|
City,
State County Country |
Intersection (Lat, Lng) |
Type Status |
Control Type / Other Control Type | Approaches / Driveways / ICD (m) |
Functional Class / LaneType |
Year Completed | Comments |
|---|---|---|---|---|---|---|---|
|
Pleasanton,
CA Alameda Co. United States |
Pleasanton Ave. / (park access #2) (37.65350, -121.88784) |
Roundabout Existing |
All-Way Yield None |
3 Approaches 0 Driveways 33.5280 |
Other (At-Grade) Single-Lane |
2008 | Painted splitter island on north leg. |
|
Pleasanton,
CA Alameda Co. United States |
Pleasanton Ave. / (park access #1) (37.65266, -121.88980) |
Roundabout Existing |
All-Way Yield None |
3 Approaches 0 Driveways 33.5280 |
Other (At-Grade) Single-Lane |
2008 | |
|
Pleasanton,
CA Alameda Co. United States |
Valley Ave. / Pleasanton Ave. / Laguna Creek Ln. (37.65175, -121.89043) |
Roundabout Existing |
All-Way Yield None |
4 Approaches 0 Driveways 33.5280 |
Other (At-Grade) Single-Lane |
2000 | |
|
Pleasanton,
CA Alameda Co. United States |
Mill Creek Pl. / Oak Vista Way (37.65794, -121.89347) |
Traffic Calming Circle Existing |
Uncontrolled None |
3 Approaches 1 Driveways 16.0738 |
Other (At-Grade) Single-Lane |
2000 | Year Completed estimated (1993-2002). ICD estimated from Google Maps linework. |
|
Pleasanton,
CA Alameda Co. United States |
Valley Ave. / Oak Vista Way (37.65349, -121.89390) |
Roundabout Existing |
All-Way Yield None |
3 Approaches 0 Driveways 27.4216 |
Other (At-Grade) Single-Lane |
2000 | ICD estimated from Google Maps linework. |
|
Pleasanton,
CA Alameda Co. United States |
Valley Ave. / E Gate Way (37.65487, -121.89530) |
Roundabout Existing |
All-Way Yield None |
4 Approaches 0 Driveways 28.3667 |
Other (At-Grade) Single-Lane |
2000 | ICD estimated from Google Maps linework. |
|
Pleasanton,
CA Alameda Co. United States |
Valley Ave. / (unknown) (37.65670, -121.89670) |
Roundabout Existing |
All-Way Yield None |
3 Approaches 1 Driveways 28.3660 |
Other (At-Grade) Single-Lane |
2000 | ICD estimated from Google Maps linework. |
|
Aptos,
CA Santa Cruz Co. United States |
Aptos Beach Dr. / Esplanade / Beach Dr. / Rio Del Mar Blvd. / Venetian Rd. (36.96915, -121.90525) |
Roundabout Existing |
All-Way Yield None |
5 Approaches 0 Driveways 20.9928 |
Other (At-Grade) Single-Lane |
2015 | date: https://localwiki.org/santacruz/Roundabout ICD estimated from Google Maps linework. |
|
Pleasanton,
CA Alameda Co. United States |
Watermill Rd. / Albion Rd. (37.76511, -121.90780) |
Other Existing |
Unknown Unknown |
3 Approaches 0 Driveways 34.9336 |
Other (At-Grade) Single-Lane |
ICD estimated from Google Maps linework. | |
|
Pleasanton,
CA Alameda Co. United States |
Watermill Rd. / Harcourt Way (37.75982, -121.90820) |
Other Existing |
Unknown Unknown |
3 Approaches 0 Driveways 34.9361 |
Other (At-Grade) Single-Lane |
ICD estimated from Google Maps linework. | |
|
Pleasanton,
CA Alameda Co. United States |
Watermill Rd. / Watermill Rd. (37.75548, -121.90970) |
Other Existing |
Unknown Unknown |
2 Approaches 0 Driveways 31.1610 |
Other (At-Grade) Single-Lane |
ICD estimated from Google Maps linework. | |
|
San Ramon,
CA Contra Costa Co. United States |
S Monarch Rd. / Ivy Leaf Springs Rd. / Alpine Blue Dr. (37.76185, -121.91048) |
Roundabout Existing |
All-Way Yield None |
3 Approaches 0 Driveways 23.6048 |
Other (At-Grade) Single-Lane |
2006 | Opened with 2 approaches, third one added 2014-2015. ICD estimated from Google Maps linework. |
|
San Ramon,
CA Contra Costa Co. United States |
Monarch Rd. / Main Branch Rd. (37.76644, -121.91149) |
Roundabout Existing |
All-Way Yield None |
4 Approaches 0 Driveways 26.4357 |
Other (At-Grade) Single-Lane |
2006 | ICD estimated from Google Maps linework. |
|
Monterey,
CA Monterey Co. United States |
SR 68 / SR 1 SB Off-Ramp / 17 Mile Dr. (36.57529, -121.91281) |
Roundabout Existing |
All-Way Yield None |
4 Approaches 0 Driveways 42.6720 |
Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified) |
2017 | |
|
Monterey,
CA Monterey Co. United States |
17 Mile Dr. / SR 1 SB On-Ramp (36.57448, -121.91295) |
Roundabout Existing |
All-Way Yield None |
2 Approaches 0 Driveways 28.9560 |
Freeway Ramps (Grade-Separated) Single-Lane |
2017 | Raindrop shape. Right-turn-only lane on west leg. |
|
Shasta Hanchett Park,
CA Santa Clara Co. United States |
Martin Ave. / Sequoia Ave. (37.33046, -121.91387) |
Other Existing |
Unknown Unknown |
4 Approaches 0 Driveways 0.0000 |
Other (At-Grade) Single-Lane |
||
|
Shasta Hanchett Park,
CA Santa Clara Co. United States |
Tillman Ave. / Yosemite Ave. (37.32791, -121.91395) |
Traffic Calming Circle Existing |
One-Way/Two-Way Stop Unknown |
4 Approaches 0 Driveways 0.0000 |
Other (At-Grade) Single-Lane |
||
|
Shasta Hanchett Park,
CA Santa Clara Co. United States |
Tillman Ave. / Sierra Ave. (37.32858, -121.91476) |
Traffic Calming Circle Existing |
One-Way/Two-Way Stop Unknown |
4 Approaches 0 Driveways 0.0000 |
Other (At-Grade) Single-Lane |
||
|
Shasta Hanchett Park,
CA Santa Clara Co. United States |
Martin Ave. / Tillman Ave. (37.32929, -121.91560) |
Other Existing |
Unknown Unknown |
4 Approaches 0 Driveways 0.0000 |
Other (At-Grade) Single-Lane |
||
|
Shasta Hanchett Park,
CA Santa Clara Co. United States |
Tillman Ave. / Hanchett Ave. (37.32998, -121.91643) |
Traffic Calming Circle Existing |
One-Way/Two-Way Stop Unknown |
4 Approaches 0 Driveways 0.0000 |
Other (At-Grade) Single-Lane |
||
|
Chilliwack,
BC Fraser Valley Canada |
Prairie Central Rd. / Prest Rd. (49.14742, -121.91835) |
Roundabout Existing |
All-Way Yield None |
4 Approaches 0 Driveways 42.9676 |
Other (At-Grade) Single-Lane |
2016 | Year Completed estimated (2015-2016). ICD estimated from Google Maps linework. |
|
Chilliwack,
BC Fraser Valley Canada |
Bailey Rd. / Prest Rd. / Teskey Way (49.11848, -121.91844) |
Roundabout Existing |
All-Way Yield None |
4 Approaches 0 Driveways 39.0842 |
Other (At-Grade) Single-Lane |
2016 | Year Completed estimated (2015-2016). ICD estimated from Google Maps linework. |
|
San Ramon,
CA Contra Costa Co. United States |
Stoneleaf Rd. / W Branch Rd. (37.76337, -121.91875) |
Roundabout Existing |
All-Way Yield None |
3 Approaches 0 Driveways 30.4800 |
Other (At-Grade) Single-Lane |
2011 | |
|
Vacaville,
CA Solano Co. United States |
Carroll Way / Primrose Dr. (38.34930, -121.92726) |
Roundabout Existing |
All-Way Yield None |
3 Approaches 0 Driveways 41.1480 |
Other (At-Grade) Single-Lane |
2019 | Year Completed estimated (2019-2020). |
|
Santa Clara,
CA Santa Clara Co. United States |
(shopping center entrance) / (parking) (37.35667, -121.93755) |
Roundabout Existing |
All-Way Yield None |
4 Approaches 0 Driveways 18.2880 |
Other (At-Grade) Single-lane w/ Traversable Central Island |
2022 | https://www.svvoice.com/coleman-costco-installing-roundabout/ |
|
Vacaville,
CA Solano Co. United States |
Vanden Rd. / Leisure Town Rd. (38.31717, -121.94312) |
Roundabout Existing |
All-Way Yield None |
3 Approaches 0 Driveways 45.7200 |
Other (At-Grade) Single-Lane |
2017 | Added lane right-turn bypass lanes on west and south legs. |
|
Vacaville,
CA Solano Co. United States |
Foxboro Pkwy. / Vanden Rd. / Rich Cir. (38.31708, -121.94625) |
Roundabout Existing |
All-Way Yield None |
4 Approaches 0 Driveways 50.2920 |
Other (At-Grade) Single-Lane |
2019 | |
|
Santa Clara,
CA Santa Clara Co. United States |
Rivermark Plaza / Moreland Way (37.39525, -121.94684) |
Other Existing |
All-Way Yield None |
4 Approaches 0 Driveways 0.0000 |
Other (At-Grade) Single-Lane |
No splitter islands. | |
|
Fairfield,
CA Solano Co. United States |
Skymaster Circle (38.26961, -121.94804) |
Other Existing |
One-Way/Two-Way Stop Unknown |
4 Approaches 0 Driveways 0.0000 |
Other (At-Grade) Single-Lane |
At Travis Air Force Base. WWII bomber located in central island. | |
|
Santa Clara,
CA Santa Clara Co. United States |
Cypress Ave. / Cecil Ave. (37.32430, -121.95985) |
Traffic Calming Circle Existing |
All-Way Yield Unknown |
4 Approaches 0 Driveways 30.3920 |
Other (At-Grade) Single-Lane |
2011 | ICD estimated from Google Maps linework. |
|
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. |
|
Chilliwack,
BC Fraser Valley Canada |
Vedder Rd. / Chilliwack Lake Rd. (49.09791, -121.96384) |
Roundabout Existing |
All-Way Yield None |
3 Approaches 0 Driveways 32.8444 |
Other (At-Grade) Single-Lane |
2017 | https://www.reminetwork.com/articles/unique-vedder-bridge-launch/ ICD estimated from Google Maps linework. |
|
Madison,
CA Yolo Co. United States |
SR 16 / CR 89 (38.68204, -121.96678) |
Roundabout Existing |
All-Way Yield None |
4 Approaches 0 Driveways |
Other (At-Grade) Single-Lane |
2019 | |
|
Winters,
CA Yolo Co. United States |
SR 128 (E Grant Ave.) / Walnut Ln. / (parking lot) (38.52629, -121.96733) |
Roundabout Existing |
All-Way Yield None |
4 Approaches 0 Driveways 29.8992 |
Other (At-Grade) Single-Lane |
2018 | Year Completed estimated (2017-2018). ICD estimated from Google Maps linework. |
|
Monroe,
WA Snohomish Co. United States |
Chain Lake Rd. / N Kelsey St. (47.86475, -121.96958) |
Roundabout Existing |
All-Way Yield Unknown |
3 Approaches 0 Driveways 29.6464 |
Other (At-Grade) Single-Lane |
2014 | Bing "On the Street" view shows it under construction ICD estimated from Google Maps linework. |
|
Chilliwack,
BC Fraser Valley Canada |
Vedder Mountain Rd. / Cultus Lake Rd. (49.09493, -121.97242) |
Roundabout Existing |
All-Way Yield None |
3 Approaches 0 Driveways 43.0131 |
Other (At-Grade) Single-Lane |
2018 | http://fraservalleynewsnetwork.com/2018/10/04/update-the-roundabout-to-cultus-lake-on-schedule-for-november-completion/ ICD estimated from Google Maps linework. |
|
Chilliwack,
BC Fraser Valley Canada |
Columbia Valley Rd. / Sunnyside Blvd. / (parking) (49.07529, -121.97639) |
Roundabout Existing |
All-Way Yield None |
4 Approaches 0 Driveways 37.0000 |
Other (At-Grade) Single-Lane |
2010 | Year Completed estimated (2009-2011). |
|
Chilliwack,
BC Fraser Valley Canada |
Tyson Rd. / Watson Rd. (49.11111, -121.97651) |
Roundabout Existing |
All-Way Yield Unknown |
4 Approaches 0 Driveways 39.8718 |
Other (At-Grade) Single-Lane |
2014 | ICD estimated from Google Maps linework. |
|
Chilliwack,
BC Fraser Valley Canada |
Keith Wilson Rd. / Tyson Rd. (49.10375, -121.97668) |
Roundabout Existing |
All-Way Yield None |
4 Approaches 0 Driveways 38.0000 |
Other (At-Grade) Single-Lane |
2014 | |
|
Chilliwack,
BC Fraser Valley Canada |
Evans Rd. / Evans Pkwy. / Yale Rd. W (49.14521, -121.97764) |
Roundabout Existing |
All-Way Yield Unknown |
4 Approaches 0 Driveways 53.9072 |
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. / 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. |
|
Duvall,
WA King Co. United States |
NE Big Rock Rd. / 3rd Ave. NE (47.72685, -121.98193) |
Roundabout Existing |
All-Way Yield Unknown |
4 Approaches 0 Driveways 34.1373 |
Other (At-Grade) Single-Lane |
2019 | |
|
Monroe,
WA Snohomish Co. United States |
SR 203 / 203rd Ave. SE / High Rock Rd. (47.81183, -121.98257) |
Roundabout Existing |
All-Way Yield None |
4 Approaches 0 Driveways 0.0000 |
Other (At-Grade) Single-lane w/ Traversable Central Island |
2024 | Exclamation point shaped. https://www.reddit.com/r/SnohomishCounty/comments/1dqvzuu/new_sr_203_roundabout_brings_improved_safety/?rdt=38404 |
|
Duvall,
WA King Co. United States |
SR 203 (Carnation-Duvall Rd.) / 124th St. / Novelty Hill (47.70910, -121.98440) |
Roundabout Existing |
All-Way Yield None |
4 Approaches 0 Driveways 40.9865 |
Other (At-Grade) Multilane (2 Lane, unspecified) |
2004 | http://www.wsdot.wa.gov/projects/sr203/NE124thNoveltyRd/ Functional Class: Arterial ICD estimated from Google Maps linework. |
|
Sundale,
CA Alameda Co. United States |
Walnut Ave. / Argonaut Way / Parkhurst Dr. (37.54260, -121.98521) |
Roundabout Existing |
All-Way Yield None |
3 Approaches 1 Driveways 33.5277 |
Other (At-Grade) Single-Lane |
2015 | Raised crosswalks. Year Completed estimated (2014-2015). |
|
Suisun City,
CA Solano Co. United States |
Charleston St. / Gunter Dr. (38.26212, -121.98570) |
Roundabout Existing |
All-Way Yield None |
3 Approaches 0 Driveways 48.7680 |
Other (At-Grade) Single-Lane |
2004 | |
|
Suisun City,
CA Solano Co. United States |
Charleston St. / McClellan Dr. (38.25614, -121.98578) |
Roundabout Existing |
All-Way Yield None |
3 Approaches 0 Driveways 48.7680 |
Other (At-Grade) Single-Lane |
2002 | Year Completed estimated (1993-2003). |
|
Duvall,
WA King Co. United States |
Railroad Way NE / NE 143rd Pl. (47.72994, -121.98822) |
Other Existing |
All-Way Yield Unknown |
3 Approaches 1 Driveways 32.3085 |
Other (At-Grade) Single-Lane |
2020 | Yield at entry, but no splitter islands. |
|
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. |
|
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. |
|
Concord,
CA Contra Costa Co. United States |
Landana Dr. / Mulberry Dr. (37.97886, -121.99430) |
Traffic Calming Circle Existing |
All-Way Yield None |
3 Approaches 0 Driveways 16.0041 |
Other (At-Grade) Single-Lane |
ICD estimated from Google Maps linework. | |
|
Sammamish,
WA King Co. United States |
SE Issaquah-Beaver Lake Rd. / 256th Ave. SE / E Beaver Lake Dr. SE (47.57849, -121.99831) |
Roundabout Existing |
All-Way Yield None |
4 Approaches 0 Driveways 32.0040 |
Other (At-Grade) Single-Lane |
2019 | Year Completed estimated (2019-2020). |
|
Sammamish,
WA King Co. United States |
SE Issaquah-Fall City Rd. / Klahanie Dr. SE / 252nd Ave. SE (47.56365, -122.00398) |
Roundabout Existing |
All-Way Yield None |
4 Approaches 0 Driveways 0.0000 |
Other (At-Grade) Multilane (2 Lane, unspecified) |
2021 | https://connect.sammamish.us/ifcr-project-look-ahead?category=11%2F5%2F19&tool=news_feed |
|
Enumclaw,
WA King Co. United States |
Semanski St. / Warner Ave. (47.19201, -122.00551) |
Roundabout Existing |
All-Way Yield None |
4 Approaches 0 Driveways 28.9560 |
Other (At-Grade) Single-Lane |
2021 | Next to Enumclaw High School. https://www.courierherald.com/news/council-awards-bid-for-roundabout-in-front-of-enumclaw-high/ |
|
Monroe,
WA Snohomish Co. United States |
SR 522 EB Ramps / 164th St. SE / Tester Rd. (47.84863, -122.00580) |
Roundabout Existing |
All-Way Yield None |
5 Approaches 0 Driveways 60.9143 |
Other (At-Grade) Multilane (2 Lane, unspecified) |
2001 | Completed August 2001. This project won the Washington State APWA 2001 Project of the Award and the ASCE Seattle Section 2001 Outstanding Project Award. The Project is documented in the Compendium of Papers for 2000 ITE District 6 Annual Meeting, San Diego, CA. Reconfiguration of two intersections into a roundabout. Previously controlled by two-way stop ICD estimated from Google Maps linework. |
|
Chilliwack,
BC Fraser Valley Canada |
Lickman Rd. / Yale Rd. / Luckakuck Way (49.14204, -122.00694) |
Roundabout Existing |
All-Way Yield None |
4 Approaches 0 Driveways 44.5348 |
Other (At-Grade) Single-Lane |
2019 | Planned to be changed to two-lane roundabout. https://www.theprogress.com/news/traffic-changes-now-in-effect-at-lickman-road-interchange/ ICD estimated from Google Maps linework. |
|
Walnut Creek,
CA Alameda Co. United States |
Walnut Ave. / Oak Grove Rd. (37.91432, -122.00770) |
Roundabout Existing |
All-Way Yield None |
3 Approaches 0 Driveways 22.6138 |
Other (At-Grade) Single-Lane |
2000 | Right turn bypass lane in northwest quadrant. 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. |
|
Sammamish,
WA King Co. United States |
SE Issaquah Fall City Rd. / 247th Pl. SE (47.56108, -122.00948) |
Roundabout Existing |
All-Way Yield None |
4 Approaches 0 Driveways 0.0000 |
Other (At-Grade) Multilane (2 Lane, unspecified) |
2021 | https://connect.sammamish.us/ifcr-project-look-ahead?category=11%2F5%2F19&tool=news_feed |
|
Granite Falls,
WA Snohomish Co. United States |
84th St. NE / 163rd Ave. NE (48.07206, -122.01269) |
Roundabout Existing |
All-Way Yield Unknown |
4 Approaches 0 Driveways 0.0000 |
Other (At-Grade) Single-Lane |
2024 | https://www.facebook.com/SnoCoPW/videos/final-touches-are-taking-place-at-the-84th-st-ne-and-163rd-ave-ne-roundabout-in-/2124130604683380/ |
|
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. |
|
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. |
|
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 | |
|
Sammamish,
WA King Co. United States |
Issaquah-Fall City Rd. / 242nd Ave. SE (47.55712, -122.01726) |
Roundabout Existing |
All-Way Yield None |
4 Approaches 0 Driveways 0.0000 |
Other (At-Grade) Multilane (2 Lane, unspecified) |
2021 | https://connect.sammamish.us/ifcr-project-look-ahead?category=11%2F5%2F19&tool=news_feed |
|
Hayward Highland,
CA Alameda Co. United States |
Fairview Ave. / Hayward Blvd. / Stonebrae Country Club Dr. (37.65432, -122.01743) |
Roundabout Existing |
All-Way Yield None |
3 Approaches 0 Driveways 38.7681 |
Other (At-Grade) Single-Lane |
2006 | ICD estimated from Google Maps linework. |
|
Cupertino,
CA Santa Clara Co. United States |
Portal Ave. / Wheaton Dr. (37.32445, -122.01964) |
Traffic Calming Circle Existing |
All-Way Stop None |
4 Approaches 0 Driveways 0.0000 |
Other (At-Grade) Single-Lane |
2001 | Year Completed estimated (2000-2002). |
|
Maple Valley,
WA King Co. United States |
SE Tahoma Way / Maple Valley Black Diamond Rd. SE (47.35796, -122.02252) |
Roundabout Existing |
All-Way Yield None |
4 Approaches 0 Driveways 27.5079 |
Other (At-Grade) Single-Lane |
2018 | East Entrance to Tahoma High School. Year Completed estimated (2018-2019). ICD estimated from Google Maps linework. |
|
Santa Cruz,
CA Santa Cruz Co. United States |
Pacific Ave. / Beach St. (36.96282, -122.02388) |
Roundabout Existing |
All-Way Yield At-grade Rail Crossing Signals/Gates (controlling all approaches) |
4 Approaches 0 Driveways 41.1480 |
Other (At-Grade) Multilane (2 Lane, unspecified) |
2015 | Railroad tracks cut through part of circle. Separated two-way bicycle lane/cycle track along south side of intersection. |
|
Santa Cruz,
CA Santa Cruz Co. United States |
Pacific Ave. / Center St. / W. Cliff Dr. (36.96490, -122.02620) |
Roundabout Existing |
All-Way Yield None |
4 Approaches 0 Driveways 32.4453 |
Other (At-Grade) Single-Lane |
2011 | ICD estimated from Google Maps linework. |
|
Redmond,
WA King Co. United States |
Trilogy Pkwy NE / NE Greens Crossing Rd. (47.70752, -122.02660) |
Roundabout Existing |
All-Way Yield None |
4 Approaches 0 Driveways 25.7178 |
Other (At-Grade) Single-Lane |
2004 | Adjacent to golf course and semi-retired community. Completed June 2004. 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. |
|
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. |
|
Black Diamond,
WA King Co. United States |
SE Auburn Black Diamond Rd. / Roberts Dr. / Lake Sawyer Rd. SE (47.31151, -122.02996) |
Roundabout Existing |
All-Way Yield Unknown |
4 Approaches 0 Driveways 33.2005 |
Other (At-Grade) Single-Lane |
2017 | ICD estimated from Google Maps linework. |
|
Fairview,
CA Alameda Co. United States |
Fairview Ave. / Five Canyons Pkwy. / East Ave. (Star Ridge Rd.) (37.67520, -122.03220) |
Roundabout Existing |
All-Way Yield None |
4 Approaches 0 Driveways 20.7965 |
Other (At-Grade) Single-Lane |
1998 | https://www.sfgate.com/bayarea/article/COMMUTER-CHRONICLES-IN-A-ROUNDABOUT-WAY-The-2975842.php ICD estimated from Google Maps linework. |
|
Redmond,
WA King Co. United States |
Redmond Ridge Dr. NE / NE Cedar Park Crest (47.68578, -122.03278) |
Roundabout Existing |
All-Way Yield None |
4 Approaches 0 Driveways 38.1000 |
Other (At-Grade) Single-Lane |
2011 | Year Completed estimated (2011-2012). |
|
Alamo,
CA Contra Costa Co. United States |
Danville Blvd. / Orchard Ct. (37.85201, -122.03374) |
Roundabout Existing |
All-Way Yield None |
4 Approaches 0 Driveways 30.4800 |
Other (At-Grade) Single-Lane |
2024 | https://www.contracosta.ca.gov/8130/Danville-BlvdOrchard-Ct-Project-Alamo-Ro |
|
Black Diamond,
WA King Co. United States |
SE Auburn Black Diamond Rd. / Ten Trails Pkwy. SE (47.31106, -122.03510) |
Roundabout Existing |
All-Way Yield None |
4 Approaches 0 Driveways 41.4528 |
Other (At-Grade) Single-Lane |
2019 | North leg added 2021-2022. |
|
(unincorporated),
WA King Co. United States |
Redmond Ridge Dr. / NE Alder Crest Dr. (47.69211, -122.03572) |
Roundabout Unknown |
All-Way Yield None |
4 Approaches 0 Driveways 0.0000 |
Other (At-Grade) Single-Lane |
2024 | https://kingcounty.gov/en/dept/local-services/transit-transportation-roads/roads-and-bridges/projects-and-programs/redmond-ridge-dr-ne-roundabout (open to traffic, but final paving delayed by weather until Spring 2024) |
|
Maple Valley,
WA King Co. United States |
SE 240th Blvd. / 228th Ave. SE (47.38734, -122.03723) |
Roundabout Existing |
All-Way Yield None |
4 Approaches 0 Driveways 33.5280 |
Other (At-Grade) Single-Lane |
2018 | Southwest leg stubbed. Year Completed estimated (2017-2018). |
|
Maple Valley,
WA King Co. United States |
228th Ave. SE / SE 275th Pl. / SE Bear Blvd. (47.35485, -122.03766) |
Roundabout Existing |
All-Way Yield None |
4 Approaches 0 Driveways 27.4320 |
Other (At-Grade) Single-Lane |
2017 | Year Completed estimated (2016-2017). |
|
Sammamish,
WA King Co. United States |
SE 4th St. / 224th Pl. SE (47.60552, -122.03916) |
Roundabout Existing |
All-Way Yield None |
4 Approaches 0 Driveways 26.2128 |
Other (At-Grade) Single-Lane |
2020 | |
|
Sammamish,
WA King Co. United States |
SE 4th St. / 224th Ave. SE (47.60553, -122.04091) |
Roundabout Existing |
All-Way Yield None |
4 Approaches 0 Driveways 25.6032 |
Other (At-Grade) Single-Lane |
2020 | |
|
Issaquah,
WA King Co. United States |
SE 62nd St. / 221st Pl. SE / 4th Ave. NW (47.54682, -122.04277) |
Roundabout Existing |
All-Way Yield None |
4 Approaches 0 Driveways 28.2155 |
Other (At-Grade) Single-Lane |
2019 | https://www.youtube.com/watch?v=FGdBuaAZqVU. https://www.issaquahwa.gov/62. ICD estimated from Google Maps linework. |
|
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. |
|
Sammamish,
WA King Co. United States |
SE 4th St. / 222nd Pl. SE (47.60554, -122.04307) |
Roundabout Existing |
All-Way Yield None |
4 Approaches 0 Driveways 19.8120 |
Other (At-Grade) Single-lane w/ Traversable Central Island |
2020 | |
|
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. |
|
Maple Valley,
WA King Co. United States |
Witte Rd. SE / SE 254th Pl. (47.37383, -122.04867) |
Roundabout Existing |
All-Way Yield None |
4 Approaches 0 Driveways 36.5760 |
Other (At-Grade) Single-Lane |
2024 | https://www.maplevalleywa.gov/departments-services/public-works/capital-improvement-projects/current-transportation-improvement-projects/t-28b-ph-3-south-witte-road-se-roundabout-improvements |
|
Sammamish,
WA King Co. United States |
SE 4th St. / 218th Ave. SE (47.60555, -122.04899) |
Roundabout Existing |
All-Way Yield Unknown |
3 Approaches 0 Driveways 21.9453 |
Other (At-Grade) Single-lane w/ Traversable Central Island |
2020 | |
|
Issaquah,
WA King Co. United States |
SE 62nd St. / Lake Dr. / Pickering Pl. (47.54599, -122.04930) |
Roundabout Existing |
All-Way Yield None |
3 Approaches 0 Driveways 22.5728 |
Other (At-Grade) Single-Lane |
2019 | https://www.youtube.com/watch?v=FGdBuaAZqVU. https://www.issaquahwa.gov/62. ICD estimated from Google Maps linework. |
|
Issaquah,
WA King Co. United States |
Maple St. NW / (parking lots) (47.54340, -122.05121) |
Roundabout Existing |
All-Way Yield None |
4 Approaches 0 Driveways 20.9614 |
Other (At-Grade) Single-lane w/ Traversable Central Island |
2017 | ICD estimated from Google Maps linework. |
|
Sammamish,
WA King Co. United States |
NE Inglewood Hill / 216th Ave. NE (47.61554, -122.05180) |
Roundabout Existing |
All-Way Yield None |
4 Approaches 0 Driveways 31.3989 |
Other (At-Grade) Single-Lane |
2001 | October 2001. 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. |
|
Issaquah,
WA King Co. United States |
19th Ave. NW / NW Gilman Blvd. (47.54571, -122.06644) |
Other Existing |
All-Way Yield None |
3 Approaches 0 Driveways 21.7667 |
Other (At-Grade) Single-Lane |
19th Ave legs have painted splitter islands. Completed 2008 or earlier (streetview). ICD estimated from Google Maps linework. | |
|
Pleasant Hill,
CA Contra Costa Co. United States |
Old Quarry Rd. / Camelback Rd. (37.97273, -122.06894) |
Roundabout Existing |
All-Way Yield None |
3 Approaches 0 Driveways 30.1278 |
Other (At-Grade) Single-Lane |
2017 | Year Completed estimated (2017-2018). https://www.eastbaytimes.com/2017/02/20/pleasant-hill-roundabout-planned-near-diablo-valley-college/ ICD estimated from Google Maps linework. |
|
Issaquah,
WA King Co. United States |
Newport Way NW / NW Pacific Elm Dr. / 200th Ave. SE (47.54989, -122.07416) |
Roundabout Existing |
All-Way Yield Unknown |
4 Approaches 0 Driveways 26.6016 |
Other (At-Grade) Single-Lane |
2018 | ICD estimated from Google Maps linework. |
|
Hayward,
CA Alameda Co. United States |
Orchard Ave. / Joyce St. (37.65808, -122.07850) |
Roundabout Existing |
All-Way Yield None |
4 Approaches 0 Driveways 18.9103 |
Other (At-Grade) Single-Lane |
2000 | Painted splitter islands. Built as temporary in February 2000, reconstructed permanent central island 2001 (http://ci.hayward.ca.us/citygov/meetings/cca/rp/2000/rp091900-05.pdf). ICD estimated from Google Maps linework. |
|
Lake Stevens,
WA Snohomish Co. United States |
SR 92 / 113th Ave. SE (48.03019, -122.07884) |
Roundabout Existing |
All-Way Yield None |
3 Approaches 0 Driveways 35.9412 |
Other (At-Grade) Single-Lane |
2013 | Reverse curves on east and west approaches. Open November 2013. 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. |
|
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. |