Roundabouts Database Index

29554 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
Cypress, TX Harris Co. United States	Larrison Creek Cir. / Mount Hope Dr. (29.94132, -95.74071)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 33.5277	Other (At-Grade) Single-Lane	2015	One-stage pedestrian crossings.
Cypress, TX Harris Co. United States	Himley Dr. / Glidden Stream Ln. (29.94613, -95.73918)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 33.5280	Other (At-Grade) Single-Lane	2015	One-stage pedestrian crossings.
Cypress, TX Harris Co. United States	Avion Village Dr. (29.94640, -95.73826)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 33.5280	Other (At-Grade) Single-Lane	2015	One-stage pedestrian crossings.
Towne Lake, TX Harris Co. United States	Cornerstone Arbor Dr. / Mayberry Heights Dr. (29.93313, -95.70651)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 54.8640	Other (At-Grade) Single-Lane	2014
Towne Lake, TX Harris Co. United States	Sunset Shores Ln. (29.92722, -95.69052)	Other Existing	Uncontrolled Unknown	2 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane		Circle for U-turns in front of gated entry.
Houston, TX Harris Co. United States	Town and Country Blvd. / Town and Country Way (29.78217, -95.56067)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 35.0520	Other (At-Grade) Single-Lane	2018	Year Completed estimated (2017-2018).
Houston, TX Harris Co. United States	Washington Ave. / Westcott St. / Arnot St. (29.77107, -95.42352)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 54.8637	Other (At-Grade) Multilane (2 Lane, unspecified)	2005	http://www.chron.com/disp/story.mpl/metropolitan/moveit/4660312.html
Houston, TX Harris Co. United States	Main St. / Montrose Blvd. (29.72404, -95.39096)	Other Existing	Other Unknown	0 Approaches 0 Driveways 97.5360	Other (At-Grade) Multilane (3+ Lane)	1916	Traffic Circle surveyed as part of 1916 plan for Hermann Park. Paved 1924. Some stop controlled, some free flow movements.
Houston, TX Harris Co. United States	Hermann Circle (29.72156, -95.39095)	Other Existing	Other Unknown	0 Approaches 0 Driveways 106.6800	Other (At-Grade) Multilane (3+ Lane)	1916	Traffic Circle surveyed as part of 1916 plan for Hermann Park. Paved 1924. Some stop controlled, some free flow movements.
Houston, TX Harris Co. United States	Meadowglen Ln. / Seagler Rd. (29.73162, -95.55486)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 60.9600	Other (At-Grade) Single-Lane	2005
Pasadena, TX Harris Co. United States	Washburn Tunnel / Richey St. / Red Bluff Rd. (29.71813, -95.21172)	Rotary Existing	Unknown Unknown	0 Approaches 0 Driveways 140.2080	Other (At-Grade) Unknown	1950	Southeast approach was intended to be an extension of N Main Street, but was never completed.
Pasadena, TX Harris Co. United States	Washburn Tunnel / Clinton Dr. (29.73277, -95.21194)	Rotary Existing	Unknown Unknown	0 Approaches 0 Driveways 140.2080	Other (At-Grade) Unknown	1950	.
Webster, TX Harris Co. United States	Water St. / Stone Crossing / Marina View Dr. (29.53215, -95.10392)	Other Existing	All-Way Yield None	3 Approaches 0 Driveways 64.0080	Other (At-Grade) Multilane (2 Lane, unspecified)	2011	Concentric circulatory roadway markings.
(unincorporated), TX Harris Co. United States	Creekside Green Dr. / Creekside Forest Dr. (30.14186, -95.51133)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 91.4400	Other (At-Grade) Single-Lane	2007	.
Baytown, TX Harris Co. United States	San Jacinto Blvd. / Hunt Rd. (29.79464, -94.98907)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 57.9120	Other (At-Grade) Multilane (2 Lane, unspecified)	2018	Statue of Sam Houston in central island.
Tomball, TX Harris Co. United States	Invergarry Way. / Newcourt Blvd. (30.07099, -95.56441)	Other Existing	All-Way Yield None	4 Approaches 0 Driveways 80.7720	Other (At-Grade) Single-Lane		Very large diameter; operates as four T-intersections.
Houston, TX Harris Co. United States	Minimax Dr. / Salford Dr. (29.79757, -95.44543)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 30.4800	Other (At-Grade) Single-Lane	2009
Spring Branch East, TX Harris Co. United States	Hillendahl Blvd. / Westwood Dr. (29.79893, -95.49322)	Roundabout Removed	All-Way Yield None	3 Approaches 0 Driveways 7.0101	Other (At-Grade) Single-lane w/ Traversable Central Island	2010	Built as a mini roundabout in 1998 as part of a larger neighborhood street reconstruction project. It had a mountable center island 6 ft. in diameter and 3" high made from recycled rubber; long gone. Conversion to TWSC estimated from aerial photos.
Houston, TX Harris Co. United States	Westwood Dr. / Huge Oaks St. (29.79887, -95.49113)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 19.8120	Other (At-Grade) Single-Lane	1998	Implemented as part of a larger neighborhood street reconstruction project that incorporated systematic traffic calming elements.
Houston, TX Harris Co. United States	Westwood Dr. / Pine Chase Dr. (29.79887, -95.48897)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 19.8120	Other (At-Grade) Single-Lane	1998	Implemented as part of a larger neighborhood street reconstruction project that incorporated systematic traffic calming elements.
Houston, TX Harris Co. United States	Helios Way / (future street) (29.78332, -95.63666)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 45.7200	Other (At-Grade) Single-Lane	2009	Designed as part of a larger corporate campus master plan for BP. Its design includes a right hand bus apron for pick up and drop off of employees and visitors by shuttle buses, tour buses, and school buses. The leg to the west is intended to serve a future mixed use development. While the ICD may seem larger than it needs to be from a functionality standpoint, the size was intended to accommodate landscape architecture and placemaking elements.
Houston, TX Harris Co. United States	Broadway / Park Pl. / I-45 Frontage Roads (29.68551, -95.27756)	Signalized Roundabout/Circle Existing	Signal Unknown	6 Approaches 0 Driveways 109.7280	Freeway Ramps (Grade-Separated) Multilane (3+ Lane)	1954	Original 1920s circle contained interurban railway station; centerpiece of transit oriented development. Circle converted to conventional intersection after interurban was abandoned in 1936. Circle reconstructed 1954 as part of Gulf Freeway, following old ROW.
Houston, TX Harris Co. United States	Dover Ave. / Moline St. (29.68365, -95.28025)	Other Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 54.8637	Other (At-Grade) Single-Lane		No splitter islands. Oval shape. ICD 180 ft x 130 ft.
Houston, TX Harris Co. United States	Joplin St. / Poplar St. (29.68898, -95.28702)	Other Existing	All-Way Stop Unknown	4 Approaches 0 Driveways 51.8160	Other (At-Grade) Single-Lane
Houston, TX Harris Co. United States	Grove Ridge Dr. / Leonora St. (29.67659, -95.28483)	Other Existing	Unknown Unknown	4 Approaches 0 Driveways 28.9560	Other (At-Grade) Single-Lane		No splitter islands.
Houston, TX Harris Co. United States	Carothers St. / Kinney St. (29.68701, -95.30075)	Other Existing	Uncontrolled Unknown	4 Approaches 0 Driveways 88.3920	Other (At-Grade) Single-Lane		Six houses within central island, parking along circulatory roadway, bidirectional travel along circulatory roadway.
Katy, TX Harris Co. United States	Marcello Lakes Dr. / Fortunata Way (29.83069, -95.79374)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 47.2440	Other (At-Grade) Single-Lane	2017	Year Completed estimated (2016-2017).
Spring, TX Harris Co. United States	Mossy Oaks Rd. / Energy Dr. (30.09722, -95.43843)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 60.9600	Other (At-Grade) Multilane (2 Lane, unspecified)	2012
Cypress, TX Harris Co. United States	Towne Lake Pkwy. / Mayberry Heights Dr. (29.93773, -95.70050)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 54.8640	Other (At-Grade) Single-Lane	2015
Houston, TX Harris Co. United States	Helios Way / (unknown) (29.78333, -95.63664)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 45.7200	Other (At-Grade) Single-Lane	2009
Houston, TX Harris Co. United States	Arrowwood Cir. / Maggie Ln. (29.74479, -95.52577)	Other Existing	Unknown None	4 Approaches 6 Driveways 70.1040	Other (At-Grade) Single-Lane	1951
Houston, TX Harris Co. United States	(unknown) / (parking) (29.78350, -95.64796)	Roundabout Existing	All-Way Yield None	2 Approaches 4 Driveways 35.0520	Other (At-Grade) Single-Lane	2008	Located midway on access road of private development.
Houston, TX Harris Co. United States	Peveto St. / Eberhard St. (29.75841, -95.39706)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 28.9560	Other (At-Grade) Single-Lane	2009
Cypress, TX Harris Co. United States	Williams Bend Dr. / Williams Bend Cir. (29.95040, -95.72315)	Other Existing	All-Way Yield Unknown	3 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane		No splitter islands.
Cypress, TX Harris Co. United States	Crescent Meadow Dr. / Meadow Breeze Dr. / Meadow Haven Cir. (29.95567, -95.74931)	Other Existing	All-Way Yield Unknown	3 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane		No splitter islands.
Cypress, TX Harris Co. United States	Payton Haven Dr. / Kenwood Haven Dr. / Point Haven Dr. (29.95692, -95.74724)	Other Existing	All-Way Yield Unknown	3 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane		No splitter islands.
Cypress, TX Harris Co. United States	Arbor Lodge Dr. / Arbor Blue Ln. / Arbor Haven Cir. (29.95480, -95.74859)	Other Existing	All-Way Yield Unknown	3 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane		No splitter islands.
Cypress, TX Harris Co. United States	Kenwood Haven Dr. / Haven Arbor Dr / Audubon Haven Cir. (29.95631, -95.74503)	Other Existing	Other Unknown	3 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane		No splitter islands.
Cypress, TX Harris Co. United States	Mills Fork Dr. / Mills Glen Dr. / Mill Haven Cir. (29.95972, -95.74806)	Other Existing	Other Unknown	3 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane		No splitter islands.
Cypress, TX Harris Co. United States	Shady Blossom Dr. / Shady Edge Dr. / Shady Haven Cir. (29.95989, -95.74731)	Other Existing	All-Way Yield Unknown	3 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane		No splitter islands.
Cypress, TX Harris Co. United States	Crest Cove Dr. / Cove Forest Ln. / Moon Light Cove Cir. (29.95483, -95.74003)	Other Existing	All-Way Yield Unknown	3 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane		No splitter islands.
Cypress, TX Harris Co. United States	Briarwood Cove Cir. / Cove Pointe Dr. / Cove Mill Ln. (29.95505, -95.73912)	Other Existing	All-Way Yield Unknown	3 Approaches 1 Driveways 0.0000	Other (At-Grade) Single-Lane		No splitter islands.
Cypress, TX Harris Co. United States	Colony Shore Dr. / E Colony Shore Dr. / S Colony Shore Dr. (29.95433, -95.73393)	Other Existing	All-Way Yield Unknown	3 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane		No splitter islands.
Cypress, TX Harris Co. United States	Colony Shore Dr. / N Settlers Shore Dr. / Fullers Grant Ct. (29.95341, -95.73319)	Other Existing	All-Way Yield Unknown	3 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane		No splitter islands.
Cypress, TX Harris Co. United States	Chestnut Cove Cir. / Black Cove Dr. / Cove Bend Ln. (29.95275, -95.73873)	Other Existing	All-Way Yield Unknown	3 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane		No splitter islands.
Cypress, TX Harris Co. United States	Monarch Cove Cir. / Cherry Cove Ln. / Cove Manor Dr. (29.95215, -95.73961)	Other Existing	All-Way Yield Unknown	3 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane		No splitter islands.
Cypress, TX Harris Co. United States	Luby Creek Dr. / Rosita Creek Cir. (29.95007, -95.73610)	Other Existing	All-Way Yield Unknown	3 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane		Parking along circulatory roadway.
Cypress, TX Harris Co. United States	Rankin Creek Dr. / Noelke Creek Cir. (29.94877, -95.73180)	Other Existing	All-Way Yield Unknown	3 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane		Parking along circulatory roadway.
Cypress, TX Harris Co. United States	Heron Crest Dr. / Chacon Creek Cir. (29.94904, -95.73098)	Other Existing	All-Way Yield Unknown	3 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane		Parking along circulatory roadway.
Härnösand, Västernorrland Härnösand Sweden	Stationsgatan / Nybrogatan (62.63489, 17.92961)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways	Other (At-Grade) Single-Lane
Härnösand, Västernorrland Härnösand Sweden	Nybrogatan / Torsviksgatan / Terminalgatan (62.63429, 17.93295)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways	Other (At-Grade) Single-Lane
Härnösand, Västernorrland Härnösand Sweden	Stationsgatan / Djuphammsvägen / Bondsjöleden (62.63719, 17.93243)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways	Other (At-Grade) Single-Lane
Härnösand, Västernorrland Härnösand Sweden	Bondsjöleden / Idrottsvägen / Kaptensgatan (62.63707, 17.92522)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways	Other (At-Grade) Single-Lane
Härnösand, Västernorrland Härnösand Sweden	Brunnshunsgatan / Hovsgatan (62.62963, 17.94273)	Roundabout Existing	All-Way Yield Unknown	3 Approaches 0 Driveways	Other (At-Grade) Single-Lane
Härnösand, Västernorrland Härnösand Sweden	Brännavägen / Gånsviksvägen (62.62819, 17.95998)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways	Other (At-Grade) Single-Lane
Linden, NC Harnett Co. United States	US 141 / Josey Williams Rd. / Horseshoe Bend Rd. (35.26793, -78.77400)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane	2023	https://www.mydailyrecord.com/news/horseshoe-bend-road-reopens-with-roundabout/article_4f1c1054-3abf-11ee-88bb-9f6ae07cb830.html
Spring Lake, NC Harnett Co. United States	Overhills Rd. / Anderson Creek Shopping Center (35.25622, -78.96507)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 31.2084	Other (At-Grade) Single-Lane	2017	ICD = 120 ft. ICD estimated from Google Maps linework.
Buies Creek, NC Harnett Co. United States	Leslie Campbell Ave. / TT LAnier St. / Harmon Rd. (35.40710, -78.74020)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 35.0440	Other (At-Grade) Single-Lane	2009	ICD estimated from Google Maps linework.
Lillington, NC Harnett Co. United States	Leslie Campbell Ave. / Main St. / Marshbanks St. (35.40706, -78.73753)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 36.0175	Other (At-Grade) Single-Lane	2011	Previous control type estimated. ICD estimated from Google Maps linework.
Dunn, NC Harnett Co. United States	Ashe Ave. / Powell Ave. (35.32604, -78.63059)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 39.9513	Other (At-Grade) Single-Lane	2014	Right-turn only lane on south leg. ICD estimated from Google Maps linework.
Spring Lake, NC Harnett Co. United States	Coopers Creek Ave. / Aspen Ave. (35.25332, -78.96793)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 129.7147	Other (At-Grade) Single-Lane	2011	No splitter islands. ICD estimated from Google Maps linework.
Spring Lake, NC Harnett Co. United States	Ray Rd. / Overhills Rd. (north) (35.25880, -78.97023)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 59.4892	Other (At-Grade) Multilane (2 Lane, unspecified)	2016	One skewed, signalized intersection split into two roundabouts. ICD estimated from Google Maps linework.
Spring Lake, NC Harnett Co. United States	Ray Rd. / Overhills Rd. (south) (35.25615, -78.96791)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 54.6148	Other (At-Grade) Multilane (2 Lane, unspecified)	2016	One skewed, signalized intersection split into two roundabouts. ICD estimated from Google Maps linework.
Aberdeen, MD Harford Co. United States	Philadelphia Rd. (MD 7) / Ashford Dr.. / Panell Dr. (39.48593, -76.23873)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 41.4792	Other (At-Grade) Single-Lane	2012	ICD estimated from Google Maps linework.
Aberdeen, MD Harford Co. United States	Tralee Cir. / Ashford Dr. (39.48395, -76.23831)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 25.8100	Other (At-Grade) Single-Lane	2003	ICD estimated from Google Maps linework.
Aberdeen, MD Harford Co. United States	Burnt Hill Trl. / Atlas Cedar Way / Thistle Hill Dr. (39.49324, -76.22236)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 33.1799	Other (At-Grade) Single-Lane	2008	ICD estimated from Google Maps linework.
Aberdeen, MD Harford Co. United States	Burnt HIll Trl. / Witch Hazel Way / Limestone Ct. (39.49486, -76.22046)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 33.1791	Other (At-Grade) Single-Lane	2008	ICD estimated from Google Maps linework.
Aberdeen, MD Harford Co. United States	Thistle Hill Dr. / Witchhazel Way (39.49563, -76.22415)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 31.3355	Other (At-Grade) Single-Lane	2008	ICD estimated from Google Maps linework.
Aberdeen, MD Harford Co. United States	Burnt Hill Trl. / Holly Oak Cir. / Woods Line Dr. (39.49605, -76.21740)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 25.8055	Other (At-Grade) Single-Lane	2007	ICD estimated from Google Maps linework.
Bel Air, MD Harford Co. United States	Tollgate Rd. / Macphail Rd. (39.51959, -76.35208)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 19.8120	Other (At-Grade) Single-lane w/ Traversable Central Island	2012
Abingdon, MD Harford Co. United States	Merchants Blvd. / Wegmans Blvd. (39.46815, -76.30901)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 29.5039	Other (At-Grade) Single-Lane	2012	ICD estimated from Google Maps linework.
Havre de Grace, MD Harford Co. United States	Chapel Rd. / Bulle Rock Pkwy. (39.55465, -76.12813)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 34.9922	Other (At-Grade) Single-Lane	2005	ICD estimated from Google Maps linework.
Havre de Grace, MD Harford Co. United States	Blenheim Farm Ln. / Bounding Home Ct. (39.54665, -76.13521)	Other Existing	All-Way Yield None	4 Approaches 0 Driveways 30.3915	Other (At-Grade) Single-Lane	2006	Painted splitter islands on north and south legs, no splitter islands on east and west legs. 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.
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.
Abingdon, MD Harford Co. United States	Tollgate Rd. / Singer Rd. (39.47828, -76.32727)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 25.8121	Other (At-Grade) Single-Lane	1998	http://www.teachamerica.com/roundabouts/RA058B_ppr_Statmeyer.pdf#search=%22bel%20air%20roundabout%22 ICD estimated from Google Maps linework.
Fountain Green, MD Harford Co. United States	Prospect Mill Rd. / Wagner Rd. (39.55824, -76.30247)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 31.3072	Other (At-Grade) Single-Lane	2002	http://www.teachamerica.com/roundabouts/RA058B_ppr_Statmeyer.pdf#search=%22bel%20air%20roundabout%22 Functional Class: Collector ICD estimated from Google Maps linework.
Bel Air, MD Harford Co. United States	Moores Mill Rd. / Brushing Ln. (39.54368, -76.32365)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 27.6298	Other (At-Grade) Single-Lane	2001	http://www.teachamerica.com/roundabouts/RA058B_ppr_Statmeyer.pdf#search=%22bel%20air%20roundabout%22 ICD estimated from Google Maps linework.
Frogtown, MD Harford Co. United States	Mardic Dr. / Willrich Ct. (39.57178, -76.37160)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 31.3011	Other (At-Grade) Single-Lane	2001	http://www.teachamerica.com/roundabouts/RA058B_ppr_Statmeyer.pdf#search=%22bel%20air%20roundabout%22 ICD estimated from Google Maps linework.
Bel Air, MD Harford Co. United States	Tollgate Rd. / Marketplace Dr. (39.52092, -76.35262)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 28.5602	Other (At-Grade) Single-Lane	1996	Three leg, off-set roundabout - off-set due to lack of r/w on top side of Functional Class: Collector ICD estimated from Google Maps linework.
Abingdon, MD Harford Co. United States	Tollgate Rd. / Montrose Way (39.48198, -76.32751)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 28.5762	Other (At-Grade) Single-Lane	2003	Elementary school and library to north, another school to south. Functional Class: Collector ICD estimated from Google Maps linework.
Bel Air, MD Harford Co. United States	Tollgate Rd. / Westover Ln. / Crisfield Dr. (39.46859, -76.32162)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 26.7377	Other (At-Grade) Single-Lane	2002	http://www.teachamerica.com/roundabouts/RA058B_ppr_Statmeyer.pdf#search=%22bel%20air%20roundabout%22 Previously controlled by two-way stop Functional Class: Collector ICD estimated from Google Maps linework.
Bel Air, MD Harford Co. United States	MD 7 / Holly Oaks Drive (39.48848, -76.21669)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 34.1039	Other (At-Grade) Single-Lane	1999	Opened September 1999. ICD estimated from Google Maps linework.
North Harford, MD Harford Co. United States	MD 165 / MD 24 (39.67220, -76.40930)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 32.1750	Other (At-Grade) Single-Lane	2000	Rural Previously controlled by two-way stop ICD estimated from Google Maps linework.
Bel Air, MD Harford Co. United States	Tollgate Rd. / Wheel Rd. (39.48999, -76.32914)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 28.5729	Other (At-Grade) Single-Lane	1999	http://www.teachamerica.com/roundabouts/RA058B_ppr_Statmeyer.pdf#search=%22bel%20air%20roundabout%22 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.
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.
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.
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.
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.
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.
Bel Air North, MD Harford Co. United States	Water Tower Way / Bynum Rd. (39.56671, -76.35712)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 28.9560	Other (At-Grade) Single-Lane	2019	http://harfordcountymd.gov/ArchiveCenter/ViewFile/Item/1683
Bel Air North, MD Harford Co. United States	Red Pump Rd. / Yankee Doodle Dr. (39.54551, -76.37994)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 36.5760	Other (At-Grade) Single-Lane	2010
Bel Air South, MD Harford Co. United States	Woodsdale Rd. / Box Hill Corporate Center Dr. / (parking) (39.46498, -76.31016)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 30.4800	Other (At-Grade) Single-Lane	2014	Year Completed estimated (2013-2015).
Abingdon, MD Harford Co. United States	Laurel Bush Rd. / E Wheel Rd. (39.49411, -76.31652)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 33.5280	Other (At-Grade) Single-Lane	2010	Year Completed estimated (2009-2011).
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).