| City, 
                State County Country | Intersection (Lat, Lng) | Type Status | Control Type / Other Control Type | Approaches / Driveways / ICD (m) | Functional Class / LaneType | Year Completed | Comments | 
|---|---|---|---|---|---|---|---|
| Nisqually,
                WA Thurston Co. United States | SR 510 / Yelm Hwy SE (47.00928, -122.68839) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 62.7079 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2013 | Right-turn bypass lane on southwest leg. Open December 2013. ICD estimated from Google Maps linework. | 
| Mattawa,
                WA Grant Co. United States | SR 243 / Road 24 SW (46.73775, -119.91718) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 39.2889 | Other (At-Grade) Single-Lane | 2014 | Reverse curves on north and south legs. Open May 2014. ICD estimated from Google Maps linework. | 
| Hunts Point,
                WA King Co. United States | 84th Ave. NE / NE 30th St. (47.63651, -122.22817) | Traffic Calming Circle Existing | All-Way Yield None | 3 Approaches 0 Driveways 159.3457 | Other (At-Grade) Single-Lane | 2014 | Originally built between 1990 and 2002. Modified June 2014 to realign south leg. No splitter islands. ICD estimated from Google Maps linework. | 
| Hunts Point,
                WA King Co. United States | Hunts Point Rd. / NE 28th St. / 84th Ave. NE / SR 520 ramps (47.63600, -122.22744) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 42.6536 | Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified) | 2014 | Open June 2014. ICD estimated from Google Maps linework. | 
| Joint Base Lewis-McChord,
                WA Pierce Co. United States | D St. / South Dr. / Integrity Gate (47.11600, -122.61932) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 46.3273 | Other (At-Grade) Single-Lane | 2014 | Open July 2014. ICD estimated from Google Maps linework. | 
| Snohomish,
                WA Snohomish Co. United States | Ave. D / Bickford Ave. / 15th St. (47.93037, -122.10101) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 79.2238 | Other (At-Grade) Single-Lane | 2014 | Open July 2014. ICD estimated from Google Maps linework. | 
| Yarrow Point,
                WA King Co. United States | 92nd Ave. NE / NE Points Dr. / NE 33rd St. / SR 520 WB Off-Ramp (47.64153, -122.21728) | Roundabout Existing | All-Way Yield None | 5 Approaches 0 Driveways 86.9075 | Freeway Ramps (Grade-Separated) Single-Lane | 2014 | Open August 2014. ICD estimated from Google Maps linework. | 
| Ruston,
                WA Pierce Co. United States | Main St. / Bay View Corridor (47.29744, -122.50297) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 25.1095 | Other (At-Grade) Single-Lane | 2014 | Open September 2014. ICD estimated from Google Maps linework. | 
| Ruston,
                WA Pierce Co. United States | N Ruston Way / Grand Ave. (47.29725, -122.50488) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 79.3788 | Other (At-Grade) Single-Lane | 2012 | ICD estimated from Google Maps linework. | 
| Ruston,
                WA Pierce Co. United States | N Ruston Way / Baltimore St. / N 51st St. / Yacht Club Rd. (47.29908, -122.50894) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 101.2449 | Other (At-Grade) Single-Lane | 2012 | ICD estimated from Google Maps linework. | 
| Marysville,
                WA Snohomish Co. United States | SR 531 (172nd St. NE) / 23rd Ave. NE (48.15210, -122.19919) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 41.1480 | Other (At-Grade) Single-Lane | 2016 | Open January 2016. | 
| Cashmere,
                WA Chelan Co. United States | N Division St. / Cottage Ave. (47.52214, -120.46999) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 24.3840 | Other (At-Grade) Single-lane w/ Traversable Central Island | 2015 | Open October 2015. | 
| Lacey,
                WA Thurston Co. United States | Willamette Dr. NE / 31st Ave. NE (47.07789, -122.75228) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 43.9205 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2015 | Open October 2015. ICD estimated from Google Maps linework. | 
| Seabeck,
                WA Kitsap Co. United States | Seabeck Hwy NW / NW Holly Rd. (47.60901, -122.75692) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways | Other (At-Grade) Single-Lane | 2015 | Open October 2015. | 
| Woodland,
                WA Cowlitz Co. United States | SR 503 (Lewis River Rd.) / Scott Ave. (45.91699, -122.74009) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 40.7138 | Other (At-Grade) Single-Lane | 2015 | Open September 2015. ICD estimated from Google Maps linework. | 
| Lynnwood,
                WA Snohomish Co. United States | 68th Ave. W / 204th St. SW (47.81409, -122.32484) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 20.0509 | Other (At-Grade) Single-Lane | 2015 | Edmonds Community College. Open August 2015. ICD estimated from Google Maps linework. | 
| Kelso,
                WA Cowlitz Co. United States | SR 432 / Old Hwy 99 / I-5 NB Ramps / Kelso Dr. (46.10491, -122.87586) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 32.0040 | Freeway Ramps (Grade-Separated) Single-Lane | 2015 | Open August 2015. Elliptical shape. ICD = approximately 110 ft x 100 ft. | 
| Joint Base Lewis-McChord,
                WA Pierce Co. United States | Colorado Ave. / Garcia Blvd. (47.09688, -122.58387) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 41.4657 | Other (At-Grade) Single-Lane | 2015 | Open January 2015. ICD estimated from Google Maps linework. | 
| Monroe,
                WA Snohomish Co. United States | W Main St. / SR 522 SB Ramps (47.84883, -122.00879) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 60.9600 | Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified) | 2014 | Right-turn bypass lane on west leg. Open December 2014. | 
| Bonney Lake,
                WA Pierce Co. United States | 198th Ave. E / Cascadia Blvd. E (47.12299, -122.16688) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 44.6959 | Other (At-Grade) Single-Lane | 2008 | Fourth (southeast) leg added 2018. ICD estimated from Google Maps linework. | 
| Bonney Lake,
                WA Pierce Co. United States | Cascadia Blvd E / Canyon View Blvd. E (47.12810, -122.17464) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 44.6916 | Other (At-Grade) Single-Lane | 2008 | ICD estimated from Google Maps linework. | 
| Bonney Lake,
                WA Pierce Co. United States | Cascadia Blvd E. / Forest Park Blvd. E (47.12820, -122.18033) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 39.0035 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2014 | Open December 2014. ICD estimated from Google Maps linework. | 
| Edmonds,
                WA Snohomish Co. United States | 212th St. SW / 84th Ave. W / SW Bowdoin Way (47.80701, -122.34716) | Roundabout Existing | All-Way Yield None | 5 Approaches 0 Driveways 113.9049 | Other (At-Grade) Single-Lane | 2014 | Open November 2014. ICD estimated from Google Maps linework. | 
| Marysville,
                WA Snohomish Co. United States | SR 9 / 84th St. NE / Getchell Rd. (48.07196, -122.11135) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 39.6240 | Other (At-Grade) Single-Lane | 2014 | Right-turn-only lanes on all four legs. Open October 2014. | 
| Wenatchee,
                WA Chelan Co. United States | US 97 Alt / Ohme Garden Rd. / Warehouse Way (47.48082, -120.32091) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 33.0940 | Other (At-Grade) Single-Lane | 2012 | Open October 2012. ICD estimated from Google Maps linework. | 
| Spokane,
                WA Spokane Co. United States | N Waikiki Rd. / N Mill Rd. (47.76113, -117.42815) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 30.5085 | Other (At-Grade) Single-Lane | 2012 | Open October 2012. ICD estimated from Google Maps linework. | 
| Redmond,
                WA King Co. United States | NE Novelty Hill Rd. / 195th Ave. NE (47.68845, -122.07993) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 38.5909 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2012 | Open October 2012. ICD estimated from Google Maps linework. | 
| Redmond,
                WA King Co. United States | NE Union Hill Rd. / 196th Ave. NE (47.67501, -122.07901) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 48.7680 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2012 | Open September 2012. | 
| Arlington,
                WA Snohomish Co. United States | SR 531 (172nd St NE) / SR 9 (48.15166, -122.11325) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 40.6373 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2012 | Open October 2012. ICD estimated from Google Maps linework. | 
| Joint Base Lewis-McChord,
                WA Pierce Co. United States | Portland Ave. SW / Boundary St. SW / Camp Murray Gate (47.12106, -122.56300) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 27.6312 | Other (At-Grade) Single-Lane | 2012 | Open October 2012. ICD estimated from Google Maps linework. | 
| Silverdale,
                WA Kitsap Co. United States | Silverdale Way NW / Chico Way NW / NW Newberry Hill Rd. (47.63704, -122.70135) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 15.2906 | Other (At-Grade) Single-Lane | 2012 | Open September 2012. ICD estimated from Google Maps linework. | 
| Poulsbo,
                WA Kitsap Co. United States | NE Lincoln Rd / Noll Rd. NE / Gala Way NE (47.75092, -122.61274) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 39.6240 | Other (At-Grade) Single-Lane | 2012 | Open September 2012. Replaced two offset T-intersections. | 
| Sammamish,
                WA King Co. United States | NE 8th St. / 233rd Ave NE (47.61687, -122.02903) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 63.6012 | Other (At-Grade) Single-Lane | 2012 | Open September 2012. ICD estimated from Google Maps linework. | 
| Joint Base Lewis-McChord,
                WA Pierce Co. United States | Murray Rd. SW / 150th St. SW (47.12084, -122.54259) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 48.7680 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2012 | Open September 2012. | 
| Mill Creek,
                WA Snohomish Co. United States | SE 116th St. / 56th Ave SE (47.89201, -122.15856) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 80.8842 | Other (At-Grade) Single-lane w/ Traversable Central Island | 2012 | Open August 2012. ICD estimated from Google Maps linework. | 
| Pasco,
                WA Franklin Co. United States | N 4th Ave. / N 3rd Ave. / W Marie St. (46.23961, -119.09537) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 61.1277 | Other (At-Grade) Single-Lane | 2012 | Open August 2012. ICD estimated from Google Maps linework. | 
| Airway Heights,
                WA Spokane Co. United States | Sprague Ave. / Quest Dr. (47.65441, -117.56614) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 51.4880 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2012 | Open July 2012. Concentric circulatory roadway striping. ICD estimated from Google Maps linework. | 
| Lake Stevens,
                WA Snohomish Co. United States | N Davies Rd. / Frontier Village Access Rd. (48.00472, -122.10462) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 18.2880 | Other (At-Grade) Single-lane w/ Traversable Central Island | 2012 | Painted splitter islands. Open July 2012. | 
| Pasco,
                WA Franklin Co. United States | Saraceno Way / (Columbia Basin College entrance) (46.25374, -119.12143) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 30.5560 | Other (At-Grade) Single-Lane | 2000 | Year Completed estimated (1996-2003). ICD estimated from Google Maps linework. | 
| Federal Way,
                WA King Co. United States | S 308th St. / 14th Ave. S (47.32601, -122.31601) | Roundabout Existing | All-Way Yield Rectangular Rapid Flashing Beacon (RRFB) | 4 Approaches 0 Driveways 19.5072 | Other (At-Grade) Single-lane w/ Traversable Central Island | 2014 | This is a mini-roundabout with fully traversable center island. Inscribed diameter is about 64 feet, opened in August 2014. An RRFB is present at the school crossing on the east leg; the previous raised crosswalk was removed. The north leg is a driveway to the newly remodeled high school. Both streets are Minor Collectors with 25 mph speed limits. | 
| Federal Way,
                WA King Co. United States | 3rd Ave. SW / SW 330th St. (47.30636, -122.33874) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 17.8167 | Other (At-Grade) Single-Lane | 2014 | This is a "Compact" single-lane roundabout with center island landscaping and a truck apron, inscribed circle diameter is 76 feet. Pedestrian refuge islands on the east-west approaches provide channelization. ICD estimated from Google Maps linework. | 
| Federal Way,
                WA King Co. United States | SW 330th St. / 6th Ave. SW (47.30622, -122.34230) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 20.2463 | Other (At-Grade) Single-Lane | 2014 | This is a "Compact" urban roundabout with central island landscaping and a truck apron, inscribed diameter is 76 feet. Pedestrian refuge islands on the east-west approaches provide channelization. This and the one at 3rd Ave SW / SW 330th Street were opened in November 2014. ICD estimated from Google Maps linework. | 
| 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. | 
| Kent,
                WA King Co. United States | SE 244th St. / 100th Ave. SE (47.38335, -122.20736) | Traffic Calming Circle Existing | Other None | 4 Approaches 0 Driveways 11.3213 | Other (At-Grade) Single-Lane | 2016 | This is now a dog bone-shaped traffic circle with two-way Yield control on the east and west approaches and no control north-south. Previous control was stop-control on the east leg only before the west leg was built. ICD estimated from Google Maps linework. | 
| Chehalis,
                WA Lewis Co. United States | NW West St. / NW Pennsylvania Ave. (46.66652, -122.97639) | Traffic Calming Circle Existing | One-Way/Two-Way Stop None | 4 Approaches 0 Driveways | Other (At-Grade) Unknown | 2008 | Year Completed estimated (2006-2009). | 
| Chehalis,
                WA Lewis Co. United States | NW Louisiana Ave. / Car Dealership Access (46.68261, -122.97338) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 38.5097 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2013 | ICD estimated from Google Maps linework. | 
| Vancouver,
                WA Clark Co. United States | Fort Vancouver Way. / Evergreen Blvd. (45.62863, -122.66310) | Other Existing | All-Way Stop Unknown | 4 Approaches 0 Driveways 40.0897 | Other (At-Grade) Single-Lane | ICD estimated from Google Maps linework. | |
| Vancouver,
                WA Clark Co. United States | NE 44th St. / NE 137th Ave. (45.65377, -122.53207) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 25.8796 | Other (At-Grade) Single-Lane | 2013 | ICD estimated from Google Maps linework. | 
| Vancouver,
                WA Clark Co. United States | NE 39th St. / NE 137th Ave. / NE 138th Ave. (45.65025, -122.53209) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 38.4044 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2013 | ICD estimated from Google Maps linework. | 
| Vancouver,
                WA Clark Co. United States | NE 32nd Cir. / NE 138th Ave. (45.64517, -122.53057) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 40.0778 | Other (At-Grade) Single-Lane | 2013 | ICD estimated from Google Maps linework. | 
| Ridgefield,
                WA Clark Co. United States | NW 319th St. / NW 31st Ave. (45.85093, -122.70594) | Roundabout Existing | All-Way Yield Unknown | 4 Approaches 0 Driveways 48.7680 | Other (At-Grade) Multilane (2 Lane, 2x1 max) | 2017 | Part of Ilani Casino interchange project. | 
| Ridgefield,
                WA Clark Co. United States | NW 319th St. / I-5 SB Ramps (45.85163, -122.70380) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 48.7680 | Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified) | 2017 | Part of Ilani Casino interchange project. | 
| Ridgefield,
                WA Clark Co. United States | NW La Center Rd. / I-5 NB Ramps (45.85214, -122.70160) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 51.8160 | Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified) | 2017 | Part of Ilani Casino interchange project. | 
| 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 | |
| Vancouver,
                WA Clark Co. United States | NE 18th St. / I-205 SB On Ramp (45.63554, -122.56193) | Roundabout Existing | All-Way Yield None | 2 Approaches 0 Driveways 33.4039 | Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified) | 2016 | ICD estimated from Google Maps linework. | 
| Ferndale,
                WA Whatcom Co. United States | Slater Rd. / I-5 SB Ramps (48.81713, -122.54999) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 38.1000 | Freeway Ramps (Grade-Separated) Multilane (2 Lane, 2x1 max) | 2014 | Initially installed in November 2014 as a single-lane with a traversable central island. Includes a yield-controlled right-turn bypass lane. Modified in 2024-2025 to 2x1 with yield-controlled right-turn-only lane on north and west legs. | 
| Ferndale,
                WA Whatcom Co. United States | Slater Rd. / I-5 NB Ramps (48.81737, -122.54604) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 27.5247 | Freeway Ramps (Grade-Separated) Single-lane w/ Traversable Central Island | 2014 | Includes yield-controlled right-turn bypass lanes. Open November 2014. ICD estimated from Google Maps linework. | 
| Ferndale,
                WA Whatcom Co. United States | Slater Rd. / Pacific Hwy. (48.81718, -122.54435) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 18.8741 | Other (At-Grade) Single-lane w/ Traversable Central Island | 2014 | Open November 2014. ICD estimated from Google Maps linework. | 
| Lakewood,
                WA Pierce Co. United States | Main St. SW / 5th Ave. SW (47.16198, -122.51570) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 28.4220 | Other (At-Grade) Single-Lane | 2002 | Completed June 2002. ICD estimated from Google Maps linework. | 
| Marysville,
                WA Snohomish Co. United States | 34th Ave. NE-Quil Ceda Blvd. / Tulalip Casino entrance (48.08801, -122.18560) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 74.9927 | Other (At-Grade) Single-Lane | 2001 | Opened October 2001 as multilane roundabout. Modified April 2014 to reduce to single-lane roundabout with right-turn-only lanes. ICD estimated from Google Maps linework. 21442 | 
| Marysville,
                WA Snohomish Co. United States | Shoultes Rd. / 51st Ave. NE / 108th St. NE (48.09268, -122.16210) | Roundabout Existing | Unknown Unknown | 4 Approaches 0 Driveways 29.5158 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2006 | Opened September 2006. ICD estimated from Google Maps linework. | 
| Marysville,
                WA Snohomish Co. United States | 34th Ave. NE / Quil Ceda Blvd. (48.10637, -122.18610) | Roundabout Existing | Unknown Unknown | 3 Approaches 0 Driveways 35.0906 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2007 | Opened May 2007. ICD estimated from Google Maps linework. | 
| Seattle,
                WA King Co. United States | Meridian Ave. N / N 42nd St. (47.65797, -122.33380) | Traffic Calming Circle Existing | Unknown Unknown | 0 Approaches 0 Driveways | Other (At-Grade) Unknown | ||
| Seattle,
                WA King Co. United States | Bagley Ave. N / N 43rd St. (47.65912, -122.33260) | Traffic Calming Circle Existing | Unknown Unknown | 0 Approaches 0 Driveways | Other (At-Grade) Unknown | ||
| Seattle,
                WA King Co. United States | Burke Ave. N / N 43rd St. (47.65915, -122.33500) | Traffic Calming Circle Existing | Unknown Unknown | 0 Approaches 0 Driveways | Other (At-Grade) Unknown | ||
| Seattle,
                WA King Co. United States | Burke Ave. N / N 44th St. (47.66031, -122.33500) | Traffic Calming Circle Existing | Unknown Unknown | 0 Approaches 0 Driveways 16.8926 | Other (At-Grade) Unknown | ICD estimated from Google Maps linework. | |
| Seattle,
                WA King Co. United States | Meridian Ave. N / N 44th St. (47.66030, -122.33370) | Traffic Calming Circle Existing | Unknown Unknown | 0 Approaches 0 Driveways 20.9147 | Other (At-Grade) Unknown | ICD estimated from Google Maps linework. | |
| Seattle,
                WA King Co. United States | Meridian Ave. N / N 43rd St. (47.65914, -122.33380) | Traffic Calming Circle Existing | Unknown Unknown | 0 Approaches 0 Driveways | Other (At-Grade) Unknown | ||
| Seattle,
                WA King Co. United States | Bagley Ave. N / N 44th St. (47.66029, -122.33260) | Traffic Calming Circle Existing | Unknown Unknown | 0 Approaches 0 Driveways | Other (At-Grade) Unknown | ||
| Seattle,
                WA King Co. United States | 2nd Ave. NE / NE 44th St. (47.66022, -122.32730) | Traffic Calming Circle Existing | Unknown Unknown | 0 Approaches 0 Driveways 33.7853 | Other (At-Grade) Unknown | ICD estimated from Google Maps linework. | |
| Seattle,
                WA King Co. United States | Corliss Ave. N / N 43rd St. (47.65912, -122.33140) | Traffic Calming Circle Existing | Unknown Unknown | 0 Approaches 0 Driveways | Other (At-Grade) Unknown | ||
| Seattle,
                WA King Co. United States | Corliss Ave. N / N 42nd St. (47.65795, -122.33140) | Traffic Calming Circle Existing | Unknown Unknown | 0 Approaches 0 Driveways 13.6756 | Other (At-Grade) Unknown | ICD estimated from Google Maps linework. | |
| Seattle,
                WA King Co. United States | Sunnyside Ave. N / N 42nd St. (47.65794, -122.33020) | Traffic Calming Circle Existing | Unknown Unknown | 0 Approaches 0 Driveways 16.8934 | Other (At-Grade) Unknown | ICD estimated from Google Maps linework. | |
| Seattle,
                WA King Co. United States | 2nd Ave. NE / NE 43rd St. (47.65896, -122.32730) | Traffic Calming Circle Existing | Unknown Unknown | 0 Approaches 0 Driveways 70.7899 | Other (At-Grade) Unknown | ICD estimated from Google Maps linework. | |
| Mount Vernon,
                WA Skagit Co. United States | SR 538 (E College Way) / SR 9 (48.43002, -122.26460) | Roundabout Existing | Unknown Unknown | 3 Approaches 1 Driveways 38.0389 | Other (At-Grade) Single-Lane | 2007 | Opened July 2007. Rural. Fatal crash December 22, 2011. 11861-05. ICD estimated from Google Maps linework. | 
| North Bend,
                WA King Co. United States | SR 202 / I-90 EB Ramps (47.48782, -121.79730) | Roundabout Existing | All-Way Yield Unknown | 3 Approaches 0 Driveways 41.9673 | Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified) | 2007 | Opened November 2007. ICD estimated from Google Maps linework. | 
| Olympia,
                WA Thurston Co. United States | Evergreen Pkwy. NW / McCann Plaza (47.06936, -122.97440) | Roundabout Existing | Unknown Unknown | 3 Approaches 0 Driveways 42.3006 | Other (At-Grade) Single-Lane | 2005 | Entrance to college. Opened November 2005. ICD estimated from Google Maps linework. | 
| Olympia,
                WA Thurston Co. United States | 14th Ave. SE / E Bay Dr. / Henderson Blvd. SE (47.02971, -122.89140) | Roundabout Existing | Unknown Unknown | 4 Approaches 0 Driveways 33.3772 | Other (At-Grade) Single-Lane | 2005 | Opened July 2005. Southbound right turn bypass lane. ICD estimated from Google Maps linework. | 
| Sammamish,
                WA King Co. United States | Issaquah Pine Lake Rd. / SE 32nd Way (47.57894, -122.02810) | Roundabout Existing | Unknown Unknown | 3 Approaches 0 Driveways 33.8378 | Other (At-Grade) Single-Lane | 2005 | Opened March 2005. ICD estimated from Google Maps linework. | 
| Sequim,
                WA Clallam Co. United States | N Sequim Ave. / Old Olympic Hwy. (48.09418, -123.10230) | Roundabout Existing | Unknown Unknown | 4 Approaches 0 Driveways 25.5265 | Other (At-Grade) Single-Lane | 2005 | Opened September 2005. ICD estimated from Google Maps linework. | 
| Sequim,
                WA Clallam Co. United States | W Washington St. / River Rd. (48.07758, -123.13480) | Roundabout Existing | Unknown Unknown | 4 Approaches 0 Driveways 31.9184 | Other (At-Grade) Single-Lane | 2004 | Opened June 2004. Northbound right turn bypass lane. ICD estimated from Google Maps linework. | 
| Spokane,
                WA Spokane Co. United States | E. Sharp Ave. / N. Columbus St. (47.66950, -117.39490) | Roundabout Existing | Unknown Unknown | 4 Approaches 0 Driveways 22.5195 | Other (At-Grade) Single-Lane | 1992 | September 1992. ICD estimated from Google Maps linework. | 
| 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. | 
| 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. | 
| Vancouver,
                WA Clark Co. United States | W. 6th St. / Esther St. (45.62572, -122.67610) | Roundabout Existing | Unknown Unknown | 4 Approaches 0 Driveways 29.2336 | Other (At-Grade) Single-Lane | 2005 | Opened June 2005. ICD estimated from Google Maps linework. | 
| Vancouver,
                WA Clark Co. United States | NE 137th Ave. / NE 49th St. (45.65733, -122.53190) | Roundabout Existing | Unknown Unknown | 4 Approaches 0 Driveways 40.0691 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2008 | Opened January 2008. ICD estimated from Google Maps linework. | 
| West Richland,
                WA Benton Co. United States | Bombing Range Rd. / Keene Rd. (46.26271, -119.34237) | Roundabout Existing | All-Way Yield Unknown | 4 Approaches 0 Driveways 45.7200 | Other (At-Grade) Single-Lane | 2005 | Free-flow bypass lane on east leg. Opened October 2005. Plans underway to replace with signalized intersection: https://www.tricitiesbusinessnews.com/2021/12/wr-traffic-circle/ | 
| 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. | 
| White Center,
                WA King Co. United States | 9th Ave. SW / SW 100th St. (47.51379, -122.34640) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 14.5200 | Other (At-Grade) Single-lane w/ Traversable Central Island | 2006 | Opened April 2006. Previously controlled by two-way stop Functional Class: Neighborhood Collector ICD estimated from Google Maps linework. | 
| Woodinville,
                WA King Co. United States | 136th Ave. NE / Woodinville High School Entrance (47.77161, -122.15860) | Roundabout Existing | Unknown Unknown | 3 Approaches 0 Driveways 25.6862 | Other (At-Grade) Single-Lane | 2003 | Opened October 2003. ICD estimated from Google Maps linework. | 
| University Place,
                WA Pierce Co. United States | 64th St W / Park Entrance (47.19891, -122.56530) | Roundabout Existing | Unknown Unknown | 4 Approaches 0 Driveways 28.4022 | Other (At-Grade) Single-Lane | 2004 | Completed before July 2004. ICD estimated from Google Maps linework. | 
| University Place,
                WA Pierce Co. United States | Cirque Dr. W / Alameda Ave. W / 56th St. W (47.20639, -122.51600) | Roundabout Existing | Unknown Unknown | 4 Approaches 0 Driveways 54.3624 | Other (At-Grade) Single-Lane | 2002 | Completed December 2002. ICD estimated from Google Maps linework. | 
| University Place,
                WA Pierce Co. United States | 40th St. W / Drexler Dr. W (47.22084, -122.53430) | Roundabout Existing | Unknown Unknown | 3 Approaches 0 Driveways 31.6351 | Other (At-Grade) Single-Lane | 2006 | Completed June 2006. ICD estimated from Google Maps linework. | 
| Lacey,
                WA Thurston Co. United States | Vashon Dr. NE / Columbia Way NE (47.09724, -122.77000) | Roundabout Existing | Unknown Unknown | 4 Approaches 0 Driveways 26.0175 | Other (At-Grade) Single-Lane | 2005 | Opened December 2005. ICD estimated from Google Maps linework. | 
| Lacey,
                WA Thurston Co. United States | Britton Pkwy. NE / Gateway Blvd. (47.06858, -122.78590) | Roundabout Existing | All-Way Yield Unknown | 4 Approaches 0 Driveways 42.3012 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2007 | Opened September 2007. ICD estimated from Google Maps linework. | 
| Kennewick,
                WA Benton Co. United States | SR 240 / US 395 SB Ramps (46.21697, -119.13980) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 47.9307 | Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified) | 2009 | June 2009. ICD estimated from Google Maps linework. | 
| Kennewick,
                WA Benton Co. United States | SR 240 / US 395 NB Ramps / Columbia Dr. (46.21688, -119.13680) | Roundabout Existing | All-Way Yield None | 3 Approaches 0 Driveways 28.0973 | Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified) | 2009 | June 2009. ICD estimated from Google Maps linework. | 
| Kennewick,
                WA Benton Co. United States | Hildebrand Blvd. / Zintel Way (46.17690, -119.18380) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 43.8307 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2009 | Off US 395 to serve frontage road for development. Functional Class: Collector ICD estimated from Google Maps linework. | 
| Richland,
                WA Benton Co. United States | Clearwater Blvd. / Leslie Rd. / Badger Rd. (46.19620, -119.26590) | Roundabout Existing | All-Way Yield At-grade Rail Crossing Signals/Gates (controlling approach only) | 4 Approaches 0 Driveways 54.8640 | Other (At-Grade) Multilane (2 Lane, unspecified) | 2009 | Railroad tracks approximately 160 feet from roundabout entry on west leg (Leslie Road). Opened August 2009. | 
| Kennewick,
                WA Benton Co. United States | Ridgeline Dr. / Southridge Blvd. (46.17550, -119.19750) | Roundabout Existing | All-Way Yield None | 4 Approaches 0 Driveways 36.3887 | Other (At-Grade) Single-Lane | 2013 | Functional Class: Collector ICD estimated from Google Maps linework. |