Roundabouts Database Index

29361 Results

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

City, State County Country	Intersection (Lat, Lng)	Type Status	Control Type / Other Control Type	Approaches / Driveways / ICD (m)	Functional Class / LaneType	Year Completed	Comments
Winnipeg, MB Manitoba Canada	Edward Turner Dr. / Des Hivernants Blvd. (49.83883, -97.04045)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 33.8919	Other (At-Grade) Single-Lane	2012	Year Completed estimated (2011-2012). ICD estimated from Google Maps linework.
Winnipeg, MB Manitoba Canada	Lakewood Blvd. / Beaverhill Blvd. (49.84393, -97.07519)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 26.1864	Other (At-Grade) Single-Lane	2008	Year Completed estimated (2005-2011). ICD estimated from Google Maps linework.
Winnipeg, MB Manitoba Canada	Bison Dr. / Centre St. (49.79465, -97.19792)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 46.2584	Other (At-Grade) Multilane (2 Lane, unspecified)	2014	ICD estimated from Google Maps linework.
Winnipeg, MB Manitoba Canada	Centre St. / Kenaston Blvd. NB Off-Ramp (49.78962, -97.19576)	Roundabout Existing	All-Way Yield None	2 Approaches 0 Driveways 33.9264	Freeway Ramps (Grade-Separated) Single-Lane	2013	ICD estimated from Google Maps linework.
Winnipeg, MB Manitoba Canada	Centre St. / S Town Rd. (49.79114, -97.19689)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 37.0094	Other (At-Grade) Single-Lane	2013	ICD estimated from Google Maps linework.
Winnipeg, MB Manitoba Canada	Centre St. / N Town Rd. (49.79857, -97.19712)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 33.9201	Other (At-Grade) Single-Lane	2012	Year Completed estimated (2011-2012). ICD estimated from Google Maps linework.
Winnipeg, MB Manitoba Canada	Centre St. / (parking lot) / Kenaston Blvd. Off-ramp (49.79957, -97.19700)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 35.4612	Freeway Ramps (Grade-Separated) Single-Lane	2012	Year Completed estimated (2011-2012). ICD estimated from Google Maps linework.
Winnipeg, MB Manitoba Canada	N Town Rd. / Bridgeland Dr. (49.80237, -97.18799)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 31.6049	Other (At-Grade) Single-Lane	2009	Year Completed estimated (2005-2011). ICD estimated from Google Maps linework.
Winnipeg, MB Manitoba Canada	N Town Rd. / Ancaster Gate / Bridgeland Dr. S (49.80158, -97.18416)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 39.3140	Other (At-Grade) Single-Lane	2010	Year Completed estimated (2005-2011). ICD estimated from Google Maps linework.
Winnipeg, MB Manitoba Canada	N Town Rd. / Bridge Lake Dr. / Pebble Creek Gate (49.80053, -97.20173)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 30.8352	Other (At-Grade) Single-Lane	2012	Year Completed estimated (2011-2012). ICD estimated from Google Maps linework.
Winnipeg, MB Manitoba Canada	Bison Dr. / Bridge Lake Dr. (49.79236, -97.20500)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 50.8867	Other (At-Grade) Single-Lane	2012	ICD estimated from Google Maps linework.
Winnipeg, MB Manitoba Canada	Bison Dr. / Appleford Gate (49.79085, -97.21023)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 60.1407	Other (At-Grade) Single-Lane	2013	Year Completed estimated (2013-2014). ICD estimated from Google Maps linework.
Winnipeg, MB Manitoba Canada	Willow Creek Rd. / Landover Dr. (49.78426, -97.20536)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 33.1590	Other (At-Grade) Single-Lane	2015	ICD estimated from Google Maps linework.
Winnipeg, MB Manitoba Canada	Eaglewood Dr. / Lark Ridge Way / Skyline (49.78120, -97.19773)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 30.8475	Other (At-Grade) Single-Lane	2015	Year Completed estimated (2015-2016). ICD estimated from Google Maps linework.
Brandon, MB Manitoba Canada	Maryland Ave. / Magnolia Dr. (49.81997, -99.94982)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 40.0697	Other (At-Grade) Single-Lane	2001	Year Completed estimated (before 2004). ICD estimated from Google Maps linework.
Winnipeg, MB Manitoba Canada	Bridgelane Dr. / Appletree Crescent (49.81045, -97.17762)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 36.2239	Other (At-Grade) Single-Lane	2008	Year Completed estimated (2005-2011). ICD estimated from Google Maps linework.
Winnipeg, MB Manitoba Canada	Bridge Lake Dr. / Eagleview Rd. (49.79407, -97.20716)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 31.6103	Other (At-Grade) Single-Lane	2012	ICD estimated from Google Maps linework.
Winnipeg, MB Manitoba Canada	Bridge Lake Dr. / S Town Rd. (49.78875, -97.20092)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 35.4691	Other (At-Grade) Single-Lane	2013	ICD estimated from Google Maps linework.
Winnipeg, MB Manitoba Canada	Bridge Lake Dr. / Rowntree Ave. / Eaglewood Dr. (49.78298, -97.19971)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 33.9310	Other (At-Grade) Single-Lane	2016	ICD estimated from Google Maps linework.
Winnipeg, MB Manitoba Canada	Landover Dr. / Silver Creek Rd. / Castlebrook Dr. (49.78097, -97.20826)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 31.6189	Other (At-Grade) Single-Lane	2016	Year Completed estimated (2015-2016). ICD estimated from Google Maps linework.
Winnipeg, MB Manitoba Canada	Castlebrook Dr. / (unknown) (49.77867, -97.20645)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways	Other (At-Grade) Single-Lane	2018	Year Completed estimated (2017-2019).
Winnipeg, MB Manitoba Canada	Waverley St. / Eaglewood Dr. (49.77750, -97.19488)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 46.2748	Other (At-Grade) Single-Lane	2015	Year Completed estimated (2015-2016). ICD estimated from Google Maps linework.
Winnipeg, MB Manitoba Canada	Grassie Blvd. / Molson St. (49.92254, -97.05339)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 39.2157	Other (At-Grade) Single-Lane	2012	ICD estimated from Google Maps linework.
Winnipeg, MB Manitoba Canada	Sturgeon Rd. / Murray Park Rd. / Silver Ave. (49.89482, -97.27765)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 48.4708	Other (At-Grade) Single-Lane	2015	ICD estimated from Google Maps linework.
Winnipeg, MB Manitoba Canada	Gateway Rd. / Sun Valley Dr. (49.94134, -97.05546)	Roundabout Existing	All-Way Yield Unknown	3 Approaches 0 Driveways 33.0513	Other (At-Grade) Single-Lane	2015	ICD estimated from Google Maps linework.
Cumberland, MD Allegany Co. United States	Willow Brook Rd. / (Western Maryland Regional Medical Center - south entrance) (39.64659, -78.73184)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 36.7851	Other (At-Grade) Single-Lane	2008	Year Completed estimated (2008-2009). ICD estimated from Google Maps linework.
Cumberland, MD Allegany Co. United States	Willow Brook Rd. / (Western Maryland Regional Medical Center - north entrance) (39.64875, -78.73164)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 34.0251	Other (At-Grade) Single-Lane	2008	Year Completed estimated (2008-2009). 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.
Hagerstown, MD Washington Co. United States	Frederick St. / Funkstown Bypass (39.61505, -77.71147)	Roundabout Existing	All-Way Yield Unknown	3 Approaches 0 Driveways 40.4820	Other (At-Grade) Unknown	2018	ICD estimated from Google Maps linework.
Hagerstown, MD Washington Co. United States	E Oak Ridge Dr. / Villa Ridge Dr. / Southern Blvd. (Funkstown Bypass) (39.61177, -77.72042)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 48.7647	Other (At-Grade) Single-Lane	2018	ICD estimated from Google Maps linework.
Bel Air South, MD Harford Co. United States	S Tollgate Rd. / Plumtree Rd. (39.50070, -76.33349)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 31.3332	Other (At-Grade) Single-Lane	2016	ICD estimated from Google Maps linework.
Bel Air South, MD Harford Co. United States	S Tollgate Rd. / W Ring Factory Rd. (39.50873, -76.34550)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 28.5652	Other (At-Grade) Single-Lane	2006	Year Completed estimated (2005-2007). ICD estimated from Google Maps linework.
Bel Air South, MD Harford Co. United States	Abingdon Rd. / Dunbarton Dr. / Box Hill S Pkwy. (39.47491, -76.30092)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 25.8134	Other (At-Grade) Single-Lane	2006	Year Completed estimated (2005-2007). ICD estimated from Google Maps linework.
Bel Air North, MD Harford Co. United States	Moores Mill Rd. / Southampton Rd. (39.54847, -76.33536)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 27.6279	Other (At-Grade) Single-Lane	2010	ICD estimated from Google Maps linework.
Point of Rocks, MD Frederick Co. United States	US 15 / Point of Rocks Rd. (39.28643, -77.53096)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 47.1443	Other (At-Grade) Multilane (2 Lane, unspecified)	2008	ICD estimated from Google Maps linework.
Hickory, MD Harford Co. United States	Water Tower Way / Granary Rd. (39.56845, -76.35713)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 22.0960	Other (At-Grade) Single-Lane	2017	ICD estimated from Google Maps linework.
Cambridge, MD Dorchester Co. United States	MD 16 (Church Creek Rd.) / Woods Rd. (38.54624, -76.06411)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 37.3636	Other (At-Grade) Single-Lane	2017	https://www.myeasternshoremd.com/dorchester_star/news/roundabout-opens-at-route-and-woods-road/article_b39ae088-8f81-51a4-8dc8-94e149da66e8.html ICD estimated from Google Maps linework.
West Friendship, MD Howard Co. United States	Burntwoods Rd. / Andrea Dr. / MD 32 NB Ramps (39.27321, -76.98627)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 35.1338	Freeway Ramps (Grade-Separated) Single-Lane	2008	ICD estimated from Google Maps linework.
Glenelg, MD Howard Co. United States	Burntwoods Rd. / Ten Oaks Rd. (39.27315, -76.98805)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 37.9075	Other (At-Grade) Single-Lane	2008	ICD estimated from Google Maps linework.
Glenelg, MD Howard Co. United States	Ten Oaks Rd. / Pfefferkorn Rd. / MD 32 SB Ramps (39.27615, -76.98641)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 32.3587	Freeway Ramps (Grade-Separated) Single-Lane	2008	ICD estimated from Google Maps linework.
Glenwood, MD Howard Co. United States	Burntwoods Rd. / Sharp Rd. (39.27702, -77.00369)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 29.5847	Other (At-Grade) Single-Lane	2006	Adjacent to Glenelg High School. ICD estimated from Google Maps linework.
Kingsville, MD Baltimore Co. United States	MD 147 (Harford Rd.) / Glen Arm Rd. / Mt Vista Rd. (39.46045, -76.45652)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 35.0397	Other (At-Grade) Single-Lane	2018	https://www.baltimoresun.com/maryland/harford/aegis/ph-ag-harford-road-roundabout-20180102-story.html 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.
Hagerstown, MD Washington Co. United States	MD 144 (W Washington St.) / Western Maryland Pkwy. (39.64883, -77.75049)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 36.7839	Other (At-Grade) Single-Lane	2015	https://www.wcbcradio.com/?archiv=new-roundabout-near-hagerstown ICD estimated from Google Maps linework.
Princess Anne, MD Somerset Co. United States	MD 822 (UMES Blvd.-Hickory Rd.) / MD 675 (Somerset Ave.) (38.21930, -75.69592)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 38.4712	Other (At-Grade) Single-Lane	2015	https://www.delmarvanow.com/story/news/local/maryland/2014/11/24/roundabout-umes-boulevard/70053440/ ICD estimated from Google Maps linework.
Aberdeen, MD Harford Co. United States	MD 7 (Philadelphia Rd.) / Seven Trails Dr. / (unknown) (39.48874, -76.22404)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 46.0861	Other (At-Grade) Multilane (2 Lane, unspecified)	2017	ICD estimated from Google Maps linework.
Appleton, MD Cecil Co. United States	MD 273 (Telegraph Rd.) / Appleton Rd. (39.69858, -75.81417)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 36.7574	Other (At-Grade) Single-Lane	2016	https://www.cecildaily.com/business/construction-to-begin-on-two-roundabouts/article_a86c04d1-1da8-5e3a-927a-8f05b09e6c57.html ICD estimated from Google Maps linework.
Elkton, MD Cecil Co. United States	MD 281 (Red Hill Rd.) / Muddy Ln. / Kemp Ln. (39.61811, -75.79733)	Roundabout Existing	All-Way Yield None	3 Approaches 1 Driveways 37.7202	Other (At-Grade) Single-Lane	2018	Year Completed estimated (2017-2018) (streetview). ICD estimated from Google Maps linework.
Gaithersburg, MD Montgomery Co. United States	Victory Farm Dr. / Girard St. (39.14648, -77.18493)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 25.9348	Other (At-Grade) Multilane (2 Lane, unspecified)	2006	Year Completed estimated (2005-2006). ICD estimated from Google Maps linework.
Clarksburg, MD Montgomery Co. United States	Clarksburg Rd. (MD 121) / (outlet mall entrance) (39.22844, -77.28869)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 49.9588	Other (At-Grade) Multilane (2 Lane, unspecified)	2015	ICD estimated from Google Maps linework.
Clarksburg, MD Montgomery Co. United States	Clarksburg Rd. (MD 121) / Cabin Branch Ave. (39.22689, -77.29051)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 46.2592	Other (At-Grade) Multilane (2 Lane, unspecified)	2015	ICD estimated from Google Maps linework.
Centreville, MD Queen Anne's Co. United States	MD 304 (Ruthsburg Rd.) / US 301 NB Ramps (39.02731, -76.02541)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 37.1124	Freeway Ramps (Grade-Separated) Single-Lane	2017	https://www.calvertbeacon.com/opening-new-us-301md-304-interchange/ ICD estimated from Google Maps linework.
Centreville, MD Queen Anne's Co. United States	MD 304 (Ruthsburg Rd.) / US 301 SB Ramps / Tidewater Dr. (39.02813, -76.02920)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 35.2563	Freeway Ramps (Grade-Separated) Single-Lane	2017	https://www.calvertbeacon.com/opening-new-us-301md-304-interchange/ ICD estimated from Google Maps linework.
North East, MD Cecil Co. United States	MD 273 (Telegraph Rd.) / Blue Ball Rd. (39.70019, -75.93167)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 33.9998	Other (At-Grade) Single-Lane	2019	ICD estimated from Google Maps linework.
Aberdeen, MD Harford Co. United States	Beards Hill Rd. / Middleton Rd. / Olympic Square (39.52719, -76.17773)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 27.6364	Other (At-Grade) Single-Lane	2019	https://www.baltimoresun.com/maryland/harford/aegis/cng-ag-aberdeen-roundabout-opens-0927-20190926-2itkrrn43jctnkw2ch6et7ky7m-story.html ICD estimated from Google Maps linework.
Aberdeen, MD Harford Co. United States	Old Philadelphia Rd. (MD 7) / Perryman Rd. (MD 159) (39.48791, -76.19155)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 37.7911	Other (At-Grade) Single-Lane	2019	https://www.facebook.com/pg/Harford-County-Roundabouts-308793279204833/posts/ ICD estimated from Google Maps linework.
Frederick, MD Frederick Co. United States	Jefferson Pike (MD 180) / Mt Zion Rd. (39.38286, -77.48054)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 36.9250	Other (At-Grade) Single-Lane	2019	Opened August 2019. https://www.fredericknewspost.com/news/politics_and_government/public_safety/md-roundabout-opened/article_e67c26f7-ac5c-5931-b2e0-9e68faaa77d7.html ICD estimated from Google Maps linework.
Bethesda, MD Montgomery Co. United States	Bradmoor Dr. / Roosevelt St. (38.99427, -77.11925)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 21.3360	Other (At-Grade) Single-Lane	2017	Year Completed estimated (2016-2018).
Frederick, MD Frederick Co. United States	Ballenger Creek Pike (MD 351) / Elmer Derr Rd. / English Muffin Way (39.36625, -77.45071)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 37.8571	Other (At-Grade) Single-Lane	2012	Year Completed estimated (2011-2012). ICD estimated from Google Maps linework.
Knoxville, MD Frederick Co. United States	Burkittsville Rd. (MD 17) / US 340 WB Ramps (39.34056, -77.64052)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 37.8710	Freeway Ramps (Grade-Separated) Single-Lane	2010	Year Completed estimated (2009-2011). ICD estimated from Google Maps linework.
Lusby, MD Calvert Co. United States	HG Trueman Rd. (MD 765) / / Southern Connector Blvd. (38.36413, -76.44936)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 49.6319	Other (At-Grade) Multilane (2 Lane, unspecified)	2008	Looks like it's being finished up in Oct 2008 on streetview. ICD estimated from Google Maps linework.
Lusby, MD Calvert Co. United States	Rousby Hall Rd. (MD 760) / Southern Connector Blvd. / Olivet Rd. (38.35629, -76.43310)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 36.5256	Other (At-Grade) Single-Lane	2006	Year Completed estimated (2005-2007). ICD estimated from Google Maps linework.
Frederick, MD Frederick Co. United States	Fingerboard Rd. (MD 80) / I-270 SB Ramps (39.32289, -77.35845)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 47.1198	Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified)	2009	ICD estimated from Google Maps linework.
Sykesville, MD Carroll Co. United States	Old Washington Rd. (MD 97) / W Old Liberty Rd. (39.42906, -77.00755)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 34.1330	Other (At-Grade) Single-Lane	2000	Year Completed estimated (1995-2005). ICD estimated from Google Maps linework.
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.
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.
Clarksburg, MD Montgomery Co. United States	Little Seneca Pkwy. / Snowden Farm Pkwy. (39.22989, -77.25280)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 28.6795	Other (At-Grade) Multilane (2 Lane, unspecified)	2012	Year Completed estimated (2011-2013). ICD estimated from Google Maps linework.
Clarksburg, MD Montgomery Co. United States	Snowden Farm Pkwy. / Winding Woods Way (39.22604, -77.24727)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 40.7086	Other (At-Grade) Multilane (2 Lane, unspecified)	2012	Year Completed estimated (2011-2013). ICD estimated from Google Maps linework.
Clarksburg, MD Montgomery Co. United States	Little Seneca Pkwy. / Meadow Mist Rd. (39.23154, -77.24309)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 30.5290	Other (At-Grade) Single-Lane	2011	ICD estimated from Google Maps linework.
Abingdon, MD Harford Co. United States	Tewkesbury Rd. / Shrewsbury Rd. (39.45775, -76.27273)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 49.7952	Other (At-Grade) Single-Lane	2003	Year Completed estimated (2003-2004). http://onlinepubs.trb.org/Onlinepubs/circulars/ec083/68_Statmeyerpaper.pdf 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	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.
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	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.
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	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.
Oxon Hill, MD Prince Georges Co. United States	National Harbor Blvd. / American Way (38.78227, -77.01099)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 30.7236	Other (At-Grade) Multilane (2 Lane, unspecified)	2009	ICD estimated from Google Maps linework.
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.
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.
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.
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.
Adamstown, MD Frederick Co. United States	Mountville Rd. / Adams Common Dr. (39.30643, -77.47158)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 28.6482	Other (At-Grade) Single-Lane	2007	ICD estimated from Google Maps linework.
Glen Burnie, MD Anne Arundel Co. United States	George Clausse Blvd. / (parking access) (39.14768, -76.64935)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 33.3442	Other (At-Grade) Single-Lane	2008	RT lanes on eastbound and northbound approaches. Part of shopping center. ICD estimated from Google Maps linework.
Forest Hill, MD Harford Co. United States	MD 23 / Commerce Rd. (39.57390, -76.37067)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 38.1000	Other (At-Grade) Single-Lane	2008	On August 9, 2008 a new roundabout opened on Maryland Route 23 and an extended Commerce Drive in Forest Hill (Harford County), Maryland. It was built by a private developer to improve access to the Forest Hill Industrial Park by using Route 23, a limited access highway, rather than the current access road to Commerce Drive, Jarrettsville Road, which is primarily a residential route.
Fruitland, MD Wicomico Co. United States	Cedar Ln. / Division St. (38.32094, -75.61021)	Roundabout Existing	Unknown Unknown	4 Approaches 0 Driveways 29.0473	Other (At-Grade) Single-Lane	2007	ICD estimated from Google Maps linework.
Saint Leonard, MD Calvert Co. United States	Calvert Beach Rd. / Saint Leonard Rd. (38.47316, -76.50607)	Roundabout Existing	Unknown Unknown	4 Approaches 0 Driveways 25.2461	Other (At-Grade) Single-Lane	2002	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.
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.
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.
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.
Deale, MD Anne Arundel Co. United States	MD 256 / MD 258 (38.79327, -76.54586)	Roundabout Existing	Unknown Unknown	3 Approaches 0 Driveways 34.4423	Other (At-Grade) Single-Lane	2006	ICD estimated from Google Maps linework.
Bel Air, MD Harford Co. United States	Constant Friendship Blvd. / BJ's (39.45546, -76.31870)	Roundabout Existing	Unknown Unknown	3 Approaches 0 Driveways 29.5092	Other (At-Grade) Single-Lane	1995	Functional Class: Local 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.
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
Lexington Park, MD St. Marys Co. United States	Tate Rd. / Shaw Rd. (38.26955, -76.42012)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 31.8809	Other (At-Grade) Single-Lane	2005	Y-shaped with right-turn bypass lanes. 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.
Stevensville, MD Queen Annes Co. United States	Thompson Creek Rd. / US 50 EB Ramps (38.97599, -76.31046)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 16.7127	Freeway Ramps (Grade-Separated) Single-lane w/ Traversable Central Island	2007	Mini-roundabout. ICD estimated from Google Maps linework.
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.
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 66.6797	Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified)	2002	ICD estimated from Google Maps linework.