Roundabouts Database Index

29410 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
Unionville, PA Chester Co. United States	Rte. 82 (Doe Run Rd.) / Unionville Rd. (39.89142, -75.72215)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 27.4909	Other (At-Grade) Single-Lane	2005	Previously controlled by one-way stop Functional Class: Arterial ICD estimated from Google Maps linework.
Telluride, CO San Miguel Co. United States	W. Colorado Ave. / Mahoney Dr. / Brewery Rd. (37.94135, -107.82080)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 33.9083	Other (At-Grade) Single-Lane	2005	ICD estimated from Google Maps linework.
Cle Elum, WA Kittitas Co. United States	SR 903 / Bullfrog Rd (47.20810, -120.98210)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 37.3222	Other (At-Grade) Single-Lane	2005	ICD estimated from Google Maps linework.
Bend, OR Deschutes Co. United States	NW Crossing Dr. / Lemhi Pass Rd. (44.06210, -121.34600)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 31.7544	Other (At-Grade) Single-Lane	2006	New roads as part of NW Crossing Development ICD estimated from Google Maps linework.
Bend, OR Deschutes Co. United States	NW Crossing Dr. / Shevlin Park Road (44.06410, -121.34480)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 34.3280	Other (At-Grade) Single-Lane	2006	Intersection as part of NW Crossing Development. Connection to existing NW Shevlin Park Road. ICD estimated from Google Maps linework.
Estero, FL Lee Co. United States	Williams Rd. / Chapel Trace (26.41990, -81.83160)	Other Existing	Unknown Unknown	4 Approaches 0 Driveways 29.9485	Other (At-Grade) Single-Lane	2006	Near Estero High School. ICD estimated from Google Maps linework.
Cape Coral, FL Lee Co. United States	SE 24th Ave. / SE 9th St. / Birkdale Ave. (26.63679, -81.92426)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 24.5541	Other (At-Grade) Single-Lane	2002	Originally two stop-controlled, offset T-intersections. Now is a hotdog/racetrack-shaped roundabout. Date estimated. ICD estimated from Google Maps linework.
Middletown, NJ Monmouth Co. United States	Newman Springs Rd. (CR 520) / College Dr. (40.33204, -74.13175)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 32.7760	Other (At-Grade) Multilane (2 Lane, unspecified)	2007	Entrance to Brookdale Community College and Lincroft Bible Church. Expected opening August 2007. ICD estimated from Google Maps linework.
Branson, MO Taney Co. United States	Branson Landing Blvd. / Veterans Blvd. / Skaggs Rd. / Parnell Dr. (36.64981, -93.21976)	Roundabout Existing	All-Way Yield None	5 Approaches 0 Driveways 63.2418	Other (At-Grade) Multilane (2 Lane, unspecified)	2006	Near Skaggs Community Health Center Hospital. Veterans Boulevard was formerly Business 65 but was transferred from MoDOT to the city. Cost of roundabout was $1.9 million. News article: http://www.news-leader.com/apps/pbcs.dll/article?Date=20060324&Category=NEWS02&ArtNo=603240360&SectionCat=&Template=printart ICD estimated from Google Maps linework.
Howard, WI Brown Co. United States	Belmont Rd. / Belle Plane Rd. (44.58361, -88.09459)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 22.9671	Other (At-Grade) Single-Lane	2000	Roundabout was constructed in center of residential subdivision south of Lineville Road. Roundabout is slightly smaller than the Lineville roundabouts. Completed August 2000. http://www.co.brown.wi.us/Planning/roundabouts.html Functional Class: Local ICD estimated from Google Maps linework.
Howard, WI Brown Co. United States	Velp Ave. (CTH HS) / Woodale Ave. (CTH EB) (44.57293, -88.07800)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 32.3300	Other (At-Grade) Single-Lane	2002	Roundabout Located near industrial park, rail line, and the Mountain-Bay Recreational Trail. Roundabout is at the intersection of two county highways and is slightly larger than the roundabouts built in 1999 and 2001 in Howard and De Pere. Completed August 2002. http://www.co.brown.wi.us/Planning/roundabouts.html. Fatal crash June 5, 2011. 11861-05. Functional Class: Arterial ICD estimated from Google Maps linework.
De Pere, WI Brown Co. United States	Grant St. (CTH EE) / S 9th St. (44.44506, -88.09000)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 26.4324	Other (At-Grade) Single-Lane	2003	Roundabout located within residential neighborhood that also contains a few small businesses and a fire station. One of the fire station driveways directly accesses the roundabout. Completed August 2003. http://www.co.brown.wi.us/Planning/roundabouts.html ICD estimated from Google Maps linework.
De Pere, WI Brown Co. United States	Scheuring Rd. (CTH F) / Suburban Dr. (44.43055, -88.08604)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 32.4090	Other (At-Grade) Single-Lane	2004	One of two roundabouts on an arterial street that separates a residential neighborhood from a business park. Many trucks traveling to and from the business park pass through this intersection each day, and the roundabout serves as an attractive entrance to the neighborhood and park. Completed November 2004. http://www.co.brown.wi.us/Planning/roundabouts.html. Series of 6 roundabouts. Opened November 2004. Functional Class: Arterial ICD estimated from Google Maps linework.
De Pere, WI Brown Co. United States	Scheuring Rd. (CTH F) / S 9th St. / W Matthew Dr. (44.43063, -88.09529)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 35.8205	Other (At-Grade) Single-Lane	2004	Second of two roundabouts on an arterial street separating residential neighborhood from a business park. Many trucks pass through this intersection each day. Completed November 2004. http://www.co.brown.wi.us/Planning/roundabouts.html. Series of 6 roundabouts. Opened November 2004. Functional Class: Arterial ICD estimated from Google Maps linework.
Nashua, NH Hillsborough Co. United States	Main St. / Daniel Webster Hwy (42.73881, -71.45826)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 32.4557	Other (At-Grade) Single-Lane	2003	Located near Rivier College, 1/4 mile north of Exit 3 of the Everett Turnpike. ICD estimated from Google Maps linework.
Newton, MA Middlesex Co. United States	Wheeler Rd. / Meadowbrook Rd. (42.30915, -71.19085)	Other Existing	One-Way/Two-Way Stop None	3 Approaches 0 Driveways 22.0809	Other (At-Grade) Single-Lane	2003	At elementary school. ICD estimated from Google Maps linework.
Barnstable, MA Barnstable Co. United States	Rte 149 / Race Ln. (41.68164, -70.40159)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 25.8676	Other (At-Grade) Single-Lane	1999	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.
Kennewick, WA Benton Co. United States	4th Ave. / Kellogg St. (46.20635, -119.20120)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 32.2355	Other (At-Grade) Single-Lane	2009	April 2009. Previously controlled by two-way stop Functional Class: Collector ICD estimated from Google Maps linework.
Kennewick, WA Benton Co. United States	Grandridge Blvd. / Okanogan Pl. (46.22327, -119.21380)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 41.3148	Other (At-Grade) Single-Lane	2003	Completed November 2003. Functional Class: Collector ICD estimated from Google Maps linework.
Nampa, ID Canyon Co. United States	Happy Valley Rd. / Amity Ave. (43.56146, -116.51290)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 43.2726	Other (At-Grade) Single-Lane	2006	Designed for ultimate two-lane w/ 180-ft ICD. Current 160-ft single-lane is initial build. Previously controlled by 4-way stop Functional Class: Arterial ICD estimated from Google Maps linework.
Lithonia, GA DeKalb Co. United States	Klondike Rd. / Rockland Rd. (33.67606, -84.11486)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 33.7927	Other (At-Grade) Single-Lane	2008	Previously controlled by two-way stop control ICD estimated from Google Maps linework.
Gatineau, QC Outaouais Region Canada	Blvd. St.-Laurent / Blvd. St.-Joseph (Rte. 105) (45.43216, -75.73323)	Roundabout Existing	All-Way Yield Pedestrian Signal (red-yellow-green to drivers)	4 Approaches 0 Driveways 49.4493	Other (At-Grade) Multilane (2 Lane, unspecified)	2004	Staggered, two-stage pedestrian signal on east leg. Warning beacons on other legs. Functional Class: Arterial 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.
Brighton, MI Livingston Co. United States	Lee Rd. / US 23 NB Ramps / Fieldcrest Dr. (42.50486, -83.75652)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 47.5461	Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified)	2005	ICD estimated from Google Maps linework.
Brighton, MI Livingston Co. United States	Lee Rd. / US 23 SB Ramps (42.50605, -83.75954)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 37.8600	Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified)	2006	Linked with Lee Rd/Whitmore Lake Rd roundabout. Previously controlled by one-way stop control ICD estimated from Google Maps linework.
Brighton, MI Livingston Co. United States	Lee Rd. / Whitmore Lake Rd. (42.50627, -83.76012)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 42.2622	Other (At-Grade) Multilane (2 Lane, unspecified)	2006	Linked with US 23 SB Ramps/Lee Rd. roundabout. Functional Class: Arterial ICD estimated from Google Maps linework.
Buena Vista Township, MI Saginaw Co. United States	M-81 / I-75 SB Ramps (43.45060, -83.89209)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 34.6818	Freeway Ramps (Grade-Separated) Single-Lane	2006	Right turn bypass lanes ICD estimated from Google Maps linework.
Buena Vista Township, MI Saginaw Co. United States	M-81 / I-75 NB Ramps (43.45056, -83.88958)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 34.6818	Freeway Ramps (Grade-Separated) Single-Lane	2006	Right turn bypass lanes ICD estimated from Google Maps linework.
Marshall, MI Calhoun Co. United States	I-94 Business (W Michigan Ave.) / M-227 (Kalamazoo Ave.) (42.27199, -84.96413)	Other Existing	Unknown Unknown	4 Approaches 0 Driveways 83.0730	Other (At-Grade) Unknown		ICD estimated from Google Maps linework.
Homer, MI Calhoun Co. United States	Hillsdale St. / Main St. (42.14585, -84.80890)	Other Existing	Unknown Unknown	4 Approaches 0 Driveways 39.8485	Other (At-Grade) Single-Lane		Before 1999. ICD estimated from Google Maps linework.
Tamarack Resort, ID Valley Co. United States	West Mountain Rd. / Village Dr. (44.66998, -116.11130)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 39.9203	Other (At-Grade) Single-Lane	2005	ICD estimated from Google Maps linework.
Jupiter, FL Palm Beach Co. United States	S. Central Blvd. / Indian Creek Pkwy. (26.91067, -80.11073)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 105.4349	Other (At-Grade) Multilane (2 Lane, unspecified)	2004	Functional Class: Arterial ICD estimated from Google Maps linework.
Jupiter, FL Palm Beach Co. United States	S. Central Blvd. / Frederick Small Rd. (26.89750, -80.11127)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 119.2938	Other (At-Grade) Multilane (2 Lane, unspecified)	2004	ICD estimated from Google Maps linework.
Jupiter, FL Palm Beach Co. United States	S. Central Blvd. / Main St. (26.88774, -80.11160)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 119.3041	Other (At-Grade) Multilane (2 Lane, unspecified)	2004	ICD estimated from Google Maps linework.
Stuart, FL Martin Co. United States	S. Dixie Hwy / SW Joan Jefferson Way / SW Akron Ave. / SW St. Lucie Ave. (27.19928, -80.25545)	Roundabout Existing	All-Way Yield None	5 Approaches 0 Driveways 29.7433	Other (At-Grade) Single-Lane	2005	ICD estimated from Google Maps linework.
South Windsor, CT Hartford Co. United States	Hemlock Ave. / Evergreen Way (41.81417, -72.55495)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 45.3975	Other (At-Grade) Single-Lane	2004	Roundabout is part of The Shops at Evergreen Walk retail center. ICD estimated from Google Maps linework.
Chattanooga, TN Hamilton Co. United States	SR 153 NB Ramps / Lake Resort Dr. (35.10986, -85.22842)	Roundabout Existing	All-Way Yield Unknown	3 Approaches 0 Driveways 55.6902	Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified)	2006	At new intersection with new bridge and alignment of Lake Resort Drive. Former intersection was ~800 to the south. Non-symetric design. Some motions have two lanes. Previously controlled by signal ICD estimated from Google Maps linework.
Chattanooga, TN Hamilton Co. United States	SR 153 SB Ramps / N. Access Rd. / TVA offices (35.10868, -85.23122)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 97.7036	Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified)	2006	N Access Road is a 4 lane arterial road. Fatal crash April 4, 2010. 11861-05. ICD estimated from Google Maps linework.
Chattanooga, TN Hamilton Co. United States	Mountain Creek Rd. / W Rd. (35.10743, -85.32608)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 21.4951	Other (At-Grade) Single-Lane	2003	At the base of the Previously controlled by one way stop ICD estimated from Google Maps linework.
Knightdale, NC Wake Co. United States	Hinton Oakes Blvd. / Lynnwood Rd. (35.79374, -78.51039)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 40.6876	Other (At-Grade) Single-Lane	2007	Roundabout was designed to accommodate existing utilities and connect two existing roads and a driveway to a new retail outlet. Functional Class: Arterial ICD estimated from Google Maps linework.
Knightdale, NC Wake Co. United States	Widewater Blvd. / Village Park Dr. (35.79402, -78.50642)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 16.4687	Other (At-Grade) Single-Lane	2004	Constructed using concrete. (Updated in 2007?) Functional Class: Collector ICD estimated from Google Maps linework.
Knightdale, NC Wake Co. United States	Maplewood Dr. / McKnight Dr. (35.79656, -78.48228)	Other Existing	All-Way Yield None	2 Approaches 0 Driveways 33.9052	Other (At-Grade) Single-Lane	2000	Functional Class: Collector ICD estimated from Google Maps linework.
Spokane, WA Spokane Co. United States	Crestline Rd. / Lincoln St. (47.72944, -117.37920)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 30.5271	Other (At-Grade) Single-Lane	2006	Opened September 2006. ICD estimated from Google Maps linework.
Colorado Springs, CO El Paso Co. United States	Brainard Dr. / Squirreltail Dr. (38.96376, -104.74410)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 23.2161	Other (At-Grade) Single-Lane	2000	ICD estimated from Google Maps linework.
Colorado Springs, CO El Paso Co. United States	(parking lot #1) (39.01388, -104.81080)	Roundabout Removed	All-Way Yield None	4 Approaches 0 Driveways 21.3437	Other (At-Grade) Single-Lane	2013	Originally built 2004. Removal date estimated (2011-2015). ICD estimated from Google Maps linework.
Colorado Springs, CO El Paso Co. United States	Serenity Park Dr. / (parking lot) (39.01540, -104.81010)	Other Existing	Unknown Unknown	3 Approaches 0 Driveways 23.1991	Other (At-Grade) Single-Lane	2004	ICD estimated from Google Maps linework.
Colorado Springs, CO El Paso Co. United States	Research Pkwy. / (unknown #1) (38.95966, -104.72230)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 44.5774	Other (At-Grade) Multilane (2 Lane, unspecified)	2006	Has marked double-left turn at northbound entry using conventional arrows. Functional Class: Arterial ICD estimated from Google Maps linework.
Colorado Springs, CO El Paso Co. United States	Research Pkwy. / (unknown #2) (38.96123, -104.71810)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 49.2198	Other (At-Grade) Multilane (2 Lane, unspecified)	2006	Functional Class: Arterial ICD estimated from Google Maps linework.
Colorado Springs, CO El Paso Co. United States	Research Pkwy. / (unknown #3) (38.96204, -104.71430)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 50.1479	Other (At-Grade) Multilane (2 Lane, unspecified)	2006	Functional Class: Arterial ICD estimated from Google Maps linework.
Colorado Springs, CO El Paso Co. United States	New Car Dr. / Duryea Dr. (38.93880, -104.72930)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 44.5906	Other (At-Grade) Single-Lane	2003	Serves retail shopping center. ICD estimated from Google Maps linework.
Colorado Springs, CO El Paso Co. United States	New Car Dr. / Test Dr. (38.93844, -104.73440)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 43.6618	Other (At-Grade) Multilane (2 Lane, unspecified)	2003	Serves retail shopping center. ICD estimated from Google Maps linework.
Colorado Springs, CO El Paso Co. United States	New Car Dr. / parking lot (38.93777, -104.73750)	Other Existing	Unknown None	2 Approaches 0 Driveways 43.6622	Other (At-Grade) Single-Lane		Serves retail shopping center. ICD estimated from Google Maps linework.
Colorado Springs, CO El Paso Co. United States	Newport Rd. / Vapor Trl. (38.80787, -104.72680)	Roundabout Existing	Unknown Unknown	3 Approaches 0 Driveways 25.1284	Other (At-Grade) Single-Lane	2002	Y-shaped intersection. ICD estimated from Google Maps linework.
Colorado Springs, CO El Paso Co. United States	Rockhurst Blvd. / University Park Blvd. (38.91005, -104.78980)	Roundabout Existing	Unknown Unknown	3 Approaches 0 Driveways 21.3750	Other (At-Grade) Single-Lane	1998	ICD estimated from Google Maps linework.
Colorado Springs, CO El Paso Co. United States	Rockhurst Blvd. / Montebello Dr. (38.90582, -104.78980)	Roundabout Existing	Unknown Unknown	4 Approaches 0 Driveways 20.4468	Other (At-Grade) Single-Lane	2000	ICD estimated from Google Maps linework.
Colorado Springs, CO El Paso Co. United States	Collegiate Dr. / Michael Dr. (38.89928, -104.78230)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 16.7308	Other (At-Grade) Single-Lane	2001	ICD estimated from Google Maps linework.
Colorado Springs, CO El Paso Co. United States	Kettle Drum St. / Antelope Ridge Dr. (38.90673, -104.68530)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 30.6699	Other (At-Grade) Single-Lane	2006	ICD estimated from Google Maps linework.
Colorado Springs, CO El Paso Co. United States	Carefree Cir. / New Center Pl. (38.87741, -104.71720)	Roundabout Existing	Unknown Unknown	4 Approaches 0 Driveways 44.6291	Other (At-Grade) Multilane (2 Lane, unspecified)	2003	ICD estimated from Google Maps linework.
Colorado Springs, CO El Paso Co. United States	Cedar Creek View / (parking lot) (38.85572, -104.72340)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 24.1815	Other (At-Grade) Single-Lane	2002	ICD estimated from Google Maps linework.
Colorado Springs, CO El Paso Co. United States	Treeline View / Stately View (38.87351, -104.86560)	Roundabout Existing	Unknown Unknown	3 Approaches 0 Driveways 38.1228	Other (At-Grade) Single-Lane	2003	ICD estimated from Google Maps linework.
Colorado Springs, CO El Paso Co. United States	(unknown #2) (38.87847, -104.84910)	Other Existing	Unknown Unknown	0 Approaches 0 Driveways 18.5952	Other (At-Grade) Unknown		ICD estimated from Google Maps linework.
Colorado Springs, CO El Paso Co. United States	Mesa Rd. / Kissing Camels Dr. (38.87808, -104.86580)	Roundabout Existing	Unknown Unknown	4 Approaches 0 Driveways 29.7525	Other (At-Grade) Single-Lane	2001	ICD estimated from Google Maps linework.
New York, NY Manhattan Co. United States	Columbus Circle (7th Ave. / Broadway / Central Park West / Central Park South) (40.76808, -73.98187)	Signalized Roundabout/Circle Existing	Signal None	5 Approaches 0 Driveways 123.0168	Other (At-Grade) Multilane (3+ Lane)	1905	ICD estimated from Google Maps linework.
Hagerstown, MD Washington Co. United States	Virginia Ave. / Memorial Blvd. / Prospect St. / Key St. (39.63728, -77.72873)	Other Existing	Other None	0 Approaches 0 Driveways 36.7900	Other (At-Grade) Unknown		ICD estimated from Google Maps linework.
Hagerstown, MD Washington Co. United States	E. Irvin Ave. / Mealey Pkwy. (39.65536, -77.70186)	Other Existing	All-Way Stop None	0 Approaches 0 Driveways 37.6999	Other (At-Grade) Single-Lane		ICD estimated from Google Maps linework.
Hagerstown, MD Washington Co. United States	E. Irvin Ave. / View St. / Valleybrook Dr. (39.65536, -77.70058)	Other Existing	All-Way Stop None	0 Approaches 0 Driveways 31.2633	Other (At-Grade) Single-Lane		ICD estimated from Google Maps linework.
Hagerstown, MD Washington Co. United States	E. Magnolia Ave. / Mealey Pkwy. (39.65762, -77.70140)	Other Existing	All-Way Stop None	0 Approaches 0 Driveways 32.1818	Other (At-Grade) Single-Lane		ICD estimated from Google Maps linework.
Hagerstown, MD Washington Co. United States	E. Magnolia Ave. / E. Irvin Ave. (39.65722, -77.69958)	Other Existing	All-Way Stop None	0 Approaches 0 Driveways 27.5846	Other (At-Grade) Single-Lane		ICD estimated from Google Maps linework.
Lawrence, KS Douglas Co. United States	W. Harvard Rd. / S. Moundridge Dr. (38.96770, -95.30438)	Traffic Calming Circle Existing	Unknown Unknown	0 Approaches 0 Driveways 13.0003	Other (At-Grade) Unknown		ICD estimated from Google Maps linework.
Gaithersburg, MD Montgomery Co. United States	Orchard Ridge Dr. / Mill Green Ave. (39.12559, -77.22635)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 37.9872	Other (At-Grade) Multilane (2 Lane, unspecified)	2002	ICD estimated from Google Maps linework.
Gaithersburg, MD Montgomery Co. United States	Winter Walk Dr. / Highland Ridge Ave. (39.12807, -77.22692)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 34.2800	Other (At-Grade) Single-Lane	1998	Year Completed estimated (1993-2002). Was cul-de-sac prior to addition of two more legs. ICD estimated from Google Maps linework.
Boise, ID Ada Co. United States	S. Touchmark Way / E. Louise Dr. (43.60317, -116.34880)	Roundabout Existing	Unknown Unknown	4 Approaches 0 Driveways 29.4050	Other (At-Grade) Single-Lane	2006	ICD estimated from Google Maps linework.
Boise, ID Ada Co. United States	S. Touchmark Way / S. Worth Way (43.60206, -116.34610)	Roundabout Existing	Unknown Unknown	4 Approaches 0 Driveways 30.2704	Other (At-Grade) Single-Lane	2006	ICD estimated from Google Maps linework.
Arlington, VA Arlington Co. United States	Memorial Dr. / Arlington Memorial Bridge (38.88573, -77.06004)	Rotary Existing	Unknown Unknown	0 Approaches 0 Driveways 114.3488	Other (At-Grade) Unknown		ICD estimated from Google Maps linework.
Washington, DC N/A Co. United States	G St. / 3rd St. SW (38.88127, -77.01520)	Traffic Calming Circle Existing	Unknown Unknown	0 Approaches 0 Driveways 26.9620	Other (At-Grade) Unknown		ICD estimated from Google Maps linework.
Washington, DC N/A Co. United States	G St. / 1st St. SW (38.88119, -77.01228)	Traffic Calming Circle Existing	Unknown Unknown	0 Approaches 0 Driveways 31.6106	Other (At-Grade) Unknown		ICD estimated from Google Maps linework.
Washington, DC N/A Co. United States	H St. / Delaware Ave. (38.88028, -77.01262)	Traffic Calming Circle Existing	Unknown Unknown	0 Approaches 0 Driveways 31.6110	Other (At-Grade) Unknown		ICD estimated from Google Maps linework.
Washington, DC N/A Co. United States	New York Ave. / Montana Ave. / West Virginia Ave. (38.91723, -76.97813)	Signalized Roundabout/Circle Existing	Signal None	0 Approaches 0 Driveways 65.9769	Other (At-Grade) Unknown		ICD estimated from Google Maps linework.
Boston, MA Suffolk Co. United States	VFW Pkwy. / North Shore Rd. (Butler Circle) (42.41228, -70.99350)	Rotary Existing	Unknown Unknown	0 Approaches 0 Driveways 84.6514	Other (At-Grade) Multilane (2 Lane, unspecified)		Functional Class: Arterial ICD estimated from Google Maps linework.
Boston, MA Suffolk Co. United States	Broadway / Main (42.40244, -71.06048)	Rotary Existing	Unknown Unknown	0 Approaches 0 Driveways 123.4694	Other (At-Grade) Unknown		ICD estimated from Google Maps linework.
Jensen Beach, FL Martin Co. United States	SR 707 / Pineapple Dr. / Jensen Beach Causeway (27.25074, -80.22818)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 30.7914	Other (At-Grade) Single-Lane	1999	RT only lanes entering roundabout on two approaches. ICD estimated from Google Maps linework.
Ancaster, ON Hamilton Canada	Wilson St. / Meadowbrook Dr. / Hamilton Dr. (43.20797, -80.00224)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 35.6911	Other (At-Grade) Single-Lane	2002	ICD estimated from Google Maps linework.
Markham, ON York Region Canada	Prospectors Dr. / Angus Glen Blvd. (43.89075, -79.31981)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 29.2641	Other (At-Grade) Single-Lane	2004	Functional Class: Local ICD estimated from Google Maps linework.
Markham, ON York Region Canada	Prospectors Dr. / The Fairways (43.89400, -79.32079)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 24.0985	Other (At-Grade) Single-Lane	2004	Functional Class: Local ICD estimated from Google Maps linework.
Richmond, VA Henrico Co. United States	Monument Ave. / Allen Ave. (37.55384, -77.46020)	Other Existing	Unknown Unknown	4 Approaches 0 Driveways 74.8004	Other (At-Grade) Multilane (2 Lane, unspecified)		ICD estimated from Google Maps linework.
Richmond, VA Henrico Co. United States	Stuart Circle (37.55246, -77.45788)	Other Existing	Unknown Unknown	4 Approaches 0 Driveways 35.9806	Other (At-Grade) Multilane (2 Lane, unspecified)		ICD estimated from Google Maps linework.
Greensboro, NC Guilford Co. United States	Greene St. / McGee St. (36.06852, -79.79192)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 21.2386	Other (At-Grade) Single-Lane	2006	This is part of a major transformation of Greene Street in Downtown Greensboro. Greene Street is currently 4 lanes one-way and will be converted to 2-way traffic with one lane in each direction and angled parking in the middle of the street separated by a median. Functional Class: Arterial ICD estimated from Google Maps linework.
Concord, CA Contra Costa Co. United States	Landana Dr. / Mulberry Dr. (37.97886, -121.99430)	Traffic Calming Circle Existing	All-Way Yield None	3 Approaches 0 Driveways 16.0041	Other (At-Grade) Single-Lane		ICD estimated from Google Maps linework.
Huntington, NY Suffolk Co. United States	Clinton Ave. / Gerard St. (40.87225, -73.42886)	Roundabout Existing	All-Way Yield Unknown	3 Approaches 0 Driveways 14.4499	Other (At-Grade) Single-Lane	2002	http://query.nytimes.com/gst/fullpage.html?res=9D04E4DB133DF931A15751C1A9649C8B63 ICD estimated from Google Maps linework.
New Orleans, LA Orleans Par. United States	Lee Circle (St. Charles Ave. / Andrew Higgins Dr.) (29.94333, -90.07247)	Signalized Roundabout/Circle Existing	Other None	4 Approaches 0 Driveways 99.3513	Other (At-Grade) Unknown		Two tram lines run along the circulatory roadway. Some entry-circulating points are fully signalized; others are yield-controlled. ICD estimated from Google Maps linework.
Metairie Terrace, LA Jefferson Par. United States	Causeway Blvd. (LA 3046) / US 61 (Airline Hwy.) (29.97476, -90.15636)	Rotary Existing	All-Way Yield None	4 Approaches 0 Driveways 107.5965	Other (At-Grade) Unknown		Single-point interchange using one circle. Entire circle is on causeway structure over railroad yards. ICD estimated from Google Maps linework.
Meridian Township, MI Ingham Co. United States	Hulett Rd. / Bennett Rd. (42.69739, -84.44709)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 35.9884	Other (At-Grade) Single-Lane	2004	ICD estimated from Google Maps linework.
Manistee, MI Manistee Co. United States	Lakeshore Dr. / Monroe St. / Cottage Ln. (44.25355, -86.33302)	Other Existing	Unknown Unknown	4 Approaches 0 Driveways 45.3388	Other (At-Grade) Single-Lane	1992	Before 1993. No splitter islands on east leg. ICD estimated from Google Maps linework.
Jackson, MI Jackson Co. United States	4th St. / West Ave. (42.22067, -84.41847)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 35.3790	Other (At-Grade) Multilane (2 Lane, unspecified)	2002	Between 1999 and 2005. ICD estimated from Google Maps linework.
Orion Township, MI Oakland Co. United States	Baldwin Rd. / Indianwood Rd. / Coats Rd. (42.78413, -83.31979)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 49.0862	Other (At-Grade) Multilane (2 Lane, unspecified)	2004	ICD estimated from Google Maps linework.
Litchfield Park, AZ Maricopa Co. United States	Wigwam Creek Blvd. / (unknown) (33.51746, -112.32560)	Traffic Calming Circle Existing	Unknown Unknown	4 Approaches 0 Driveways 17.9232	Other (At-Grade) Single-Lane		ICD estimated from Google Maps linework.