Roundabouts Database Index

29867 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
Waukee, IA Dallas Co. United States	NW Sunrise Dr. / NW 6th St. / (parking) (41.62216, -93.88667)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 51.8160	Other (At-Grade) Multilane (2 Lane, 2x1 max)	2021	Access to school. https://www.waukee.org/194/Capital-Improvement-Projects
Camanche, IA Clinton Co. United States	US 67 / 7th Ave. (41.79727, -90.25775)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane	2023	https://www.youtube.com/watch?v=r8ajPBUZU6E
Columbia, MD Howard Co. United States	Tamar Dr. / Old Montgomery Rd. (39.20533, -76.82822)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 30.4800	Other (At-Grade) Single-Lane	2022	https://www.howardcountymd.gov/News090122c
Hobart, WI Brown Co. United States	Marley St. / Triangle Dr. / Oneida Way (44.57460, -88.17586)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane	2022	North leg stubbed. https://wisconsindot.gov/Pages/projects/by-region/ne/wis29study/schedule.aspx
Hobart, WI Brown Co. United States	N Overland Rd. / Oneida Way / Centerline Dr. (44.57140, -88.16988)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 47.2440	Other (At-Grade) Single-Lane	2022
Five Corners, WA Clark Co. United States	NE 94th Ave. / NE 99th St. (45.69343, -122.57575)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 39.6240	Other (At-Grade) Single-Lane	2023
Marmaduke, AR Greene Co. United States	US 49 (S 3rd St.) / SR 34 (36.18693, -90.38488)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-lane w/ Traversable Central Island	2023	Year Completed estimated (2022-2023). November 2022: https://www.youtube.com/watch?v=LurUNtZaU7w May 2023: https://www.youtube.com/watch?v=Kmntt4a_kvI
Westmere, NY Albany Co. United States	Crossgates Mall Rd. / Adirondack Northway Ramps (42.68736, -73.84561)	Roundabout Existing	All-Way Yield Unknown	3 Approaches 0 Driveways 0.0000	Other (At-Grade) Multilane (2 Lane, 2x1 max)	2023	https://spectrumlocalnews.com/nys/capital-region/news/2023/03/23/roundabout-coming-to-crossgates-mall-
Macomb, MI Macomb Co. United States	25 Mile Rd. / Romeo Plank Rd. / Garfield Rd. (42.70077, -82.95901)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 42.6720	Other (At-Grade) Multilane (2 Lane, 2x2 max)	2022	Year Completed estimated (2021-2022).
Clarksville, TN Montgomery Co. United States	Henry Place Blvd. / Bandera Dr. (36.60740, -87.38149)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 30.4800	Other (At-Grade) Single-Lane	2013
Saukville, WI Ozaukee Co. United States	STH 33 / CTH I (43.39585, -87.97946)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 42.6717	Other (At-Grade) Single-Lane	2022
Colgate, WI Waukesha Co. United States	CTH Q / Hillside Rd. (43.19319, -88.24181)	Roundabout Unknown	All-Way Yield None	4 Approaches 0 Driveways 42.6717	Other (At-Grade) Single-Lane	2023
Somers, WI Kenosha Co. United States	CTH Y / CTH A (42.65320, -87.83596)	Roundabout Unknown	All-Way Yield None	4 Approaches 0 Driveways 42.6717	Other (At-Grade) Single-Lane	2023	https://www.kenoshacounty.org/CivicAlerts.aspx?AID=2888
Brown Deer, WI Milwaukee Co. United States	STH 57 / Teutonia Ave. (43.17202, -87.96338)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 48.7680	Other (At-Grade) Multilane (2 Lane, unspecified)	2022
Oconomowoc, WI Waukesha Co. United States	Pabst Rd. / Olympia Fields Dr. (43.08687, -88.47287)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 48.7680	Other (At-Grade) Multilane (2 Lane, 2x1 max)	2022
Bend, OR Deschutes Co. United States	US 20 / Cooley Rd. (44.10922, -121.31043)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Multilane (2 Lane, 2x2 max)	2023	Opened May 26, 2023 during construction as single-lane roundabout but designed to be a multilane roundabout.
Woodstock, GA Cherokee Co. United States	Wiley Bridge Rd. / Cox Rd. (34.09392, -84.43287)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane	2023	Year Completed estimated (2022-2023).
Langley, BC Greater Vancouver Canada	64 Ave. / 232 St. (49.11889, -122.58167)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 40.0000	Other (At-Grade) Single-Lane	2020
Nampa, ID Canyon Co. United States	N Franklin Blvd. / Birch Ln. (43.61231, -116.55315)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Multilane (2 Lane, 2x1 max)	2023	https://twitter.com/NampaPIO/status/1654208519175045120
Nampa, ID Canyon Co. United States	E Victory Rd. / N Kings Rd. (43.57584, -116.53288)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 48.7680	Other (At-Grade) Single-Lane	2022	https://twitter.com/NampaPIO/status/1606348916282101760
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).
Fargo, ND Cass Co. United States	23rd Ave. S / 41st St. S (46.84327, -96.84778)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 51.8160	Other (At-Grade) Multilane (2 Lane, 2x1 max)	2020	Year Completed estimated (2018-2020).
Sisseton, SD Roberts Co. United States	SR 10 (W Hickory St. - 119th St.) / 8th Ave. W / BIA Hwy 700 (45.66001, -97.06128)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 39.6240	Other (At-Grade) Single-Lane	2020	Year Completed estimated (2019-2020).
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.
Bracebridge, ON Muskoka Canada	Taylor Rd. / Cedar Ln. (45.05055, -79.29578)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 40.0000	Other (At-Grade) Single-Lane	2012	Year Completed estimated (2009-2012).
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 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).
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.
Stuart, FL Martin Co. United States	NW Britt Rd. / NW Fresco Way / NW Goldenrod Rd. (27.23781, -80.26708)	Other Existing	Other None	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Multilane (2 Lane, 2x2 max)		Concentric striped circulatory roadway. Stop control on south leg.
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).
Middleton, ID Canyon Co. United States	W Highlands Ranch Pkwy. / W Ayrshire St. (43.72271, -116.64060)	Other Existing	Unknown Unknown	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane		No splitter islands on side street. Pedestrian crossings within circulatory roadway.
Middleton, ID Canyon Co. United States	W Highlands Ranch Pkwy. / N Sombrero Ave. (43.72247, -116.64464)	Other Existing	Unknown Unknown	3 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane		No splitter island on side street. Unmarked pedestrian crossings within or adjacent to circulatory roadway.
Middleton, ID Canyon Co. United States	W Highland Ranch Pkwy. / N Branding Iron Ave. / W Blue Lightning St. (43.72344, -116.65073)	Other Existing	Unknown Unknown	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane		No splitter islands on side street. Pedestrian crossings within or adjacent to circulatory roadway.
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).