| City, 
                State County Country | Intersection (Lat, Lng) | Type Status | Control Type / Other Control Type | Approaches / Driveways / ICD (m) | Functional Class / LaneType | Year Completed | Comments | 
|---|---|---|---|---|---|---|---|
| Kennewick,
                WA Benton Co. United States | Ridgeline Dr. / Plaza Way (46.17430, -119.19500) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 43.0057 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2013 | Functional Class: Collector ICD estimated from Google Maps linework. | 
| Bellingham,
                WA Whatcom Co. United States | Northwest Ave. / I-5 NB Ramp (48.78500, -122.50420) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 35.4117 | Freeway Ramps (Grade-Separated) Single-Lane | 2010 | RT bypass lane on southbound approach. ICD estimated from Google Maps linework. | 
| Everett,
                WA Snohomish Co. United States | 13th St. / 1st Ave. (48.00026, -122.21570) | Roundabout Existing | Unknown Unknown | 4 Approaches 0 Driveways 27.1714 | Other (At-Grade) Single-Lane | 2009 | ICD estimated from Google Maps linework. | 
| Ferndale,
                WA Whatcom Co. United States | I-5 SB Ramps / 2nd St. / Portal Way (48.85686, -122.58840) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 40.8616 | Other (At-Grade) Single-Lane | 2010 | ICD estimated from Google Maps linework. | 
| Anacortes,
                WA Skagit Co. United States | Commercial Ave. / SR20 Spur (48.49332, -122.61280) | Roundabout Existing | Unknown Unknown | 3 Approaches 0 Driveways 34.8256 | Other (At-Grade) Single-Lane | 2009 | ICD estimated from Google Maps linework. | 
| Issaquah,
                WA King Co. United States | East Lake Sammamish Parkway / SE 43rd Way (47.56792, -122.05500) | Roundabout Existing | Unknown Unknown | 3 Approaches 0 Driveways 38.6799 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2009 | ICD estimated from Google Maps linework. | 
| Lake Stevens,
                WA Snohomish Co. United States | Lundeen Parkway / Soper Hill Rd. (48.01557, -122.10010) | Roundabout Existing | Unknown Unknown | 4 Approaches 0 Driveways 29.5601 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2010 | ICD estimated from Google Maps linework. | 
| Ocean Shores,
                WA Grays Harbor Co. United States | Point Brown Ave / Chance a la Mer (47.00745, -124.16140) | Roundabout Existing | Unknown Unknown | 4 Approaches 0 Driveways 39.9064 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2009 | ICD estimated from Google Maps linework. | 
| Granite Falls,
                WA Snohomish Co. United States | Granite Falls Access Rd. / Burn Rd. (NE 100th St.) (48.08656, -121.99060) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 38.2954 | Other (At-Grade) Single-Lane | 2010 | November 2010. ICD estimated from Google Maps linework. | 
| Granite Falls,
                WA Snohomish Co. United States | Granite Falls Access Rd. / Jordan Rd (48.09135, -121.97980) | Roundabout Existing | All-Way Yield None | 5 Approaches 0 Driveways 55.0445 | Other (At-Grade) Single-Lane | 2010 | November 2010. ICD estimated from Google Maps linework. | 
| Granite Falls,
                WA Snohomish Co. United States | Granite Falls Access Rd. / SR 92 (48.08332, -121.99000) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 38.2978 | Other (At-Grade) Single-Lane | 2010 | May 2010. ICD estimated from Google Maps linework. | 
| Sammamish,
                WA King Co. United States | 244th Ave NE / NE 8th St (47.61673, -122.01390) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 33.0083 | Other (At-Grade) Single-Lane | 2010 | ICD estimated from Google Maps linework. | 
| Sammamish,
                WA King Co. United States | 244th Ave. NE / E Main Dr. (47.60881, -122.01390) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 22.5457 | Other (At-Grade) Single-Lane | 2010 | ICD estimated from Google Maps linework. | 
| Wenatchee,
                WA Chelan Co. United States | Riverside Dr. / 5th St. (47.43215, -120.31267) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 25.0455 | Other (At-Grade) Single-Lane | 2009 | October 2009. ICD estimated from Google Maps linework. | 
| 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. | 
| 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. | 
| Auburn,
                WA King Co. United States | 124 Ave. SE / SE 304th St. (47.32978, -122.17640) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 33.1891 | Other (At-Grade) Single-Lane | 2008 | July 2008. ICD estimated from Google Maps linework. | 
| Blaine,
                WA Whatcom Co. United States | I-5 SB Ramps / Peace Portal Dr. / Marine Dr. (48.99723, -122.75250) | Roundabout Existing | All-Way Yield At-grade Rail Crossing Signals/Gates (controlling approach only) | 4 Approaches 0 Driveways 26.6422 | Freeway Ramps (Grade-Separated) Single-Lane | 2010 | May 2010. Roundabout is ~200 ft from railroad crossing. ICD estimated from Google Maps linework. | 
| Blaine,
                WA Whatcom Co. United States | I-5 NB Ramps / D St. / 2nd St. (48.99810, -122.75140) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 33.6939 | Freeway Ramps (Grade-Separated) Single-Lane | 2010 | May 2010. ICD estimated from Google Maps linework. | 
| Blaine,
                WA Whatcom Co. United States | SR 548 (Grandview Rd.) / Blaine Rd. / (parking) (48.89206, -122.72655) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 38.1000 | Other (At-Grade) Single-Lane | 2010 | September 2010. Merging right-turn bypass lane on south leg. Right-turn-oinly lane on north leg. | 
| Bremerton,
                WA Kitsap Co. United States | Cross SKIA Connector / Harry Earl Rd. (47.50340, -122.75060) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 32.2730 | Other (At-Grade) Single-Lane | 2010 | September 2010. ICD estimated from Google Maps linework. | 
| Burlington,
                WA Skagit Co. United States | N Burlington Blvd. / (parking) (48.48060, -122.33544) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 45.7200 | Other (At-Grade) Multilane (2 Lane, 2x1 max) | 2008 | October 2008. Entrance to high school. | 
| Burlington,
                WA Skagit Co. United States | SR 11 (Chuckanut Dr.) / I-5 SB Ramps / Josh Wilson Rd. (48.48585, -122.33867) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 39.6240 | Freeway Ramps (Grade-Separated) Single-Lane | 2010 | Right-turn-only lanes on east and west legs. Replaced two T-intersections. September 2010. | 
| Burlington,
                WA Skagit Co. United States | SR 11 (Chuckanut Dr.) / I-5 NB Ramps / Old Hwy 99 (48.48359, -122.33559) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 39.6240 | Freeway Ramps (Grade-Separated) Single-Lane | 2010 | October 2010. Right-turn-only lanes on south and east legs. Merging right-turn-bypass lane on west leg. | 
| Covington,
                WA King Co. United States | 168th Pl. SE / Fred Meyer Entrance (47.35698, -122.11680) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 105.1794 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2008 | November 2008. Entrance into Fred Meyer shopping center. ICD estimated from Google Maps linework. | 
| Covington,
                WA King Co. United States | 168th Pl. SE / Costco Entrance (47.35463, -122.11860) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 39.6463 | Other (At-Grade) Single-Lane | 2008 | November 2008. Entrance into Costco shopping center. ICD estimated from Google Maps linework. | 
| Covington,
                WA King Co. United States | SE Wax Rd. / 180th Ave. SE / SE 267th Pl. (47.36216, -122.10200) | Roundabout Existing | All-Way Yield None | 5 Approaches 0 Driveways 53.3935 | Other (At-Grade) Single-Lane | 2008 | September 2008. ICD estimated from Google Maps linework. | 
| Deer Park,
                WA Spokane Co. United States | S Main St. / W H St. / E H St. (47.94695, -117.47693) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 30.4800 | Other (At-Grade) Single-Lane | 2010 | October 2010. Broke ground July 26, 2010. | 
| Deer Park,
                WA Spokane Co. United States | E Crawford Ave. / Weber Rd. (47.95444, -117.45384) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 41.1480 | Other (At-Grade) Single-Lane | 2009 | September 2009. | 
| Federal Way,
                WA King Co. United States | S 333rd St. / Community Center Entrance (47.30548, -122.32380) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 29.1550 | Other (At-Grade) Single-Lane | 2006 | January 2006. ICD estimated from Google Maps linework. | 
| Gig Harbor,
                WA Thurston Co. United States | Harbor Hill Dr. / (parking) (47.35845, -122.60116) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 45.7200 | Other (At-Grade) Multilane (2 Lane, 2x1 max) | 2008 | January 2008. | 
| Lacey,
                WA Thurston Co. United States | Rainier Rd. SE / SE Balustrade Blvd. (46.98697, -122.82220) | Roundabout Existing | All-Way Yield Active Pedestrian Warning (flashing yellow) | 4 Approaches 0 Driveways 45.7200 | Other (At-Grade) Single-Lane | 2005 | September 2005. Horizon Pointe subdivision. Serves as primary access to Horizon Pointe Elementary School. | 
| Lacey,
                WA Thurston Co. United States | (unknown) / (unknown) (47.04571, -122.76216) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 30.4800 | Other (At-Grade) Single-Lane | 2007 | Serves Lacey Regional Athletic Center. July 2007. | 
| Lake Stevens,
                WA Snohomish Co. United States | (unknown) (48.01194, -122.04305) | Roundabout Existing | All-Way Yield None | 2 Approaches 0 Driveways 30.4800 | Other (At-Grade) Single-Lane | 2009 | Entrance to Lake Stevens Community Park. January 2009. | 
| Lynnwood,
                WA Snohomish Co. United States | Ash Way / 18th Ave. SW (47.85489, -122.25737) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 35.0520 | Other (At-Grade) Single-Lane | 2009 | October 2009. | 
| Maple Valley,
                WA King Co. United States | Witte Rd. SE / SE 248th St. (47.37966, -122.04813) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 36.5760 | Other (At-Grade) Single-Lane | 2011 | January 2011. | 
| Monroe,
                WA Snohomish Co. United States | Country Crescent SE / County Crescent SE (47.86547, -121.96140) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 30.4800 | Other (At-Grade) Single-Lane | 2002 | July 2002. | 
| 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. | 
| North Bend,
                WA King Co. United States | E North Bend Way / SE Cedar Falls Way / (parking) (47.49096, -121.77876) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 42.6720 | Other (At-Grade) Single-Lane | 2008 | August 2008. | 
| Olympia,
                WA Thurston Co. United States | Capitol Way N / Market St. NE / Corky Ave. NW / (parking) (47.05005, -122.90244) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 35.0520 | Other (At-Grade) Single-Lane | 1995 | Painted splitter islands. June 1995. | 
| Olympia,
                WA Thurston Co. United States | Boulevard Rd. SE / Log Cabin Rd. SE (47.01433, -122.86520) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 39.0870 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2009 | Opened November 2009. Left-turn only lanes on north and south legs with spiralling. ICD estimated from Google Maps linework. | 
| Olympia,
                WA Thurston Co. United States | Jefferson St SE / 14th Ave. SE (47.03555, -122.89581) | Roundabout Existing | All-Way Yield Rectangular Rapid Flashing Beacon (RRFB) | 4 Approaches 0 Driveways 45.7200 | Other (At-Grade) Multilane (2 Lane, 2x2 max) | 2010 | Double-left turn from north leg; double-right turn from south leg. October 2010. | 
| Olympia,
                WA Thurston Co. United States | Yelm Hwy SE / Boulevard Rd. SE (47.00397, -122.86540) | Roundabout Existing | All-Way Yield Rectangular Rapid Flashing Beacon (RRFB) | 3 Approaches 1 Driveways 45.7200 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2011 | May 2011. Right-turn-only lane on north leg. Located about 1000 feet from Centennial Elementary School and serves as a walking and school bus route. | 
| Olympia,
                WA Thurston Co. United States | Yelm Hwy SE / Brassfield Rd. SE (47.00372, -122.87309) | Roundabout Existing | All-Way Yield None | 3 Approaches 1 Driveways 45.7200 | Other (At-Grade) Multilane (2 Lane, 2x1 max) | 2011 | May 2011. | 
| Olympia,
                WA Thurston Co. United States | 18th Ave. SE / Fones Rd. SE (47.03250, -122.84697) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 39.6240 | Other (At-Grade) Single-Lane | 2010 | Double-right turn on north leg. October 2010. | 
| Olympia,
                WA Thurston Co. United States | 18th Ave. SE / Hoffman Rd. SE / Ontario St. SE (47.03250, -122.84959) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 35.8175 | Other (At-Grade) Single-Lane | 2010 | Opened October 2010. ICD estimated from Google Maps linework. | 
| Redmond,
                WA King Co. United States | Eastridge Dr. NE / NE Cedar Park Crescent (47.69141, -122.01690) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 33.5280 | Other (At-Grade) Single-Lane | 2012 | |
| Port Townsend,
                WA Jefferson Co. United States | SR 20 (Sims Way) / Howard St. / Evans Vista (48.10260, -122.80500) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 41.1480 | Other (At-Grade) Single-Lane | 2010 | April 2010. | 
| Port Townsend,
                WA Jefferson Co. United States | SR 20 (Sims Way) / Thomas St. (48.10333, -122.79891) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 41.1480 | Other (At-Grade) Single-Lane | 2010 | July 2010. | 
| Puyallup,
                WA Pierce Co. United States | 15th Ave. SE / 3rd St. SE (47.17741, -122.29100) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 32.0040 | Other (At-Grade) Single-Lane | 2010 | June 2010. | 
| Redmond,
                WA King Co. United States | 152nd Ave. NE / NE 36th Pl. / NE 31st St. (47.63828, -122.13550) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 27.3615 | Other (At-Grade) Single-Lane | 2010 | Near Microsoft campus. Moderate ped/bike volumes. ICD estimated from Google Maps linework. | 
| Renton,
                WA King Co. United States | N 10th St. / N 10th Pl. (47.49781, -122.20468) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 33.5280 | Other (At-Grade) Single-Lane | 2008 | June 2008. | 
| Richland,
                WA Benton Co. United States | Lee Blvd. / The Parkway (46.27484, -119.27433) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 25.9080 | Other (At-Grade) Single-Lane | 2002 | No splitter islands on north and south legs. Year Completed estimated (1996-2003). | 
| Sedro-Woolley,
                WA Skagit Co. United States | SR 9-SR 20 (Cascade Loop) / Patrick St. / Skagit Way (48.51051, -122.24156) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 36.5760 | Other (At-Grade) Single-Lane | 2009 | Elliptical shaped. ICD = 120 ft x 105 ft. August 2009. ICD estimated from Google Maps linework. | 
| Selah,
                WA Yakima Co. United States | Gore Rd. / Selah Loop Rd. (46.67943, -120.53061) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 38.1000 | Other (At-Grade) Single-Lane | 2008 | August 2008. Replaced triangle intersection. | 
| Sequim,
                WA Clallam Co. United States | W Washington St. / S 9th Ave. (48.07909, -123.12400) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 39.6240 | Other (At-Grade) Single-Lane | 2007 | May 2007. | 
| Snoqualmie,
                WA King Co. United States | North Bend Way / (Snoqualmie Casino entrance) (47.51671, -121.84100) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 33.5280 | Other (At-Grade) Multilane (2 Lane, 2x1 max) | 2008 | Through bypass lane on west leg. October 2008. ICD estimated from Google Maps linework. | 
| Spokane,
                WA Spokane Co. United States | W Pacific Ave. / S Cannon St. (47.65555, -117.44160) | Traffic Calming Circle Existing | All-Way Yield None | 4 Approaches 0 Driveways 0.0000 | Other (At-Grade) Single-Lane | 2006 | No splitter islands on north and south legs. Pedestrian crossings within circulatory roadway. April 2006. | 
| Spokane Valley,
                WA Spokane Co. United States | E Montgomery Dr. / E Mansfield Ave. (47.67753, -117.24790) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 39.6240 | Other (At-Grade) Single-Lane | 2009 | April 2009. | 
| Spokane Valley,
                WA Spokane Co. United States | Flora Rd. / E Mission Ave. / E Indiana Pkwy. - E Mission Pkwy. (47.67154, -117.17516) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 38.1000 | Other (At-Grade) Single-Lane | 2010 | E Indiana Pkwy is west leg entrance; E Mission Pkwy is west leg exit. November 2010. | 
| Tumwater,
                WA Thurston Co. United States | Littlerock Rd. SW / Tumwater Blvd. SW (46.98283, -122.93544) | Roundabout Existing | All-Way Yield None | 3 Approaches 1 Driveways 45.7200 | Other (At-Grade) Multilane (2 Lane, 2x1 max) | 2009 | July 2009. | 
| Tumwater,
                WA Thurston Co. United States | Littlerock Rd. SW / Israel Rd. SW / 70th Ave. SW (46.98554, -122.93236) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 38.1000 | Other (At-Grade) Multilane (2 Lane, 2x1 max) | 2009 | October 2009. | 
| Tumwater,
                WA Thurston Co. United States | Littlerock Rd. SW / Odegard Rd. SW (46.98985, -122.92650) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 36.5760 | Other (At-Grade) Single-Lane | 2010 | June 2010. | 
| Tumwater,
                WA Thurston Co. United States | Littlerock Rd. SW / Kingswood Dr. SW (46.99435, -122.92190) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 42.6720 | Other (At-Grade) Multilane (2 Lane, 2x1 max) | 2010 | September 2010. | 
| Vancouver,
                WA Clark Co. United States | NE 10th Ave. / NE 136th St. / Clark Ave. (45.71980, -122.66037) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 39.6240 | Other (At-Grade) Single-Lane | 2011 | Clark Ave. is one way exit. May 2011. | 
| Walla Walla,
                WA Walla Walla Co. United States | Myra Rd. / W Pine St. / Heritage Rd. (46.06841, -118.36972) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 56.3880 | Other (At-Grade) Multilane (2 Lane, 2x1 max) | 2008 | December 2008. | 
| Walla Walla,
                WA Walla Walla Co. United States | Myra Rd. / SR 12 EB Ramps (46.06933, -118.36979) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 39.6240 | Freeway Ramps (Grade-Separated) Single-Lane | 2010 | Raindrop shaped. July 2010. ICD estimated from Google Maps linework. | 
| Walla Walla,
                WA Walla Walla Co. United States | Myra Rd. / SR 12 WB Ramps (46.07040, -118.36987) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 38.1000 | Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified) | 2010 | Raindrop shaped. July 2010. | 
| Wenatchee,
                WA Chelan Co. United States | Riverside Dr. / Island View (47.43461, -120.31477) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 19.8120 | Other (At-Grade) Single-Lane | 2009 | Painted splitter islands. October 2009. | 
| East Wenatchee,
                WA Douglas Co. United States | Grant Rd. / Airport Way / Urban Industrial Dr. (47.40592, -120.20780) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 45.7200 | Other (At-Grade) Single-Lane | 2010 | Add-lane right-turn bypass lanes on north and west legs. July 2010. | 
| Woodinville,
                WA King Co. United States | SR 202 / NE 145th St. / 148th Ave. NE (47.73271, -122.14220) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 47.2440 | Other (At-Grade) Multilane (2 Lane, 2x1 max) | 2009 | October 2009. | 
| Woodinville,
                WA King Co. United States | SR 202 / Village Dr. / NE 144th St. (47.73111, -122.14040) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 38.4048 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2009 | Constructed as single-lane roundabout in October 2009 and expanded to include second lane northbound in 2021. | 
| Woodinville,
                WA King Co. United States | SR 202 / (parking) (47.73280, -122.14400) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 33.5280 | Other (At-Grade) Single-Lane | 2009 | October 2009. | 
| Woodland,
                WA Cowlitz Co. United States | Insel Rd. / Willow St. (45.92237, -122.73400) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 35.0520 | Other (At-Grade) Single-Lane | 2009 | June 2009. | 
| Woodland,
                WA Cowlitz Co. United States | Dike Access Rd. / Schurman Way / (parking) (45.92664, -122.75957) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 39.6240 | Other (At-Grade) Single-Lane | 2012 | |
| Woodland,
                WA Cowlitz Co. United States | Dike Access Rd. / I-5 NB Ramps (45.92780, -122.75522) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 42.6720 | Freeway Ramps (Grade-Separated) Single-Lane | 2010 | Raindrop shaped. December 2010. | 
| Woodland,
                WA Cowlitz Co. United States | Dike Access Rd. / I-5 SB Ramps (45.92699, -122.75780) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 42.6720 | Freeway Ramps (Grade-Separated) Single-Lane | 2010 | December 2010. | 
| 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. | 
| 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. | 
| 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. | 
| Ridgefield,
                WA Clark Co. United States | SR 501 (Pioneer St.) / S 56th Pl. (45.81582, -122.69070) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 51.8160 | Other (At-Grade) Multilane (2 Lane, 2x1 max) | 2012 | |
| Ridgefield,
                WA Clark Co. United States | SR 501 (Pioneer St.) / S 65th Ave. (45.81600, -122.68230) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 54.8640 | Other (At-Grade) Multilane (2 Lane, 2x1 max) | 2012 | |
| 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. | 
| Auburn,
                WA Pierce Co. United States | Peasley Canyon Rd. / Peasley Canyon Way (47.30340, -122.27190) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 28.3463 | Other (At-Grade) Single-Lane | 2012 | Opened January 2012. ICD estimated from Google Maps linework. | 
| Swinomish Tribal Community,
                WA Skagit Co. United States | Knudsen Ln. / Casino Dr. (48.45635, -122.51910) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 33.2668 | Other (At-Grade) Single-Lane | 2013 | Year Completed estimated (2012-2013). ICD estimated from Google Maps linework. | 
| Yakima,
                WA Yakima Co. United States | E Valley Mall Blvd. / S Rudkin Rd. (46.56300, -120.47520) | Roundabout Existing | Unknown Unknown | 4 Approaches 0 Driveways 35.3102 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2010 | Functional Class: Arterial ICD estimated from Google Maps linework. | 
| Yakima,
                WA Yakima Co. United States | E. Valley Mall Blvd. / I-82 EB Ramps (46.56298, -120.47290) | Roundabout Existing | Unknown Unknown | 5 Approaches 0 Driveways 54.1971 | Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified) | 2010 | ICD estimated from Google Maps linework. | 
| Yakima,
                WA Yakima Co. United States | E. Valley Mall Blvd. / I-82 WB Ramps (46.56298, -120.47170) | Roundabout Existing | Unknown Unknown | 3 Approaches 0 Driveways 98.5403 | Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified) | 2011 | ICD estimated from Google Maps linework. | 
| Anacortes,
                WA Skagit Co. United States | Pennsylvania Ave. / W 12th St. (48.49817, -122.65669) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways | Other (At-Grade) Single-Lane | 2010 | Built for the purpose of traffic calming near a residential park area. Concrete-asphalt. | 
| Redmond,
                WA King Co. United States | Eastridge Dr. NE / 244th Pl. NE (47.68499, -122.01300) | Roundabout Existing | All-Way Yield None | 3 Approaches 1 Driveways 16.8846 | Other (At-Grade) Single-lane w/ Traversable Central Island | 2014 | Open July 2014. ICD estimated from Google Maps linework. | 
| Lake Stevens,
                WA Snohomish Co. United States | Lundeen Park Way / Callow Rd. / Lakeview Dr. / Vernon Rd. (48.01797, -122.09050) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 31.9553 | Other (At-Grade) Single-Lane | 2006 | http://www1.co.snohomish.wa.us/Departments/Public_Works/Services/Roads/Projects/LundeenCallow.htm. Opened June 2006. ICD estimated from Google Maps linework. | 
| Arlington,
                WA Snohomish Co. United States | W. Division St. / N. West Ave. (48.19864, -122.12800) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 27.8628 | Other (At-Grade) Single-Lane | 2002 | September 2002. ICD estimated from Google Maps linework. | 
| Arlington,
                WA Snohomish Co. United States | E. Division St. / N. Broadway St. (48.19858, -122.12530) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 23.8824 | Other (At-Grade) Single-Lane | 2002 | September 2002. ICD estimated from Google Maps linework. | 
| Fall City,
                WA King Co. United States | SR 202 / SR 203 (47.56919, -121.88690) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 21.7569 | Other (At-Grade) Single-Lane | 2007 | Completed October 2007. ICD estimated from Google Maps linework. | 
| Dupont,
                WA Thurston Co. United States | Hoffman Hill Blvd. / Burnside Pl. (47.09605, -122.67150) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 26.8311 | Other (At-Grade) Single-Lane | 2004 | Completed January 2004. ICD estimated from Google Maps linework. | 
| Dupont,
                WA Thurston Co. United States | McNeil St. / Gaul Ave. (47.09734, -122.66080) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 26.0174 | Other (At-Grade) Single-Lane | 2001 | Completed May 2001. ICD estimated from Google Maps linework. | 
| Dupont,
                WA Thurston Co. United States | McNeil St. / Marshall Cir. (47.09618, -122.65520) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 26.8311 | Other (At-Grade) Single-Lane | 2001 | Completed May 2001. ICD estimated from Google Maps linework. | 
| Cle Elum,
                WA Kittitas Co. United States | Bullfrog Rd. / Suncadia Trl. (47.19987, -120.98731) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 42.6720 | Other (At-Grade) Single-Lane | 2004 | Completed July 2004. |