Roundabouts Database

29948 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
Columbia, MO
Boone Co.
United States 		Business Loop 70 / I-70 WB Ramps / Creasy Springs Rd.
(38.96655, -92.35241) 		Roundabout
Removed 		All-Way Yield
Unknown 		5 Approaches
0 Driveways
94.7178 		Freeway Ramps (Grade-Separated)
Single-Lane 		1996 First roundabout in Missouri by Missouri DOT. Originally built in 1996 per article: https://www.voxmagazine.com/news/all-about-roundabouts-in-columbia/article_93724b2b-8b20-5228-b4de-315c5c3d2004.html. Replaced with roundabout to immediate west. ICD estimated from Google Maps linework.
Rutherford, NJ
Bergen Co.
United States 		Park Ave. / Erie Ave.
(40.82835, -74.10118) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
28.0152 		Other (At-Grade)
Single-Lane 		2004 Reconstructed as roundabout in 2004? ICD estimated from Google Maps linework.
Maplewood, NJ
Essex Co.
United States 		Midland Blvd. / Highland Ave.
(40.73043, -74.25748) 		Traffic Calming Circle
Existing 		Unknown
Unknown 		4 Approaches
0 Driveways
83.2644 		Other (At-Grade)
Single-Lane 		ICD estimated from Google Maps linework.
Maplewood, NJ
Essex Co.
United States 		Midland Blvd. / Norfolk Ave.
(40.73111, -74.25972) 		Traffic Calming Circle
Existing 		Unknown
Unknown 		4 Approaches
0 Driveways
16.2907 		Other (At-Grade)
Single-Lane 		ICD estimated from Google Maps linework.
Princeton, NJ
Mercer Co.
United States 		Faculty Rd. / Elm Dr.
(40.33888, -74.65523) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
28.2209 		Other (At-Grade)
Single-Lane 		2001 This roundabout is on University owned roads open to the public. There is a second roundabout similar in dimensions upstream on Elm Drive. Close to an at-grade rail crossing. Previously controlled by one-way stop Functional Class: Collector ICD estimated from Google Maps linework.
Belmar, NJ
Monmouth Co.
United States 		10th Ave. / B St.
(40.17772, -74.01782) 		Traffic Calming Circle
Existing 		Unknown
Unknown 		4 Approaches
0 Driveways
 Other (At-Grade)
Single-Lane
Belmar, NJ
Monmouth Co.
United States 		10th Ave. / D St.
(40.17855, -74.02169) 		Traffic Calming Circle
Existing 		Unknown
Unknown 		4 Approaches
0 Driveways
 Other (At-Grade)
Single-Lane
Summit, NJ
Union Co.
United States 		Union Pl. / Beechwood Rd.
(40.71691, -74.35757) 		Other
Existing 		Unknown
Unknown 		3 Approaches
0 Driveways
19.0099 		Other (At-Grade)
Single-Lane 		ICD estimated from Google Maps linework.
Carson City, NV
Carson City Co.
United States 		E 5th St. / Fairview Dr.
(39.16090, -119.72790) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
33.5280 		Other (At-Grade)
Single-Lane 		1999
Hinesville, GA
Liberty Co.
United States 		Washington Ave. / Memorial Dr.
(31.84992, -81.59570) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
37.5366 		Other (At-Grade)
Single-Lane 		2010 ICD estimated from Google Maps linework.
Phoenix, AZ
Maricopa Co.
United States 		South 20th Drive. / (none)
(33.37556, -112.10290) 		Traffic Calming Circle
Existing 		Unknown
Unknown 		2 Approaches
0 Driveways
16.9552 		Other (At-Grade)
Single-Lane 		2003 Neighborhood traffic calming. ICD estimated from Google Maps linework.
Boulder, CO
Boulder Co.
United States 		St. Johns St. / New Haven Ct. (Hampton Circle)
(40.04742, -105.24740) 		Roundabout
Existing 		Unknown
Unknown 		4 Approaches
0 Driveways
25.5996 		Other (At-Grade)
Single-Lane 		1997 ICD estimated from Google Maps linework.
Eagle, CO
Eagle Co.
United States 		Eby Creek Rd. / US 6
(39.65630, -106.82500) 		Roundabout
Existing 		All-Way Yield
Active Pedestrian Warning (flashing yellow) 		4 Approaches
0 Driveways
40.4579 		Other (At-Grade)
Single-Lane 		2001 Opened July 2001. Highway ref pt. 6-49.67. Previously controlled by two-way stop Functional Class: Arterial ICD estimated from Google Maps linework.
Winchester, VA
Frederick Co.
United States 		Commonwealth Ct. / (parking lot)
(39.12518, -78.19009) 		Roundabout
Existing 		Unknown
Unknown 		4 Approaches
0 Driveways
28.7222 		Other (At-Grade)
Single-Lane 		2007 ICD estimated from Google Maps linework.
Gypsum, CO
Eagle Co.
United States 		I-70 Frontage Roads / US 6
(39.65086, -106.95510) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
53.3351 		Other (At-Grade)
Single-Lane 		2004 ICD estimated from Google Maps linework.
Swinomish Tribal Community, WA
Skagit Co.
United States 		SR 20 / Padilla Heights Rd.
(48.45519, -122.51940) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
37.2280 		Other (At-Grade)
Single-Lane 		2002 The ground breaking ceremony was held October 2002. The client is the Swinomish Tribe. Opened October 2002. Functional Class: Local ICD estimated from Google Maps linework.
La Conner, WA
Skagit Co.
United States 		LaConner-Whitney Rd. / Chilberg Rd. / Morris Sr.
(48.39234, -122.48660) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
28.5504 		Other (At-Grade)
Single-Lane 		2003 Roundabout replaces a Y intersection. The center island is under private ownership and contains an exisitng granite monument. Opened September 2003. Previously controlled by one-way stop Functional Class: Arterial ICD estimated from Google Maps linework.
New London, CT
New London Co.
United States 		Shaw St. / Pequot Ave. / Nameaug St. / Driveway to Pfizer
(41.34204, -72.09873) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
35.8671 		Other (At-Grade)
Single-Lane 		2000 Functional Class: Collector ICD estimated from Google Maps linework.
Greenbelt, MD
Prince Georges Co.
United States 		Hanover Pkwy. / Village Park Dr. / Schrom Hills Community Park entrance
(38.98378, -76.87333) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
19.4960 		Other (At-Grade)
Single-Lane 		1998 Year Completed estimated (1994-2001). ICD estimated from Google Maps linework.
Superior, CO
Boulder Co.
United States 		5th Ave. / Center Dr.
(39.95764, -105.17190) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
31.1262 		Other (At-Grade)
Single-Lane 		1999 Serves Costco and Target as part of 750,000 square foot shopping center. Functional Class: Local ICD estimated from Google Maps linework.
Henrietta, NY
Monroe Co.
United States 		Andrews Memorial Dr. / Lomb Memorial Dr.
(43.08770, -77.67448) 		Roundabout
Existing 		Unknown
Unknown 		4 Approaches
0 Driveways
35.7614 		Other (At-Grade)
Single-Lane 		2003 On campus of Rochester Institute of Technology. ICD estimated from Google Maps linework.
Linton Hall, VA
Prince William Co.
United States 		Tartan Hills Pkwy. / Native Rocks Dr. / Seagate Way
(38.74593, -77.58755) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
38.1911 		Other (At-Grade)
Single-Lane 		2004 ICD estimated from Google Maps linework.
Parkville, MO
Platte Co.
United States 		National Dr. / Ridge Rd.
(39.21333, -94.70781) 		Other
Existing 		Unknown
Unknown 		3 Approaches
0 Driveways
49.9696 		Other (At-Grade)
Single-Lane 		Functional Class: Local ICD estimated from Google Maps linework.
Portsmouth, VA
N/A Co.
United States 		Crawford St. / Bart St.
(36.83202, -76.29770) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
45.8849 		Other (At-Grade)
Single-Lane 		2007 ICD estimated from Google Maps linework.
Abita Springs, LA
St. Tammany Par.
United States 		LA 59 / LA 36
(30.47826, -90.03768) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
28.8204 		Other (At-Grade)
Single-Lane 		2007 https://www.nola.com/news/traffic/article_6d2b5475-b7f9-5429-a8f7-2127046c5508.html ICD estimated from Google Maps linework.
Kennewick, WA
Benton Co.
United States 		19th Ave. / Union St.
(46.19220, -119.18040) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
27.2832 		Other (At-Grade)
Single-Lane 		2003 1/3 mile from school, primary bus and traffic route for the school, on school walking route, has adult crossing guards. Previously controlled by two-way stop Functional Class: Arterial ICD estimated from Google Maps linework.
Kennewick, WA
Benton Co.
United States 		4th Ave. / Union St.
(46.20640, -119.18010) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
26.4496 		Other (At-Grade)
Single-Lane 		2003 Completed October 2003. Functional Class: Collector ICD estimated from Google Maps linework.
Kennewick, WA
Benton Co.
United States 		Kennewick Ave. / Union St.
(46.20983, -119.18000) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
23.1420 		Other (At-Grade)
Single-Lane 		2003 Completed October 2003. Functional Class: Collector ICD estimated from Google Maps linework.
Kennewick, WA
Benton Co.
United States 		Young St. / Quinault Ave.
(46.22004, -119.21950) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
39.6646 		Other (At-Grade)
Single-Lane 		2003 Completed November 2003. Functional Class: Collector ICD estimated from Google Maps linework.
Silverdale, WA
Kitsap Co.
United States 		NW Anderson Hill Rd. / Frontier Pl. NW
(47.65368, -122.70350) 		Roundabout
Existing 		Unknown
Unknown 		3 Approaches
0 Driveways
21.7218 		Other (At-Grade)
Single-Lane 		2003 Opened September 2003. ICD estimated from Google Maps linework.
Kennewick, WA
Benton Co.
United States 		Creekstone Dr. / Irving St.
(46.18894, -119.19640) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
33.0725 		Other (At-Grade)
Single-Lane 		2005 New roadway (Creekstone) connecting into existing subdivision stub-street (Irving) on south side and new subdivision on north side Functional Class: Collector ICD estimated from Google Maps linework.
Lacey, WA
Thurston Co.
United States 		I-5 NB Off-Ramp / Galaxy Dr. / Quinault Dr.
(47.06127, -122.76890) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
32.5438 		Other (At-Grade)
Single-Lane 		2000 Completed November 1, 2000. ICD estimated from Google Maps linework.
Lacey, WA
Thurston Co.
United States 		Meridian Rd. / Orion Dr.
(47.06890, -122.74140) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
34.1661 		Other (At-Grade)
Single-Lane 		2002 Opened October 2002. Functional Class: Collector ICD estimated from Google Maps linework.
Lacey, WA
Thurston Co.
United States 		Marvin Rd. / Hawks Prairie Rd.
(47.08312, -122.78070) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
27.6509 		Other (At-Grade)
Single-Lane 		2002 Constructed September 14, 2002. Previously controlled by one-way stop Functional Class: Arterial ICD estimated from Google Maps linework.
Lawrence, KS
Douglas Co.
United States 		Overland Dr. / Congressional Dr.
(38.97474, -95.31127) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
27.8550 		Other (At-Grade)
Single-Lane 		2003 Both roads newly constructed in this area. Functional Class: Collector ICD estimated from Google Maps linework.
Oconomowoc, WI
Waukesha Co.
United States 		Wisconsin Ave. / Lake Dr.
(43.11224, -88.43968) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
33.1314 		Other (At-Grade)
Single-Lane 		2002 Opened October 15, 2002. Previously controlled by one-way stop Functional Class: Local ICD estimated from Google Maps linework.
Colorado Springs, CO
El Paso Co.
United States 		Sybilla Ln. / (parking lot)
(39.01263, -104.81160) 		Roundabout
Existing 		Unknown
Unknown 		3 Approaches
0 Driveways
25.9841 		Other (At-Grade)
Single-Lane 		2004 ICD estimated from Google Maps linework.
Colorado Springs, CO
El Paso Co.
United States 		Stout Dr. / (parking lot)
(39.01775, -104.81250) 		Roundabout
Existing 		Unknown
Unknown 		3 Approaches
0 Driveways
20.4146 		Other (At-Grade)
Single-Lane 		2003 ICD estimated from Google Maps linework.
Chico, CA
Butte Co.
United States 		W. 8th Ave. / Greenwich Dr.
(39.73875, -121.86640) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
24.7968 		Other (At-Grade)
Single-Lane 		2005 Functional Class: Local ICD estimated from Google Maps linework.
Pleasanton, CA
Alameda Co.
United States 		Watermill Rd. / Albion Rd.
(37.76511, -121.90780) 		Other
Existing 		Unknown
Unknown 		3 Approaches
0 Driveways
34.9336 		Other (At-Grade)
Single-Lane 		ICD estimated from Google Maps linework.
Pleasanton, CA
Alameda Co.
United States 		Watermill Rd. / Harcourt Way
(37.75982, -121.90820) 		Other
Existing 		Unknown
Unknown 		3 Approaches
0 Driveways
34.9361 		Other (At-Grade)
Single-Lane 		ICD estimated from Google Maps linework.
Rochester Hills, MI
Oakland Co.
United States 		Tienken Rd. / Sheldon Rd.
(42.69626, -83.12320) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
38.6224 		Other (At-Grade)
Single-Lane 		2001 Near Hart Middle School and Stoney Creek High School. Functional Class: Local ICD estimated from Google Maps linework.
Fort Collins, CO
Larimer Co.
United States 		Silverwood Dr. / Centennial Rd.
(40.54545, -105.05120) 		Traffic Calming Circle
Removed 		All-Way Yield
None 		4 Approaches
0 Driveways
31.7646 		Other (At-Grade)
Single-Lane 		Small almost mini-roundabout used for traffic calming measure. People drove through plastic posts, rendering roundabout useless; idea scrapped in less than 6 mo. Functional Class: Collector ICD estimated from Google Maps linework.
Fort Collins, CO
Larimer Co.
United States 		Mt. Vernon Ct. / New Bedford Dr. / Ticonderoga Dr.
(40.53008, -105.05420) 		Traffic Calming Circle
Existing 		Unknown
Unknown 		4 Approaches
0 Driveways
25.4175 		Other (At-Grade)
Single-Lane 		Small almost mini roundabout, not very functional. Has small central island and no splitter islands only haching and road markings. Functional Class: Collector ICD estimated from Google Maps linework.
Urbana, MD
Frederick Co.
United States 		Bennett Creek Ave. / Bennett Creek Rd.
(39.32223, -77.35181) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
33.2613 		Other (At-Grade)
Single-Lane 		2000 ICD estimated from Google Maps linework.
Colorado Springs, CO
El Paso Co.
United States 		Pine Manor Dr. / Stoneglen Dr.
(38.96827, -104.76670) 		Roundabout
Existing 		Unknown
Unknown 		4 Approaches
0 Driveways
26.9289 		Other (At-Grade)
Single-Lane 		2000 ICD estimated from Google Maps linework.
Sanford, FL
Seminole Co.
United States 		E. Seminole Blvd. / N. Park Ave.
(28.81465, -81.26805) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
20.9290 		Other (At-Grade)
Single-Lane 		2007 ICD estimated from Google Maps linework.
Denver, CO
Denver Co.
United States 		Chopper Cir. / VIP Parking / 9th St. / Access Rd
(39.74721, -105.00810) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
52.3424 		Other (At-Grade)
Single-Lane 		1999 Located at Pepsi Center arena Functional Class: Collector ICD estimated from Google Maps linework.
Urbana, MD
Frederick Co.
United States 		MD 355 / Sugarloaf Pkwy.
(39.32862, -77.35193) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
38.8013 		Other (At-Grade)
Single-Lane 		2000 ICD estimated from Google Maps linework.
Colorado Springs, CO
El Paso Co.
United States 		Windjammer Dr. / Brigantine Dr.
(38.95401, -104.77020) 		Roundabout
Existing 		Unknown
Unknown 		4 Approaches
0 Driveways
32.5070 		Other (At-Grade)
Single-Lane 		1995 ICD estimated from Google Maps linework.
Chico, CA
Butte Co.
United States 		W. 8th Ave. / Magnolia Ave.
(39.74451, -121.85270) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
25.7130 		Other (At-Grade)
Single-Lane 		2005 Functional Class: Local ICD estimated from Google Maps linework.
Modesto, CA
Stanislaus Co.
United States 		Sharon Ave. / Maid Mariane Rd.
(37.67451, -120.93050) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
20.7967 		Other (At-Grade)
Single-Lane 		2006 Opened July 27, 2006. Functional Class: Collector ICD estimated from Google Maps linework.
West Bend, WI
Washington Co.
United States 		Paradise Dr. / CTH G
(43.39770, -88.16100) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
29.5053 		Other (At-Grade)
Single-Lane 		2003 Completed September 18, 2003 Previously controlled by two-way stop Functional Class: Arterial ICD estimated from Google Maps linework.
Colorado Springs, CO
El Paso Co.
United States 		Bridle Oaks Dr. / Woodmont Dr.
(39.01377, -104.79950) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
64.0311 		Other (At-Grade)
Single-Lane 		2005 ICD estimated from Google Maps linework.
Urbana, MD
Frederick Co.
United States 		MD 355 / Sprigg St.
(39.33070, -77.35654) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
42.4954 		Other (At-Grade)
Single-Lane 		2000 ICD estimated from Google Maps linework.
Urbana, MD
Frederick Co.
United States 		Bush Creek Dr. / Major Smith Ln.
(39.33507, -77.35263) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
28.6364 		Other (At-Grade)
Single-Lane 		2000 ICD estimated from Google Maps linework.
Encinitas, CA
San Diego Co.
United States 		Santa Fe Dr. / Devonshire Dr. / Rubenstein Ave.
(33.03622, -117.28590) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
22.0272 		Other (At-Grade)
Single-Lane 		2004 Site of solo fatal crash in 2007, DUI .29%. http://www.nctimes.com/articles/2007/10/09/news/coastal/2_03_3710_8_07.txt. 11861-05. Previously controlled by two-way stop Functional Class: Collector ICD estimated from Google Maps linework.
Federal Way, WA
King Co.
United States 		S 323rd St. / 32nd Ave. S
(47.31214, -122.29250) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
44.5368 		Other (At-Grade)
Single-Lane 		2000 Opened April 2000. ICD estimated from Google Maps linework.
Albany, OR
Linn Co.
United States 		N. Albany Rd. / Gibson Hill Rd.
(44.65688, -123.11730) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
23.7877 		Other (At-Grade)
Single-Lane 		2005 Completed August 2005. Four leg added to north to extend North Albany Road. ICD estimated from Google Maps linework.
Kennewick, WA
Benton Co.
United States 		18th Ave. / Irving St.
(46.19221, -119.19620) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
42.1649 		Other (At-Grade)
Single-Lane 		2006 New roads/intersection in subdivision - completed February 2006. Functional Class: Local ICD estimated from Google Maps linework.
Lawrence, KS
Douglas Co.
United States 		28th St. / O'Connell Rd.
(38.93372, -95.20499) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
29.7292 		Other (At-Grade)
Single-Lane 		2004 Built as part of Widening of OConnell Road. Orig. T intersection, east leg currently unused. Previously controlled by one-way stop Functional Class: Collector ICD estimated from Google Maps linework.
Highland, IL
Madison Co.
United States 		US 40 / IL 160 / Poplar St.
(38.75010, -89.67197) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
40.9832 		Other (At-Grade)
Single-Lane 		2004 Roundabout operating nicely with no accidents reported during first six months of operation. Completed October 2004. Functional Class: Arterial ICD estimated from Google Maps linework.
Jackson, MS
Hinds Co.
United States 		Central St. / Buena Vista Ave.
(32.30306, -90.21358) 		Roundabout
Existing 		Unknown
Unknown 		4 Approaches
0 Driveways
 Other (At-Grade)
Single-Lane 		2005 Functional Class: Local
(unincorporated), OR
Washington Co.
United States 		NW Verboort Rd. / Martin Rd.
(45.55150, -123.07350) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
51.0173 		Other (At-Grade)
Single-Lane 		2003 Reverse curves on approaches. Designed as multilane roundabout, striped-out inner circulatory and entry/exit lanes. ICD estimated from Google Maps linework.
Billings, MT
Yellowstone Co.
United States 		Ironwood Dr. / Woodcreek Dr.
(45.81641, -108.67716) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
39.6240 		Other (At-Grade)
Single-Lane 		2003
Crozet, VA
Ablemarle Co.
United States 		Old Trail Dr. / West End Dr.
(38.06612, -78.71195) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
31.0297 		Other (At-Grade)
Single-Lane 		2005 ICD estimated from Google Maps linework.
Kaukauna, WI
Outagamie Co.
United States 		CTH J / US 41 NB Ramps
(44.30463, -88.24939) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
37.6070 		Freeway Ramps (Grade-Separated)
Single-Lane 		2010 Opened October 11, 2010. ICD estimated from Google Maps linework.
Sherwood, OR
Washington Co.
United States 		SW Meinecke Pkwy / SW Dewey Dr.
(45.35897, -122.85650) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
31.8900 		Other (At-Grade)
Single-Lane 		2003 ICD estimated from Google Maps linework.
Sherwood, OR
Washington Co.
United States 		Meinecke Pkwy. / Cedar Brook Way
(45.36180, -122.85870) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
36.0842 		Other (At-Grade)
Single-Lane 		2003 ICD estimated from Google Maps linework.
Kennewick, WA
Benton Co.
United States 		27th Ave. / Vancouver St.
(46.18394, -119.14850) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
26.4604 		Other (At-Grade)
Single-Lane 		2004 Completed November 15, 2004. Functional Class: Arterial ICD estimated from Google Maps linework.
Denali National Park, AK
Denali National Park
United States 		Denali National Park
(63.73358, -148.91550) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
34.3554 		Other (At-Grade)
Single-Lane 		2002 Date estimated. ICD estimated from Google Maps linework.
Kennewick, WA
Benton Co.
United States 		Grandridge Blvd. / Center Pkwy.
(46.22032, -119.23220) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
30.5746 		Other (At-Grade)
Single-Lane 		2006 Completed August 3, 2006. Functional Class: Collector ICD estimated from Google Maps linework.
Starkville, MS
Oktibbeha Co.
United States 		Blackjack Rd. / Oktoc Rd.
(33.44708, -88.79340) 		Roundabout
Existing 		Unknown
Unknown 		3 Approaches
0 Driveways
31.8893 		Other (At-Grade)
Single-Lane 		2002 http://www.msstate.edu/web/media/detail.php?id=1874 Previously controlled by two-way stop Functional Class: Arterial ICD estimated from Google Maps linework.
San Antonio, TX
Bexar Co.
United States 		Blanco Rd. / Fulton Ave.
(29.46156, -98.50787) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
27.4317 		Other (At-Grade)
Single-Lane 		2007 .
San Francisco, CA
San Francisco Co.
United States 		Waller St. / Steiner St.
(37.77097, -122.43190) 		Traffic Calming Circle
Existing 		All-Way Stop
None 		4 Approaches
0 Driveways
66.0853 		Other (At-Grade)
Single-Lane 		2003 Preliminary layout for neighborhodd comment Functional Class: Local ICD estimated from Google Maps linework.
Davis, CA
Yolo Co.
United States 		Shasta Dr. / Olympic Dr.
(38.55540, -121.77620) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
24.2833 		Other (At-Grade)
Single-Lane 		1999 Previously controlled by one-way stop Functional Class: Arterial ICD estimated from Google Maps linework.
Asheville, NC
Buncombe Co.
United States 		WT Weaver Blvd / University Heights
(35.61435, -82.56285) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
27.1862 		Other (At-Grade)
Single-Lane 		2002 Completed August 2002. Entrance to University of North Carolina at Asheville. Previously controlled by one-way stop Functional Class: Arterial ICD estimated from Google Maps linework.
Pleasanton, CA
Alameda Co.
United States 		Watermill Rd. / Watermill Rd.
(37.75548, -121.90970) 		Other
Existing 		Unknown
Unknown 		2 Approaches
0 Driveways
31.1610 		Other (At-Grade)
Single-Lane 		ICD estimated from Google Maps linework.
Bettendorf, IA
Scott Co.
United States 		53rd Ave. / Middle Rd.
(41.57538, -90.46408) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
37.5252 		Other (At-Grade)
Single-Lane 		2002 Right turn bypass lanes striped within roundabout. Construction cost ~$865,000. Information from website: http://www.bettendorf.lib.ia.us/publicworks/roundabout.html ICD estimated from Google Maps linework.
Salt Lake City, UT
Salt Lake Co.
United States 		South Campus Dr. / Center Campus Dr.
(40.75968, -111.84490) 		Roundabout
Existing 		All-Way Yield
At-grade Rail Crossing Signals/Gates (controlling all approaches) 		3 Approaches
0 Driveways
39.6240 		Other (At-Grade)
Single-Lane 		2003 Light rail runs through center of roundabout. Gates on both circulatory roadway and on east and west approaches.
Alpine, UT
Utah Co.
United States 		Canyon Crest Rd. / 200 West
(40.45012, -111.78150) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
36.3540 		Other (At-Grade)
Single-Lane 		2004 ICD estimated from Google Maps linework.
Millington, MD
Kent Co.
United States 		MD 291 / US 301 SB Ramps
(39.26463, -75.86641) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
31.4393 		Freeway Ramps (Grade-Separated)
Single-Lane 		1999 Opened August 1999. ICD estimated from Google Maps linework.
Millington, MD
Kent Co.
United States 		MD 291 / US 301 NB Ramps
(39.26386, -75.86260) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
28.6656 		Freeway Ramps (Grade-Separated)
Single-Lane 		1999 Opened August 1999. ICD estimated from Google Maps linework.
Scottsdale, AZ
Maricopa Co.
United States 		N 70th Pl. / E Chaparral Rd.
(33.50954, -111.92900) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
27.4320 		Other (At-Grade)
Single-Lane 		2016 A traffic calming circle was completed in 2002 on what was otherwise a TWSC intersection. Roundabout constructed in 2016. On south leg there is no entry into the roundabout but instead a yield-controlled right-turn bypass lane to prevent northbound-to-westbound cut-through traffic.
Oak Grove, MD
Prince Georges Co.
United States 		MD 193 (Watkins Park Dr.) / Oak Grove Rd.
(38.87737, -76.78108) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
38.1207 		Other (At-Grade)
Single-Lane 		2001 ICD estimated from Google Maps linework.
Temple Hills, MD
Prince Georges Co.
United States 		MD 637 (Naylor Rd.) / Good Hope Ave.
(38.84922, -76.95655) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
31.6248 		Other (At-Grade)
Single-Lane 		2001 ICD estimated from Google Maps linework.
Temple Hills, MD
Prince Georges Co.
United States 		MD 637 (Naylor Rd.) / Oxon Run Dr.
(38.84986, -76.95789) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
34.4150 		Other (At-Grade)
Single-Lane 		2001 ICD estimated from Google Maps linework.
Castle Marina, MD
Queen Annes Co.
United States 		MD 18 / Castle Marina Rd.
(38.97871, -76.28938) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
28.7819 		Other (At-Grade)
Single-Lane 		1999 Previously controlled by two-way stop ICD estimated from Google Maps linework.
Kennewick, WA
Benton Co.
United States 		Columbia Park Drive #1
(46.22221, -119.15110) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
38.8367 		Other (At-Grade)
Single-Lane 		2001 Completed February 2001. Functional Class: Local ICD estimated from Google Maps linework.
Kennewick, WA
Benton Co.
United States 		Columbia Park Drive #2
(46.22223, -119.14630) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
54.5366 		Other (At-Grade)
Single-Lane 		2001 Completed February 2001 Functional Class: Local ICD estimated from Google Maps linework.
Juneau, AK
Juneau
United States 		Douglas Hwy / North Douglas Hwy
(58.29718, -134.43280) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
38.9134 		Other (At-Grade)
Single-Lane 		2005 Previously controlled by one-way stop Functional Class: Arterial ICD estimated from Google Maps linework.
Portland, OR
Multnomah Co.
United States 		NE Mt. Hood Ave. / Frontage Rd. / PDX Airport Economy Blue Lot / PDX Airport Economy Red Lot
(45.57770, -122.55950) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
36.7822 		Other (At-Grade)
Single-Lane 		2000 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.
Scottsdale, AZ
Maricopa Co.
United States 		N. 104th St. / E. Cholla St.
(33.58976, -111.85660) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
21.8878 		Other (At-Grade)
Single-Lane 		2005 ICD estimated from Google Maps linework.
Rising Sun, MD
Cecil Co.
United States 		MD 273 (Rising Sun Rd.) / MD 276 (Jacob Tome Memorial Hwy.)
(39.69595, -76.08018) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
39.5157 		Other (At-Grade)
Single-Lane 		2003 ICD estimated from Google Maps linework.
Rosemont, MD
Frederick Co.
United States 		MD 17 / MD 180
(39.33768, -77.63950) 		Roundabout
Existing 		Unknown
Unknown 		4 Approaches
0 Driveways
30.4828 		Other (At-Grade)
Single-Lane 		2001 ICD estimated from Google Maps linework.
Tooele, UT
Tooele Co.
United States 		W 2000 N / N 70 W
(40.56555, -112.30310) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
37.1987 		Other (At-Grade)
Single-Lane 		2000 ICD estimated from Google Maps linework.
North Haven, NY
Suffolk Co.
United States 		Tyndall Road / Rte. 114 (Ferry Rd.)
(41.01303, -72.31309) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
25.2334 		Other (At-Grade)
Single-Lane 		2001 Replaced a dangerous 2-way stop. Previously controlled by two-way stop ICD estimated from Google Maps linework.
Omaha, NE
Douglas Co.
United States 		N Saddle Creek Rd. / Country Club Ave. / Seward St. / 50th St. / Happy Hollow Rd.
(41.27431, -95.99039) 		Roundabout
Existing 		Unknown
Unknown 		8 Approaches
0 Driveways
28.7235 		Other (At-Grade)
Single-Lane 		2003 Dogbone/peanut shape. ICD estimated from Google Maps linework.