield
Unknown 		4 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane 		No splitter islands.
Potomac, MD
Montgomery Co.
United States 		Old Seven Locks Rd. / Quarry Manor Terrace
(38.99371, -77.16028) 		Other
Existing 		Unknown
Unknown 		3 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane 		No splitter islands.
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
Prince Frederick, MD
Calvert Co.
United States 		MD 402 Dares Beach Rd. / Armory Rd.
(38.54877, -76.58590) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
39.6240 		Other (At-Grade)
Single-Lane 		2014
Prince Frederick, MD
Calvert Co.
United States 		Silverwood Ln. / English Oak Ln. / Running Brook Way
(38.54713, -76.58000) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
27.4320 		Other (At-Grade)
Single-Lane 		2007
Huntingtown, MD
Calvert Co.
United States 		Queensberry Dr. / Larkspur Ct.
(38.58450, -76.55968) 		Other
Existing 		Unknown
Unknown 		3 Approaches
4 Driveways
0.0000 		Other (At-Grade)
Single-Lane
Chesapeake Beach, MD
Calvert Co.
United States 		Harrison Blvd. / Sansbury Dr.
(38.69561, -76.55797) 		Roundabout
Existing 		All-Way Yield
Unknown 		3 Approaches
0 Driveways
24.3840 		Other (At-Grade)
Single-Lane 		1997 Year Completed estimated (1993-2004).
Owings, MD
Calvert Co.
United States 		Cross Point Dr. / Paulyn Dr.
(38.71532, -76.61335) 		Other
Existing 		Unknown
Unknown 		3 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane 		No splitter islands.
Owings, MD
Calvert Co.
United States 		Cross Point Dr. / Blue Sky Ct. / Bear Claw Ct.
(38.71468, -76.61554) 		Other
Existing 		Unknown
Unknown 		3 Approaches
4 Driveways
0.0000 		Other (At-Grade)
Single-Lane 		No splitter islands.
Owings, MD
Calvert Co.
United States 		Good Shepherd Way / Megatha Ln.
(38.71846, -76.62480) 		Other
Existing 		Uncontrolled
Unknown 		3 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane
Prince Frederick, MD
Calvert Co.
United States 		Skipjack Rd. / Ketch Rd.
(38.51100, -76.64140) 		Unknown
Existing 		Unknown
Unknown 		4 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Multilane (2 Lane, unspecified)
Huntingtown, MD
Calvert Co.
United States 		Huntsman Dr. / Horse Pen Run / Hardesty Rd.
(38.57357, -76.54875) 		Other
Existing 		All-Way Yield
Unknown 		4 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane 		No splitter islands.
Huntingtown, MD
Calvert Co.
United States 		Queensberry Dr. / Carlon Ct. / Duchess Ln. / (unknown)
(38.58381, -76.55492) 		Other
Existing 		All-Way Yield
Unknown 		5 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane 		No splitter islands.
Huntingtown, MD
Calvert Co.
United States 		Mairfield Ln. / Liberty Ln. / Fairwood Dr.
(38.60411, -76.58464) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
42.6720 		Other (At-Grade)
Single-Lane 		2014 Painted splitter islands added 2017.
Huntingtown, MD
Calvert Co.
United States 		Marley Run / Channel Ct. / Plainview Dr.
(38.60911, -76.59709) 		Other
Existing 		Uncontrolled
Unknown 		4 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane 		No splitter islands.
Huntingtown, MD
Calvert Co.
United States 		Barberry Dr. / Spears Rd. / Blueberry Ct.
(38.62290, -76.59347) 		Other
Existing 		All-Way Yield
Unknown 		4 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane 		Pedestrian access to central island.
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).
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
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.
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 		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
Rockville, MD
Montgomery Co.
United States 		Henderson Circle
(39.08800, -77.16702) 		Other
Existing 		Unknown
Unknown 		4 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane 		Pedestrian access to central island.
North Potomac, MD
Montgomery Co.
United States 		Bald Cypress Dr. / Willow Tree Dr. / Cherrydale Dr.
(39.08158, -77.20120) 		Other
Existing 		Unknown
Unknown 		4 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane
Rockville, MD
Montgomery Co.
United States 		Valley Dr. / Aqua Ln.
(39.07945, -77.20575) 		Other
Existing 		Unknown
Unknown 		3 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane
Gaithersburg, MD
Montgomery Co.
United States 		Parkview Ave. / Uptown St.
(39.15334, -77.22619) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
36.5760 		Other (At-Grade)
Single-Lane 		2012 Right-turn-only lane on northwest leg. Year Completed estimated (2011-2012).
Clarksburg, MD
Montgomery Co.
United States 		Granite Rock Rd. / Grand Elm St.
(39.24126, -77.26647) 		Other
Existing 		Unknown
Unknown 		4 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane 		No splitter islands.
Clarksburg, MD
Montgomery Co.
United States 		Saint Clair Rd. / Timber Creek Ln. / Brewers Tavern Terrace / (unknown)
(39.23680, -77.27531) 		Other
Existing 		Unknown
Unknown 		5 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane 		No splitter islands.
Bel Air, MD
Harford Co.
United States 		Thomas Run Rd. / Cross Campus Dr.
(39.56164, -76.28699) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
36.5760 		Other (At-Grade)
Single-Lane 		2012
Bel Air South, MD
Harford Co.
United States 		Laurel Bush Rd. / Falkland Dr. / Dowers Rd.
(39.48330, -76.29847) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
36.5760 		Other (At-Grade)
Single-Lane 		2017 Year Completed estimated (2013-2017).
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.
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
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
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).
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.
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.