Roundabouts Database

29948 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
Raymore, MO
Cass Co.
United States 		MO 58 (E Walnut St.) / N Prairie Ln. / S Prairie Ln.
(38.80333, -94.42059) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane 		2023 https://www.modot.org/route-58-intersection-improvements
O'Fallon, MO
St. Charles Co.
United States 		Hwy DD / Dalriada Blvd.
(38.74631, -90.75882) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
50.2920 		Other (At-Grade)
Single-Lane 		2022 Right-turn-only lanes on southwest and northeast legs. Appears to be convertible to 2x1. https://www.sccmo.org/DocumentCenter/View/18378/OF_HIGHWAY-DD
Nixa, MO
Christian Co.
United States 		W Pembrook Ave. / S Norton Rd.
(37.03000, -93.30859) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
41.1480 		Other (At-Grade)
Single-Lane 		2023 No splitter island south leg. https://www.nixa.com/blog/2023/06/29/nixa-set-to-open-truman-blvd-tomorrow/
Rice Lake, WI
Barron Co.
United States 		STH 48 (21st Ave.) / West Ave. / 19th St.
(45.50939, -91.76507) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
47.2440 		Other (At-Grade)
Single-Lane 		2020 https://www.apg-wi.com/rice_lake_chronotype/free/traffic-changes-around-us-53-wis-48-interchange-in-rice-lake-coming-in-october/article_4e8de952-0334-11eb-a7de-678b8ff263bc.html
Bismarck, ND
Burleigh Co.
United States 		43rd Ave. NE / N 19th St.
(46.85254, -100.76214) 		Roundabout
Existing 		All-Way Yield
Unknown 		4 Approaches
0 Driveways
41.1480 		Other (At-Grade)
Single-Lane 		2022
Bismarck, ND
Burleigh Co.
United States 		43rd Ave. N / N 26th St.
(46.85246, -100.75128) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
47.2440 		Other (At-Grade)
Single-Lane 		2022
West Fargo, ND
Cass Co.
United States 		7th St. W / 19th Ave. W / 10th St. W
(46.85395, -96.91104) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
22.8600 		Other (At-Grade)
Single-Lane 		2018
Oromocto, NB
Sunbury
Canada 		Miramichi Rd. / St Lawrence Ave.
(45.84055, -66.48024) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
67.0000 		Other (At-Grade)
Single-Lane 		Before 2002.
Riverview, NB
Albert
Canada 		Bridgedale Blvd. / Runneymeade Rd.
(46.06430, -64.76196) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
45.0000 		Other (At-Grade)
Single-Lane 		2021 East leg stubbed. Year Completed estimated (2020-2021). https://www.townofriverview.ca/news/bridgedale-boulevard-is-taking-shape
(unincorporated), TX
Fort Bend Co.
United States 		Tamarron Point / Tamarron Park
(29.72909, -95.91359) 		Unknown
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-lane w/ Traversable Central Island 		2023 Fully mountable splitter and center islands
Dieppe, NB
Westmorland
Canada 		Gauvin Rd. / Alain-Gillette St. / Rue du College
(46.09572, -64.74054) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
32.0000 		Other (At-Grade)
Single-Lane 		2019 Year Completed estimated (2017-2021).
Perdido Key, FL
Escambia Co.
United States 		SR 292 (Perdido Key Dr.) / Johnson Beach Rd.
(30.29923, -87.42787) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane 		2023 Year Completed estimated (2022-2023). https://www.facebook.com/studio850/videos/perdido-key-roundabout-taking-shapesafer-speeds-and-reduced-congestion-are-goals/2442958579185514/
Pflugerville, TX
Travis Co.
United States 		Commons Pkwy. / Ambling Trl.
(30.48456, -97.57125) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
36.5760 		Other (At-Grade)
Single-Lane 		2007 Year Completed estimated (2006-2008).
Austin, TX
Williamson Co.
United States 		Lakeline Mall Dr. / Lyndhurst St.
(30.47763, -97.78664) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
33.5280 		Other (At-Grade)
Single-Lane 		2016 Year Completed estimated (2015-2016).
Pflugerville, TX
Travis Co.
United States 		N Cascades Ave. / Great Basin Ave.
(30.46198, -97.61835) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
32.0040 		Other (At-Grade)
Single-Lane 		2004 Year Completed estimated (2004-2005).
Pflugerville, TX
Travis Co.
United States 		NE Metro Park Rd. / (unknown)
(30.40890, -97.59725) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
33.5280 		Other (At-Grade)
Single-Lane 		2016 Year Completed estimated (2015-2016).
Austin, TX
Travis Co.
United States 		Center Lake Dr. / Parmer Ridge Dr.
(30.40955, -97.65799) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
38.1000 		Other (At-Grade)
Single-Lane 		2017
(unincorporated), TX
Hays Co.
United States 		Ledge Stone Dr. / Rocky Ridge Trl.
(30.20694, -97.97889) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
38.1000 		Other (At-Grade)
Single-Lane 		2007 Initially constructed 2006-2008 with southeast and northeast legs. Northwest leg added 2013-2014. Southwest leg added 2020-2021.
Fond du Lac, WI
Fond Du Lac Co.
United States 		E Pioneer Rd. / CR V
(43.75489, -88.42185) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
42.6720 		Other (At-Grade)
Single-Lane 		2019 https://www.fdl.wi.gov/engineering/wp-content/uploads/sites/14/2019/09/Media-Advisory-092019.pdf
Kitchener, ON
Waterloo
Canada 		Blair Creek Dr. / Doon South Dr.
(43.37282, -80.43378) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
35.0000 		Other (At-Grade)
Single-Lane 		2018 Year Completed estimated (2017-2018).
Kitchener, ON
Waterloo
Canada 		Blair Creek Dr. / Thomas Slee Dr.
(43.37033, -80.44091) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
35.0000 		Other (At-Grade)
Single-Lane 		2017 Year Completed estimated (2017-2018).
Waterloo, ON
Waterloo
Canada 		Millennium Blvd. / Crossgate Blvd.
(43.52326, -80.49690) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
35.0000 		Other (At-Grade)
Single-Lane 		2011 West leg stubbed. Year Completed estimated (2009-2012).
Rochester, MN
Olmsted Co.
United States 		Bella Terra Rd. NE / Shannon Oaks Blvd. NE
(44.03676, -92.41353) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
22.8600 		Other (At-Grade)
Single-lane w/ Traversable Central Island 		2023 Mini-roundabout.
Guelph, ON
Wellington
Canada 		Frederick Dr. / Colonial Dr. / Goodwin Dr.
(43.51457, -80.17591) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
50.0000 		Other (At-Grade)
Single-Lane 		2009 Year Completed estimated (2006-2009).
Guelph, ON
Wellington
Canada 		Goodwin Dr. / Hall Ave. / Tolton Dr.
(43.51005, -80.17930) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
50.0000 		Other (At-Grade)
Single-Lane 		2008 Year Completed estimated (2006-2009).
Guelph, ON
Wellington
Canada 		Goodwin Dr. / Beaver Meadow Dr.
(43.50679, -80.18360) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
50.0000 		Other (At-Grade)
Single-Lane 		2002 Year Completed estimated (2000-2006).
Guelph, ON
Wellington
Canada 		Clairfields Dr. / Farley Dr.
(43.50556, -80.19153) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
50.0000 		Other (At-Grade)
Single-Lane 		2001 Year Completed estimated (1998-2006).
Freedom, PA
Beaver Co.
United States 		SR 989 (Dunlap Hill Rd.) / Freedom Crider Rd.
(40.67684, -80.19046) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Unknown 		2022 Year Completed estimated (2022-2023).
Pittsburgh, PA
Allegheny Co.
United States 		Crawford Rd. / Buckingham Dr. / Cobblestone Dr.
(40.53998, -80.08945) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
36.5760 		Other (At-Grade)
Single-Lane 		2009 Year Completed estimated (2008-2010).
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).
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