Roundabouts Database Index

29411 Results

Search by location, intersection, and comments with the Quick Search below. You can search all other attributes by clicking Advanced Search. Sort results by clicking the headers of any column. Click the Intersection name for a details and aerial view. Search results pages can be bookmarked. Results can be exported to KML for viewing in Google Earth.

City, State County Country	Intersection (Lat, Lng)	Type Status	Control Type / Other Control Type	Approaches / Driveways / ICD (m)	Functional Class / LaneType	Year Completed	Comments
Portland, OR Multnomah Co. United States	N Clarendon Ave (45.58974, -122.72415)	Traffic Calming Circle Existing	Unknown None	1 Approaches 1 Driveways	Other (At-Grade) Single-Lane
Portland, OR Multnomah Co. United States	NE 47th Ave. / NE Brazee St. (45.54056, -122.61496)	Traffic Calming Circle Existing	Unknown None	4 Approaches 0 Driveways 34.2970	Other (At-Grade) Single-Lane	1990	Completed 9/25/1990. ICD estimated from Google Maps linework.
Portland, OR Multnomah Co. United States	NE 47th Ave. / NE Thompson St. (45.53903, -122.61496)	Traffic Calming Circle Existing	Unknown None	4 Approaches 0 Driveways 18.4038	Other (At-Grade) Single-Lane	1990	Completed 9/25/1990. ICD estimated from Google Maps linework.
Portland, OR Multnomah Co. United States	NE Clackamas St. / NE 53rd Ave. (45.53300, -122.60880)	Traffic Calming Circle Existing	Unknown None	4 Approaches 0 Driveways 30.1185	Other (At-Grade) Single-Lane	1988	Completed 11/3/1988. ICD estimated from Google Maps linework.
Portland, OR Multnomah Co. United States	NE 53rd Ave. / NE Hassalo St. (45.53048, -122.60880)	Traffic Calming Circle Existing	Unknown None	4 Approaches 0 Driveways 35.1398	Other (At-Grade) Single-Lane	1988	Completed 11/3/1988. ICD estimated from Google Maps linework.
Portland, OR Multnomah Co. United States	NE 7th Ave. / NE Tillamook St. (W) (45.53790, -122.65861)	Traffic Calming Circle Existing	Unknown None	3 Approaches 0 Driveways 83.6552	Other (At-Grade) Single-Lane	1992	Completed 1/9/1992. ICD estimated from Google Maps linework.
Portland, OR Multnomah Co. United States	NE 7th Ave. / NE Sacramento St. (45.53955, -122.65862)	Traffic Calming Circle Existing	Unknown None	4 Approaches 0 Driveways 121.2965	Other (At-Grade) Single-Lane	1992	Completed 1/9/1992. ICD estimated from Google Maps linework.
Portland, OR Multnomah Co. United States	NE 7th Ave. / NE Russell St. (45.54126, -122.65861)	Traffic Calming Circle Existing	Unknown None	4 Approaches 0 Driveways 161.4450	Other (At-Grade) Single-Lane	1992	Completed 1/9/1992. ICD estimated from Google Maps linework.
Portland, OR Multnomah Co. United States	NE 7th Ave. / NE Graham St. (45.54296, -122.65859)	Traffic Calming Circle Existing	Unknown None	4 Approaches 0 Driveways 161.4401	Other (At-Grade) Single-Lane	1992	Completed 1/9/1992. ICD estimated from Google Maps linework.
Portland, OR Multnomah Co. United States	NE 7th Ave. / NE Morris St. (45.54468, -122.65860)	Traffic Calming Circle Removed	One-Way/Two-Way Stop None	3 Approaches 0 Driveways 128.8135	Other (At-Grade) Single-Lane	2013	Neighborhood traffic circle was installed 1/9/1992. Removed in 2013 as part of upgrades to the Neighborhood Greenway. Added speed humps nearby. ICD estimated from Google Maps linework.
Portland, OR Multnomah Co. United States	NE 7th Ave. / NE Cook St. (45.54717, -122.65859)	Traffic Calming Circle Existing	Unknown None	4 Approaches 0 Driveways 17.5647	Other (At-Grade) Single-Lane	1992	Completed 1/9/1992. ICD estimated from Google Maps linework.
Portland, OR Multnomah Co. United States	NE Fremont Dr. / NE Dyer St. (45.54603, -122.57509)	Traffic Calming Circle Existing	Unknown None	3 Approaches 0 Driveways 29.2751	Other (At-Grade) Single-Lane	1986	Completed 12/2/1986. ICD estimated from Google Maps linework.
Portland, OR Multnomah Co. United States	NE Fremont Dr. / NE 86th Ave. (45.54567, -122.57478)	Traffic Calming Circle Existing	Unknown None	3 Approaches 0 Driveways 25.0931	Other (At-Grade) Single-Lane	1986	Completed 12/2/1986. ICD estimated from Google Maps linework.
Portland, OR Multnomah Co. United States	NE Fremont Dr. / NE Duddleson St. (45.54667, -122.57574)	Traffic Calming Circle Existing	Unknown None	4 Approaches 0 Driveways 33.4569	Other (At-Grade) Single-Lane	1986	Completed 12/2/1986. ICD estimated from Google Maps linework.
Portland, OR Multnomah Co. United States	NE Holman St. / NE 34th Ave. (45.56826, -122.62965)	Traffic Calming Circle Existing	Unknown None	4 Approaches 0 Driveways 159.6952	Other (At-Grade) Single-Lane	1988	Completed 10/28/1988. ICD estimated from Google Maps linework.
Portland, OR Multnomah Co. United States	NE Holman St. / NE 37th Ave. (45.56826, -122.62557)	Traffic Calming Circle Existing	Unknown None	4 Approaches 0 Driveways	Other (At-Grade) Single-Lane	1988	Completed 10/28/1988.
Portland, OR Multnomah Co. United States	NE Holman St. / NE 41st St. (45.56858, -122.62172)	Traffic Calming Circle Existing	Unknown None	4 Approaches 0 Driveways 81.9374	Other (At-Grade) Single-Lane	1988	Completed 10/28/1988. ICD estimated from Google Maps linework.
Portland, OR Multnomah Co. United States	NE Imperial Ave. / NE Multnomah St. (45.53154, -122.62719)	Traffic Calming Circle Existing	Unknown None	4 Approaches 0 Driveways 74.4616	Other (At-Grade) Single-Lane	1987	Completed 10/22/1987. ICD estimated from Google Maps linework.
Portland, OR Multnomah Co. United States	NE US Grant Pl. / NE 35th Ave. (45.53779, -122.62841)	Traffic Calming Circle Existing	Unknown None	3 Approaches 0 Driveways 14.2214	Other (At-Grade) Single-Lane	1989	Completed 10/11/1989. ICD estimated from Google Maps linework.
Portland, OR Multnomah Co. United States	NE US Grant Pl. / NE 36th Ave. (45.53777, -122.62601)	Traffic Calming Circle Existing	Unknown None	4 Approaches 0 Driveways 40.1546	Other (At-Grade) Single-Lane	1989	Completed 10/11/1989. ICD estimated from Google Maps linework.
Portland, OR Multnomah Co. United States	NW 26th Ave. / NW Raleigh St. (45.53397, -122.70479)	Traffic Calming Circle Existing	Unknown None	4 Approaches 0 Driveways 19.2420	Other (At-Grade) Single-Lane	1988	Completed 9/30/1988. ICD estimated from Google Maps linework.
Portland, OR Multnomah Co. United States	NW 27th Ave. / NW Raleigh St. (45.53395, -122.70680)	Traffic Calming Circle Existing	Unknown None	4 Approaches 0 Driveways 10.0393	Other (At-Grade) Single-Lane	1988	Completed 9/30/1988. ICD estimated from Google Maps linework.
Portland, OR Multnomah Co. United States	SE 15th Ave. / SE Oak St. (45.52006, -122.65057)	Traffic Calming Circle Existing	Unknown None	4 Approaches 0 Driveways 23.4309	Other (At-Grade) Single-Lane	1988	Completed 9/6/1988. ICD estimated from Google Maps linework.
Portland, OR Multnomah Co. United States	SE 15th Ave. / SE Alder St. (45.51792, -122.65058)	Traffic Calming Circle Existing	Unknown None	4 Approaches 0 Driveways 15.9001	Other (At-Grade) Single-Lane	1988	Completed 9/7/1988. ICD estimated from Google Maps linework.
Portland, OR Multnomah Co. United States	SE 14th Ave. / SE Main St. (45.51365, -122.65165)	Traffic Calming Circle Existing	Unknown None	4 Approaches 0 Driveways 15.9013	Other (At-Grade) Single-Lane	1988	Completed 9/12/1988. ICD estimated from Google Maps linework.
Portland, OR Multnomah Co. United States	SE 13th Ave. / SE Madison St. (45.51294, -122.65266)	Traffic Calming Circle Existing	Unknown None	4 Approaches 0 Driveways 12.5539	Other (At-Grade) Single-Lane	1988	Completed 9/8/1988. ICD estimated from Google Maps linework.
Portland, OR Multnomah Co. United States	SE 14th Ave. / SE Taylor St. (45.51507, -122.65166)	Traffic Calming Circle Existing	Unknown None	4 Approaches 0 Driveways 17.5747	Other (At-Grade) Single-Lane	1988	Completed 9/12/1988. ICD estimated from Google Maps linework.
Portland, OR Multnomah Co. United States	SE 14th Ave. / SE Pine St. (45.52077, -122.65158)	Traffic Calming Circle Existing	Unknown None	4 Approaches 0 Driveways 15.0625	Other (At-Grade) Single-Lane	1988	Completed 9/12/1988. ICD estimated from Google Maps linework.
Portland, OR Multnomah Co. United States	SE 16th Ave. / SE Ash St. (45.52148, -122.64956)	Traffic Calming Circle Existing	Unknown None	4 Approaches 0 Driveways 22.5935	Other (At-Grade) Single-Lane	1988	Completed 10/7/1988. ICD estimated from Google Maps linework.
Portland, OR Multnomah Co. United States	SE 27th Ave. / SE Salmon St. (45.51429, -122.63812)	Traffic Calming Circle Existing	Unknown None	4 Approaches 0 Driveways 29.2916	Other (At-Grade) Single-Lane	1982	Completed 2/16/1982. ICD estimated from Google Maps linework.
Portland, OR Multnomah Co. United States	SE 30th Ave. / SE Grant St. (W) (45.50679, -122.63472)	Traffic Calming Circle Existing	Unknown None	3 Approaches 0 Driveways 14.2293	Other (At-Grade) Single-Lane	1990	Completed 4/16/1990. ICD estimated from Google Maps linework.
Portland, OR Multnomah Co. United States	SE 30th Ave. / SE Grant St. (E) (45.50726, -122.63473)	Traffic Calming Circle Existing	Unknown None	3 Approaches 0 Driveways 109.6480	Other (At-Grade) Single-Lane	1990	Completed 4/16/1990. ICD estimated from Google Maps linework.
Portland, OR Multnomah Co. United States	SE 41st Ave. / SE Harrison St. (45.50878, -122.62020)	Traffic Calming Circle Existing	Unknown None	4 Approaches 0 Driveways 80.3506	Other (At-Grade) Single-Lane	1990	Completed 5/30/1990. ICD estimated from Google Maps linework.
Portland, OR Multnomah Co. United States	SE 36th Ave. / SE Bybee Blvd. (45.47241, -122.62621)	Traffic Calming Circle Existing	Unknown None	4 Approaches 0 Driveways 56.9518	Other (At-Grade) Single-Lane	1992	Completed 10/6/1992. ICD estimated from Google Maps linework.
Portland, OR Multnomah Co. United States	SE Bybee Blvd. / (SE 37th Ave.) (45.47243, -122.62440)	Traffic Calming Circle Existing	Uncontrolled None	2 Approaches 0 Driveways 20.1003	Other (At-Grade) Single-Lane	1992	Completed 10/6/1992. ICD estimated from Google Maps linework.
Portland, OR Multnomah Co. United States	SE 34th Ave. / SE Bybee Blvd. (45.47319, -122.62826)	Traffic Calming Circle Existing	Unknown None	4 Approaches 0 Driveways 81.2389	Other (At-Grade) Single-Lane	1992	Completed 9/30/1992. ICD estimated from Google Maps linework.
Portland, OR Multnomah Co. United States	SE 30th Ave. / SE Gladstone St. (45.49337, -122.63466)	Traffic Calming Circle Existing	Unknown None	4 Approaches 0 Driveways 32.6514	Other (At-Grade) Single-Lane	1996	Completed 10/17/1996. ICD estimated from Google Maps linework.
Portland, OR Multnomah Co. United States	SE 34th Ave. / SE Gladstone St. (45.49335, -122.62978)	Traffic Calming Circle Existing	Unknown None	4 Approaches 0 Driveways 61.9539	Other (At-Grade) Single-Lane	1996	Completed 10/17/1996. ICD estimated from Google Maps linework.
Portland, OR Multnomah Co. United States	SE 37th Ave. / SE Harrison St. (45.50879, -122.62572)	Traffic Calming Circle Existing	Unknown None	4 Approaches 0 Driveways 80.3506	Other (At-Grade) Single-Lane	1990	Completed 9/14/1990. ICD estimated from Google Maps linework.
Portland, OR Multnomah Co. United States	SE Ladd Ave. / SE Palm St. (45.51025, -122.65144)	Traffic Calming Circle Existing	Unknown None	4 Approaches 0 Driveways 40.1743	Other (At-Grade) Single-Lane	1993	Completed 11/8/1993. ICD estimated from Google Maps linework.
Portland, OR Multnomah Co. United States	SE Ladd Ave. / SE Lavender St. (45.50686, -122.64744)	Traffic Calming Circle Existing	Unknown None	4 Approaches 0 Driveways 24.2734	Other (At-Grade) Single-Lane	1983	Completed 11/8/1983. ICD estimated from Google Maps linework.
Portland, OR Multnomah Co. United States	SE 46th Ave. / SE Lincoln St. (45.50802, -122.61510)	Traffic Calming Circle Existing	Unknown None	4 Approaches 0 Driveways 35.1539	Other (At-Grade) Single-Lane	1990	Completed 4/23/1990. ICD estimated from Google Maps linework.
Portland, OR Multnomah Co. United States	SW 47th Dr. / SW 43rd Ave. (45.49245, -122.72111)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 54.4198	Other (At-Grade) Single-lane w/ Traversable Central Island	2007	Completed 4/29/2007. Painted but unraised central island. No splitter islands. ICD estimated from Google Maps linework.
Portland, OR Multnomah Co. United States	NE Yacht Harbor Drive (45.60542, -122.66034)	Other Existing	All-Way Yield Unknown	1 Approaches 2 Driveways 25.9020	Other (At-Grade) Single-Lane	2006	N end of Yacht Harbor Drive, yield entry at south, driveway at west and driveway at east. 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.
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.
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.
Portland, OR Multnomah Co. United States	NW 25th Ave. / NW Quimby St. (45.53328, -122.70277)	Traffic Calming Circle Existing	One-Way/Two-Way Stop None	3 Approaches 0 Driveways 15.8958	Other (At-Grade) Single-Lane	1988	Completed 9/30/1988. 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.
Portland, OR Multnomah Co. United States	SE Ladd Circle (45.50850, -122.64940)	Other Existing	Unknown None	0 Approaches 0 Driveways 92.0689	Other (At-Grade) Single-Lane		ICD estimated from Google Maps linework.
Portland, OR Multnomah Co. United States	NE 24th Ave. / Brazee St. (45.54050, -122.64110)	Traffic Calming Circle Existing	Unknown Unknown	4 Approaches 0 Driveways	Other (At-Grade) Single-Lane	1989	Completed 10/10/1989.
Portland, OR Multnomah Co. United States	NE 24th Ave. / Thompson St. (45.53896, -122.64110)	Traffic Calming Circle Existing	Unknown Unknown	4 Approaches 0 Driveways 56.8845	Other (At-Grade) Single-Lane	1989	Completed 10/10/1989. ICD estimated from Google Maps linework.
Portland, OR Multnomah Co. United States	NE 24th Ave. / Tillamook St. (45.53741, -122.64110)	Traffic Calming Circle Existing	Unknown Unknown	4 Approaches 0 Driveways 56.0495	Other (At-Grade) Single-Lane	1989	Completed 10/10/1989. ICD estimated from Google Maps linework.
Portland, OR Multnomah Co. United States	NE 21st Ave. / Thompson St. (45.53898, -122.64420)	Traffic Calming Circle Existing	Unknown Unknown	4 Approaches 0 Driveways 34.2980	Other (At-Grade) Single-Lane	1989	Completed 10/10/1989. ICD estimated from Google Maps linework.
Portland, OR Multnomah Co. United States	NE 21st Ave. / Brazee St. (45.54051, -122.64420)	Traffic Calming Circle Existing	Unknown Unknown	4 Approaches 0 Driveways 86.9974	Other (At-Grade) Single-Lane	1989	Completed 10/10/1989. ICD estimated from Google Maps linework.
Portland, OR Multnomah Co. United States	NE 37th Ave. / Morris St. / Wisteria St. (45.54467, -122.62500)	Traffic Calming Circle Existing	Unknown Unknown	4 Approaches 0 Driveways 16.7290	Other (At-Grade) Single-Lane	1986	Completed 12/23/1986. ICD estimated from Google Maps linework.
Portland, OR Multnomah Co. United States	NE 37th Ave. / Brazee St. (45.54057, -122.62500)	Traffic Calming Circle Existing	Unknown Unknown	4 Approaches 0 Driveways 119.6213	Other (At-Grade) Single-Lane	1987	Completed 10/16/1987. ICD estimated from Google Maps linework.
Portland, OR Multnomah Co. United States	NE 37th Ave. / Thompson St. (45.53904, -122.62500)	Traffic Calming Circle Existing	Unknown Unknown	4 Approaches 0 Driveways 94.5285	Other (At-Grade) Single-Lane	1987	Completed 11/16/1987. ICD estimated from Google Maps linework.
Portland, OR Multnomah Co. United States	SE 32nd Ave. / SE Lincoln St. (45.50825, -122.63270)	Traffic Calming Circle Existing	Unknown None	4 Approaches 0 Driveways 12.5549	Other (At-Grade) Single-Lane	1990	Completed 4/25/1990. ICD estimated from Google Maps linework.
Portland, OR Multnomah Co. United States	SE 30th Ave. / SE Caruthers St. (45.50550, -122.63470)	Traffic Calming Circle Existing	Unknown Unknown	4 Approaches 0 Driveways 78.6812	Other (At-Grade) Single-Lane	1990	Completed 4/23/1990. ICD estimated from Google Maps linework.
Portland, OR Multnomah Co. United States	SE 31st Ave. / SE Clinton St. (45.50354, -122.63360)	Traffic Calming Circle Existing	Unknown None	4 Approaches 0 Driveways 14.2301	Other (At-Grade) Single-Lane	1990	Completed 6/22/1990. ICD estimated from Google Maps linework.
Portland, OR Multnomah Co. United States	SE 23rd Ave. / SE Clinton St. (45.50339, -122.64260)	Traffic Calming Circle Existing	Unknown None	4 Approaches 0 Driveways 31.8085	Other (At-Grade) Single-Lane	1990	Completed 6/22/1990. ICD estimated from Google Maps linework.
Portland, OR Multnomah Co. United States	SE 37th Ave. / SE Lincoln St. (45.50806, -122.62570)	Traffic Calming Circle Existing	Unknown None	4 Approaches 0 Driveways 15.0659	Other (At-Grade) Single-Lane	1990	Completed 4/25/1990. ICD estimated from Google Maps linework.
Portland, OR Multnomah Co. United States	SE 43rd Ave. / SE Lincoln St. (45.50799, -122.61810)	Traffic Calming Circle Existing	Unknown None	4 Approaches 0 Driveways 22.5989	Other (At-Grade) Single-Lane	1990	Completed 4/23/1990. ICD estimated from Google Maps linework.
Portland, OR Multnomah Co. United States	SE 51st Ave. / SE Lincoln St. (45.50803, -122.61000)	Traffic Calming Circle Existing	Unknown None	4 Approaches 0 Driveways 15.0659	Other (At-Grade) Single-Lane	1990	Completed 4/23/1990. ICD estimated from Google Maps linework.
Portland, OR Multnomah Co. United States	SE 55th Ave. (N) / SE Lincoln St. (45.50806, -122.60650)	Traffic Calming Circle Existing	One-Way/Two-Way Stop None	3 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane	1990	Completed 5/14/1990.
Portland, OR Multnomah Co. United States	SE 55th Ave. (S) / SE Lincoln St. (45.50804, -122.60610)	Traffic Calming Circle Existing	One-Way/Two-Way Stop None	3 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane	1990	Completed 5/14/1990.
Portland, OR Multnomah Co. United States	SE 58th Ave. (S) / SE Lincoln St. (45.50805, -122.60380)	Traffic Calming Circle Existing	Unknown None	4 Approaches 0 Driveways 104.6245	Other (At-Grade) Single-Lane	1990	Completed 5/8/1990. ICD estimated from Google Maps linework.
Portland, OR Multnomah Co. United States	SE 56th Ave. / SE Woodward St. (45.50140, -122.60500)	Traffic Calming Circle Existing	Unknown None	3 Approaches 0 Driveways 43.5289	Other (At-Grade) Single-Lane	1988	Completed 10/27/1998. ICD estimated from Google Maps linework.
Portland, OR Multnomah Co. United States	SE 58th Ave. / SE Woodward St. (45.50140, -122.60310)	Traffic Calming Circle Existing	Unknown None	4 Approaches 0 Driveways	Other (At-Grade) Single-Lane	1988	Completed 10/27/1998.
Portland, OR Multnomah Co. United States	SE 36th Ave. / SE Clinton St. (45.50337, -122.62630)	Traffic Calming Circle Existing	Unknown None	4 Approaches 0 Driveways 40.1792	Other (At-Grade) Single-Lane	1990	Completed 6/22/1990. ICD estimated from Google Maps linework.
Portland, OR Multnomah Co. United States	SE 45th Ave. / SE Clinton St. (45.50336, -122.61610)	Traffic Calming Circle Existing	Unknown None	4 Approaches 0 Driveways 87.0549	Other (At-Grade) Single-Lane	1990	Completed 4/25/1990. ICD estimated from Google Maps linework.
Portland, OR Multnomah Co. United States	SE 47th Ave. / SE Clinton St. (45.50336, -122.61400)	Traffic Calming Circle Existing	Unknown None	4 Approaches 0 Driveways 32.6456	Other (At-Grade) Single-Lane	1990	Completed 4/25/1990. ICD estimated from Google Maps linework.
Portland, WI Monroe Co. United States	STH 27 / STH 33 (43.74201, -90.79387)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways	Other (At-Grade) Single-Lane	2016
Portland, OR Multnomah Co. United States	NE Cascades Pkwy. / (parking) (45.57191, -122.55594)	Other Existing	Other Unknown	3 Approaches 0 Driveways 0.0000	Other (At-Grade) Multilane (2 Lane, unspecified)
Portland, OR Multnomah Co. United States	NE 108th St. / NE Oregon St. (45.52814, -122.55147)	Roundabout Existing	All-Way Yield Unknown	3 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-lane w/ Traversable Central Island	2021	https://bikeportland.org/2022/01/13/video-a-closer-look-at-pbots-three-new-roundabouts-on-ne-108th-343711.
Portland, OR Multnomah Co. United States	NE Everett St. / NE 108th St. (west) (45.52447, -122.55243)	Roundabout Existing	All-Way Yield Unknown	3 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-lane w/ Traversable Central Island	2021	Part of a double mini-roundabout. https://bikeportland.org/2022/01/13/video-a-closer-look-at-pbots-three-new-roundabouts-on-ne-108th-343711.
Portland, OR Multnomah Co. United States	NE Everett St. / NE 108th Ave. (east) (45.52447, -122.55223)	Roundabout Existing	All-Way Yield Unknown	3 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-lane w/ Traversable Central Island	2021	Part of a double mini-roundabout. https://bikeportland.org/2022/01/13/video-a-closer-look-at-pbots-three-new-roundabouts-on-ne-108th-343711.
Portland, ME Cumberland Co. United States	Deering Ave. / Falmouth St. / Brighton Ave. (43.66174, -70.27892)	Roundabout Existing	All-Way Yield None	5 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane	2021	Oval shaped. https://www.portlandmaine.gov/2286/Deerings-Corner-Roundabout
Portimão, Faro Portimão Portugal	Avenida Miguel Bombarda / Rua Melvin Jones / Avenida do Brasil (37.13344, -8.54232)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways	Other (At-Grade) Single-Lane
Portimão, Faro Portimão Portugal	Rotunda dos Três Castelos [Avenida das Comunidades Lusíadas / Avenida São Lourenço da Barrosa / Estrada do Vau] (37.11951, -8.55032)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways	Other (At-Grade) Multilane (2 Lane, unspecified)
Porterville, CA Tulare Co. United States	S Jaye St. / W Montgomery Ave. (36.04954, -119.02654)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 60.8344	Other (At-Grade) Multilane (2 Lane, unspecified)	2014	Right-turn bypass lane on east leg. ICD estimated from Google Maps linework.
Porterville, CA Tulare Co. United States	SR 190 / Road 284 (36.04752, -118.93725)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 40.5573	Other (At-Grade) Single-Lane	2016	ICD estimated from Google Maps linework.
Portage Township, OH Ottawa Co. United States	SR 53 (Catawba Rd.) / SR 2 Ramps (41.50681, -82.85952)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 0.0000	Freeway Ramps (Grade-Separated) Single-Lane	2024	https://sanduskyregister.com/news/522707/recognizing-the-roundabout/
Portage Township, OH Ottawa Co. United States	SR 53 (SE Catawba Rd.) / E State Rd. (41.50840, -82.85952)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane	2023	https://sanduskyregister.com/news/522707/recognizing-the-roundabout/
Portage la Prairie, MB Division 9 Canada	Hwy 1A / Trans Canada Hwy. WB Ramps (49.97435, -98.35997)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways	Freeway Ramps (Grade-Separated) Single-Lane	2022	https://portageonline.com/articles/see-aerial-view-of-west-end-roundabout-now-open https://www.portageonline.com/articles/final-plan-for-west-end-overpass-complete
Portage la Prairie, MB Division 9 Canada	Hwy 1A / Trans Canada Hwy. EB Ramps (49.97330, -98.36839)	Roundabout Unknown	All-Way Yield None	3 Approaches 0 Driveways	Freeway Ramps (Grade-Separated) Unknown		https://www.portageonline.com/articles/update-on-west-end-overpass-replacement-construction
Portage la Prairie, MB Division 9 Canada	Royal Rd. S / Crescent Rd. (49.96855, -98.29062)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 40.0000	Other (At-Grade) Single-Lane	2021	Right-turn bypass lanes on southwest and southeast legs. https://www.youtube.com/watch?v=7CzYNrFk0uY.
Portage la Prairie, MB Division 9 Canada	Royal Rd. S / Mayfair Farms Rd. (49.96672, -98.29230)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 40.0000	Other (At-Grade) Single-Lane	2021	https://www.youtube.com/watch?v=7CzYNrFk0uY.
Portage, MI Kalamazoo Co. United States	Zylman Ave. / Coxs Dr. (42.19367, -85.55061)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 35.0520	Other (At-Grade) Single-Lane	2020	Replaced offset T-intersections. Year Completed estimated (2018-2020).
Portage, MI Kalamazoo Co. United States	Texas Dr. / W Milham Rd. / S 12th St. (42.23030, -85.64826)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 32.7206	Other (At-Grade) Single-Lane	2011	ICD estimated from Google Maps linework.
Portage, WI Columbia Co. United States	W Wisconsin St. (STH 16) / Columbia Dr. (STH 127) / I-39 SB Ramps (43.56023, -89.49496)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 51.9282	Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified)	2018	https://www.wiscnews.com/portagedailyregister/news/local/dot-nearly-ready-to-open-portage-s-first-roundabout-to/article_bdd0df9d-4e73-52b4-99de-252ab92cf7c8.html#4 ICD estimated from Google Maps linework.
Port Wentworth, GA Chatham Co. United States	Magnolia Blvd. / (parking) (32.20965, -81.19781)	Other Existing	All-Way Stop None	3 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane		Parking in circulatory roadway.
Port Wentworth, GA Chatham Co. United States	Meinhard Rd. / Benton Blvd. (32.18643, -81.22110)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 45.7200	Other (At-Grade) Single-Lane	2020
Port Wentworth, GA Chatham Co. United States	Williams Rd. / Mason Dr. (32.13197, -81.15503)	Roundabout Unknown	All-Way Yield None	3 Approaches 0 Driveways 64.0080	Other (At-Grade) Multilane (2 Lane, unspecified)	2015	Port facility. Constructed using temporary barricades and markings only. Year Completed estimated (2015-2016).
Port Wentworth, GA Chatham Co. United States	Lake Shore Blvd. / Raintree Way (32.18978, -81.23344)	Other Existing	Unknown Unknown	3 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane
Port Wentworth, GA Chatham Co. United States	GA 30 / Benton Blvd. (32.19274, -81.22337)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 57.9120	Other (At-Grade) Unknown	2020
Port Wentworth, GA Chatham Co. United States	Miller Park Cir. / Rice Creek Rd. (32.23057, -81.19903)	Other Existing	Unknown Unknown	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane		No splitter islands.
Port Washington, WI Ozaukee Co. United States	STH 33 (W Grand Ave.) / CTH LL (43.38688, -87.90026)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 41.6619	Other (At-Grade) Multilane (2 Lane, unspecified)	2012	Opened September 21, 2012. Functional Class: Arterial ICD estimated from Google Maps linework.