Roundabouts Database Index

29411 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
Segeltorp, Stockholm County Huddinge Sweden	Häradsvägen / Gamla Södertäljevägen (59.27967, 17.94277)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 32.3364	Other (At-Grade) Multilane (2 Lane, unspecified)		ICD estimated from Google Maps linework.
Segeltorp, Stockholm County Huddinge Sweden	Bredängsvägen / Vantörsvägen / E4 EB Ramps (59.28605, 17.94959)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 40.2604	Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified)		ICD estimated from Google Maps linework.
Segeltorp, Stockholm County Huddinge Sweden	Häradsvägen / Mälarvägen / (parking lot) (59.28443, 17.94703)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 24.4014	Other (At-Grade) Multilane (2 Lane, unspecified)		ICD estimated from Google Maps linework.
Skogås, Stockholm County Huddinge Sweden	Gamla Nynäsvägen / Lunnarevägen / Stockvägen (59.20964, 18.14458)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 23.2322	Other (At-Grade) Single-Lane		ICD estimated from Google Maps linework.
Skogås, Stockholm County Huddinge Sweden	Gamla Nynäsvägen / Lissmavägen (59.19927, 18.13803)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 26.9087	Other (At-Grade) Single-Lane		ICD estimated from Google Maps linework.
Skogås, Stockholm County Huddinge Sweden	Gamla Nynäsvägen / Vallmyravägen / Centrumvägen (59.20625, 18.14020)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 20.7888	Other (At-Grade) Single-Lane		ICD estimated from Google Maps linework.
Skogås, Stockholm County Huddinge Sweden	Gamla Nynäsvägen / Österleden (59.21835, 18.14105)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 45.8414	Other (At-Grade) Single-Lane		ICD estimated from Google Maps linework.
Skogås, Stockholm County Huddinge Sweden	Lissmavägen / Rte 73 NB Ramps (59.20043, 18.13459)	Roundabout Existing	All-Way Yield Unknown	3 Approaches 0 Driveways 38.5270	Freeway Ramps (Grade-Separated) Single-Lane		ICD estimated from Google Maps linework.
Trångsund, Stockholm County Huddinge Sweden	Trångsundsvägen / (unknown) (59.22768, 18.13383)	Roundabout Existing	All-Way Yield Unknown	3 Approaches 0 Driveways 20.1647	Other (At-Grade) Single-Lane		ICD estimated from Google Maps linework.
Trångsund, Stockholm County Huddinge Sweden	Rte 271 / Gamla Nynäsvägen / Trångsunds Trafikplats / Storvretsvägen (59.22655, 18.13267)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 36.6643	Other (At-Grade) Multilane (2 Lane, unspecified)		ICD estimated from Google Maps linework.
Skogås, Stockholm County Huddinge Sweden	Svarvarvägen / Nyckelvägen (59.20093, 18.12700)	Roundabout Existing	All-Way Yield Unknown	3 Approaches 0 Driveways 20.7920	Other (At-Grade) Single-Lane		ICD estimated from Google Maps linework.
Skogås, Stockholm County Huddinge Sweden	Lissmavägen / Svarvarvägen (59.20011, 18.12772)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 36.6927	Other (At-Grade) Multilane (2 Lane, unspecified)		ICD estimated from Google Maps linework.
Skogås, Stockholm County Huddinge Sweden	Lissmavägen / Truckvägen (59.19880, 18.12450)	Roundabout Existing	All-Way Yield Unknown	3 Approaches 0 Driveways 26.9090	Other (At-Grade) Multilane (2 Lane, unspecified)		ICD estimated from Google Maps linework.
Sjödalen, Stockholm County Huddinge Sweden	Lännavägen / Kommunalvägen (59.24083, 17.99439)	Roundabout Existing	All-Way Yield Unknown	3 Approaches 0 Driveways 25.0435	Other (At-Grade) Single-Lane		ICD estimated from Google Maps linework.
Snättringe, Stockholm County Huddinge Sweden	Stambanevägen / Häradsvägen / Stuvstaleden (59.25373, 17.99482)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 27.4763	Other (At-Grade) Single-Lane		ICD estimated from Google Maps linework.
Snättringe, Stockholm County Huddinge Sweden	Stambanevägen / Stationsvägen (59.25294, 17.99528)	Roundabout Existing	All-Way Yield Unknown	3 Approaches 0 Driveways 14.6544	Other (At-Grade) Single-lane w/ Traversable Central Island		ICD estimated from Google Maps linework.
Stuvsta, Stockholm County Huddinge Sweden	Lännavägen / Gymnasievägen (59.24153, 17.99536)	Roundabout Existing	All-Way Yield Unknown	3 Approaches 0 Driveways 26.8754	Other (At-Grade) Single-Lane		ICD estimated from Google Maps linework.
Stuvsta, Stockholm County Huddinge Sweden	Stationsvägen / Stuvstavägen (59.25002, 17.99854)	Roundabout Existing	All-Way Yield Unknown	3 Approaches 0 Driveways 15.8769	Other (At-Grade) Single-Lane		ICD estimated from Google Maps linework.
Sjödalen, Stockholm County Huddinge Sweden	Rte 259 / Trollskogsvägen (59.22008, 18.00909)	Roundabout Existing	All-Way Yield Unknown	3 Approaches 0 Driveways 22.0028	Other (At-Grade) Single-Lane		ICD estimated from Google Maps linework.
Sjödalen, Stockholm County Huddinge Sweden	Rte 259 / Balingsnäsvägen (59.22117, 18.00765)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 24.4467	Other (At-Grade) Single-Lane		ICD estimated from Google Maps linework.
Park Rapids, MN Hubbard Co. United States	US 71 (Park Ave.) / Industrial Park Rd. / Crocus Hill St. (46.90736, -95.05838)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane	2019	http://www.dot.state.mn.us/d2/projects/2019/hwy71-parkrapids/index.html
Huaquillas, El Oro Huaquillas Ecuador	Carretera Transversal / Avenida de la Republica (-3.49669, -80.20829)	Other Existing	Other Unknown	3 Approaches 0 Driveways	Other (At-Grade) Multilane (3+ Lane)		Circulatory roadway yield to entering traffic.
Huaquillas, El Oro Huaquillas Ecuador	Avenida de la Republica / Martha Bucaram (-3.48451, -80.21505)	Unknown Existing	Unknown Unknown	4 Approaches 0 Driveways	Other (At-Grade) Unknown
Huaquillas, El Oro Huaquillas Ecuador	Martha Bucaram / Velasco Ibarra (-3.47772, -80.20904)	Unknown Existing	Unknown Unknown	5 Approaches 0 Driveways	Other (At-Grade) Unknown
Hradec Králové, Hradec Králové Hradec Králové Czechia	třída Edvarda Beneše / Palachova / Štefánikova (50.19044, 15.84140)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways	Other (At-Grade) Single-Lane		Elliptical shaped.
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.
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
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
Elkridge, MD Howard Co. United States	Toomey Ln. / Clements Ln. (39.20950, -76.71291)	Other Existing	Unknown Unknown	2 Approaches 4 Driveways 0.0000	Other (At-Grade) Unknown		No splitter islands.
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.
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
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
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).
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.
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
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).
Kokomo, IN Howard Co. United States	Touby Pike / CR 250N (40.51308, -86.09981)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane	2023	Provides access to Stellantis and Samsung SDI battery plant being built at this location
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
Glenelg, MD Howard Co. United States	Triadelphia Rd. / Ten Oaks Rd. (39.26399, -76.98621)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 32.0040	Other (At-Grade) Single-Lane	2000	Year Completed estimated (1992-2002).
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).
Kokomo, IN Howard Co. United States	Smith Rd. (CR 300N) / Sparks Rd. (CR 50E) (40.52021, -86.11715)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane	2024
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).
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).
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
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).
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
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
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).
Glenelg, MD Howard Co. United States	Pfefferkorn Rd. / Fox Stream Way / Old Rover Rd. (39.29067, -76.99226)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 28.9560	Other (At-Grade) Single-Lane	2005	Year Completed estimated (2004-2005).
Cooksville, MD Howard Co. United States	Long Corner Rd. / Penn Shop Rd. (39.33938, -77.15284)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 28.9560	Other (At-Grade) Single-Lane	2005	Year Completed estimated (1988-2005).
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
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.
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
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.
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
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
Kokomo, IN Howard Co. United States	W Markland Ave. / Park Ave. (40.47630, -86.14763)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 39.9738	Other (At-Grade) Multilane (2 Lane, unspecified)	2017	https://www.kokomotribune.com/news/local_news/updated-roundabout-at-markland-and-park-open-almost-complete/article_99ddf954-d940-11e7-8f84-b30e25030c35.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. (MD 932B) / Ten Oaks Rd. (MD 932C) (39.27315, -76.98805)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 37.9074	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.
Elkridge, MD Howard Co. United States	Elkridge Crossing Way / Doctor Patel Dr. (39.21091, -76.72512)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 31.4634	Other (At-Grade) Single-Lane	2007	East leg stubbed for future. ICD estimated from Google Maps linework.
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.
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.
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.
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.
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.
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
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.
Jessup, MD Howard Co. United States	Canine Rd. / MD 32 EB Ramps (39.10101, -76.76953)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 38.0005	Freeway Ramps (Grade-Separated) Single-Lane	2001	ICD estimated from Google Maps linework.
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.
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.
Lisbon, MD Howard Co. United States	MD 94 / Old Frederick Rd. (Lisbon North) (39.34810, -77.06930)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 26.7839	Other (At-Grade) Single-Lane	1999	ICD estimated from Google Maps linework.
Ellicott City, MD Howard Co. United States	MD 103 / MD 100 WB Ramps (39.20846, -76.78294)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 33.3154	Freeway Ramps (Grade-Separated) Single-Lane	1998	Opened November 1998. ICD estimated from Google Maps linework.
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.
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	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
Lisbon, MD Howard Co. United States	MD 94 / MD 144 (39.33700, -77.07360)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 30.4800	Other (At-Grade) Single-Lane	1993	First roundabout in Maryland. Built initially as temporary, made permanent after one month.
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.
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.
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.
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.
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.
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.
Kokomo, IN Howard Co. United States	Center Rd. / Webster St. (40.43313, -86.13661)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 39.9995	Other (At-Grade) Single-Lane	2006	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.
Dothan, AL Houston Co. United States	Campbellton Hwy. / Southgate Rd. (31.18216, -85.40940)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 39.6240	Other (At-Grade) Single-Lane	2016
Dothan, AL Houston Co. United States	N Shady Ln. / Whatley Dr. (31.24327, -85.45203)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 23.4857	Other (At-Grade) Single-Lane	2001	Year completed estimated (1998-2003). ICD estimated from Google Maps linework.
Dothan, AL Houston Co. United States	Recreation Rd. / Northcutt Dr. (31.24127, -85.44014)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 22.4651	Other (At-Grade) Single-Lane	2007	ICD estimated from Google Maps linework.
Dothan, AL Houston Co. United States	Northcutt Dr. / Deerpath Rd. (31.23965, -85.44308)	Other Existing	All-Way Yield None	4 Approaches 0 Driveways 26.5501	Other (At-Grade) Single-Lane	2007	ICD estimated from Google Maps linework.
Warner Robins, GA Houston Co. United States	Martin Luther King Jr Blvd. / Wellborn Rd. (32.61319, -83.60350)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 34.2046	Other (At-Grade) Single-Lane	2013	ICD estimated from Google Maps linework.