Roundabouts Database Index

28979 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
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.
West Richland, WA Benton Co. United States	Bombing Range Rd. / Keene Rd. (46.26271, -119.34237)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 45.7200	Other (At-Grade) Single-Lane	2005	Free-flow bypass lane on east leg. Opened October 2005. Plans underway to replace with signalized intersection: https://www.tricitiesbusinessnews.com/2021/12/wr-traffic-circle/
Woodinville, WA King Co. United States	136th Ave. NE / Woodinville High School Entrance (47.77161, -122.15860)	Roundabout Existing	Unknown Unknown	3 Approaches 0 Driveways 25.6862	Other (At-Grade) Single-Lane	2003	Opened October 2003. ICD estimated from Google Maps linework.
University Place, WA Pierce Co. United States	64th St W / Park Entrance (47.19891, -122.56530)	Roundabout Existing	Unknown Unknown	4 Approaches 0 Driveways 28.4022	Other (At-Grade) Single-Lane	2004	Completed before July 2004. ICD estimated from Google Maps linework.
University Place, WA Pierce Co. United States	Cirque Dr. W / Alameda Ave. W / 56th St. W (47.20639, -122.51600)	Roundabout Existing	Unknown Unknown	4 Approaches 0 Driveways 54.3624	Other (At-Grade) Single-Lane	2002	Completed December 2002. ICD estimated from Google Maps linework.
University Place, WA Pierce Co. United States	40th St. W / Drexler Dr. W (47.22084, -122.53430)	Roundabout Existing	Unknown Unknown	3 Approaches 0 Driveways 31.6351	Other (At-Grade) Single-Lane	2006	Completed June 2006. ICD estimated from Google Maps linework.
Lacey, WA Thurston Co. United States	Vashon Dr. NE / Columbia Way NE (47.09724, -122.77000)	Roundabout Existing	Unknown Unknown	4 Approaches 0 Driveways 26.0175	Other (At-Grade) Single-Lane	2005	Opened December 2005. ICD estimated from Google Maps linework.
Olympia, WA Thurston Co. United States	Evergreen Pkwy. NW / McCann Plaza (47.06936, -122.97440)	Roundabout Existing	Unknown Unknown	3 Approaches 0 Driveways 42.3006	Other (At-Grade) Single-Lane	2005	Entrance to college. Opened November 2005. ICD estimated from Google Maps linework.
Olympia, WA Thurston Co. United States	14th Ave. SE / E Bay Dr. / Henderson Blvd. SE (47.02971, -122.89140)	Roundabout Existing	Unknown Unknown	4 Approaches 0 Driveways 33.3772	Other (At-Grade) Single-Lane	2005	Opened July 2005. Southbound right turn bypass lane. ICD estimated from Google Maps linework.
Sammamish, WA King Co. United States	Issaquah Pine Lake Rd. / SE 32nd Way (47.57894, -122.02810)	Roundabout Existing	Unknown Unknown	3 Approaches 0 Driveways 33.8378	Other (At-Grade) Single-Lane	2005	Opened March 2005. ICD estimated from Google Maps linework.
Sequim, WA Clallam Co. United States	N Sequim Ave. / Old Olympic Hwy. (48.09418, -123.10230)	Roundabout Existing	Unknown Unknown	4 Approaches 0 Driveways 25.5265	Other (At-Grade) Single-Lane	2005	Opened September 2005. ICD estimated from Google Maps linework.
Sequim, WA Clallam Co. United States	W Washington St. / River Rd. (48.07758, -123.13480)	Roundabout Existing	Unknown Unknown	4 Approaches 0 Driveways 31.9184	Other (At-Grade) Single-Lane	2004	Opened June 2004. Northbound right turn bypass lane. ICD estimated from Google Maps linework.
Spokane, WA Spokane Co. United States	E. Sharp Ave. / N. Columbus St. (47.66950, -117.39490)	Roundabout Existing	Unknown Unknown	4 Approaches 0 Driveways 22.5195	Other (At-Grade) Single-Lane	1992	September 1992. ICD estimated from Google Maps linework.
Tacoma, WA Pierce Co. United States	49th Ave. NE / 33rd St. NE / Norpoint Way NE (47.28643, -122.38220)	Roundabout Existing	Unknown Unknown	4 Approaches 0 Driveways 25.9249	Other (At-Grade) Single-Lane	2004	Opened December 2004. ICD estimated from Google Maps linework.
Tacoma, WA Pierce Co. United States	S Tyler St. / S 66th St. (47.19746, -122.49280)	Roundabout Existing	Unknown Unknown	4 Approaches 0 Driveways 25.9685	Other (At-Grade) Single-Lane	2005	Opened July 2005. Fatal crash August 12. 2006. 11861-05. ICD estimated from Google Maps linework.
Vancouver, WA Clark Co. United States	W. 6th St. / Esther St. (45.62572, -122.67610)	Roundabout Existing	Unknown Unknown	4 Approaches 0 Driveways 29.2336	Other (At-Grade) Single-Lane	2005	Opened June 2005. ICD estimated from Google Maps linework.
Kitchener, ON Waterloo Regional Municipality Canada	Fischer-Hallman Rd. / Huron Rd. (43.38225, -80.48878)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 50.0000	Other (At-Grade) Single-Lane	2007
Kitchener, ON Waterloo Regional Municipality Canada	Fischer-Hallman Rd. / Seabrook Dr. (43.38706, -80.49034)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 19.0946	Other (At-Grade) Single-Lane	2007	Sized as double-lane but striped as single-lane with yellow spiral hatching next to truck apron. ICD estimated from Google Maps linework.
Conway, AR Faulkner Co. United States	Courtway Dr. / Siebenmorgan Rd. (35.09868, -92.41469)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 40.0634	Other (At-Grade) Single-Lane	2007	Schools located within one block on three of four approaches Functional Class: Collector ICD estimated from Google Maps linework.
Cambridge, ON Waterloo Regional Municipality Canada	Fountain St. / Blair Rd. (43.38601, -80.38981)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 40.0000	Other (At-Grade) Single-Lane	2005
Avonport, NS Kings Canada	Trunk 1 / Hwy 101 WB Ramps / Oak Island Rd. (45.10019, -64.25748)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 60.9600	Freeway Ramps (Grade-Separated) Single-Lane	2006
Englewood, CO Arapahoe Co. United States	W. Sheri Ln. / Belleview Park (39.62281, -105.00620)	Other Existing	Unknown Unknown	3 Approaches 0 Driveways 42.3174	Other (At-Grade) Single-Lane	2001	ICD estimated from Google Maps linework.
Broomfield, CO Adams Co. United States	Zang St. / (parking lot #1) (39.92782, -105.13320)	Roundabout Existing	Unknown Unknown	4 Approaches 0 Driveways 36.6350	Other (At-Grade) Single-Lane	2001	Serves commercial development. ICD estimated from Google Maps linework.
Broomfield, CO Adams Co. United States	Zang St. / (parking lot #2) (39.92641, -105.13170)	Roundabout Existing	Unknown Unknown	4 Approaches 0 Driveways 35.7199	Other (At-Grade) Single-Lane	2001	Serves commercial development. ICD estimated from Google Maps linework.
Anchorage, AK Anchorage United States	Elmore Rd. / E 135th Ave. / South Anchorage High School (61.09869, -149.80410)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 36.3650	Other (At-Grade) Single-Lane	2004	ICD estimated from Google Maps linework.
Woodland, CA Yolo Co. United States	Promenade Dr. / Somerset Cir. (38.64501, -121.73150)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 31.7154	Other (At-Grade) Single-Lane	2007	Functional Class: Local ICD estimated from Google Maps linework.
Woodland, CA Yolo Co. United States	Campos Ave. / Mack Way / Shoemaker Ct. (38.64920, -121.73140)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 25.1843	Other (At-Grade) Single-Lane	2007	Functional Class: Local ICD estimated from Google Maps linework.
Woodland, CA Yolo Co. United States	Campos Ave. / Ortiz Ave. (38.65290, -121.73120)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 30.7792	Other (At-Grade) Single-Lane	2007	Functional Class: Local ICD estimated from Google Maps linework.
Knoxville, TN Knox Co. United States	Concord Rd. / Northshore Dr. (35.86081, -84.14137)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 32.9098	Other (At-Grade) Single-Lane	2008	http://www.knoxnews.com/news/2008/feb/20/countys-first-roundabout-opened-concord-northshore/ ICD estimated from Google Maps linework.
Palo Alto, CA Santa Clara Co. United States	Addison Ave. / Bryant St. (37.44197, -122.15540)	Traffic Calming Circle Existing	Unknown Unknown	4 Approaches 0 Driveways 15.1722	Other (At-Grade) Single-Lane		Functional Class: Local ICD estimated from Google Maps linework.
Palo Alto, CA Santa Clara Co. United States	Lytton Ave. / Fulton St. (37.45214, -122.15750)	Traffic Calming Circle Existing	Unknown Unknown	4 Approaches 0 Driveways 9.4813	Other (At-Grade) Single-Lane		Functional Class: Local ICD estimated from Google Maps linework.
Palo Alto, CA Santa Clara Co. United States	Park Blvd. / Park Ave. (37.43076, -122.14980)	Traffic Calming Circle Existing	Unknown Unknown	3 Approaches 0 Driveways 24.6585	Other (At-Grade) Single-Lane		Functional Class: Local ICD estimated from Google Maps linework.
Cupertino, CA Santa Clara Co. United States	Portal Ave. / Wheaton Dr. (37.32445, -122.01964)	Traffic Calming Circle Existing	All-Way Stop None	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane	2001	Year Completed estimated (2000-2002).
Springfield, IL Sangamon Co. United States	Capitol Ave. / 12th St. (39.79816, -89.63947)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways	Other (At-Grade) Single-Lane	2012
Hayward, CA Alameda Co. United States	Orchard Ave. / Joyce St. (37.65808, -122.07850)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 18.9103	Other (At-Grade) Single-Lane	2000	Painted splitter islands. Built as temporary in February 2000, reconstructed permanent central island 2001 (http://ci.hayward.ca.us/citygov/meetings/cca/rp/2000/rp091900-05.pdf). ICD estimated from Google Maps linework.
El Cajon, CA San Diego Co. United States	Murray Ave. / W. Main St. / Blackthorne Ave. / S. Westwind Dr. (32.79107, -116.98510)	Other Existing	Unknown Unknown	5 Approaches 0 Driveways 32.1284	Other (At-Grade) Single-Lane		ICD estimated from Google Maps linework.
Escalon, CA San Joaquin Co. United States	1st Ave. / Riesling Way (37.79437, -121.01140)	Traffic Calming Circle Existing	All-Way Yield None	4 Approaches 0 Driveways 18.8755	Other (At-Grade) Single-Lane	2000	Painted splitter islands. ICD estimated from Google Maps linework.
Coralville, IA Johnson Co. United States	12th Ave. / Forevergreen Rd. (41.72284, -91.59520)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 32.9823	Other (At-Grade) Single-Lane	2005	http://www.coralville.org/mod/press/documents/12th%20Ave%2011-18-05.pdf. Opened November 16, 2005. ICD estimated from Google Maps linework.
Conway, AR Faulkner Co. United States	Bruce St. / Farris Rd. (35.08129, -92.46307)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 40.0719	Other (At-Grade) Single-Lane	2008	Adjacent to University of Central Arkansas Campus and Sports Venues. Functional Class: Arterial ICD estimated from Google Maps linework.
Reno, NV Washoe Co. United States	Wells Ave. / Regency Way (39.50890, -119.80320)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 29.4866	Other (At-Grade) Single-Lane	2004	ICD estimated from Google Maps linework.
Brandon, MB Westman Region Canada	34th St. / Willowdale Crescent (49.83122, -99.98436)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 36.9788	Other (At-Grade) Single-Lane	2002	Before 2004. ICD estimated from Google Maps linework.
Fargo, ND Cass Co. United States	38th Ave. S / Village Ln. (46.81955, -96.86532)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 27.7874	Other (At-Grade) Single-Lane	2005	ICD estimated from Google Maps linework.
Ellijay, GA Gilmer Co. United States	River St. / Dalton St. / Main St. (34.69513, -84.48260)	Other Existing	Unknown Unknown	6 Approaches 0 Driveways 38.2967	Other (At-Grade) Single-Lane		ICD estimated from Google Maps linework.
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
Carmel, IN Hamilton Co. United States	131st St. / Oakridge St. (39.98528, -86.14577)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 36.6042	Other (At-Grade) Single-Lane	2006	ICD estimated from Google Maps linework.
Minden, NV Douglas Co. United States	Hwy 88 / County Rd. / Mahogany Rd. (38.95578, -119.77936)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 26.9337	Other (At-Grade) Single-Lane	2006	ICD estimated from Google Maps linework.
Chattanooga, TN Hamiltion Co. United States	Igou Gap Rd. / Clearview Dr. / (residential driveway) (35.02494, -85.15220)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 26.4070	Other (At-Grade) Single-Lane	2006	driveway from single family residence has a full approach on the north side Previously controlled by stop sign Functional Class: Local ICD estimated from Google Maps linework.
Chattanooga, TN Hamilton Co. United States	Goodwin Rd. / (East Brainerd Elementary School driveway) (35.02699, -85.14712)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 28.3624	Other (At-Grade) Single-Lane	2014	Proposed replacement of cloverleaf ramps with diamond ramps on SR 153 and two multi-lane roundabouts on Hixson Pike. Currently high accident area due to weaving, lack of merge areas, and nearby signals. ICD estimated from Google Maps linework.
Ottawa, ON City of Ottawa Canada	Princess Ave. / Rockcliffe Pkwy. (45.44599, -75.68909)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 54.4647	Other (At-Grade) Single-Lane	2007	ICD estimated from Google Maps linework.
Ottawa, ON City of Ottawa Canada	Beaulieu Pl. / Villeneuve Private (45.42574, -75.62828)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 20.1173	Other (At-Grade) Single-Lane	2006	Functional Class: Local ICD estimated from Google Maps linework.
Ottawa, ON City of Ottawa Canada	Beauparc Private / Villeneuve Private (45.42353, -75.62725)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 22.6328	Other (At-Grade) Single-Lane	2006	Functional Class: Local ICD estimated from Google Maps linework.
Ottawa, ON City of Ottawa Canada	Jockvale Rd. / Fable St. / Weybridge Dr. (45.27378, -75.76441)	Roundabout Existing	All-Way Yield Active Pedestrian Warning (flashing yellow)	4 Approaches 0 Driveways 32.7784	Other (At-Grade) Single-Lane	2007	Functional Class: Major Collector ICD estimated from Google Maps linework.
Ottawa, ON City of Ottawa Canada	Huntmar Rd. / Rosehill Ave. (45.28658, -75.91740)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 34.4516	Other (At-Grade) Single-Lane	2007	Functional Class: Major Collector ICD estimated from Google Maps linework.
Clearwater, FL Pinellas Co. United States	Fairmont Ave. / Fulton St. (27.98243, -82.79311)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 30.4800	Other (At-Grade) Single-Lane	2008	Opened May 2008.
Clearwater, FL Pinellas Co. United States	Ridgewood St. / Richards Ave. (27.97013, -82.76930)	Traffic Calming Circle Existing	All-Way Yield None	0 Approaches 0 Driveways 34.8091	Other (At-Grade) Single-Lane	2002	ICD estimated from Google Maps linework.
Clearwater, FL Pinellas Co. United States	Ridgewood St. / Baker Ave. (27.97012, -82.76842)	Traffic Calming Circle Existing	All-Way Yield None	0 Approaches 0 Driveways 48.5218	Other (At-Grade) Single-Lane	2002	ICD estimated from Google Maps linework.
Clearwater, FL Pinellas Co. United States	Ridgewood St. / Casler Ave. (27.97013, -82.76752)	Traffic Calming Circle Existing	All-Way Yield None	0 Approaches 0 Driveways	Other (At-Grade) Single-Lane	2002
Clearwater, FL Pinellas Co. United States	Richards Ave. / Baker Ave. / Casler Ave. (27.96847, -82.76841)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 30.4800	Other (At-Grade) Single-Lane	2002
Clearwater, FL Pinellas Co. United States	Palmetto St. / MLK Ave. (N Greenwood Ave.) (27.97542, -82.79176)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 32.0040	Other (At-Grade) Single-Lane	2004
Clearwater, FL Pinellas Co. United States	Cleveland St. / Lake Dr. (27.96550, -82.77112)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 25.9080	Other (At-Grade) Single-Lane	2008
Clearwater, FL Pinellas Co. United States	Cleveland St. / Corona Ave. (27.96546, -82.75991)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 25.9080	Other (At-Grade) Single-Lane	2008
Clearwater, FL Pinellas Co. United States	Cleveland St. / Saturn Ave. (27.96544, -82.76489)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 25.9080	Other (At-Grade) Single-Lane	2008
Montana City, MT Lewis and Clark Co. United States	SR 282 / Jackson Creek Rd. (46.54082, -111.94824)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 44.1960	Other (At-Grade) Single-Lane	2007	Opened October 2007.
Helena, MT Lewis and Clark Co. United States	Saddle Dr. / Colonial Dr. (46.57319, -111.97703)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 36.1246	Other (At-Grade) Single-Lane	2007	ICD estimated from Google Maps linework.
Missoula, MT Missoula Co. United States	Union Pacific St. / O'Leary St. / Clark Fork Ln. (46.88880, -114.04560)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 36.5760	Other (At-Grade) Single-Lane	2003
Gatineau, QC Outaouais Region Canada	Rte. 148 / Rue des Laurentides (45.52187, -75.49563)	Roundabout Existing	Unknown Unknown	4 Approaches 0 Driveways 23.4301	Other (At-Grade) Single-Lane	2005	ICD estimated from Google Maps linework.
Mecca, CA Riverside Co. United States	Hammond Rd. / 4th St. (33.57183, -116.07794)	Roundabout Existing	All-Way Yield At-grade Rail Crossing Signals/Gates (controlling approach only)	3 Approaches 0 Driveways 39.6240	Other (At-Grade) Single-Lane	2013	Double-track railroad with at-grade rail crossing on the southwest leg (4th Street) approximately 200 feet from the roundabout. A signalized intersection is located on the opposite side of the at-grade rail crossing approximately 230 feet from the rail crossing. Merging right-turn bypass lane on the southwest leg.
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.
Sammamish, WA King Co. United States	244th Ave NE / NE 8th St (47.61673, -122.01390)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 33.0083	Other (At-Grade) Single-Lane	2010	ICD estimated from Google Maps linework.
Sammamish, WA King Co. United States	244th Ave. NE / E Main Dr. (47.60881, -122.01390)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 22.5457	Other (At-Grade) Single-Lane	2010	ICD estimated from Google Maps linework.
Wenatchee, WA Chelan Co. United States	Riverside Dr. / 5th St. (47.43215, -120.31267)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 25.0455	Other (At-Grade) Single-Lane	2009	October 2009. ICD estimated from Google Maps linework.
San Diego, CA San Diego Co. United States	Bird Rock Ave. / Chelsea Ave. (32.81540, -117.27162)	Traffic Calming Circle Existing	All-Way Yield None	4 Approaches 0 Driveways 13.7160	Other (At-Grade) Single-Lane	2008	ICD estimated from Google Earth.
Granite Falls, WA Snohomish Co. United States	Granite Falls Access Rd. / Burn Rd. (NE 100th St.) (48.08656, -121.99060)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 38.2954	Other (At-Grade) Single-Lane	2010	November 2010. ICD estimated from Google Maps linework.
Granite Falls, WA Snohomish Co. United States	Granite Falls Access Rd. / Jordan Rd (48.09135, -121.97980)	Roundabout Existing	All-Way Yield None	5 Approaches 0 Driveways 55.0445	Other (At-Grade) Single-Lane	2010	November 2010. ICD estimated from Google Maps linework.
Granite Falls, WA Snohomish Co. United States	Granite Falls Access Rd. / SR 92 (48.08332, -121.99000)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 38.2978	Other (At-Grade) Single-Lane	2010	May 2010. ICD estimated from Google Maps linework.
San Diego, CA San Diego Co. United States	La Jolla Blvd. / Bird Rock Ave. (32.81559, -117.27060)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 21.0785	Other (At-Grade) Single-Lane	2008	Series of 5 roundabouts. ICD estimated from Google Maps linework.
Topeka, KS Shawnee Co. United States	Wanamaker Rd. / 53rd St. (38.97103, -95.76216)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 33.4277	Other (At-Grade) Single-Lane	2007	Previously controlled by two-way stop ICD estimated from Google Maps linework.
North Auburn, CA Placer Co. United States	Willow Creek / 1st St. (38.93790, -121.10060)	Roundabout Existing	Unknown Unknown	4 Approaches 0 Driveways 38.0883	Other (At-Grade) Single-Lane	2007	ICD estimated from Google Maps linework.
Anacortes, WA Skagit Co. United States	Commercial Ave. / SR20 Spur (48.49332, -122.61280)	Roundabout Existing	Unknown Unknown	3 Approaches 0 Driveways 34.8256	Other (At-Grade) Single-Lane	2009	ICD estimated from Google Maps linework.
Ladera Ranch, CA Orange Co. United States	Michael Rd. / Cambridge Ethereal Rd. (33.53294, -117.64460)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 26.8800	Other (At-Grade) Single-Lane	2006	Functional Class: Local ICD estimated from Google Maps linework.
San Diego, CA San Diego Co. United States	La Jolla Blvd. / Forward St. (32.81379, -117.26950)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 22.0827	Other (At-Grade) Single-Lane	2008	Series of 5 roundabouts. ICD estimated from Google Maps linework.
Bellingham, WA Whatcom Co. United States	Northwest Ave. / I-5 NB Ramp (48.78500, -122.50420)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 35.4117	Freeway Ramps (Grade-Separated) Single-Lane	2010	RT bypass lane on southbound approach. ICD estimated from Google Maps linework.
Everett, WA Snohomish Co. United States	13th St. / 1st Ave. (48.00026, -122.21570)	Roundabout Existing	Unknown Unknown	4 Approaches 0 Driveways 27.1714	Other (At-Grade) Single-Lane	2009	ICD estimated from Google Maps linework.
Ferndale, WA Whatcom Co. United States	I-5 SB Ramps / 2nd St. / Portal Way (48.85686, -122.58840)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 40.8616	Other (At-Grade) Single-Lane	2010	ICD estimated from Google Maps linework.
San Diego, CA San Diego Co. United States	La Jolla Hermosa Ave. / Forward St. (32.81402, -117.26840)	Traffic Calming Circle Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 25.0939	Other (At-Grade) Single-Lane	2008	ICD estimated from Google Maps linework.
Redding, CA Shasta Co. United States	Shasta View Dr. / Inspiration Pl. (40.59578, -122.32500)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 39.9026	Other (At-Grade) Single-Lane	2009	In a new school zone Functional Class: Arterial ICD estimated from Google Maps linework.
Corinth, MS Alcorn Co. United States	Harper Rd. / Droke Rd. (34.92347, -88.49539)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane	2010	School 1000' west of roundabout.
Fairfield Township, OH Butler Co. United States	Hamilton Mason Rd. / Liberty Fairfield Rd. (39.37527, -84.48046)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 40.6219	Other (At-Grade) Single-Lane	2008	Since completion, has reduced accidents by 80%. Replaced two offset T intersections. Previously controlled by two-way stop Functional Class: Major Collector ICD estimated from Google Maps linework.
Mosinee, WI Marathon Co. United States	Main St. / Old Highway 51 / Ranger St. (44.79026, -89.69181)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 45.7706	Other (At-Grade) Single-Lane	2010	ICD estimated from Google Maps linework.
Champaign, IL Champaign Co. United States	English Oak Dr. / Chestnut Grove Dr. (40.09811, -88.32787)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 26.4942	Other (At-Grade) Single-Lane	2005	ICD estimated from Google Maps linework.
Champaign, IL Champaign Co. United States	Crabapple Ln. / Sandcherry Dr. (40.09553, -88.32968)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 1 Driveways 30.4800	Other (At-Grade) Single-Lane	2006
Dalton Gardens, ID Kootenai Co. United States	4th St. / Hanley Ave. (47.72981, -116.77610)	Roundabout Existing	All-Way Yield Active Pedestrian Warning (flashing yellow)	4 Approaches 0 Driveways 32.1335	Other (At-Grade) Single-Lane	2009	ICD estimated from Google Maps linework.
Madison, WI Dane Co. United States	Star Dr. / Apollo Way (43.08892, -89.27760)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 26.1663	Other (At-Grade) Single-Lane	2003	Date estimated. ICD estimated from Google Maps linework.