Roundabouts Database

29616 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
(unincorporated), OR
Clackamas Co.
United States 		SE 147th Ave. / Oregon Trail Dr. / Hines Dr. / Sieben Pkwy.
(45.42280, -122.51240) 		Other
Existing 		All-Way Stop
None 		4 Approaches
0 Driveways
34.3688 		Other (At-Grade)
Single-Lane 		ICD estimated from Google Maps linework.
Bend, OR
Deschutes Co.
United States 		SW Century Dr. / SW Colorado Ave. / SW Chandler Ave.
(44.04180, -121.33200) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
57.9120 		Other (At-Grade)
Single-Lane 		1999 Completed Fall 1999. One leg comes in at 60 degree angle. Right-turn bypass lane part of conceptual design but removed for final. First modern roundabout in Oregon.
Bellevue, WA
King Co.
United States 		W. Lake Sammamish Pkwy. SE / Lakemont Blvd. SE
(47.56776, -122.09980) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
35.4567 		Other (At-Grade)
Single-Lane 		1997 Revised August 2005. Previously controlled by two-way stop Functional Class: Arterial ICD estimated from Google Maps linework.
Malta, NY
Saratoga Co.
United States 		Rte 67 (Dunning St.) / US 9
(42.97116, -73.79296) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
50.2920 		Other (At-Grade)
Multilane (2 Lane, 2x2 max) 		2006 Part of a series of 5 roundabouts.
Portland, OR
Multnomah Co.
United States 		NW 25th Ave. / NW Overton St.
(45.53190, -122.70270) 		Traffic Calming Circle
Existing 		One-Way/Two-Way Stop
None 		4 Approaches
0 Driveways
44.3420 		Other (At-Grade)
Single-Lane 		1988 Completed 9/30/1988. ICD estimated from Google Maps linework.
Portland, OR
Multnomah Co.
United States 		NW 25th Ave. / NW Marshall St.
(45.53040, -122.70270) 		Traffic Calming Circle
Existing 		One-Way/Two-Way Stop
None 		4 Approaches
0 Driveways
62.7498 		Other (At-Grade)
Single-Lane 		1988 Completed 9/30/1988. ICD estimated from Google Maps linework.
Provo, UT
Utah Co.
United States 		Riverside Ave. / W 1720 North
(40.25703, -111.66810) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
21.8749 		Other (At-Grade)
Single-Lane 		2000 ICD estimated from Google Maps linework.
Clackamas, OR
Clackamas Co.
United States 		Monterey Ave. / Stevens Rd.
(45.43780, -122.56390) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
36.8738 		Other (At-Grade)
Single-Lane 		2006 Fourth leg serves New Hope Community Church parking lot. ICD estimated from Google Maps linework.
Abingdon, MD
Harford Co.
United States 		Tollgate Rd. / Montrose Way
(39.48198, -76.32751) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
28.5762 		Other (At-Grade)
Single-Lane 		2003 Elementary school and library to north, another school to south. Functional Class: Collector ICD estimated from Google Maps linework.
Portland, OR
Multnomah Co.
United States 		NE Cesar E Chavez Blvd. (NE 39th Ave.) / NE Glisan St.
(45.52640, -122.62300) 		Other
Existing 		All-Way Stop
None 		4 Approaches
0 Driveways
68.6113 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		Stop-controlled entries into circle. Bus stop within circulatory roadway. Historical rotary with stop control. ICD estimated from Google Maps linework.
Beaverton, OR
Washington Co.
United States 		SW Teal Blvd. / SW 155th Ave. / SW Nutcracker Ct.
(45.44060, -122.83760) 		Other
Existing 		All-Way Stop
None 		4 Approaches
0 Driveways
37.7099 		Other (At-Grade)
Single-Lane 		Characteristics of a roundabout, but yield signs replaced with stop signs in 1998. ICD estimated from Google Maps linework.
Canmore, AB
Central Alberta
Canada 		Three Sisters Pkwy. / Stewart Creek Dr.
(51.05031, -115.31370) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
33.7860 		Other (At-Grade)
Single-Lane 		2008 ICD estimated from Google Maps linework.
Arcata, CA
Humboldt Co.
United States 		Samoa Blvd. / Union St.
(40.86140, -124.07730) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
35.2273 		Other (At-Grade)
Single-Lane 		1999 Functional Class: Arterial ICD estimated from Google Maps linework.
Bel Air, MD
Harford Co.
United States 		Tollgate Rd. / Westover Ln. / Crisfield Dr.
(39.46859, -76.32162) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
26.7377 		Other (At-Grade)
Single-Lane 		2002 http://www.teachamerica.com/roundabouts/RA058B_ppr_Statmeyer.pdf#search=%22bel%20air%20roundabout%22 Previously controlled by two-way stop Functional Class: Collector ICD estimated from Google Maps linework.
Arcata, CA
Humboldt Co.
United States 		Samoa Blvd. / Buttermilk Ln.
(40.85710, -124.07250) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
36.1329 		Other (At-Grade)
Single-Lane 		1999 Functional Class: Arterial ICD estimated from Google Maps linework.
Lutherville-Timonium, MD
Baltimore Co.
United States 		MD 139 (Charles St.) / Bellona Ave.
(39.41790, -76.62900) 		Roundabout
Removed 		All-Way Yield
None 		4 Approaches
0 Driveways
28.9560 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		1999 Two-lane circulatory roadway across northern half.
Copley Township, OH
Summit Co.
United States 		Ridgewood Rd. / Hametown Rd.
(41.11395, -81.66791) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
25.1947 		Other (At-Grade)
Single-Lane 		2006 Opened August 21, 2006. ICD estimated from Google Maps linework.
Huntsville, AL
Madison Co.
United States 		Old Monrovia Rd. / Providence Main St. / Indian Creek Rd.
(34.75765, -86.68776) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
34.3429 		Other (At-Grade)
Single-Lane 		2004 Single-lane with right-turn only lanes. Built as staged construction with potential to be multilane. ICD estimated from Google Maps linework.
Camp Verde, AZ
Yavapai Co.
United States 		Middle Verde / Cliff Castle
(34.60927, -111.86130) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
37.3535 		Other (At-Grade)
Single-Lane 		2005 ICD estimated from Google Maps linework.
De Pere, WI
Brown Co.
United States 		Grant St. (CTH EE) / Lawrence Dr.
(44.44511, -88.09367) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
29.8430 		Other (At-Grade)
Single-Lane 		2008 Opened September 30, 2008. ICD estimated from Google Maps linework.
Durango, CO
La Plata Co.
United States 		Jenkins Ranch Rd. / Kennebec Dr.
(37.29216, -107.84010) 		Roundabout
Existing 		Unknown
Unknown 		4 Approaches
0 Driveways
23.7539 		Other (At-Grade)
Single-Lane 		2003 ICD estimated from Google Maps linework.
Dawsonville, GA
Dawson Co.
United States 		SR 9E (Lumpkin Campground Rd.) / SR 318 (Dawson Forrest Rd.)
(34.35427, -84.05168) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
42.6720 		Other (At-Grade)
Single-Lane 		2006
Oakwood, GA
Hall Co.
United States 		Landrum Education Dr. / Frontage Rd. / Mathis Dr.
(34.23434, -83.86434) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
35.0520 		Other (At-Grade)
Single-Lane 		2007 Gainesville College.
Pearl, MS
Rankin Co.
United States 		MS 475 (Airport Rd.) / Old Brandon Rd.
(32.29057, -90.07133) 		Roundabout
Existing 		Unknown
Unknown 		4 Approaches
0 Driveways
34.3273 		Other (At-Grade)
Single-Lane 		1997 Use of paint to achieve (?) deflection. ICD estimated from Google Maps linework.
Gorham, ME
Cumberland Co.
United States 		US 202 / Rte. 4 / Rte. 237
(43.72846, -70.42525) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
25.0285 		Other (At-Grade)
Single-Lane 		1997 Previously controlled by two-way stop ICD estimated from Google Maps linework.
(unincorporated), MD
Prince Georges Co.
United States 		Ft. Washington Rd. / Swan Creek Rd.
(38.72498, -77.00491) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
25.1576 		Other (At-Grade)
Single-Lane 		1997 Fourth leg added. Year Completed estimated (before 2001). ICD estimated from Google Maps linework.
Wall, NJ
Monmouth Co.
United States 		NJ 35 / Atlantic Ave. (Brielle Circle)
(40.13232, -74.06525) 		Rotary
Existing 		Other
Unknown 		4 Approaches
0 Driveways
129.6649 		Other (At-Grade)
Single-Lane 		Traffic circle conversion ICD estimated from Google Maps linework.
Southampton, NJ
Burlington Co.
United States 		US 206 / NJ 70 (Red Lion Circle)
(39.88715, -74.74104) 		Rotary
Existing 		Unknown
Unknown 		4 Approaches
0 Driveways
136.5464 		Other (At-Grade)
Single-Lane 		Traffic circle conversion Functional Class: Arterial ICD estimated from Google Maps linework.
Stuart, FL
Martin Co.
United States 		N. Colorado Ave. / E. Osceola St.
(27.19860, -80.25300) 		Traffic Calming Circle
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
32.9303 		Other (At-Grade)
Single-Lane 		ICD estimated from Google Maps linework.
Cedar Lake Township, MN
Scott Co.
United States 		SH 13 (Langford Ave.) / CR 2 (260th St.)
(44.57259, -93.50546) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
45.9429 		Other (At-Grade)
Single-Lane 		2005 Rural location, intersection of two 55-mph facilities. Previous 2-way stop had 2 fatal crashes and 50 injury crashes in 5 years. Opened to traffic in September 2005. During 12 months after opening, 1 reported crash involving single motorcycle running off road. Previously controlled by two-way stop Functional Class: Arterial ICD estimated from Google Maps linework.
Topeka, KS
Shawnee Co.
United States 		Rice Rd. / I-70 WB Ramps / Sycamore Dr.
(39.03610, -95.62310) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
44.5293 		Freeway Ramps (Grade-Separated)
Single-Lane 		2000 Part of a major realignment of I-70 and K-4. Sycamore Drive is one way with two westbound lanes (into the roundabout). Partial cloverleaf AB interchange type. Completed October 2000. ICD estimated from Google Maps linework.
Topeka, KS
Shawnee Co.
United States 		Rice Rd. / I-70 EB Ramps / Cyprus Drive
(39.03190, -95.62320) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
52.8817 		Freeway Ramps (Grade-Separated)
Single-Lane 		2000 Part of a major realignment of I-70 and K-4. Cyprus Drive is One Way Eastbound (away from the roundabout). Partial cloverleaf AB interchange type. Completed October 2000. ICD estimated from Google Maps linework.
Brattleboro, VT
Windham Co.
United States 		Rte 9 / Rte 5
(42.88500, -72.55670) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
51.8160 		Other (At-Grade)
Multilane (2 Lane, 2x2 max) 		1999 Adjacent to I-89. Heavy truck volume (>7%).
Lakewood, CO
Jefferson Co.
United States 		Arbutus Dr. / Red Rocks Community College
(39.71903, -105.14840) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
36.7465 		Other (At-Grade)
Single-Lane 		2001 Functional Class: Collector ICD estimated from Google Maps linework.
Port St. Lucie, FL
St. Lucie Co.
United States 		SE Westmoreland Blvd. / Pine Valley St.
(27.25530, -80.30157) 		Other
Existing 		Unknown
Unknown 		4 Approaches
0 Driveways
72.1975 		Other (At-Grade)
Single-Lane 		ICD estimated from Google Maps linework.
Fort Pierce, FL
St. Lucie Co.
United States 		Avenue A / N Indian River Dr.
(27.44907, -80.32326) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
28.6165 		Other (At-Grade)
Single-Lane 		1997 http://www.walkinginfo.org/pedsafe/casestudy.cfm?CS_NUM=14. Year Completed estimated (1994-1999). ICD estimated from Google Maps linework.
Malta, NY
Saratoga Co.
United States 		Rte 67 (Dunning St.) / Kelch Dr. / Blacksmith Dr. (Malta Commons)
(42.97068, -73.79804) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
50.2920 		Other (At-Grade)
Multilane (2 Lane, 2x2 max) 		2006 Part of a series of 5 roundabouts.
Arcata, CA
Humboldt Co.
United States 		12th St. / I St.
(40.87160, -124.08700) 		Traffic Calming Circle
Existing 		Unknown
Unknown 		4 Approaches
0 Driveways
48.7687 		Other (At-Grade)
Single-Lane 		ICD estimated from Google Maps linework.
Goshen, CT
Litchfield Co.
United States 		Rte. 4 / Rte. 63
(41.83185, -73.22539) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
25.9080 		Other (At-Grade)
Single-Lane 		2002 Painted splitter islands.
Rochester, MI
Oakland Co.
United States 		Tienken Rd. / Runyon Rd. / Washington Rd.
(42.69743, -83.11135) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
43.0105 		Other (At-Grade)
Single-Lane 		1999 Total cost: $353,000. Completed July 1999. Functional Class: Arterial ICD estimated from Google Maps linework.
Arcata, CA
Humboldt Co.
United States 		13th St. / J St.
(40.87260, -124.08780) 		Traffic Calming Circle
Existing 		Unknown
Unknown 		4 Approaches
0 Driveways
11.7404 		Other (At-Grade)
Single-Lane 		ICD estimated from Google Maps linework.
Greenwich, CT
Fairfield Co.
United States 		King St. / Rye Lake Ave.
(41.07508, -73.70280) 		Roundabout
Removed 		All-Way Yield
None 		4 Approaches
0 Driveways
 Other (At-Grade)
Single-Lane 		2006 Temporary roundabout installed May 12, 2004. Functional Class: Local.
Madison, CT
New Haven Co.
United States 		Rte. 80 / Rte. 79
(41.35976, -72.63807) 		Rotary
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
98.6077 		Other (At-Grade)
Single-Lane 		Old traffic circle converted to yield on entry. ICD estimated from Google Maps linework.
Las Vegas (Summerlin), NV
Clark Co.
United States 		Village Center Dr. / Meadow Hills Dr.
(36.19350, -115.30070) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
59.4360 		Other (At-Grade)
Multilane (2 Lane, 2x1 max) 		1991 Add-lane right-turn bypass lane on north leg.
Fairmont, WV
Marion Co.
United States 		WV 273 (State St.) / Haymond St.
(39.47601, -80.13599) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
54.8640 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		2010 Detectable warning surfaces along entire length of narrow pedestrian ramp.
East Lansing, MI
Ingham Co.
United States 		Bogue St. / Shaw Ln.
(42.72575, -84.47185) 		Roundabout
Removed 		All-Way Yield
None 		4 Approaches
0 Driveways
60.9600 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		2014 Roundabout built in 2000, removal date estimated (2013-2015).
Hartland, MI
Livingston Co.
United States 		Hartland Rd. / Rovey Dr.
(42.63682, -83.74883) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
38.6594 		Other (At-Grade)
Single-Lane 		2009 ICD estimated from Google Maps linework.
Davis, CA
Yolo Co.
United States 		Anderson Rd. / Alvarado Ave.
(38.56210, -121.75850) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
25.2149 		Other (At-Grade)
Single-Lane 		1997 Moderate to high pedestrian and bicycle volume. Located in residential area frequented by commuters to University of California at Davis. ICD estimated from Google Maps linework.
New London, CT
New London Co.
United States 		Shaw St. / Howard St. / Willets Ave.
(41.34284, -72.09972) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
34.9700 		Other (At-Grade)
Single-Lane 		2000 ICD estimated from Google Maps linework.
University Place, WA
Pierce Co.
United States 		Grandview Dr. / Olympic Blvd.
(47.22188, -122.55790) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
25.1454 		Other (At-Grade)
Single-Lane 		1997 Curtis High School and Curtis Junior High School on NE corner of roundabout. Opened August 1997. Functional Class: Arterial ICD estimated from Google Maps linework.
Kennewick, WA
Benton Co.
United States 		27th Ave. / Union St. / Southridge Blvd / W Creekstone Dr.
(46.18497, -119.18040) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
40.5168 		Other (At-Grade)
Single-Lane 		2000 Completed August 25, 2000. Right-turn bypass on WB approach. Was 3-leg intersection; fourth leg added to west as part of project. Previously controlled by two-way stop Functional Class: Arterial ICD estimated from Google Maps linework.
Seymour, CT
New Haven Co.
United States 		Rte. 188 / Rte. 334 (Great Hill Rd.) / Holbrook Rd.
(41.37857, -73.12669) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
35.8466 		Other (At-Grade)
Single-Lane 		2016 Previous traffic circle was upgraded to modern roundabout design guidelines. 21442
Scottsdale, AZ
Maricopa Co.
United States 		N. Marshall Way / E. Main St.
(33.49311, -111.92830) 		Other
Existing 		Unknown
Unknown 		4 Approaches
0 Driveways
22.9083 		Other (At-Grade)
Single-Lane 		ICD estimated from Google Maps linework.
Bisbee, AZ
Cochise Co.
United States 		Bisbee Rd. / SR 80 / SR 92
(31.42830, -109.89230) 		Rotary
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
104.9686 		Other (At-Grade)
Single-Lane 		ICD estimated from Google Maps linework.
Kingston, NY
Ulster Co.
United States 		I-587 / Rte 28 / I-87 Ramps / Washington Ave.
(41.94362, -74.02840) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
60.9600 		Freeway Ramps (Grade-Separated)
Multilane (2 Lane, 2x2 max) 		2000 A 600 ft diameter traffic circle was replaced by 200 ft diameter roundabout. At Exit 19 from I-87. I-587 terminates in roundabout.
Windsor, CT
Hartford Co.
United States 		Hayden Station Rd. / Lancaster Dr. / Center St.
(41.89280, -72.63409) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
24.8935 		Other (At-Grade)
Single-Lane 		1998 Functional Class: Collector. Year Completed estimated (1994-2003). ICD estimated from Google Maps linework.
Manhattan, KS
Riley Co.
United States 		Gary Ave. / Candlewood Dr.
(39.21087, -96.61885) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
21.2841 		Other (At-Grade)
Single-Lane 		1997 Considered to be the First Modern Roundabout in the State of Kansas. Previously controlled by two-way stop Functional Class: Collector ICD estimated from Google Maps linework.
Bend, OR
Deschutes Co.
United States 		Brookswood Blvd. / Powers Rd.
(44.02886, -121.32130) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
29.1961 		Other (At-Grade)
Single-Lane 		2013 ICD estimated from Google Maps linework.
Litchfield Park, AZ
Maricopa Co.
United States 		W. Palmilla Blvd. / W. Alvarado Dr.
(33.46978, -112.35190) 		Traffic Calming Circle
Existing 		Unknown
None 		4 Approaches
0 Driveways
23.9107 		Other (At-Grade)
Single-Lane 		ICD estimated from Google Maps linework.
Moses Lake, WA
Grant Co.
United States 		Yonezawa Blvd. / S. Division St. / W. Belmont Ave.
(47.10438, -119.27860) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
43.0857 		Other (At-Grade)
Single-Lane 		2001 Pedestrian crossing has z-shape, with exit closer to roundabout than entrance. Part of series of 3 roundabouts. Previously controlled by one-way stop Functional Class: Collector ICD estimated from Google Maps linework.
Litchfield Park, AZ
Maricopa Co.
United States 		Wigwam Creek Blvd. / N. Rattler Way
(33.51643, -112.32870) 		Traffic Calming Circle
Existing 		Unknown
Unknown 		4 Approaches
0 Driveways
16.9277 		Other (At-Grade)
Single-Lane 		2004 ICD estimated from Google Maps linework.
Columbia, MD
Howard Co.
United States 		Golden Straw Ln. / Davis Rd.
(39.21597, -76.81084) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
 Other (At-Grade)
Single-lane w/ Traversable Central Island 		2000 Completed April 28, 2000. Pedestrian ramps into circulatory roadway.
Lawrence, KS
Douglas Co.
United States 		E. 19th St. / Barker Ave.
(38.95003, -95.23283) 		Roundabout
Existing 		All-Way Yield
Unknown 		4 Approaches
0 Driveways
16.7188 		Other (At-Grade)
Single-Lane 		2004 Functional Class: Arterial ICD estimated from Google Maps linework.
Boynton Beach, FL
Palm Beach Co.
United States 		Hagen Ranch Rd. / Majestic Palm Dr. / Palm Isles Dr.
(26.53700, -80.16410) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
38.4660 		Other (At-Grade)
Single-Lane 		2004 ICD estimated from Google Maps linework.
Seattle, WA
King Co.
United States 		61st Ave. S / S Norfolk St.
(47.51337, -122.25705) 		Traffic Calming Circle
Existing 		Unknown
Unknown 		4 Approaches
0 Driveways
 Other (At-Grade)
Single-Lane 		2006
Truckee, CA
Nevada Co.
United States 		Brockway Rd. / Martis Valley Rd.
(39.32135, -120.16269) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
39.6240 		Other (At-Grade)
Single-Lane 		2006
Tampa (Ybor City), FL
Hillsborough Co.
United States 		Channelside Dr. / Cumberland Ave.
(27.94497, -82.44576) 		Roundabout
Existing 		All-Way Yield
Unknown 		4 Approaches
0 Driveways
54.8640 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		1995 Right-turn-only lane on north leg.
Lawrence, KS
Douglas Co.
United States 		24th Pl. / Inverness Dr.
(38.94105, -95.29808) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
25.0814 		Other (At-Grade)
Single-Lane 		2001 Approved by Commission over neighborhood opposition. Was a 3 leg intersection prior to construction. Near Sunflower Elementary School and Southwest Junior High School. Functional Class: Collector ICD estimated from Google Maps linework.
Phoenix, AZ
Maricopa Co.
United States 		Pointe Pkwy. / S 48th St.
(33.37162, -111.97410) 		Roundabout
Existing 		All-Way Yield
Unknown 		4 Approaches
0 Driveways
39.6240 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		2000
Greeley, CO
Weld Co.
United States 		Promontory Cir. / W. 16th St.
(40.41505, -104.85090) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
42.6720 		Other (At-Grade)
Multilane (2 Lane, 2x2 max) 		2004 4 roundabouts in series; 6 in vicinity.
Seattle, WA
King Co.
United States 		61st Ave. S / S. Cooper St.
(47.51166, -122.25710) 		Traffic Calming Circle
Existing 		Uncontrolled
Unknown 		4 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane 		2006
Boynton Beach, FL
Palm Beach Co.
United States 		Hagen Ranch Rd. / Treviso Ln.
(26.54100, -80.16380) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
25.6431 		Other (At-Grade)
Single-Lane 		1999 ICD estimated from Google Maps linework.
Crozet, VA
Ablemarle Co.
United States 		Old Trail Dr. / (unknown #2)
(38.05907, -78.71125) 		Roundabout
Existing 		Unknown
Unknown 		4 Approaches
0 Driveways
30.0923 		Other (At-Grade)
Single-Lane 		2005 ICD estimated from Google Maps linework.
Ridgeland, MS
Madison Co.
United States 		Old Agency Rd / Highland Colony Pkwy
(32.43125, -90.14893) 		Roundabout
Existing 		Unknown
Unknown 		4 Approaches
0 Driveways
47.3786 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		2004 Planned in association with interchange improvements at I-55/Old Agency Rd. Functional Class: Collector ICD estimated from Google Maps linework.
Bend, OR
Deschutes Co.
United States 		NW 9th St. / NW Newport Ave. / NW Nashville Ave.
(44.06240, -121.32450) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
32.6125 		Other (At-Grade)
Single-Lane 		2005 Completed in August 2005. Intersection previously had five legs. Roundabout changes one leg prior to the roundabout to right in/out and redirects another leg to the roundabout. Located near Grade School on Newport Avenue. ICD estimated from Google Maps linework.
Fort Worth, TX
Tarrant Co.
United States 		Benbrook Circle [US 377 / TX 183 / Camp Bowie Blvd.]
(32.71704, -97.44314) 		Rotary
Existing 		Other
Unknown 		4 Approaches
2 Driveways
304.8000 		Other (At-Grade)
Multilane (3+ Lane) 		1957 Oval shape. ICD = 1000 ft x 650 ft. Circulating traffic yields to entering traffic on north leg.
Culloden, GA
Monroe Co.
United States 		SR 7-US 341 / SR 74
(32.87954, -84.09019) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
39.1175 		Other (At-Grade)
Single-Lane 		2008 Functional Class: Rural ICD estimated from Google Maps linework.
Orange, CA
Orange Co.
United States 		Chapman Ave. / Glassell St.
(33.78788, -117.85310) 		Other
Existing 		Unknown
Unknown 		4 Approaches
0 Driveways
70.4752 		Other (At-Grade)
Single-Lane 		Old school traffic circle, pedestrian park in the middle, cars park along the sides. ICD estimated from Google Maps linework.
Olathe, KS
Johnson Co.
United States 		Sheridan Rd. / Rogers Rd.
(38.87200, -94.79430) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
43.7027 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		2000 ICD estimated from Google Maps linework.
Olathe, KS
Johnson Co.
United States 		Sheridan Rd. / Ridgeview Rd. / Dennis Ave.
(38.87270, -94.79730) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
22.3160 		Other (At-Grade)
Single-Lane 		2001 Completed April 2001. ICD estimated from Google Maps linework.
Olathe, KS
Johnson Co.
United States 		Sheridan Rd. / Clairborne Rd.
(38.87020, -94.79250) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
22.3168 		Other (At-Grade)
Single-Lane 		2001 ICD estimated from Google Maps linework.
Parkville, MO
Platte Co.
United States 		MO 45 (Tom Watson Pkwy.) / National Dr.
(39.21016, -94.70027) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
48.1210 		Other (At-Grade)
Single-Lane 		2000 Functional Class: Arterial ICD estimated from Google Maps linework.
Park City, UT
Summit Co.
United States 		Rte 224 (Deer Valley Drive) / Heber Avenue / Marsac Avenue
(40.64572, -111.49500) 		Roundabout
Existing 		Unknown
Unknown 		4 Approaches
0 Driveways
46.2161 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		2000 See: www.Roundaboutsusa.com Information as reported in Salt Lake Tribune article: http://www.sltrib.com/2000/Sep/09142000/utah/22072.htm Previously controlled by two-way stop Functional Class: Arterial ICD estimated from Google Maps linework.
Maplewood, MN
Ramsey Co.
United States 		Kennard St. / Legacy Pkwy.
(45.03317, -93.03062) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
37.1373 		Other (At-Grade)
Single-Lane 		2004 Site has RT pavement arrows at entrance line. ICD estimated from Google Maps linework.
(unincorporated), CO
Douglas Co.
United States 		Ridgegate Pkwy. / Ridgegate Cir. / Commons St.
(39.53187, -104.88300) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
53.4267 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		2006 Part of transit-oriented development near future light-rail station ICD estimated from Google Maps linework.
(unincorporated), CO
Douglas Co.
United States 		Ridgegate Pkwy. / Ridgegate Cir. / Park Meadows Blvd.
(39.52945, -104.87450) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
54.3498 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		2006 Part of transit-oriented development near future light-rail station ICD estimated from Google Maps linework.
Lawrence, KS
Douglas Co.
United States 		Monterey Way / Peterson Rd.
(38.98607, -95.28841) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
27.8505 		Other (At-Grade)
Single-Lane 		2005 ICD estimated from Google Maps linework.
Tulsa, OK
Tulsa Co.
United States 		E. Admiral Pl. / Mingo Rd.
(36.16057, -95.86876) 		Rotary
Existing 		All-Way Yield
Unknown 		4 Approaches
0 Driveways
114.7468 		Other (At-Grade)
Single-Lane 		Functional Class: Arterial ICD estimated from Google Maps linework.
Topeka, KS
Shawnee Co.
United States 		Wanamaker Rd. / SW 6th Ave.
(39.05662, -95.76134) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
54.7180 		Other (At-Grade)
Single-Lane 		2004 Intersection expanded for new development. Previously T with 6th controlled by stop sign. Previously controlled by one-way stop ICD estimated from Google Maps linework.
Topeka, KS
Shawnee Co.
United States 		45th St. / Croco Rd.
(38.98618, -95.61436) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
46.4174 		Other (At-Grade)
Single-Lane 		2008 ICD estimated from Google Maps linework.
Claremont, CA
Los Angeles Co.
United States 		Indian Hill Blvd. / Bonita St.
(34.09662, -117.71930) 		Roundabout
Removed 		All-Way Yield
Unknown 		4 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Unknown 		2000 Temporary roundabout installed in August 1999, removed in April 2000. Strong public negative opinion cited as reason for removal. (Westernite, July-August 2000, pp. 2-3)
Las Vegas (Summerlin), NV
Clark Co.
United States 		Town Center Dr. / Canyon Run Dr. / Banburry Cross Dr.
(36.18080, -115.31370) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
54.8640 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		1995 Completed March 1995. Modified 2003 to reduce from three-lane entries to two-lane entries with add-lane right-turn bypasses on all legs. 21442
Las Vegas (Summerlin), NV
Clark Co.
United States 		Desert Primrose Ln. / Desert Marigold Ln. / Blue Willow Ln.
(36.14060, -115.32090) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
40.5093 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		1999 Functional Class: Collector ICD estimated from Google Maps linework.
Topeka, KS
Shawnee Co.
United States 		SW 29th St. / Urish Rd.
(39.01446, -95.78102) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
48.7680 		Other (At-Grade)
Single-Lane 		2001 Completed July 2001 as single-lane roundabout. Retail shopping center on SW corner. Converted to partial double-lane roundabout 2010. 21442
Gordonsville, VA
Orange Co.
United States 		James Madison Hwy / N. Main St. / Spotswood Trl.
(38.14261, -78.18947) 		Other
Existing 		Unknown
Unknown 		4 Approaches
0 Driveways
31.9366 		Other (At-Grade)
Single-Lane 		ICD estimated from Google Maps linework.
Howard, WI
Brown Co.
United States 		Lineville Rd. (CTH M) / Cardinal Ln. (CTH EB)
(44.59090, -88.08430) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
29.7684 		Other (At-Grade)
Single-Lane 		1999 Roundabout is near Forest Glen Elementary School, Lineville Intermediate School, and Bay Port High School. Completed October 1999. http://www.co.brown.wi.us/Planning/roundabouts.html Functional Class: Arterial ICD estimated from Google Maps linework.
Topeka, KS
Shawnee Co.
United States 		46th St. / US 75 Ramps
(39.12934, -95.71959) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
124.9680 		Freeway Ramps (Grade-Separated)
Single-Lane 		2002 Roundabout under structure as part of single-point interchange. Elliptical shaped. ICD = 410 ft x 270 ft. Original intersection was at grade. Completed November 2002.
Portland, OR
Multnomah Co.
United States 		SW Terwilliger Blvd. / SW Palater Rd.
(45.45290, -122.67660) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
38.1000 		Other (At-Grade)
Single-Lane 		2002 Roundabout replaces existing Y-intersection, adds fourth leg to serve college law school. Includes driveway into roundabout serving two homes. Roundabout is on tilted plane with central island plane steeper than inscribed circle plane to manage cross slopes. Northeast leg (Palater Road) has 8-9 percent grade down into roundabout, then flattens using a short vertical curve to a zero percent crown at the top of the circulatory roadway. Maximum grade through the roundabout is 4 percent; maximum cross slope is -2 percent. First roundabout under City of Portland jurisdiction.
Bend, OR
Deschutes Co.
United States 		NW Mt. Washington Dr. / NW Skyliners Rd.
(44.05369, -121.35490) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
40.3425 		Other (At-Grade)
Single-Lane 		2005 Roundabout constructed with addition of south leg. ICD estimated from Google Maps linework.
Bend, OR
Deschutes Co.
United States 		NW Shevlin Park Rd. / Newport Ave. / College Way
(44.06240, -121.33770) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
32.6125 		Other (At-Grade)
Single-Lane 		2006 ICD estimated from Google Maps linework.