Roundabouts Database Index

29411 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
Missoula, MT Missoula Co. United States	Southgate Mall Access Rd. / Mary Ave. (46.84412, -114.02685)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 24.3840	Other (At-Grade) Single-Lane	2018	Year Completed estimated (2016-2019).
Missoula, MT Missoula Co. United States	Mary Ave. / Southgate Mall Access Rd. (46.84420, -114.03158)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 30.4800	Other (At-Grade) Single-Lane	2018	Year Completed estimated (2016-2019).
Kuching, Sarawak Bahagian Kuching Malaysia	Lorong Bunga Kenanga: Jala Tun Abdul Rahman / Jalan Bako / (unknown) (1.57992, 110.35132)	Rotary Existing	All-Way Yield Unknown	4 Approaches 0 Driveways	Other (At-Grade) Multilane (3+ Lane)		Concentric striped circulatory roadway.
Kuching, Sarawak Bahagian Kuching Malaysia	Bulatan D P Abang Haji Abdillah (1.57168, 110.35128)	Rotary Existing	All-Way Yield Unknown	6 Approaches 0 Driveways	Other (At-Grade) Multilane (3+ Lane)
Kuching, Sarawak Bahagian Kuching Malaysia	Jalan Datuk Marican Salleh / Jalan Demak / (unknown) (1.56605, 110.35639)	Rotary Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 150.0000	Other (At-Grade) Multilane (3+ Lane)
Kuching, Sarawak Bahagian Kuching Malaysia	(unknown) / Jalan Stadium (1.58857, 110.35680)	Roundabout Existing	All-Way Yield Unknown	3 Approaches 0 Driveways	Other (At-Grade) Multilane (2 Lane, 2x2 max)
Kuching, Sarawak Bahagian Kuching Malaysia	(unknown) / Julan Stadium (1.58872, 110.35351)	Roundabout Existing	All-Way Yield Unknown	3 Approaches 0 Driveways	Other (At-Grade) Multilane (2 Lane, 2x2 max)		Concentric striped circulatory roadway.
Kuching, Sarawak Bahagian Kuching Malaysia	Bulatan Datuk Temenggong Abang Kipali Bin Abang Akip (1.56887, 110.32092)	Rotary Existing	All-Way Yield Unknown	5 Approaches 0 Driveways 200.0000	Freeway Ramps (Grade-Separated) Multilane (3+ Lane)		Oval shaped. ICD = 200 m x 180 m.
Kuching, Sarawak Bahagian Kuching Malaysia	Jalan Matang / Jalan Matang Baru / (unknown) (1.57234, 110.30408)	Rotary Existing	All-Way Yield Unknown	5 Approaches 0 Driveways 145.0000	Other (At-Grade) Multilane (3+ Lane)
Kuching, Sarawak Bahagian Kuching Malaysia	(unknown) / Lorong 2 (1.55926, 110.29878)	Rotary Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 90.0000	Other (At-Grade) Multilane (2 Lane, 2x2 max)
Kuching, Sarawak Bahagian Kuching Malaysia	Jalan Datuk Temenggong Tan Meng Chong / Lorong Pisang Barat (1.54136, 110.31343)	Rotary Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 90.0000	Other (At-Grade) Multilane (2 Lane, 2x2 max)
Kuching, Sarawak Bahagian Kuching Malaysia	Jalan Stapok (1.52862, 110.32288)	Roundabout Existing	All-Way Yield Unknown	3 Approaches 0 Driveways 20.0000	Other (At-Grade) Single-Lane
Kuching, Sarawak Bahagian Kuching Malaysia	Jalan Lapangan Terbang (1.50399, 110.34811)	Other Existing	All-Way Yield Unknown	5 Approaches 0 Driveways	Freeway Ramps (Grade-Separated) Multilane (3+ Lane)		Vehicular access to central island.
Kuching, Sarawak Bahagian Kuching Malaysia	Jalan Sherip Masahor / Jalan Taman Hui Sing (1.51238, 110.34372)	Rotary Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 110.0000	Other (At-Grade) Multilane (3+ Lane)		Concentric striped circulatory roadway.
Kuching, Sarawak Bahagian Kuching Malaysia	Jalan Datuk Tawi Sli (1.52093, 110.33663)	Rotary Existing	All-Way Yield Unknown	5 Approaches 0 Driveways 200.0000	Freeway Ramps (Grade-Separated) Multilane (3+ Lane)		Oval shaped. ICD = 200 m x 160 m.
Kuching, Sarawak Bahagian Kuching Malaysia	Jalan Tun Razak / Jalan Wan Alwi / Jalan Ridgeway (1.53037, 110.35927)	Rotary Existing	All-Way Yield Unknown	6 Approaches 0 Driveways 230.0000	Freeway Ramps (Grade-Separated) Multilane (3+ Lane)
Kuching, Sarawak Bahagian Kuching Malaysia	Jalan Wan Alwi / Jalan Setia Raja (1.52098, 110.38141)	Rotary Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 130.0000	Other (At-Grade) Multilane (3+ Lane)		Oval shaped. ICD = 130 m x 105 m.
Kuching, Sarawak Bahagian Kuching Malaysia	Jalan Stutong / Jalan Tabuan Laru (1.50515, 110.37383)	Rotary Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 110.0000	Other (At-Grade) Multilane (3+ Lane)
Kota Samarahan, Sarawak Bahagian Samarahan Malaysia	Jalan Datuk Muhammad Musa / Lebuhraya Kuching-Samarahan (1.45870, 110.41921)	Rotary Existing	All-Way Yield Unknown	4 Approaches 1 Driveways 210.0000	Other (At-Grade) Multilane (3+ Lane)
Kota Samarahan, Sarawak Bahagian Samarahan Malaysia	Lebuhraya Kuching-Samarahan / (unknown) (1.47543, 110.41598)	Rotary Existing	All-Way Yield Unknown	3 Approaches 2 Driveways 240.0000	Other (At-Grade) Multilane (3+ Lane)
Kota Samarahan, Sarawak Bahagian Samarahan Malaysia	Lebuhraya Kuching-Samarahan / (unknown) (1.48899, 110.40638)	Rotary Existing	All-Way Yield Unknown	3 Approaches 1 Driveways 240.0000	Other (At-Grade) Multilane (3+ Lane)
Kuching, Sarawak Bahagian Kuching Malaysia	Jalan Kilang / Jalan Jentera / Jalan Daya (1.57086, 110.38610)	Rotary Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 130.0000	Other (At-Grade) Multilane (2 Lane, 2x2 max)
Kuching, Sarawak Bahagian Kuching Malaysia	Jalan Kemajuan /Jalan Keruing / Jalan Tekad (1.56589, 110.39047)	Rotary Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 165.0000	Other (At-Grade) Multilane (2 Lane, 2x2 max)
Kuching, Sarawak Bahagian Kuching Malaysia	Jalan Belian / Jalan Mersawa (1.55877, 110.38910)	Rotary Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 120.0000	Other (At-Grade) Multilane (2 Lane, 2x2 max)		Oval shaped. ICD = 120 m x 105 m.
Kuching, Sarawak Bahagian Kuching Malaysia	Jalan Demak Laut / (unknown) (1.59627, 110.40727)	Rotary Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 95.0000	Other (At-Grade) Multilane (2 Lane, 2x2 max)		Concentric striped circulatory roadway.
Kuching, Sarawak Bahagian Kuching Malaysia	Rte 1002 / (unknown) (1.59920, 110.43140)	Rotary Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 110.0000	Other (At-Grade) Multilane (3+ Lane)
Kuching, Sarawak Bahagian Kuching Malaysia	Jalan Bako (1.59957, 110.44135)	Rotary Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 200.0000	Other (At-Grade) Multilane (2 Lane, 2x2 max)
Kuching, Sarawak Bahagian Kuching Malaysia	Jalan Demak Maju / (unknown) (1.59923, 110.44736)	Rotary Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 130.0000	Other (At-Grade) Multilane (3+ Lane)
Kuching, Sarawak Bahagian Kuching Malaysia	Jalan Sultan Tengah / (unknown) (1.62387, 110.34799)	Rotary Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 245.0000	Other (At-Grade) Multilane (3+ Lane)
Kuching, Sarawak Bahagian Kuching Malaysia	Lorong Cahya Mata / (unknown) (1.64234, 110.33686)	Roundabout Existing	All-Way Yield Unknown	3 Approaches 1 Driveways	Other (At-Grade) Single-Lane
Kuching, Sarawak Bahagian Kuching Malaysia	(unknown) (1.64450, 110.33504)	Roundabout Existing	All-Way Yield Unknown	3 Approaches 0 Driveways	Other (At-Grade) Single-Lane
Kuching, Sarawak Bahagian Kuching Malaysia	(unknown) (1.64720, 110.33526)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways	Other (At-Grade) Single-Lane
Timnath, CO Larimer Co. United States	Club Dr. / Innovate Pl. (40.52134, -104.95463)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 53.3400	Other (At-Grade) Multilane (2 Lane, 2x2 max)	2008	Year Completed estimated (2006-2010).
Timnath, CO Larimer Co. United States	Signal Tree Dr. / Timinath Trail Rd. (40.52143, -104.97703)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 39.6240	Other (At-Grade) Single-Lane	2015	Year Completed estimated (2014-2015).
Timnath, CO Larimer Co. United States	Signal Tree Dr. / Stone Fly Dr. (40.51928, -104.97637)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 39.6240	Other (At-Grade) Single-Lane	2019	South leg stubbed. Year Completed estimated (2017-2019).
Windsor, CO Weld Co. United States	CO 257 / Pointe Plaza Dr. (40.47823, -104.88905)	Roundabout Existing	All-Way Yield At-grade Rail Crossing Signals/Gates (controlling approach only)	4 Approaches 0 Driveways 45.7200	Other (At-Grade) Single-Lane	2019	At-grade rail crossing located 370 feet to south. Year Completed estimated (2018-2019).
Windsor, CO Larimer Co. United States	Crystal Downs Dr. / Vernazza Way (40.45625, -104.97811)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 33.5280	Other (At-Grade) Single-Lane	2017	Year Completed estimated (2016-2017).
Berthoud, CO Weld Co. United States	CO 56 / I-25 SB Ramps (40.30636, -104.98169)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 0.0000	Freeway Ramps (Grade-Separated) Multilane (2 Lane, 2x1 max)	2021	https://www.codot.gov/news/2021/november-2021/co56-i25-reopens-early
Berthoud, CO Weld Co. United States	CO 56 / I-25 NB Ramps (40.30632, -104.97848)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 0.0000	Freeway Ramps (Grade-Separated) Multilane (2 Lane, 2x2 max)	2021	https://www.codot.gov/news/2021/november-2021/co56-i25-reopens-early
Middleton, ID Canyon Co. United States	Middleton Rd. / E Sawtooth Lake Dr. (43.69887, -116.61324)	Roundabout Unknown	All-Way Yield None	3 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane	2023	Scheduled for completion August 2023.
Middleton, ID Canyon Co. United States	N Middleton Rd. / E Main St. (Cornell St.) (43.70651, -116.61307)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 21.3360	Other (At-Grade) Single-lane w/ Traversable Central Island	2021
Ranson, WV Jefferson Co. United States	N Fairfax Blvd. / E 13th Ave. (39.30680, -77.85569)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 54.8640	Other (At-Grade) Single-Lane	2019	Peanut shaped. ICD = 180 ft on each end; 530 ft long. Year Completed estimated (2017-2020). This condition is locally known as the "Peanut" and constructed within the historic plat of the city where an oval park was visioned. The peanut shape will support additional approaches as further development occurs. https://www.cityofransonwv.net/149/Fairfax-Boulevard https://www.cityofransonwv.net/DocumentCenter/View/1219/Fairfax-Blvd-Extension---Engineering-Peanut?bidId=
Norman, OK Cleveland Co. United States	Corporate Centre Dr. (35.25673, -97.48459)	Roundabout Existing	All-Way Yield None	2 Approaches 0 Driveways 45.7200	Other (At-Grade) Single-Lane	2015	Year Completed estimated (2014-2015).
Rio, FL Martin Co. United States	SR 707 (NE Dixie Hwy.) / NE Martin Ave. (27.21959, -80.23709)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 30.4800	Other (At-Grade) Single-Lane	2010	Roundabout constructed by the Martin County CRA in coordination with the Rio 707 streetscape project.
Jensen Beach, FL Martin Co. United States	SR 707 (NE Dixie Hwy.) / NE Palmer St. / NE Langford Ln. (27.22321, -80.22038)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 35.0520	Other (At-Grade) Single-Lane	2018	Replaced triangular intersection.
Jensen Beach, FL Martin Co. United States	NE Savannah Rd. / NE Pinelake Village Blvd. / NE Collins Cir. (27.23035, -80.23639)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 33.5280	Other (At-Grade) Single-Lane	2008	Oval shaped. ICD = 110 ft x 95 ft. Crosswalks adjacent to circulatory roadway. Year Completed estimated (2007-2008).
Stuart, FL Martin Co. United States	NW Green River Pkwy. / NE Baker Rd. (27.22209, -80.25291)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 30.4800	Other (At-Grade) Single-Lane	2010	Year Completed estimated (2009-2010). North leg realigned from west; south leg added.
Indiantown, FL Martin Co. United States	SW Seminole Dr. / SW Osceola St. (27.01828, -80.46004)	Other Existing	All-Way Yield None	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane		No splitter islands on northwest, northeast, and southeast legs.
Middleton, ID Canyon Co. United States	W Highlands Pkwy. / 9th St. (43.71596, -116.64096)	Other Existing	All-Way Yield None	3 Approaches 0 Driveways 30.4800	Other (At-Grade) Single-Lane	2016	No splitter island on side street.
Middleton, ID Canyon Co. United States	W Highlands Pkwy. / Stallion Springs Way (43.71894, -116.63822)	Other Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 32.0037	Other (At-Grade) Single-Lane	2008	No splitter islands on side street. Year Completed estimated (2007-2009).
Longmont, CO Boulder Co. United States	Sundance Dr. / Galapagos Pl. (40.20011, -105.06468)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 30.4800	Other (At-Grade) Single-Lane	2016	Year Completed estimated (2016-2017).
Longmont, CO Boulder Co. United States	Sundance Dr. / Tyrrhenian Dr. (40.20202, -105.06468)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 30.4800	Other (At-Grade) Single-Lane	2016	Year Completed estimated (2016-2017).
Longmont, CO Boulder Co. United States	Sundance Dr. / Tyrrhenian Cir. (40.19784, -105.06451)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 30.4800	Other (At-Grade) Single-Lane	2016	Year Completed estimated (2016-2017).
Longmont, CO Boulder Co. United States	Sundance Dr. / Twilight Dr. (40.19529, -105.06175)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 30.4800	Other (At-Grade) Single-Lane	2016	Initial construction without splitter islands 1999-2002. Splitter islands added 2016-2017.
Longmont, CO Boulder Co. United States	S Martin St. / Bountiful Ave. (40.14740, -105.08831)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 30.4800	Other (At-Grade) Single-Lane	2017
Frederick, CO Weld Co. United States	Colorado Blvd. / 5th St. (40.09868, -104.94236)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 54.8640	Other (At-Grade) Single-Lane	2016	Striped out inside circulating lane and inside entry lanes on north and south legs, with evidence of vehicle paths traveling over striped circulatory roadway area. Year Completed estimated (2015-2017).
Frederick, CO Weld Co. United States	Aggregate Blvd. / Wyndham Hill Pkwy. (40.09242, -104.99890)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 54.8640	Other (At-Grade) Single-Lane	2006	Right-turn-only lanes on north and south legs. Striped out portions of circulatory roadway.
Erie, CO Boulder Co. United States	Jasper Rd. / Lombard St. (40.05485, -105.06504)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 33.5280	Other (At-Grade) Single-Lane	2021	Year Completed estimated (2020-2021).
Broomfield, CO Broomfield Co. United States	W 169th Ave. / Palisade Pkwy. (40.00437, -104.99443)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 42.6720	Other (At-Grade) Single-Lane	2014
Lafayette, CO Boulder Co. United States	Roser Dr. / Crater Lake Ln. / Murphy Creek Dr. (39.99879, -105.13387)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 36.5760	Other (At-Grade) Single-Lane	2009	Year Completed estimated (2008-2010).
Louisville, CO Boulder Co. United States	Roser Dr. / W Hecla Dr. / Paschal Dr. (39.99411, -105.13074)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 33.5280	Other (At-Grade) Single-Lane	2011
Louisville, CO Boulder Co. United States	E Hecla Dr. / Snowberry Ln. (39.99167, -105.12415)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 30.4800	Other (At-Grade) Single-Lane	2008	Year Completed estimated (2007-2008).
Louisville, CO Boulder Co. United States	E Hecla Dr. / Golden Eagle Way / Rose Ct. (39.99337, -105.12375)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 30.4800	Other (At-Grade) Single-Lane	2008	Year Completed estimated (2007-2008).
Thornton, CO Adams Co. United States	E 162nd Ave. / Grant St. / (parking) (39.98980, -104.98308)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 48.7680	Other (At-Grade) Single-Lane	2007
Thornton, CO Adams Co. United States	E 163rd Ave. / Elizabeth St. (39.99121, -104.95523)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 33.5280	Other (At-Grade) Single-Lane	2017	Year Completed estimated (2017-2018).
Brighton, CO Adams Co. United States	Longs Peak St. / N 46th Ave. (39.99462, -104.75972)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 33.5280	Other (At-Grade) Single-Lane	2021
Brighton, CO Adams Co. United States	Longs Peak St. / Silo Ct. (39.99463, -104.75777)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 33.5280	Other (At-Grade) Single-Lane	2022	Year Completed estimated (2021-2022).
Brighton, CO Adams Co. United States	Longs Peak St. / Baler Ct. (39.99464, -104.75476)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 33.5280	Other (At-Grade) Single-Lane	2022	Year Completed estimated (2021-2022).
Brighton, CO Adams Co. United States	Longs Peak St. / Bowie Dr. / N 46th Ave. (39.99239, -104.75969)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 33.5280	Other (At-Grade) Single-Lane	2021	2022 or earlier (SV)
Brighton, CO Adams Co. United States	156th Ave. / 157th Ave. / Syracuse Way (39.97989, -104.89921)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 38.1000	Other (At-Grade) Single-Lane	2018	Year Completed estimated (2018-2019).
Thornton, CO Adams Co. United States	Grant St. / E 146th Ave. / (parking) (39.96090, -104.98184)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 60.9600	Other (At-Grade) Multilane (2 Lane, 2x2 max)	2018	Year Completed estimated (2018-2019).
Thornton, CO Adams Co. United States	Grant St. / E 143rd Pl. (39.95485, -104.98191)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 60.9600	Other (At-Grade) Multilane (2 Lane, 2x2 max)	2013	Opened with north and west legs 2013. South and east legs added 2015.
Thornton, CO Adams Co. United States	Grant St. / E 141 Pl. (39.95214, -104.98286)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 60.9600	Other (At-Grade) Multilane (2 Lane, 2x1 max)	2016	West leg added 2022-2023.
Thornton, CO Adams Co. United States	Lincoln St. / E 141st Pl. / (parking) (39.95280, -104.98624)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 45.7200	Other (At-Grade) Single-Lane	2013
Thornton, CO Adams Co. United States	Grant St. / E 140th Ave. / (parking) (39.94932, -104.98311)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 62.4840	Other (At-Grade) Multilane (2 Lane, 2x1 max)	2018	Year Completed estimated (2018-2019).
Thornton, CO Adams Co. United States	Grant St. / (parking) (39.94597, -104.98307)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 60.9600	Other (At-Grade) Multilane (2 Lane, 2x1 max)	2018	Year Completed estimated (2018-2019).
Broomfield, CO Broomfield Co. United States	W 138th Ave. / Kalamath St. / Maddox Ct. (39.94514, -105.00113)	Roundabout Existing	All-Way Yield None	3 Approaches 1 Driveways 30.4800	Other (At-Grade) Single-Lane	2008
Broomfield, CO Broomfield Co. United States	W 138th Ave. / Quivas St. / Beacon St. (39.94559, -105.00860)	Roundabout Existing	All-Way Yield None	3 Approaches 1 Driveways 32.0040	Other (At-Grade) Single-Lane	2008	Year Completed estimated (2008-2010).
Thornton, CO Adams Co. United States	Tamarac St. / E 129th Ave. / Tamarac Way (39.93026, -104.89660)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 38.1000	Other (At-Grade) Single-Lane	2005	Year Completed estimated (2004-2005).
Thornton, CO Adams Co. United States	131st Ave. / Oneida St. (39.93268, -104.90764)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 38.1000	Other (At-Grade) Single-Lane	2005	Year Completed estimated (2004-2005).
Thornton, CO Adams Co. United States	Holly Cir. / Jasmine St. (39.92580, -104.91863)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 38.1000	Other (At-Grade) Single-Lane	2005	Year Completed estimated (2004-2005).
Henderson, CO Adams Co. United States	Henderson Rd. / E 124th Ave. / Park Blvd. (39.92505, -104.87550)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 45.7200	Other (At-Grade) Single-Lane	2022	Merging right-turn bypass lanes on north and east legs. https://adcogov.org/henderson-rd-park-blvd-roundabout-project
Brighton, CO Adams Co. United States	Southgate Blvd. / Gateway St. (39.91320, -104.83390)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 38.1000	Other (At-Grade) Multilane (2 Lane, 2x1 max)	2018	Year Completed estimated (2018-2019).
Commerce City, CO Adams Co. United States	E 119th Ave. / Oakland St. / (unknown) (39.91279, -104.84949)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 28.9560	Other (At-Grade) Single-Lane	2004	Year Completed estimated (2003-2004). East leg added 2008-2010.
Commerce City, CO Adams Co. United States	E 121st Ave. / Jasper St. (39.91627, -104.80425)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 36.5760	Other (At-Grade) Single-Lane	2003
Arvada, CO Jefferson Co. United States	W 94th Ave. / Hallett St. (39.86650, -105.22434)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 30.4800	Other (At-Grade) Single-Lane	2014
West Vancouver, BC Greater Vancouver Canada	Cross Creek Rd. / Chartwell Dr. (49.34530, -123.14714)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 30.0000	Other (At-Grade) Single-Lane	2012	Year Completed estimated (2011-2013).
West Vancouver, BC Greater Vancouver Canada	Taylor Way / Southborough Dr. / Stevens Dr. (49.34101, -123.13479)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 40.0000	Other (At-Grade) Single-Lane	2005	Yield-controlled right-turn bypass lane on south leg.
Coquitlam, BC Greater Vancouver Canada	Soball St. / Gislason Ave. (49.28930, -122.75026)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 25.0000	Other (At-Grade) Single-Lane	2011	Year Completed estimated (2009-2011).
Port Coquitlam, BC Greater Vancouver Canada	Fremont St. / Fremont Dr. / Hwy 7B (Loogheed Hwy.) Exit Ramp (49.24939, -122.73402)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 42.0000	Freeway Ramps (Grade-Separated) Single-Lane	2010	Raindrop shaped. Year Completed estimated (2008-2011).
Surrey, BC Greater Vancouver Canada	74 Ave. / 194A St. (49.13733, -122.68371)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 27.0000	Other (At-Grade) Single-Lane	2019
Surrey, BC Greater Vancouver Canada	194A St. / 73 Ave. (49.13550, -122.68375)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 30.0000	Other (At-Grade) Single-Lane	2014
Delta, BC Greater Vancouver Canada	Ferry Rd. / Admiral Way (49.11201, -123.07804)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 28.0000	Other (At-Grade) Single-Lane	2005
Delta, BC Greater Vancouver Canada	Ferry Rd. / Commodore Dr. (49.10577, -123.07907)	Traffic Calming Circle Existing	All-Way Yield None	3 Approaches 0 Driveways	Other (At-Grade) Single-lane w/ Traversable Central Island		Painted splitter islands.
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).
Surrey, BC Greater Vancouver Canada	25 Ave. / 166 St. (49.04745, -122.76265)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 40.0000	Other (At-Grade) Single-Lane	2022
Surrey, BC Greater Vancouver Canada	3A Ave. / 172 St. (49.00848, -122.74635)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 30.0000	Other (At-Grade) Single-Lane	2012
Gig Harbor, WA Pierce Co. United States	Olympus Way / Buckhorn Pl. / Copper Ct. (47.36278, -122.59679)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 24.3840	Other (At-Grade) Single-lane w/ Traversable Central Island	2014
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/
Tumwater, WA Thurston Co. United States	93rd Ave. SW / Lathrop Industrial Dr. (46.95285, -122.94231)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane	2022	Add-lane right-turn bypass lane on south leg. Year Completed estimated (2021-2022).