Roundabouts Database Index

29361 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
White Center, WA King Co. United States	10th Ave. SW / SW 100th St. (47.51379, -122.34770)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 12.1000	Other (At-Grade) Single-lane w/ Traversable Central Island	2006	Opened April 2006. Previously controlled by two-way stop ICD estimated from Google Maps linework.
Seattle, WA King Co. United States	Linden Ave. N / N. 42nd St. (47.65774, -122.34850)	Traffic Calming Circle Existing	Unknown Unknown	0 Approaches 0 Driveways 56.3115	Other (At-Grade) Unknown	2006	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	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.
San Mateo Park, CA San Mateo Co. United States	Edgewood Rd. / Clark Dr. / Midway Ave. (37.56598, -122.34956)	Other Existing	Uncontrolled Unknown	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane		No splitter islands or control.
Greenwood, WA King Co. United States	Fremont Ave. N / N 83rd St. (47.68912, -122.34992)	Traffic Calming Circle Existing	One-Way/Two-Way Stop Unknown	4 Approaches 0 Driveways 16.7640	Other (At-Grade) Single-Lane
Greenwood, WA King Co. United States	Fremont Ave. N / N 82nd St. (47.68839, -122.34992)	Traffic Calming Circle Existing	One-Way/Two-Way Stop Unknown	4 Approaches 0 Driveways 16.7640	Other (At-Grade) Single-Lane
Federal Way, WA King Co. United States	12th Ave. SW / 12th Pl. SW / SW 340th St. (47.29677, -122.35142)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 18.6299	Other (At-Grade) Single-Lane	2013	Inscribed diameter of 76 feet, landscaped central island, yield control on all approaches. No curbing for channelizing the approaches, paint only. Opened November 2013. ICD estimated from Google Maps linework.
Greenwood, WA King Co. United States	N 83rd St. / Dayton Ave. N (47.68913, -122.35260)	Traffic Calming Circle Existing	Uncontrolled Unknown	4 Approaches 0 Driveways 16.7640	Other (At-Grade) Single-Lane
Greenwood, WA King Co. United States	N 82nd St. / Dayton Ave. N (47.68840, -122.35261)	Traffic Calming Circle Existing	Uncontrolled Unknown	4 Approaches 0 Driveways 16.7640	Other (At-Grade) Single-Lane
Redding, CA Shasta Co. United States	S Bonnyview Rd. / Bechelli Ln. (40.53910, -122.35470)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 50.2920	Other (At-Grade) Multilane (2 Lane, 2x1 max)	2022	Serves as a primary intersection for a Costco store. https://krcrtv.com/news/local/south-bonnyview-and-bechelli-lane-roadabout-update
Washougal, WA Clark Co. United States	SR 14 / 15th St. (Washougal River Rd.) (45.57665, -122.35617)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 29.2591	Other (At-Grade) Single-Lane	2019	Completed Summer 2019 (WSDOT). If needed will be converted in the future to multilane and has built in concrete joint lines in the splitter islands and central island truck apron. ICD estimated from Google Maps linework.
Crown Hill, WA King Co. United States	1st Ave. NW / NW 81st St. (47.68767, -122.35797)	Traffic Calming Circle Existing	One-Way/Two-Way Stop Unknown	4 Approaches 0 Driveways 16.7640	Other (At-Grade) Single-Lane
Crown Hill, WA King Co. United States	1st Ave. NW / NW 82nd St. (47.68839, -122.35799)	Traffic Calming Circle Existing	One-Way/Two-Way Stop Unknown	4 Approaches 0 Driveways 16.7640	Other (At-Grade) Single-Lane
Greenwood, WA King Co. United States	1st Ave. NW / NW 83rd St. (47.68911, -122.35799)	Traffic Calming Circle Existing	One-Way/Two-Way Stop Unknown	4 Approaches 0 Driveways 15.2400	Other (At-Grade) Single-Lane
Federal Way, WA King Co. United States	19th Ave. SW / SW 353rd Pl. (47.28501, -122.35852)	Traffic Calming Circle Existing	All-Way Yield None	4 Approaches 0 Driveways 21.9456	Other (At-Grade) Single-Lane	2020
Edmonds, WA Snohomish Co. United States	Emerald Hills Dr. / 12th Ave. N (47.81132, -122.35936)	Other Existing	Uncontrolled Unknown	4 Approaches 0 Driveways 41.1480	Other (At-Grade) Single-Lane		No splitter islands.
Shasta Lake, CA Shasta Co. United States	Smith Ave. / Jorsack Way / Rosstay Way (40.66503, -122.36168)	Other Existing	All-Way Yield None	4 Approaches 0 Driveways 30.4800	Other (At-Grade) Single-Lane	2006	Crosswalks are at unmarked entrance lines.
Greenwood, WA King Co. United States	NW 83rd St. / 6th Ave. NW (47.68911, -122.36333)	Traffic Calming Circle Existing	Uncontrolled Unknown	4 Approaches 0 Driveways 13.7157	Other (At-Grade) Single-Lane
Greenwood, WA King Co. United States	NW 82nd St. / 6th Ave. NW (47.68839, -122.36333)	Traffic Calming Circle Existing	Uncontrolled Unknown	4 Approaches 0 Driveways 16.7640	Other (At-Grade) Single-Lane
Crown Hill, WA King Co. United States	NW 81st St. / 6th Ave. NW (47.68766, -122.36334)	Traffic Calming Circle Existing	Uncontrolled Unknown	4 Approaches 0 Driveways 16.7640	Other (At-Grade) Single-Lane
Ballard, WA King Co. United States	NW 83rd St. / Dibble Ave. NW (47.68911, -122.36729)	Traffic Calming Circle Existing	Uncontrolled Unknown	4 Approaches 0 Driveways 13.7157	Other (At-Grade) Single-Lane
Federal Way, WA King Co. United States	SW 349th St. / 27th Ave. SW (47.28883, -122.36857)	Traffic Calming Circle Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane	2005	Painted splitter islands
Ballard, WA King Co. United States	NW 83rd St. / 11th Ave. NW (47.68875, -122.37041)	Traffic Calming Circle Existing	Uncontrolled Unknown	4 Approaches 0 Driveways 13.7157	Other (At-Grade) Single-Lane
Seattle, WA King Co. United States	30th Ave. SW / SW Cloverdale St. (47.52648, -122.37120)	Traffic Calming Circle Existing	Unknown Unknown	0 Approaches 0 Driveways 64.5176	Other (At-Grade) Unknown	2006	ICD estimated from Google Maps linework.
Ballard, WA King Co. United States	NW 83rd St. / 12th Ave. NW (47.68875, -122.37144)	Traffic Calming Circle Existing	Uncontrolled Unknown	4 Approaches 0 Driveways 13.7157	Other (At-Grade) Single-Lane
Ballard, WA King Co. United States	NW 83rd St. / 14th Ave. NW (47.68875, -122.37413)	Traffic Calming Circle Existing	Uncontrolled Unknown	4 Approaches 0 Driveways 13.7157	Other (At-Grade) Single-Lane
Seattle, WA King Co. United States	34th Ave. SW / SW Henderson St. (47.52286, -122.37530)	Traffic Calming Circle Existing	Unknown Unknown	0 Approaches 0 Driveways 42.7458	Other (At-Grade) Unknown	2006	ICD estimated from Google Maps linework.
Seattle, WA King Co. United States	34th Ave. SW / SW Elmgrove St. (47.53009, -122.37530)	Traffic Calming Circle Existing	Unknown Unknown	4 Approaches 0 Driveways	Other (At-Grade) Unknown
Ballard, WA King Co. United States	NW 77th St. / Mary Ave. NW (47.68508, -122.37547)	Traffic Calming Circle Existing	Uncontrolled Unknown	4 Approaches 0 Driveways 16.7640	Other (At-Grade) Single-Lane
Ballard, WA King Co. United States	NW 83rd St. / Mary Ave. NW (47.68875, -122.37549)	Traffic Calming Circle Existing	Uncontrolled Unknown	4 Approaches 0 Driveways 13.7157	Other (At-Grade) Single-Lane
Edmonds, WA Snohomish Co. United States	Main St. / 5th Ave. (47.81061, -122.37753)	Other Existing	All-Way Stop Unknown	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane		Water fountain in the middle.
Bellingham, WA Whatcom Co. United States	Everson Goshen Rd. / E Smith Rd. (48.83263, -122.37755)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways	Other (At-Grade) Single-lane w/ Traversable Central Island	2015	Open June 2015.
Washougal, WA Clark Co. United States	SE Port St. / Front St. (45.58009, -122.37780)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 28.4214	Other (At-Grade) Single-Lane	2012	ICD estimated from Google Maps linework.
Washougal, WA Clark Co. United States	SE Port St. / C St. (45.58099, -122.37780)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 39.2878	Other (At-Grade) Single-Lane	2012	ICD estimated from Google Maps linework.
Ballard, WA King Co. United States	NW 77th St. / 16th Ave. NW (47.68506, -122.37788)	Traffic Calming Circle Existing	Uncontrolled Unknown	4 Approaches 0 Driveways 16.7637	Other (At-Grade) Single-Lane
Ballard, WA King Co. United States	17th Ave. NW / NW 83rd St (47.68874, -122.37896)	Traffic Calming Circle Existing	One-Way/Two-Way Stop Unknown	4 Approaches 0 Driveways 13.7157	Other (At-Grade) Single-Lane
Ballard, WA King Co. United States	NW 77th St. / 18th Ave. NW (47.68505, -122.38004)	Traffic Calming Circle Existing	Uncontrolled Unknown	4 Approaches 0 Driveways 16.7640	Other (At-Grade) Single-Lane
Crown Hill, WA King Co. United States	NW 7tth St. / 19th Ave. NW (47.68504, -122.38110)	Traffic Calming Circle Existing	Uncontrolled Unknown	4 Approaches 0 Driveways 16.7640	Other (At-Grade) Single-Lane
Abbotsford, BC Fraser Valley Regional District Canada	Mt Lehman Rd. / S Fraser Way (49.05355, -122.38119)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 45.0000	Other (At-Grade) Multilane (2 Lane, unspecified)	2005	Year Completed estimated (2004-2006).
Abbotsford, BC Fraser Valley Regional District Canada	Mt Lehman Rd. / Old Yale Rd. / Hwy 1 WB Entrance Ramp (49.05889, -122.38131)	Roundabout Removed	All-Way Yield None	3 Approaches 0 Driveways 44.0000	Freeway Ramps (Grade-Separated) Multilane (2 Lane, 2x2 max)	2022	Roundabout (multilane, 2x2) constructed 2006 to replace a two-way stop intersection. Roundabout replaced with traffic signal in 2022.
Tacoma, WA Pierce Co. United States	49th Ave. NE / 33rd St. NE / Norpoint Way NE (47.28643, -122.38220)	Roundabout Existing	Unknown Unknown	4 Approaches 0 Driveways 25.9249	Other (At-Grade) Single-Lane	2004	Opened December 2004. ICD estimated from Google Maps linework.
Seattle, WA King Co. United States	40th Ave. SW / SW Manning St. (47.57122, -122.38250)	Traffic Calming Circle Existing	Unknown Unknown	0 Approaches 0 Driveways 7.2520	Other (At-Grade) Unknown	2006	ICD estimated from Google Maps linework.
Ballard, WA King Co. United States	NW 83rd St. / 21st Ave. NW (47.68871, -122.38328)	Traffic Calming Circle Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 13.7157	Other (At-Grade) Single-Lane
Ballard, WA King Co. United States	NW 83rd St. / 22nd Ave. NW (47.68871, -122.38435)	Traffic Calming Circle Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 13.7157	Other (At-Grade) Single-Lane
Ballard, WA King Co. United States	NW 77th St. / 22nd Ave. NW (47.68500, -122.38435)	Traffic Calming Circle Existing	Uncontrolled Unknown	4 Approaches 0 Driveways 13.7157	Other (At-Grade) Single-Lane
Ballard, WA King Co. United States	NW 83rd St. / 23rd Ave. NW (47.68871, -122.38542)	Traffic Calming Circle Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 13.7157	Other (At-Grade) Single-Lane
Washougal, WA Clark Co. United States	SE Union St. / Front St. (45.57985, -122.38560)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 33.4371	Other (At-Grade) Single-Lane	2012	ICD estimated from Google Maps linework.
Seattle, WA King Co. United States	42nd Ave. SW / SW Hinds St. (47.57318, -122.38570)	Traffic Calming Circle Existing	Unknown Unknown	0 Approaches 0 Driveways 9.6690	Other (At-Grade) Unknown	2006	ICD estimated from Google Maps linework.
Washougal, WA Clark Co. United States	SE Union St. / 8th Ave. (45.58089, -122.38580)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 30.9288	Other (At-Grade) Single-Lane	2012	ICD estimated from Google Maps linework.
Ballard, WA King Co. United States	NW 83rd St. / Jones Ave. NW (47.68870, -122.38650)	Traffic Calming Circle Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 13.7157	Other (At-Grade) Single-Lane
Seattle, WA King Co. United States	44th Ave. SW / SW College St. (47.58301, -122.38780)	Traffic Calming Circle Existing	Unknown Unknown	0 Approaches 0 Driveways 37.0576	Other (At-Grade) Unknown	2006	ICD estimated from Google Maps linework.
Federal Way, WA King Co. United States	SR 509 (SW Dash Point Rd.) / 47th Ave. SW (47.32161, -122.39253)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 27.4317	Other (At-Grade) Single-Lane	2022
Federal Way, WA King Co. United States	SW 329th Way / 49th Ave. SW (47.30724, -122.39523)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 21.3357	Other (At-Grade) Single-Lane	2017	Painted splitter islands.
San Francisco, CA San Francisco Co. United States	Mission Bay Dr. / Mission Bay Blvd. / Owens St. / Channel St. (37.77048, -122.39599)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 78.3588	Other (At-Grade) Multilane (2 Lane, unspecified)	2012	Year Completed estimated (2011-2012). ICD estimated from Google Maps linework.
Camas, WA Clark Co. United States	NE Woodburn Dr. / NE Laurel St. (45.60703, -122.39789)	Unknown Existing	Unknown None	4 Approaches 0 Driveways 28.9560	Other (At-Grade) Single-Lane	2018	Painted splitter islands. Year Completed estimated (2017-2018).
San Francisco, CA San Francisco Co. United States	8th St. / Townsend St. / Division St. / Kansas St. (37.76992, -122.40393)	Other Existing	All-Way Stop None	5 Approaches 0 Driveways 33.0431	Other (At-Grade) Single-Lane		ICD estimated from Google Maps linework.
Tacoma, WA Pierce Co. United States	E 29th St. / E 30th St. / E 28th St. (47.23811, -122.40505)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 27.5704	Other (At-Grade) Multilane (2 Lane, unspecified)	2018	ICD estimated from Google Maps linework.
Redding, CA Shasta Co. United States	Shasta St. / Olive Ave. (40.58343, -122.40524)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways	Other (At-Grade) Single-lane w/ Traversable Central Island	2006
Camas, WA Clark Co. United States	NE Everett St. / NW Lake Rd. (45.60225, -122.40656)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 47.2440	Other (At-Grade) Multilane (2 Lane, unspecified)	2021	https://www.camaspostrecord.com/news/2021/mar/25/camas-traffic-roundabout-completed/
Lynden, WA Whatcom Co. United States	SR 546 / Northwood Rd. (48.96424, -122.40709)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 21.9551	Other (At-Grade) Single-lane w/ Traversable Central Island	2016	Open June 2016. ICD estimated from Google Maps linework.
Redding, CA Shasta Co. United States	Shasta St. / Almond Ave. (40.58272, -122.40809)	Traffic Calming Circle Existing	All-Way Yield Unknown	4 Approaches 0 Driveways	Other (At-Grade) Single-Lane	2006
Redding, CA Shasta Co. United States	Teton Dr. / Crescent Moon Dr. / Crescent Moon Ct. (40.56422, -122.41552)	Traffic Calming Circle Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 23.5899	Other (At-Grade) Single-Lane	1997	Year completed estimated (before 1998). Pedestrian ramps into circulatory roadway. ICD estimated from Google Maps linework.
Camas, WA Clark Co. United States	NW 44th Ave. / NW Ivy St. (45.60804, -122.42079)	Other Existing	All-Way Yield Unknown	3 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane		No splitter islands.
Camas, WA Clark Co. United States	NW 44th Ave. / NW Jasmine St. (45.60960, -122.42245)	Other Existing	All-Way Yield None	3 Approaches 0 Driveways 26.8221	Other (At-Grade) Single-Lane	2012	No splitter islands, residential area.
Camas, WA Clark Co. United States	NW 6th Ave. / SR 14 WB Ramps / NW Norwood St. (45.58216, -122.42684)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 44.1960	Freeway Ramps (Grade-Separated) Single-Lane	2016
San Francisco, CA San Francisco Co. United States	Waller St. / Steiner St. (37.77097, -122.43190)	Traffic Calming Circle Existing	All-Way Stop None	4 Approaches 0 Driveways 66.0853	Other (At-Grade) Single-Lane	2003	Preliminary layout for neighborhodd comment Functional Class: Local ICD estimated from Google Maps linework.
Lynden, WA Whatcom Co. United States	SR 546 / Bender Rd. (48.96442, -122.44116)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 35.2849	Other (At-Grade) Single-Lane	2013	Open August 2013. ICD estimated from Google Maps linework.
Bellingham, WA Whatcom Co. United States	E Smith Rd. / Hannegan Rd. (48.83337, -122.44289)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Multilane (2 Lane, 2x1 max)	2024	https://whatcom-news.com/hannegan-smith-intersection-to-reopen-as-a-multi-lane-roundabout_219458/
Mount Vernon, WA Skagit Co. United States	Best Rd. / McLean Rd. (48.42070, -122.44380)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 32.4976	Other (At-Grade) Single-Lane	2009	April 2009. On high-speed rural roadways. ICD estimated from Google Maps linework.
Bay View, WA Skagit Co. United States	Josh Wilson Rd. / Farm to Market Rd. (48.48665, -122.44440)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane	2022	https://www.goskagit.com/townnews/economics/bay-view-area-roundabout-now-open/article_e9ac88a2-32e5-11ed-b607-03db0c4dca41.html
Camas, WA Clark Co. United States	NW Camas Meadows Dr. / NW Payne St. / NW Pittock Pl. (45.62718, -122.45141)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 32.0037	Other (At-Grade) Single-Lane	2018
Lynden, WA Whatcom Co. United States	SR 546 / Depot Rd. (48.96478, -122.45217)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 39.2052	Other (At-Grade) Single-Lane	2013	Open August 2013. ICD estimated from Google Maps linework.
Presidio, CA San Francisco Co. United States	Lincoln Blvd. / Girard Rd. (37.80065, -122.45385)	Roundabout Existing	All-Way Yield Unknown	3 Approaches 0 Driveways	Other (At-Grade) Single-Lane	2021	Separated bike lanes on all legs. https://sf.streetsblog.org/2021/03/01/presidios-dutch-roundabout/
San Francisco, CA San Francisco Co. United States	Claremont Blvd. / Taraval St. / Dewey Blvd. / Kensington Way (37.74376, -122.46370)	Other Existing	Unknown Unknown	5 Approaches 0 Driveways 35.8881	Other (At-Grade) Single-Lane		Stop-controlled traffic circle. ICD estimated from Google Maps linework.
Camas, WA Clark Co. United States	SE Brady Rd. / Columbia Palisades Dr. (45.58617, -122.47084)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 42.6717	Other (At-Grade) Single-Lane	2018
San Francisco, CA San Francisco Co. United States	Font Blvd. / Chumasero Dr. (37.71501, -122.47298)	Other Existing	Unknown Unknown	3 Approaches 0 Driveways 25.5093	Other (At-Grade) Single-Lane	1950	ICD estimated from Google Maps linework.
San Francisco, CA San Francisco Co. United States	Font Blvd. / Cambon Dr. (37.71590, -122.47445)	Other Existing	Unknown Unknown	3 Approaches 0 Driveways 28.3433	Other (At-Grade) Single-Lane	1950	ICD estimated from Google Maps linework.
San Francisco, CA San Francisco Co. United States	Crespi Dr. / Varela Ave. / Serrano Dr. / Gonzalez Dr. (37.71990, -122.47589)	Other Existing	Unknown Unknown	5 Approaches 0 Driveways 43.4574	Other (At-Grade) Single-Lane	1950	ICD estimated from Google Maps linework.
San Francisco, CA San Francisco Co. United States	Font Blvd. / Gonzalez Dr. (37.71679, -122.47592)	Other Existing	Unknown Unknown	4 Approaches 0 Driveways 30.2325	Other (At-Grade) Single-Lane	1950	ICD estimated from Google Maps linework.
San Francisco, CA San Francisco Co. United States	Juan Bautista Circle (37.71804, -122.47795)	Other Existing	All-Way Stop Unknown	7 Approaches 0 Driveways 120.9281	Other (At-Grade) Single-Lane	1950	ICD estimated from Google Maps linework.
San Francisco, CA San Francisco Co. United States	Grijalva Dr. / Gonzalez Dr. (37.71638, -122.47919)	Other Existing	Unknown Unknown	4 Approaches 0 Driveways 21.7298	Other (At-Grade) Single-Lane	1950	ICD estimated from Google Maps linework.
San Francisco, CA San Francisco Co. United States	Font Blvd. / Serrano Dr. (37.71957, -122.47976)	Other Existing	Unknown Unknown	4 Approaches 0 Driveways 32.1209	Other (At-Grade) Single-Lane	1950	ICD estimated from Google Maps linework.
San Francisco, CA San Francisco Co. United States	Bucareli Dr. / Gonzalez Dr. (37.71695, -122.48001)	Other Existing	Unknown Unknown	4 Approaches 0 Driveways 18.8953	Other (At-Grade) Single-Lane	1950	ICD estimated from Google Maps linework.
San Francisco, CA San Francisco Co. United States	Font Blvd. / Pinto Ave. / Holloway Ave. (37.72069, -122.48105)	Other Existing	Unknown Unknown	4 Approaches 0 Driveways 32.1204	Other (At-Grade) Single-Lane	1950	ICD estimated from Google Maps linework.
San Francisco, CA San Francisco Co. United States	Font Blvd. / Arballo Dr. (37.72177, -122.48231)	Other Existing	Unknown Unknown	4 Approaches 0 Driveways 35.8987	Other (At-Grade) Single-Lane	1950	ICD estimated from Google Maps linework.
San Francisco State University, CA San Francisco Co. United States	Font Blvd. / (parking lot) (37.72286, -122.48358)	Other Existing	One-Way/Two-Way Stop Unknown	3 Approaches 0 Driveways 33.0641	Other (At-Grade) Single-Lane	1950	ICD estimated from Google Maps linework.
Bellingham, WA Whatcom Co. United States	N State St. / Wharf St. / N Forest St. / Boulevard (48.74361, -122.48473)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 48.8297	Other (At-Grade) Single-Lane	2013	Open October 2013. ICD estimated from Google Maps linework.
Clackamas, OR Clackamas Co. United States	SE 172nd Ave. / SE Creekwood Rd. (45.41880, -122.48550)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 43.5928	Other (At-Grade) Multilane (2 Lane, unspecified)	2009	Creekwood Rd. is new roadway; SE 172nd Avenue is existing. ICD estimated from Google Maps linework.
Lynden, WA Whatcom Co. United States	SR 539 / Pole Rd. (48.89152, -122.48560)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 47.1153	Other (At-Grade) Multilane (2 Lane, unspecified)	2009	ICD estimated from Google Maps linework.
Lynden, WA Whatcom Co. United States	SR 539 / Wiser Lake Rd. (48.90677, -122.48560)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 47.1009	Other (At-Grade) Multilane (2 Lane, unspecified)	2009	ICD estimated from Google Maps linework.
Lynden, WA Whatcom Co. United States	SR 539 / River Rd. (48.92280, -122.48565)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 47.0858	Other (At-Grade) Multilane (2 Lane, unspecified)	2009	ICD estimated from Google Maps linework.
Happy Valley, OR Clackamas Co. United States	SE 172nd Ave. / Scouters Mountain Rd. (45.44074, -122.48574)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane	2021	East leg stubbed. https://www.happyvalleyor.gov/business/engineering-division/engineering-division/172nd-avenue-roundabout/
Lynden, WA Whatcom Co. United States	SR 539 / Ten Mile Rd. (48.86968, -122.48580)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 46.3503	Other (At-Grade) Multilane (2 Lane, unspecified)	2009	ICD estimated from Google Maps linework.
La Conner, WA Skagit Co. United States	LaConner-Whitney Rd. / Chilberg Rd. / Morris Sr. (48.39234, -122.48660)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 28.5504	Other (At-Grade) Single-Lane	2003	Roundabout replaces a Y intersection. The center island is under private ownership and contains an exisitng granite monument. Opened September 2003. Previously controlled by one-way stop Functional Class: Arterial ICD estimated from Google Maps linework.
Vancouver, WA Clark Co. United States	SR 500 (NE Fourth Plain Rd.) / NE182nd Ave. (45.67192, -122.48864)	Roundabout Existing	All-Way Yield Unknown	3 Approaches 0 Driveways 26.8221	Other (At-Grade) Single-lane w/ Traversable Central Island	2022	Compact roundabout. WSDOT project. Completed August 20, 2022. Colored apron with asphalt interior.
Bellingham, WA Whatcom Co. United States	Cordata Pkwy. / Westerly Dr. (48.79198, -122.49140)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 35.4068	Other (At-Grade) Multilane (2 Lane, unspecified)	2005	http://cob.org/documents/pw/curconst/ES-0237.pdf Functional Class: Arterial ICD estimated from Google Maps linework.
Bellingham, WA Whatcom Co. United States	Cordata Pkwy. / Kellogg Rd. (48.79511, -122.49170)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 39.3384	Other (At-Grade) Multilane (2 Lane, unspecified)	2003	Primary access to Whatcom Community College. Functional Class: Arterial ICD estimated from Google Maps linework.
Tacoma, WA Pierce Co. United States	S Tyler St. / S 66th St. (47.19746, -122.49280)	Roundabout Existing	Unknown Unknown	4 Approaches 0 Driveways 25.9685	Other (At-Grade) Single-Lane	2005	Opened July 2005. Fatal crash August 12. 2006. 11861-05. ICD estimated from Google Maps linework.
Sausalito, CA Marin Co. United States	Conzelman Rd. / McCullough Rd. (37.83361, -122.49400)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 29.2415	Other (At-Grade) Single-Lane	2010	ICD estimated from Google Maps linework.