29410 Results

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City, State
County
Country
Intersection
(Lat, Lng)
Type
Status
Control Type / Other Control Type Approaches / Driveways / ICD (m) Functional Class /
LaneType
Year Completed Comments
Fort Worth, TX
Tarrant Co.
United States
Bluebonnet Circle [W Biddson St. / Park Ridge Blvd. / S University Dr.]
(32.69902, -97.36044)
Other
Existing
Unknown
Unknown
6 Approaches
0 Driveways
141.7320
Other (At-Grade)
Multilane (2 Lane, unspecified)
1929 .
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.
Anchorage, AK
Anchorage
United States
Dowling Rd. / New Seward Hwy SB Ramps
(61.16636, -149.85780)
Roundabout
Existing
All-Way Yield
None
3 Approaches
0 Driveways
35.1352
Freeway Ramps (Grade-Separated)
Multilane (2 Lane, unspecified)
2004 Previously controlled by one-way stop ICD estimated from Google Maps linework.
Anchorage, AK
Anchorage
United States
Dowling Rd. / New Seward Hwy NB Ramps
(61.16637, -149.85520)
Roundabout
Existing
All-Way Yield
None
3 Approaches
0 Driveways
38.0151
Freeway Ramps (Grade-Separated)
Multilane (2 Lane, unspecified)
2004 Spiral striping. ICD estimated from Google Maps linework.
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.
Bayfield, CO
La Plata Co.
United States
CR 501 / Bayfield Center Dr.
(37.23393, -107.60191)
Roundabout
Existing
All-Way Yield
None
3 Approaches
0 Driveways
41.1480
Other (At-Grade)
Single-Lane
2001 Bayfield Center Drive is a new roadway. Completed Fall 2001.
Astoria, OR
Clatsop Co.
United States
US 101 / Hwy 202 (Nehalem Highway)
(46.18290, -123.86070)
Roundabout
Existing
All-Way Yield
None
3 Approaches
0 Driveways
45.4797
Other (At-Grade)
Multilane (2 Lane, unspecified)
2002 Opened September 2002. First multilane roundabout on Oregon state highway system. ICD estimated from Google Maps linework.
Monroe, WA
Snohomish Co.
United States
SR 522 EB Ramps / 164th St. SE / Tester Rd.
(47.84863, -122.00580)
Roundabout
Existing
All-Way Yield
None
5 Approaches
0 Driveways
60.9143
Other (At-Grade)
Multilane (2 Lane, unspecified)
2001 Completed August 2001. This project won the Washington State APWA 2001 Project of the Award and the ASCE Seattle Section 2001 Outstanding Project Award. The Project is documented in the Compendium of Papers for 2000 ITE District 6 Annual Meeting, San Diego, CA. Reconfiguration of two intersections into a roundabout. Previously controlled by two-way stop ICD estimated from Google Maps linework.
Buffalo, NY
Erie Co.
United States
Gates Circle (Delaware Ave. / Lafayette Ave.)
(42.92054, -78.86776)
Other
Existing
Unknown
Unknown
5 Approaches
0 Driveways
66.4699
Other (At-Grade)
Unknown
2002 Modified in 2002 to incorporate roundabout principles. ICD estimated from Google Maps linework. 21442
Federal Way, WA
King Co.
United States
Weyerhaeuser Way S / 33rd Pl S / 32nd Dr. S
(47.29863, -122.29280)
Roundabout
Existing
All-Way Yield
None
3 Approaches
0 Driveways
35.6385
Other (At-Grade)
Multilane (2 Lane, unspecified)
2000 Opened April 2000. Previously controlled by one-way stop Functional Class: Arterial 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.
Phoenix, AZ
Maricopa Co.
United States
Aviano Way / (unknown)
(33.68941, -111.99350)
Rotary
Existing
All-Way Yield
None
0 Approaches
0 Driveways
79.4999
Other (At-Grade)
Single-Lane
Mini-roundabout. Completed 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.
Lewisville, NC
Forsyth Co.
United States
Concord Church Rd. / US 421 SB Ramp / Williams Rd.
(36.08978, -80.43072)
Roundabout
Existing
All-Way Yield
None
3 Approaches
0 Driveways
29.9191
Freeway Ramps (Grade-Separated)
Single-Lane
2000 Solved capacity problem. Previously controlled by one-way stop ICD estimated from Google Maps linework.
Clemmons, NC
Forsyth Co.
United States
Fraternity Church Rd. / Hope Church Rd.
(36.02653, -80.34301)
Roundabout
Existing
All-Way Yield
None
3 Approaches
0 Driveways
28.0113
Other (At-Grade)
Single-Lane
1999 Existing three-legged intersection converted to a four-legged intersection by adding new Clemmons Middle School driveway at the roundabout. Previously controlled by one-way stop Functional Class: Local 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.
Phoenix, AZ
Maricopa Co.
United States
S. Melon Ln. / W. Country Place Blvd.
(33.41839, -112.27850)
Roundabout
Existing
All-Way Yield
None
2 Approaches
2 Driveways
23.9249
Other (At-Grade)
Single-Lane
2004 Painted splitter islands. Functional Class: Local 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.
Seattle, WA
King Co.
United States
26th Ave. S / S. Judkins St.
(47.59209, -122.29900)
Traffic Calming Circle
Existing
Unknown
Unknown
0 Approaches
0 Driveways
20.9420
Other (At-Grade)
Unknown
2006 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.
Seattle, WA
King Co.
United States
24th Ave. S / S. Norman St.
(47.59301, -122.30120)
Traffic Calming Circle
Existing
Unknown
Unknown
0 Approaches
0 Driveways
41.0778
Other (At-Grade)
Unknown
2006 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.
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.
Las Vegas (Summerlin), NV
Clark Co.
United States
Desert Primrose Ln. / Spotted Leaf Ln. / Pavillion Center Dr.
(36.14070, -115.33120)
Roundabout
Existing
All-Way Yield
None
3 Approaches
0 Driveways
41.4737
Other (At-Grade)
Multilane (2 Lane, unspecified)
1999 Functional Class: Collector ICD estimated from Google Maps linework.
Las Vegas (Summerlin), NV
Clark Co.
United States
Havenwood Ave. / Spotted Leaf Ln. / Golden Willow
(36.13300, -115.33040)
Roundabout
Existing
All-Way Yield
None
4 Approaches
0 Driveways
37.6194
Other (At-Grade)
Multilane (2 Lane, unspecified)
1999 Functional Class: Collector ICD estimated from Google Maps linework.
Las Vegas (Summerlin), NV
Clark Co.
United States
Havenwood Ave. / Desert Marigold Ln. / Navajo Willow Ln.
(36.13360, -115.32110)
Roundabout
Existing
All-Way Yield
None
4 Approaches
0 Driveways
39.5483
Other (At-Grade)
Multilane (2 Lane, unspecified)
2000 Functional Class: Collector. Year Completed estimated (1999-2002). ICD estimated from Google Maps linework.
Henderson (Seven Hills), NV
Clark Co.
United States
Grand Hills Dr. / Rio Secoo Golf Club
(35.97713, -115.11100)
Other
Existing
Unknown
Unknown
3 Approaches
0 Driveways
74.4214
Other (At-Grade)
Single-Lane
1998 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.
Howard, WI
Brown Co.
United States
Lineville Rd. (CTH M) / Rockwell Ln.
(44.59080, -88.08880)
Roundabout
Existing
All-Way Yield
None
3 Approaches
0 Driveways
28.0674
Other (At-Grade)
Single-Lane
1999 Roundabout is adjacent to Lineville Intermediate School, Middle School, and High School. School did not allow pedestrian crossings prior to roundabout due to unsafe conditions, now allows crossings using crossing guard. Completed October 1999. http://www.co.brown.wi.us/Planning/roundabouts.html Previously controlled by one-way stop Functional Class: Arterial ICD estimated from Google Maps linework.
Scottsdale, AZ
Maricopa Co.
United States
Princess Blvd. / Princess Dr.
(33.64804, -111.91795)
Other
Existing
All-Way Yield
None
3 Approaches
0 Driveways
64.0077
Other (At-Grade)
Multilane (2 Lane, 2x1 max)
1986 Painted spiral next to central island. Completed 1986. Reconfigured in 2007? 21442
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.
Green Bay, WI
Brown Co.
United States
Mason St. (STH 32-STH 54) / S. Taylor St.
(44.52414, -88.07916)
Roundabout
Existing
All-Way Yield
None
4 Approaches
0 Driveways
43.4266
Other (At-Grade)
Multilane (2 Lane, unspecified)
2012 Series of 3 roundabouts. Opened August 31, 2012. ICD estimated from Google Maps linework.
Green Bay, WI
Brown Co.
United States
Shawano Ave. (STH 29) / Taylor St.
(44.53461, -88.07319)
Roundabout
Existing
All-Way Yield
None
4 Approaches
0 Driveways
49.3783
Other (At-Grade)
Multilane (3+ Lane)
2011 Opened September 2011. ICD estimated from Google Maps linework.
Draper, UT
Salt Lake Co.
United States
1300 E / Pioneer Rd.
(40.52518, -111.85340)
Roundabout
Existing
All-Way Yield
None
4 Approaches
0 Driveways
37.2210
Other (At-Grade)
Multilane (2 Lane, 2x1 max)
2001 ICD estimated from Google Maps linework. Constructed as single-lane in 2001. Updated to 2x1 in 2023. https://www.draperjournal.com/2023/09/07/464782/roundabout-reopens-early-with-revised-traffic-pattern
Orem, UT
Utah Co.
United States
1200 South / 400 West
(40.27531, -111.70480)
Roundabout
Existing
All-Way Yield
None
5 Approaches
0 Driveways
30.9811
Other (At-Grade)
Single-Lane
2000 ICD estimated from Google Maps linework.
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.