Roundabouts Database

30016 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
Draper, UT
Salt Lake Co.
United States 		300 East / 12200 South
(40.52863, -111.88180) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
37.2193 		Other (At-Grade)
Single-Lane 		2001 ICD estimated from Google Maps linework.
Provo, UT
Utah Co.
United States 		200 West (Freedom Blvd.) / 920 South
(40.22177, -111.66230) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
25.5341 		Other (At-Grade)
Single-Lane 		2000 ICD estimated from Google Maps linework.
Provo, UT
Utah Co.
United States 		550 West / 1950 North
(40.26043, -111.66600) 		Other
Existing 		Unknown
Unknown 		5 Approaches
0 Driveways
21.8738 		Other (At-Grade)
Single-Lane 		Within parking lot; not fully developed as roundabout. Functional Class: Local ICD estimated from Google Maps linework.
Provo, UT
Utah Co.
United States 		3700 North / 300 West
(40.28282, -111.66310) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
28.2444 		Other (At-Grade)
Single-Lane 		2001 ICD estimated from Google Maps linework.
Provo, UT
Utah Co.
United States 		1375 West / 820 North
(40.24470, -111.68280) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
1 Driveways
28.2603 		Other (At-Grade)
Single-Lane 		2001 ICD estimated from Google Maps linework.
Orem, UT
Utah Co.
United States 		2000 South / Sandhill Rd.
(40.26074, -111.70420) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
33.7220 		Other (At-Grade)
Single-Lane 		2006 ICD estimated from Google Maps linework.
St. George, UT
Washington Co.
United States 		Tabernacle Rd. / Main St.
(37.10812, -113.58350) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
23.8119 		Other (At-Grade)
Single-Lane 		2001 ICD estimated from Google Maps linework.
St. George, UT
Washington Co.
United States 		E. Brigham Rd. / I-15 NB Ramps
(37.05939, -113.58350) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
42.8889 		Freeway Ramps (Grade-Separated)
Single-Lane 		2006 Raindrop-shaped interchange terminal. ICD estimated from Google Maps linework.
Park City, UT
Summit Co.
United States 		Powderwood Dr. / Factory Outlet Parking
(40.72733, -111.55255) 		Other
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
24.4374 		Other (At-Grade)
Single-Lane 		2000 Pedestrian access to central island. ICD estimated from Google Maps linework.
Park City, UT
Summit Co.
United States 		Kilby Rd. / Factory Outlet Parking
(40.73040, -111.55040) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
34.3918 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		2000 ICD estimated from Google Maps linework.
Orem, UT
Utah Co.
United States 		S 800 W / College Dr. / Sandhill Rd. (UVSC South Entrance)
(40.27592, -111.71290) 		Roundabout
Existing 		Unknown
Unknown 		4 Approaches
0 Driveways
36.4480 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		1996 ICD estimated from Google Maps linework.
Nashville, TN
Davidson Co.
United States 		Demonbreun St. / 16th Ave. / Division St. / Music Square E.
(36.15210, -86.79163) 		Other
Existing 		Unknown
Unknown 		0 Approaches
0 Driveways
54.0044 		Other (At-Grade)
Unknown 		ICD estimated from Google Maps linework.
Seattle, WA
King Co.
United States 		29th Ave. S / S. Judkins St.
(47.59217, -122.29550) 		Traffic Calming Circle
Existing 		Unknown
Unknown 		0 Approaches
0 Driveways
12.8873 		Other (At-Grade)
Unknown 		2006 ICD estimated from Google Maps linework.
Seattle, WA
King Co.
United States 		31st Ave. E / E. Denny St.
(47.62016, -122.29230) 		Traffic Calming Circle
Existing 		Unknown
Unknown 		0 Approaches
0 Driveways
64.4023 		Other (At-Grade)
Unknown 		2006 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.
Urbana, MD
Frederick Co.
United States 		MD 80 / Sugarloaf Pkwy. / Bennett Creek Blvd.
(39.32467, -77.34974) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
52.6619 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		2000 Rural 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.
Scaggsville, MD
Howard Co.
United States 		MD 216 / US 29 SB Ramps
(39.14562, -76.90418) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
53.7228 		Freeway Ramps (Grade-Separated)
Multilane (2 Lane, unspecified) 		2001 Series of 4 roundabouts. ICD estimated from Google Maps linework.
Scaggsville, MD
Howard Co.
United States 		MD 216 / US 29 NB Ramps / Ice Crystal Dr.
(39.14476, -76.89799) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
53.7234 		Freeway Ramps (Grade-Separated)
Multilane (2 Lane, unspecified) 		2001 Series of 4 roundabouts. ICD estimated from Google Maps linework.
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.
Seattle, WA
King Co.
United States 		Densmore Ave. N / N 137th St.
(47.72867, -122.33830) 		Traffic Calming Circle
Existing 		Unknown
Unknown 		0 Approaches
0 Driveways
16.8705 		Other (At-Grade)
Unknown 		2006 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.
Lacey, WA
Thurston Co.
United States 		Marvin Rd. / Britton Pkwy.
(47.06905, -122.77090) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
46.3682 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		2000 Completed September 14, 2000. Functional Class: Arterial ICD estimated from Google Maps linework.
Duvall, WA
King Co.
United States 		SR 203 (Carnation-Duvall Rd.) / 124th St. / Novelty Hill
(47.70910, -121.98440) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
40.9865 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		2004 http://www.wsdot.wa.gov/projects/sr203/NE124thNoveltyRd/ Functional Class: Arterial ICD estimated from Google Maps linework.
Gig Harbor, WA
Pierce Co.
United States 		Borgen Blvd. / SR 16 NB Ramps / Burnham Dr.
(47.35843, -122.61260) 		Roundabout
Existing 		All-Way Yield
None 		6 Approaches
0 Driveways
47.7339 		Freeway Ramps (Grade-Separated)
Multilane (2 Lane, unspecified) 		2001 Oval shaped central island. 6 legged configuration includes a on-ramp (outbound)leg. Central island is used as a roadway storm detention pond. Completed Summer/Fall 2001. Previously controlled by one-way stop ICD estimated from Google Maps linework.
Moses Lake, WA
Grant Co.
United States 		Yonezawa Blvd. / Clover Dr. / Kittleson Rd.
(47.10387, -119.25730) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
43.8990 		Other (At-Grade)
Single-Lane 		2001 Part of series of 3 roundabouts. Functional Class: Collector ICD estimated from Google Maps linework.
Moses Lake, WA
Grant Co.
United States 		Yonezawa Blvd. / Leanne Ave.
(47.10454, -119.27060) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
41.4597 		Other (At-Grade)
Single-Lane 		2001 Completed fall 2001. Part of series of 3 roundabouts. Functional Class: Collector ICD estimated from Google Maps linework.
Richland, WA
Benton Co.
United States 		Steptoe Dr. / SR 240 EB Ramps / Columbia Park Trl.
(46.23893, -119.24546) 		Roundabout
Existing 		All-Way Yield
Metering Signal 		5 Approaches
0 Driveways
49.5635 		Freeway Ramps (Grade-Separated)
Multilane (2 Lane, unspecified) 		2007 5th leg is on-ramp to SR 240. Opened November 2007. Lane configuration reduced in 2016. Modified in 2018 to add metering signal. According to local news (link below) they started metering the traffic on the westbound Columbia Park Trail approach in 2018. It only turns on when traffic coming off the freeway gets backed up. https://97rockonline.com/tri-cities-roundabout-gets-new-metered-traffic-light-wait-what/ 21442
Seattle, WA
King Co.
United States 		2nd Ave. NE / NE 91st St.
(47.69499, -122.32710) 		Traffic Calming Circle
Existing 		Unknown
Unknown 		0 Approaches
0 Driveways
8.0388 		Other (At-Grade)
Unknown 		2006 ICD estimated from Google Maps linework.
Bend, OR
Deschutes Co.
United States 		SW Mt. Washington Dr. / SW Simpson Ave.
(44.04736, -121.34400) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
32.6208 		Other (At-Grade)
Single-Lane 		2013 ICD estimated from Google Maps linework.
Town and Country, MO
St. Louis Co.
United States 		MO 141 SB Ramps / Woods Mill Rd.
(38.63523, -90.51449) 		Roundabout
Existing 		Unknown
Unknown 		3 Approaches
0 Driveways
38.2503 		Other (At-Grade)
Single-Lane 		2002 Previously controlled by one-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.
Fairbanks, AK
Fairbanks North Star
United States 		Thompson Dr / Tanana Loop Dr
(64.85564, -147.84200) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
52.2695 		Other (At-Grade)
Single-Lane 		2004 The site is on the University of Alaska, Fairbanks, school campus. The project constructed a new entrance onto the campus intersecting by means of a roundabout with an existing three leg stop controlled intersection. Previously controlled by one-way stop Functional Class: Collector ICD estimated from Google Maps linework.
Murray, KY
Calloway Co.
United States 		Gilbert Groves Dr. / Murray State University parking lot
(36.62003, -88.31861) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
22.0473 		Other (At-Grade)
Single-Lane 		2003 ICD estimated from Google Maps linework.
Bainbridge Island, WA
Kitsap Co.
United States 		High School Rd. / Madison Ave.
(47.63579, -122.52100) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
24.9484 		Other (At-Grade)
Single-Lane 		2000 Greatly reduced congestion. Initial public opposition has turned to full support. Project located next to 3 schools. Separated sidewalks, timed yellow flashing lights during school crossing. Crossing guards. Near library and shopping center. Opened October 2000. ICD estimated from Google Maps linework.
Seattle, WA
King Co.
United States 		Linden Ave. N / N. 36th St.
(47.65116, -122.34860) 		Traffic Calming Circle
Existing 		Unknown
Unknown 		0 Approaches
0 Driveways
35.4002 		Other (At-Grade)
Unknown 		2006 ICD estimated from Google Maps linework.
Seattle, WA
King Co.
United States 		Woodlawn Ave. N / N. 36th St.
(47.65051, -122.33870) 		Traffic Calming Circle
Existing 		Unknown
Unknown 		0 Approaches
0 Driveways
12.8730 		Other (At-Grade)
Unknown 		2006 ICD estimated from Google Maps linework.
Seattle, WA
King Co.
United States 		18th Ave. E. / E. Spring St.
(47.61154, -122.30890) 		Traffic Calming Circle
Existing 		Unknown
Unknown 		0 Approaches
0 Driveways
8.0516 		Other (At-Grade)
Unknown 		ICD estimated from Google Maps linework.
Seattle, WA
King Co.
United States 		4th Ave. N / N. Prospect St.
(47.62890, -122.34880) 		Traffic Calming Circle
Existing 		Unknown
Unknown 		0 Approaches
0 Driveways
10.4636 		Other (At-Grade)
Unknown 		2006 ICD estimated from Google Maps linework.
Scottsdale, AZ
Maricopa Co.
United States 		N. 74th St. / E. Sweetwater Ave.
(33.60395, -111.92155) 		Traffic Calming Circle
Existing 		All-Way Yield
None 		0 Approaches
0 Driveways
16.7640 		Other (At-Grade)
Unknown 		2003 Modified by City in 2005 to improve operation as roundabout. 21442
Guelph, ON
Wellington County
Canada 		Summerfield Dr. / Colonial Dr.
(43.51809, -80.18253) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
29.4466 		Other (At-Grade)
Single-Lane 		2001 Located in Pine Ridge East residenital subdivision Functional Class: Collector ICD estimated from Google Maps linework.
Lexington, KY
Lexington-Fayette Co.
United States 		Old Frankfort Pike / Alexandria Dr.
(38.06952, -84.55762) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
45.7200 		Other (At-Grade)
Single-Lane 		2010
Westfield, NJ
Union Co.
United States 		NJ 28 / E. Broad St. (Westfield Circle)
(40.64849, -74.35027) 		Rotary
Existing 		Unknown
Unknown 		3 Approaches
0 Driveways
42.5896 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		Functional Class: Arterial ICD estimated from Google Maps linework.
Lafayette, LA
Lafayette Par.
United States 		Settlers Trace / River Ranch Dr.
(30.17073, -92.03625) 		Roundabout
Existing 		All-Way Yield
None 		2 Approaches
0 Driveways
42.3339 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		2001 This a part of a Neo Traditional Neighborhood and the related street system. Completed June 2001. Functional Class: Collector ICD estimated from Google Maps linework.
Dumont / Cresskill, NJ
Bergen Co.
United States 		Madison Ave. / Knickerbocker Rd. (Monument)
(40.94127, -73.97681) 		Other
Existing 		Unknown
Unknown 		4 Approaches
0 Driveways
74.8804 		Other (At-Grade)
Single-Lane 		Completed May 30, 1924. Nearest traffic count was conducted on Knickerbocker Road (County Route 505) about 0.5 km from the intersection. http://tcs.state.nj.us/tmsweb/Report/h2d5c913_99_hrvolume.pdf Functional Class: Local ICD estimated from Google Maps linework.
Hebron, KY
Kenton Co.
United States 		North Bend Rd. / Graves Rd. / Old North Bend Rd.
(39.09881, -84.71849) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
46.3432 		Other (At-Grade)
Single-Lane 		2009 ICD estimated from Google Maps linework.
Seattle, WA
King Co.
United States 		Sunnyside Ave. N / N 43rd St.
(47.65912, -122.33020) 		Traffic Calming Circle
Existing 		Uncontrolled
Unknown 		4 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane 		2006
Okemos, MI
Ingham Co.
United States 		Hamilton Rd. / Marsh Rd.
(42.71625, -84.42687) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
29.8350 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		2000 ICD estimated from Google Maps linework.
Dimondale, MI
Eaton Co.
United States 		East Rd. / Creyts Rd.
(42.64743, -84.64275) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
31.6250 		Other (At-Grade)
Single-lane w/ Traversable Central Island 		2001 British-style mini-roundabout. http://www.teachamerica.com/roundabouts/RA054A_Waddell_ppr.pdf ICD estimated from Google Maps linework.
Davis, CA
Yolo Co.
United States 		5th St. / Cantrill Dr.
(38.55160, -121.72010) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
28.9547 		Other (At-Grade)
Single-Lane 		1998 Police station on SW corner. Date estimated. ICD estimated from Google Maps linework.
Davis, CA
Yolo Co.
United States 		Moore Blvd. / Rockwell Dr.
(38.56830, -121.72630) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
25.2127 		Other (At-Grade)
Single-Lane 		1999 Date estimated. Functional Class: Local ICD estimated from Google Maps linework.
Davis, CA
Yolo Co.
United States 		Moore Blvd. / Wright Blvd.
(38.56490, -121.71860) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
24.2801 		Other (At-Grade)
Single-Lane 		1999 Date estimated. Functional Class: Local ICD estimated from Google Maps linework.
Anchorage, AK
Anchorage
United States 		Southport Dr. / Maritime Loop / Washington Ave.
(61.12706, -149.92590) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
29.9886 		Other (At-Grade)
Single-Lane 		2001 The first winter resulted in several accidents, including the loss of a number of light poles around the circle. In response, minor modifications were made to the roundabout in 2002. ICD estimated from Google Maps linework.
Fort Wayne, IN
Allen Co.
United States 		Adams Center Rd. / Marion Center Rd. / Maples Rd. / Wayne Terrace
(41.00440, -85.05704) 		Roundabout
Existing 		All-Way Yield
None 		5 Approaches
0 Driveways
57.9120 		Other (At-Grade)
Single-Lane 		1995 Painted splitter islands. Year Completed estimated (before 1998).
Bloomington, IN
Monroe Co.
United States 		High St. / Winslow Rd. / Rogers Rd.
(39.13631, -86.50819) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
38.9078 		Other (At-Grade)
Single-Lane 		1999 $497,000 construction cost. ICD estimated from Google Maps linework.
Mount Pleasant, SC
Charleston Co.
United States 		Rifle Range Rd. / Bowman Rd. (Veterans Circle)
(32.80469, -79.84284) 		Roundabout
Existing 		All-Way Yield
Unknown 		4 Approaches
0 Driveways
31.1197 		Other (At-Grade)
Single-Lane 		1998 Year Completed estimated (1994-2002) ICD estimated from Google Maps linework.
Encinitas, CA
San Diego Co.
United States 		Leucadia Blvd / Hymettus Ave
(33.06470, -117.29620) 		Roundabout
Existing 		Unknown
Unknown 		4 Approaches
0 Driveways
21.0192 		Other (At-Grade)
Single-Lane 		2004 Previously controlled by two-way stop Functional Class: Collector ICD estimated from Google Maps linework.
Malta, NY
Saratoga Co.
United States 		Rte 67 (Dunning St.) / State Farm Pl.
(42.96991, -73.80676) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
1 Driveways
43.6952 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		2006 Part of a series of 5 roundabouts. ICD estimated from Google Maps linework.
Encinitas, CA
San Diego Co.
United States 		Leucadia Blvd / Hermes Ave
(33.06482, -117.30010) 		Roundabout
Existing 		Unknown
Unknown 		4 Approaches
0 Driveways
18.0164 		Other (At-Grade)
Single-Lane 		2004 Previously controlled by two-way stop Functional Class: Collector ICD estimated from Google Maps linework.
Normal, IL
McLean Co.
United States 		Beaufort St. / North St.
(40.50929, -88.98440) 		Other
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
54.8640 		Other (At-Grade)
Single-Lane 		2009 Both a traffic solution and centerpiece for significant downtown redevelopment. Pedestrian access to central island. Completed Fall 2009. https://www.landscapeperformance.org/case-study-briefs/uptown-normal-circle-and-streetscape
Amelia Island, FL
Nassau Co.
United States 		SR A1A / Beach Lagoon Rd.
(30.55541, -81.44933) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
35.0520 		Other (At-Grade)
Single-Lane 		2001 Elliptical shape. ICD = 125 ft x 105 ft. Year Completed estimated (1999-2003).
The Villages, FL
Sumter Co.
United States 		Buena Vista Blvd. / Old Mill Run
(28.90720, -81.98250) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
57.5036 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		2003 Bypass lane for southbound through movement in addition to two entry lanes. ICD estimated from Google Maps linework.
The Villages, FL
Sumter Co.
United States 		Morse Blvd. / Mariposa Way / Mission Hills Run
(28.91829, -81.96940) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
57.4974 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		2003 ICD estimated from Google Maps linework.
London, ON
Middlesex County
Canada 		Lambton Dr. / Oxford Dr.
(43.00616, -81.27515) 		Traffic Calming Circle
Existing 		Unknown
Unknown 		5 Approaches
0 Driveways
38.4291 		Other (At-Grade)
Single-Lane 		Constructed sometime in the 1970s. Functional Class: Local ICD estimated from Google Maps linework.
Seward, NE
Seward Co.
United States 		7th St. / 6th Ave. / 8th Ave.
(40.91742, -97.10029) 		Other
Existing 		Unknown
Unknown 		3 Approaches
0 Driveways
37.9050 		Other (At-Grade)
Single-Lane 		Functional Class: Local ICD estimated from Google Maps linework.
Brookfield, IL
Cook Co.
United States 		Grand Blvd. / Washington St.
(41.82755, -87.85150) 		Other
Existing 		Unknown
Unknown 		8 Approaches
0 Driveways
41.8281 		Other (At-Grade)
Single-Lane 		I am a chauffuer in the Chicago area and I use this roundabout frequently when traveling from the West Suburbs to Midway Airport. Only real traffic is on Grand Blvd at this intersection but it is in a downtown shopping district in Brookfield (13 mi WSW of Functional Class: Local ICD estimated from Google Maps linework.
St. George, UT
Washington Co.
United States 		E. Brigham Rd. / I-15 SB Ramps / Pioneer Rd.
(37.05999, -113.58560) 		Roundabout
Existing 		All-Way Yield
None 		6 Approaches
0 Driveways
78.1526 		Freeway Ramps (Grade-Separated)
Multilane (2 Lane, unspecified) 		2006 Combines interchange ramps and frontage road. ICD estimated from Google Maps linework.
Seattle, WA
King Co.
United States 		21st Ave. E / E. Republican St.
(47.62320, -122.30470) 		Traffic Calming Circle
Existing 		Unknown
Unknown 		0 Approaches
0 Driveways
5.6349 		Other (At-Grade)
Unknown 		2006 ICD estimated from Google Maps linework.
Clemmons, NC
Forsyth Co.
United States 		Styers Ferry Rd. / Utility Dr. (River Ridge Roundabout)
(36.07380, -80.39124) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
28.9598 		Other (At-Grade)
Single-Lane 		2002 Built by developer. Previously controlled by one-way stop Functional Class: Collector ICD estimated from Google Maps linework.
Willimantic, CT
Windham Co.
United States 		Eastern Rd. / (driveway) (ECSU Campus by clock tower)
(41.72001, -72.21691) 		Traffic Calming Circle
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
24.0693 		Other (At-Grade)
Single-Lane 		1999 Not properly signed and painted, but lots of potential for demonstrating this intersection concept. ICD estimated from Google Maps linework.
Stafford Springs, CT
Tolland Co.
United States 		Rte 32 / Rte 190
(41.95362, -72.30314) 		Other
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
18.6523 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		1890 Believed by some to be improperly signed and painted, though some roundabout features have been added in the past 10 years. Near railroad crossing. Year Completed estimated (1890?). ICD estimated from Google Maps linework.
Little Rock, AR
Pulaski Co.
United States 		36th St. / Romine Rd. / West Rd.
(34.72098, -92.38181) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
22.5782 		Other (At-Grade)
Single-Lane 		2001 Elementary school and church nearby. http://www.contextsensitivesolutions.org/content/case_studies/kentucky_roundabout/resources/kentucky_roundabout_pdf/ Functional Class: Arterial ICD estimated from Google Maps linework.
Boulder, CO
Boulder Co.
United States 		Arapahoe Ave. / 4th St.
(40.01294, -105.29160) 		Traffic Calming Circle
Existing 		One-Way/Two-Way Stop
None 		3 Approaches
0 Driveways
 Other (At-Grade)
Single-Lane
Boulder, CO
Boulder Co.
United States 		Arapahoe Ave. / 5th St.
(40.01295, -105.28920) 		Traffic Calming Circle
Existing 		One-Way/Two-Way Stop
None 		3 Approaches
0 Driveways
 Other (At-Grade)
Single-Lane
Boulder, CO
Boulder Co.
United States 		Balsam Ave. / 14th St.
(40.02675, -105.27840) 		Traffic Calming Circle
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
16.4619 		Other (At-Grade)
Single-Lane 		ICD estimated from Google Maps linework.
Boulder, CO
Boulder Co.
United States 		Balsam Ave. / 15th St.
(40.02675, -105.27660) 		Traffic Calming Circle
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
8.2310 		Other (At-Grade)
Single-Lane 		ICD estimated from Google Maps linework.
Boulder, CO
Boulder Co.
United States 		Evergreen Ave. / 9th St.
(40.03106, -105.28560) 		Traffic Calming Circle
Existing 		Unknown
None 		4 Approaches
0 Driveways
16.4609 		Other (At-Grade)
Single-Lane 		ICD estimated from Google Maps linework.
Boulder, CO
Boulder Co.
United States 		Kings Ridge Blvd. / Edison Ave.
(40.03098, -105.23950) 		Other
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
23.7768 		Other (At-Grade)
Single-Lane 		ICD estimated from Google Maps linework.
Boulder, CO
Boulder Co.
United States 		Kings Ridge Blvd. / Franklin Dr.
(40.03237, -105.23960) 		Other
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
27.4342 		Other (At-Grade)
Single-Lane 		ICD estimated from Google Maps linework.
Boulder, CO
Boulder Co.
United States 		Maxwell Ave. / 6th St.
(40.02176, -105.28860) 		Traffic Calming Circle
Existing 		One-Way/Two-Way Stop
None 		4 Approaches
0 Driveways
12.8046 		Other (At-Grade)
Single-Lane 		ICD estimated from Google Maps linework.
Boulder, CO
Boulder Co.
United States 		Pearl St. / 4th St.
(40.01571, -105.29050) 		Traffic Calming Circle
Existing 		Unknown
None 		4 Approaches
0 Driveways
20.1234 		Other (At-Grade)
Single-Lane 		ICD estimated from Google Maps linework.
Boulder, CO
Boulder Co.
United States 		Pearl St. / Mid-Block
(40.01501, -105.29390) 		Traffic Calming Circle
Existing 		Unknown
None 		2 Approaches
0 Driveways
16.4647 		Other (At-Grade)
Single-Lane 		Facilitates U-turns at west end of Pearl Street ICD estimated from Google Maps linework.
Boulder, CO
Boulder Co.
United States 		Pine St. / 15th St.
(40.02072, -105.27670) 		Traffic Calming Circle
Existing 		Unknown
None 		4 Approaches
0 Driveways
16.4634 		Other (At-Grade)
Single-Lane 		ICD estimated from Google Maps linework.
Boulder, CO
Boulder Co.
United States 		Pine St. / 17th St.
(40.02126, -105.27410) 		Traffic Calming Circle
Existing 		Unknown
None 		4 Approaches
0 Driveways
10.9755 		Other (At-Grade)
Single-Lane 		ICD estimated from Google Maps linework.
Aspen, CO
Pitkin Co.
United States 		SR 82 / Maroon Creek Rd. / Castle Creek Rd.
(39.19557, -106.84025) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
60.9600 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		2000