Roundabouts Database

29410 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
Ottumwa, IA
Wapello Co.
United States 		N Ferry St. / Richmond Ave.
(41.00736, -92.43270) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
19.8280 		Other (At-Grade)
Unknown 		2018 Opened summer 2018. https://www.google.com/maps/d/viewer?mid=12miH60MU576dGTib4lVgSXtLX2U&hl=en&gl=us&ie=UTF8&oe=UTF8&msa=0&ll=41.0083054%2C-92.43248460000001&z=17 ICD estimated from Google Maps linework.
Marion, IA
Linn Co.
United States 		35th St. / Tower Terrace Rd.
(42.06130, -91.57655) 		Roundabout
Existing 		All-Way Yield
Unknown 		4 Approaches
0 Driveways
31.9213 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		2011 Fourth leg is stubbed for future expansion. ICD estimated from Google Maps linework.
Mount Vernon, IA
Linn Co.
United States 		US-30 E / 10th Ave S
(41.91643, -91.42947) 		Roundabout
Existing 		All-Way Yield
Unknown 		3 Approaches
0 Driveways
40.8813 		Other (At-Grade)
Single-Lane 		2013 ICD estimated from Google Maps linework.
Mount Vernon, IA
Linn Co.
United States 		US-30 SE / IA-1(1st Ave S)
(41.91563, -91.42243) 		Roundabout
Existing 		All-Way Yield
Unknown 		4 Approaches
0 Driveways
186.6343 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		2013 ICD estimated from Google Maps linework.
Peosta, IA
Dubuque Co.
United States 		Peosta St / NICC Dr
(42.44531, -90.84966) 		Roundabout
Existing 		All-Way Yield
Unknown 		4 Approaches
0 Driveways
103.1146 		Other (At-Grade)
Single-Lane 		2012 Entrance to Northeast Iowa Community College ICD estimated from Google Maps linework.
(unincorporated), IA
Buchanan Co.
United States 		120th St. / Baxter Ave.
(42.61280, -92.05736) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
45.7200 		Other (At-Grade)
Single-Lane 		2012 Rural with high-speed approaches.
Ankeny, IA
Polk Co.
United States 		SW Irvinedale Dr / NW Polk City Dr / SE Vintage Pkwy
(41.71706, -93.63888) 		Roundabout
Existing 		All-Way Yield
Unknown 		4 Approaches
0 Driveways
49.9237 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		2013 ICD estimated from Google Maps linework.
Mason City, IA
Cerro Gordo Co.
United States 		Mohawk Boulevard / Mason City HS parking lots
(43.14796, -93.16502) 		Roundabout
Existing 		All-Way Yield
Unknown 		3 Approaches
0 Driveways
 Other (At-Grade)
Single-Lane 		2013
Cedar Falls, IA
Black Hawk Co.
United States 		W Ridgeway Ave / Chancellor Dr
(42.47011, -92.45341) 		Roundabout
Existing 		All-Way Yield
Unknown 		4 Approaches
0 Driveways
48.4535 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		2011 ICD estimated from Google Maps linework.
Ankeny, IA
Polk Co.
United States 		SW Cherry St / SW 11th
(41.71942, -93.60882) 		Roundabout
Existing 		All-Way Yield
Unknown 		4 Approaches
0 Driveways
64.1853 		Other (At-Grade)
Single-Lane 		2011 ICD estimated from Google Maps linework.
Ankeny, IA
Polk Co.
United States 		SW Campustown Ct
(41.71034, -93.61365) 		Roundabout
Existing 		All-Way Yield
Unknown 		4 Approaches
0 Driveways
136.4130 		Other (At-Grade)
Single-Lane 		2013 ICD estimated from Google Maps linework.
Marion, IA
Linn Co.
United States 		Alburnett Rd / Tower Terrace
(42.05859, -91.61401) 		Roundabout
Existing 		All-Way Yield
Unknown 		3 Approaches
0 Driveways
39.9034 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		2013 ICD estimated from Google Maps linework.
Coralville, IA
Johnson Co.
United States 		Heartland Dr. / Russell Dr.
(41.70007, -91.61160) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
41.9113 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		2013 ICD estimated from Google Maps linework.
Coralville, IA
Johnson Co.
United States 		Ridgeway Dr / University Ct
(41.71577, -91.59998) 		Roundabout
Existing 		All-Way Yield
Unknown 		3 Approaches
0 Driveways
36.5520 		Other (At-Grade)
Single-Lane 		2013 ICD estimated from Google Maps linework.
Coralville, IA
Johnson Co.
United States 		University Ct / University Pkwy
(41.71383, -91.60093) 		Roundabout
Existing 		All-Way Yield
Unknown 		3 Approaches
0 Driveways
36.5531 		Other (At-Grade)
Single-Lane 		2013 ICD estimated from Google Maps linework.
Janesville, IA
Bremer Co.
United States 		Barrick Rd. / US 218 SB Ramps
(42.64937, -92.45388) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
53.3400 		Freeway Ramps (Grade-Separated)
Single-Lane 		2012
Janesville, IA
Bremer Co.
United States 		Barrick Rd. / US 218 NB Ramps
(42.64935, -92.44918) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
45.7200 		Freeway Ramps (Grade-Separated)
Single-Lane 		2012
Gilbert, IA
Story Co.
United States 		Gretten St / Matthews Dr
(42.10645, -93.64027) 		Roundabout
Existing 		All-Way Yield
Unknown 		4 Approaches
0 Driveways
84.1769 		Other (At-Grade)
Single-Lane 		2013 ICD estimated from Google Maps linework.
Johnston, IA
Polk Co.
United States 		NW 106th St. / NW 62nd Ave.
(41.67292, -93.76427) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
51.8160 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		2012
Johnston, IA
Polk Co.
United States 		NW 62nd Ave / Pioneer Hi-Bred Crick Bldg
(41.67292, -93.72965) 		Roundabout
Existing 		All-Way Yield
Unknown 		3 Approaches
0 Driveways
39.2527 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		2012 ICD estimated from Google Maps linework.
Johnston, IA
Polk Co.
United States 		NW 62nd Ave / South Dr
(41.67279, -93.72054) 		Roundabout
Existing 		All-Way Yield
Unknown 		4 Approaches
0 Driveways
36.5765 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		2012 ICD estimated from Google Maps linework.
Johnston, IA
Polk Co.
United States 		NW 62nd Ave / North Dr
(41.67272, -93.71476) 		Roundabout
Existing 		All-Way Yield
Unknown 		3 Approaches
0 Driveways
37.4686 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		2012 ICD estimated from Google Maps linework.
Johnston, IA
Polk Co.
United States 		NW 62nd Ave / Pioneer Pkwy
(41.67275, -93.71210) 		Roundabout
Existing 		All-Way Yield
Unknown 		3 Approaches
0 Driveways
37.4686 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		2012 ICD estimated from Google Maps linework.
Bettendorf, IA
Scott Co.
United States 		53rd Ave. / Middle Rd.
(41.57538, -90.46408) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
37.5252 		Other (At-Grade)
Single-Lane 		2002 Right turn bypass lanes striped within roundabout. Construction cost ~$865,000. Information from website: http://www.bettendorf.lib.ia.us/publicworks/roundabout.html ICD estimated from Google Maps linework.
Coralville, IA
Johnson Co.
United States 		1st Ave. / Holiday Rd.
(41.69276, -91.56655) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
33.8896 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		2002 Opened September 1, 2002. Previously controlled by one-way stop Functional Class: Collector ICD estimated from Google Maps linework.
Oskaloosa, IA
Mahaska Co.
United States 		Hwy 432 / Old Hwy 163 / Pella Ave. / Orchard Ave.
(41.30376, -92.66716) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
35.8882 		Other (At-Grade)
Single-Lane 		2004 Completed April 2004. Site has sunken hole in central island with tunnels for bike path that passes under circulatory roadway. Experienced two single-vehicle crashes into sunken central island (alcohol-related). ICD estimated from Google Maps linework.
West Des Moines, IA
Dallas Co.
United States 		Wistful Vista Dr. / S. 79th St.
(41.56572, -93.81668) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
36.6372 		Other (At-Grade)
Single-Lane 		1999 ICD estimated from Google Maps linework.
Des Moines, IA
Polk Co.
United States 		Gannett Ave. / Rittenhouse St.
(41.52031, -93.65178) 		Roundabout
Existing 		Unknown
Unknown 		4 Approaches
0 Driveways
41.1341 		Other (At-Grade)
Single-Lane 		2000 ICD estimated from Google Maps linework.
Altoona, IA
Polk Co.
United States 		10th Ave. SE / 15th St. SE
(41.63733, -93.45121) 		Other
Removed 		Unknown
Unknown 		4 Approaches
0 Driveways
18.2880 		Other (At-Grade)
Single-Lane 		2024 No splitter islands. Opened December 16, 2005. Circle replaced with a 4-way stop in 2024. https://www.altoona-iowa.com/news_detail_T2_R153.php
(unincorporated), IA
Blackhawk Co.
United States 		Independence Ave. (IA 281) / Raymond Rd. (V49)
(42.49790, -92.21953) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
38.7456 		Other (At-Grade)
Single-Lane 		2008 Opened Octboer 29, 2008. First roundabout in Iowa with 55mph approaches. Previously controlled by two-way stop ICD estimated from Google Maps linework.
Cedar Falls, IA
Blackhawk Co.
United States 		Cedar Heights Dr. / Viking Rd.
(42.48899, -92.41638) 		Roundabout
Existing 		All-Way Yield
Unknown 		3 Approaches
0 Driveways
54.8640 		Other (At-Grade)
Single-Lane 		2007 Right-turn-only lane on west leg. Intersection relocated from T-intersection to the south. Opened November 2007.
Clive, IA
Dallas Co.
United States 		NW 156th St. / Boston Pkwy.
(41.62066, -93.83356) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
43.7487 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		2002 ICD estimated from Google Maps linework.
Clive, IA
Dallas Co.
United States 		Berkshire Pkwy. / Sheridan Ave.
(41.61697, -93.84561) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
45.5370 		Other (At-Grade)
Single-Lane 		2001 ICD estimated from Google Maps linework.
Clive, IA
Dallas Co.
United States 		Berkshire Pkwy. / Boston Pkwy.
(41.62153, -93.84657) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
30.3558 		Other (At-Grade)
Single-Lane 		2005 ICD estimated from Google Maps linework.
Coralville, IA
Johnson Co.
United States 		E. 9th St. / Quarry Rd.
(41.68176, -91.55988) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
36.5714 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		2006 Opened August 15, 2006. ICD estimated from Google Maps linework.
Coralville, IA
Johnson Co.
United States 		Holiday Rd. / Corridor Way
(41.69709, -91.60332) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
30.3202 		Other (At-Grade)
Single-Lane 		2007 ICD estimated from Google Maps linework.
Ottumwa, IA
Wapello Co.
United States 		US 34 / US 63
(41.00102, -92.40453) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
42.3638 		Other (At-Grade)
Single-Lane 		2006 Opened November 2006. Right turn bypass lanes on all approaches. ICD estimated from Google Maps linework.
Urbandale, IA
Dallas Co.
United States 		142nd St. / Douglas Pkwy.
(41.62940, -93.80899) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
44.6355 		Other (At-Grade)
Single-Lane 		2004 ICD estimated from Google Maps linework.
Coralville, IA
Johnson Co.
United States 		12th Ave. / Forevergreen Rd.
(41.72284, -91.59520) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
32.9823 		Other (At-Grade)
Single-Lane 		2005 http://www.coralville.org/mod/press/documents/12th%20Ave%2011-18-05.pdf. Opened November 16, 2005. ICD estimated from Google Maps linework.
Maryville, IA
Fayette Co.
United States 		IA 3 / IA 187
(42.68763, -91.64565) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
39.5057 		Other (At-Grade)
Single-Lane 		2009 Rural ICD estimated from Google Maps linework.
Altoona, IA
Polk Co.
United States 		Bass Pro Dr. / Prairie Fire Blvd.
(41.65177, -93.51022) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
42.8352 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		2009 Part of Bass Pro Shops commercial shopping center. ICD estimated from Google Maps linework.
Ankeny, IA
Polk Co.
United States 		SW Goodwin St. / Springfield Dr.
(41.69388, -93.61487) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
24.9709 		Other (At-Grade)
Single-Lane 		2004 One of three in a new residential development. Functional Class: Local ICD estimated from Google Maps linework.
Ankeny, IA
Polk Co.
United States 		SW Somersby Blvd. / Springfield Dr.
(41.69387, -93.61252) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
1 Driveways
24.0790 		Other (At-Grade)
Single-Lane 		2004 One of three in a new residential development. Functional Class: Local ICD estimated from Google Maps linework.
Ankeny, IA
Polk Co.
United States 		SW Somersby Blvd. / 46th St.
(41.69155, -93.61253) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
24.0799 		Other (At-Grade)
Single-Lane 		2004 One of three in a new residential development. Functional Class: Local ICD estimated from Google Maps linework.
Ankeny, IA
Polk Co.
United States 		SW Snyder Blvd. / Springfield Dr.
(41.69610, -93.60439) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
25.8618 		Other (At-Grade)
Single-Lane 		2006 In new residential development. Functional Class: Local ICD estimated from Google Maps linework.
Ankeny, IA
Polk Co.
United States 		NW 13th St. / Boulder Dr.
(41.74220, -93.64587) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
25.8432 		Other (At-Grade)
Single-Lane 		2005 In new residential development. Functional Class: Local ICD estimated from Google Maps linework.
Ankeny, IA
Polk Co.
United States 		SW White Birch Dr. / Braeburn St.
(41.70018, -93.62535) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
55.2872 		Other (At-Grade)
Single-Lane 		2005 In new residential development. Functional Class: Local ICD estimated from Google Maps linework.
Ankeny, IA
Polk Co.
United States 		NW 5th St. / Abbie Dr.
(41.73569, -93.66248) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
24.0634 		Other (At-Grade)
Single-Lane 		2008 In new residential development. Functional Class: Local ICD estimated from Google Maps linework.
Cedar Falls, IA
Black Hawk Co.
United States 		Brandilynn Blvd. / Prairie Pkwy.
(42.48552, -92.43468) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
42.2763 		Other (At-Grade)
Single-Lane 		2009 In new commercial development. Functional Class: Local ICD estimated from Google Maps linework.
Fort Dodge, IA
Webster Co.
United States 		10th Ave. N. / N. 32nd St.
(42.51522, -94.14932) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
37.8545 		Other (At-Grade)
Single-Lane 		2009 Replaced two T intersections. ICD estimated from Google Maps linework.
Iowa City, IA
Johnson Co.
United States 		Grand Ave. / S. Grand Ave.
(41.65855, -91.54559) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
23.2000 		Other (At-Grade)
Single-Lane 		2007 On University of Iowa school campus. Functional Class: Local ICD estimated from Google Maps linework.
Iowa City, IA
Johnson Co.
United States 		Kennedy Pkwy. / Meadowlark Dr.
(41.66899, -91.59541) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
28.5492 		Other (At-Grade)
Single-Lane 		2006 In new residential development. Functional Class: Local ICD estimated from Google Maps linework.
Waverly, IA
Bremer Co.
United States 		1st Ave. NW / 8th St. NW
(42.72669, -92.48061) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
34.2167 		Other (At-Grade)
Single-Lane 		2005 Replaced "T" intersection at entry to Wartburg College school campus. ICD estimated from Google Maps linework.
West Des Moines, IA
Dallas Co.
United States 		W. Wells Fargo Trl. / Wells Fargo Terr.
(41.55986, -93.80373) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
25.0228 		Other (At-Grade)
Single-Lane 		2005 In new Wells Fargo commercial development. ICD estimated from Google Maps linework.
West Des Moines, IA
Dallas Co.
United States 		W. Wells Fargo Trl. / E. Wells Fargo Terr.
(41.55994, -93.80212) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
26.8101 		Other (At-Grade)
Single-Lane 		2005 In new Wells Fargo commercial development. ICD estimated from Google Maps linework.
West Des Moines, IA
Dallas Co.
United States 		West Access / W. Wells Fargo Trl.
(41.55749, -93.80611) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
28.5986 		Other (At-Grade)
Single-Lane 		2006 In new Wells Fargo commercial development. ICD estimated from Google Maps linework.
West Des Moines, IA
Dallas Co.
United States 		Village View Dr. / Prairie View Dr. (Blue Stem Circle)
(41.56376, -93.78467) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
45.5745 		Other (At-Grade)
Single-Lane 		2007 New residential/commercial development on former Ponderosa Golf Course. ICD estimated from Google Maps linework.
West Des Moines, IA
Dallas Co.
United States 		S. Crescent Way / Stagecoach Dr.
(41.56252, -93.78701) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
33.9581 		Other (At-Grade)
Single-Lane 		2007 Intersection of two private residential streets on former Ponderosa Golf Course. ICD estimated from Google Maps linework.
West Des Moines, IA
Dallas Co.
United States 		S. Crescent Way / S. Ridgefield Way / Fairway Dr.
(41.56541, -93.78633) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
33.9566 		Other (At-Grade)
Single-Lane 		2007 Intersection of two private residential streets on former Ponderosa Golf Course. ICD estimated from Google Maps linework.
Waukee, IA
Dallas Co.
United States 		Ashworth Dr. / Warrior Ln.
(41.60717, -93.87220) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane 		2021 Replaced five-leg intersection. West leg removed, tied into northwest leg. https://www.waukee.org/1095/Warrior-Lane-Improvements
Marion, IA
Linn Co.
United States 		County Home Rd. / C Ave. Extension
(42.09487, -91.64848) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane 		2021 https://cbs2iowa.com/news/local/county-home-road-reopens-in-linn-county-after-improvement-project
Marion, IA
Linn Co.
United States 		County Home Rd. / Alburnett Rd.
(42.09450, -91.61904) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
45.7200 		Other (At-Grade)
Single-Lane 		2020 Year Completed estimated (2019-2020).
Marion, IA
Linn Co.
United States 		10th St. / 10th Ave. / Central Ave.
(42.03629, -91.59934) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-lane w/ Traversable Central Island 		2021 https://www.cityofmarion.org/Home/Components/News/News/6547/
Cedar Rapids, IA
Linn Co.
United States 		Kirkwood Blvd. / Woodstone Ln. SW
(41.89597, -91.65653) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane 		2022 Year Completed estimated (2021-2022).
Iowa City, IA
Johnson Co.
United States 		American Legion Rd. / S Scott Blvd. / Muscatine Ave.
(41.64977, -91.48288) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane 		2021 https://www.facebook.com/CityofIowaCity/posts/228146692693035
Twin City, IA
Pottawattamie Co.
United States 		Chippewa Ln.
(41.22800, -95.87278) 		Other
Existing 		Unknown
Unknown 		3 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Unknown 		Building in central island.
Waterloo, IA
Black Hawk Co.
United States 		University Ave. / Fletcher Ave.
(42.49612, -92.36709) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
57.9120 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		2021
Altoona, IA
Polk Co.
United States 		NE 62nd Ave. / 20th Ave. NW
(41.67289, -93.48702) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
45.7200 		Other (At-Grade)
Single-Lane 		2022 Year Completed estimated (2021-2022).
Davenport, IA
Scott Co.
United States 		Leclaire St. / E 2nd St.
(41.52114, -90.56831) 		Roundabout
Existing 		All-Way Yield
Unknown 		3 Approaches
0 Driveways
45.7200 		Other (At-Grade)
Single-Lane 		2024 Located underneath railroad bridge and connecting to lower deck of bridge over river. https://www.kwqc.com/video/2024/08/09/rock-island-arsenal-davenport-update-progress-government-bridge-traffic-circle/
Polk City, IA
Polk Co.
United States 		Vista Lake Ct / N 3rd St / NW Sheldahl Dr
(41.78316, -93.71045) 		Roundabout
Existing 		All-Way Yield
Unknown 		4 Approaches
0 Driveways
42.6720 		Other (At-Grade)
Single-Lane 		2022 https://www.polkcityia.gov/sites/g/files/vyhlif5571/f/pages/notice_to_bidders_3rd_and_vista_lake_intersection_improvements_2021-11-22.pdf
Waukee, IA
Dallas Co.
United States 		NW 2nd St. / NW Sunrise Dr.
(41.62191, -93.88215) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
45.7200 		Other (At-Grade)
Single-Lane 		2022 East leg stubbed. Yield-controlled right-turn bypass lane on west leg. Year Completed estimated (2021-2022). https://www.waukee.org/194/Capital-Improvement-Projects
Waukee, IA
Dallas Co.
United States 		NW 2nd St. / (parking)
(41.62461, -93.88202) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
45.7200 		Other (At-Grade)
Single-Lane 		2022 East leg stubbed. Access to school and park. Year Completed estimated (2021-2022). https://www.waukee.org/194/Capital-Improvement-Projects
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
Waterloo, IA
Black Hawk Co.
United States 		W 9th St. / South St.
(42.48850, -92.33818) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane 		2023 https://k923.fm/new-waterloo-roundabout-is-almost-complete-look/
Cedar Rapids, IA
Linn Co.
United States 		6th St. SW / (parking)
(41.90137, -91.67614) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
45.7200 		Other (At-Grade)
Single-Lane 		2022 Year Completed estimated (2021-2022).
Coralville, IA
Johnson Co.
United States 		N Liberty Rd. NE / Forevergreen Rd.
(41.72584, -91.57089) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane 		2022 https://www.johnsoncountyiowa.gov/news/secondary-roads/2022-04-21/construction-north-liberty-and-forevergreen-roads-roundabout-begins
Coralville, IA
Johnson Co.
United States 		(unknown) / (unknown)
(41.72647, -91.56882) 		Unknown
Existing 		Unknown
Unknown 		4 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Unknown 		2023
Iowa City, IA
Johnson Co.
United States 		Sycamore St. SE / McCollister Blvd.
(41.62554, -91.51193) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
1 Driveways
41.1480 		Other (At-Grade)
Single-Lane 		2015 Year Completed estimated (2014-2016). Initially constructed with north and south legs, plus driveway to east. West leg added 2017-2019.
Cedar Falls, IA
Black Hawk Co.
United States 		Greenhill Rd. / Cedar Heights Dr.
(42.49805, -92.41128) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Multilane (2 Lane, 2x2 max) 		2021 Year Completed estimated (2021-2022).
Cedar Falls, IA
Black Hawk Co.
United States 		Cedar Heights Dr. / Huntington Rd.
(42.49125, -92.41124) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane 		2022
Cedar Falls, IA
Black Hawk Co.
United States 		W Ridgeway Ave. / Goldfinch Dr.
(42.46945, -92.44998) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
2 Driveways
51.8160 		Other (At-Grade)
Multilane (2 Lane, 2x1 max) 		2019 Year Completed estimated (2018-2020).
Brayton, IA
Cass Co.
United States 		710th St. / 350th St.
(41.50440, -94.83505) 		Other
Existing 		Unknown
Unknown 		4 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane 		Cottonwood tree in center of intersection. On Audubon County-Cass County Line. https://www.roadsideamerica.com/tip/8830
Cedar Rapids, IA
Linn Co.
United States 		16th Ave. SE / 5th St. SE
(41.97092, -91.65498) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
33.5280 		Other (At-Grade)
Single-Lane 		2017 Year Completed estimated (2017-2019).
West Des Moines, IA
Polk Co.
United States 		Market St. / S Prairie View Dr. / Mills Civic Pkwy.
(41.56098, -93.78384) 		Other
Existing 		Unknown
Unknown 		5 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Unknown 		Pedestrian access to central island.
Urbandale, IA
Dallas Co.
United States 		Tanglewood Dr. / 159th St.
(41.63969, -93.83774) 		Other
Existing 		Unknown
Unknown 		4 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Unknown 		No splitter islands.
Urbandale, IA
Dallas Co.
United States 		Tanglewood Dr. / 160th St.
(41.64042, -93.84043) 		Other
Existing 		Unknown
Unknown 		4 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Unknown 		No splitter islands.
Urbandale, IA
Dallas Co.
United States 		160th St. / Alpine Dr.
(41.64214, -93.83906) 		Other
Existing 		Unknown
Unknown 		4 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Unknown 		No splitter islands.
Urbandale, IA
Dallas Co.
United States 		162nd St. / Alpine Dr.
(41.64249, -93.84126) 		Other
Existing 		Unknown
Unknown 		4 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Unknown 		No splitter islands.
Altoona, IA
Polk Co.
United States 		1st Ave. N / 9th St. NW / NE 54th Ave.
(41.65860, -93.46447) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Unknown 		2022 https://littlevillagemag.com/altoona-1st-avenue-roundabout-woven-lines-sculpture/
Le Claire, IA
Scott Co.
United States 		Wisconsin St. / 35th St. SW / (parking)
(41.59770, -90.39139) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
1 Driveways
45.7200 		Other (At-Grade)
Single-Lane 		2022 Replaced offset T intersections. https://www.leclaireiowa.gov/340/Wisconsin-Street-and-35th-Street-Reconst
Iowa City, IA
Johnson Co.
United States 		Herbert Hoover Hwy. NE / I-80 WB Ramps
(41.67198, -91.44380) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
0.0000 		Freeway Ramps (Grade-Separated)
Single-Lane 		2022 Previous intersection was entrance ramp only. https://www.news.iowadot.gov/newsandinfo/2022/06/eastbound-i-80-ramps-at-herbert-hoover-highwayjohnson-county-road-f-44-exit-249-in-johnson-county-to.html
Iowa City, IA
Johnson Co.
United States 		Herbert Hoover Hwy. SE / I-80 EB Ramps
(41.67099, -91.44629) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
0.0000 		Freeway Ramps (Grade-Separated)
Single-Lane 		2022 Previous intersection was exit ramp only. https://www.news.iowadot.gov/newsandinfo/2022/06/eastbound-i-80-ramps-at-herbert-hoover-highwayjohnson-county-road-f-44-exit-249-in-johnson-county-to.html
Cedar Rapids, IA
Linn Co.
United States 		Johnson Ave. NW / Jacolyn Dr. NW
(41.96894, -91.73181) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
25.9080 		Other (At-Grade)
Single-lane w/ Traversable Central Island 		2020 Year Completed estimated (2019-2020).
Cedar Falls, IA
Black Hawk Co.
United States 		Greenhill Rd. / S Main St.
(42.49855, -92.44586) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Multilane (2 Lane, 2x1 max) 		2022 https://www.cedarfalls.com/1572/South-MainGreenhill-Intersection-Improve
Hiawatha, IA
Linn Co.
United States 		Tower Terrace Rd. / N Center Point Rd.
(42.05872, -91.69228) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
53.3400 		Other (At-Grade)
Multilane (2 Lane, 2x1 max) 		2022 https://www.facebook.com/hedcoiowa/videos/new-roundabout-at-tower-terrace-and-n-center-point-rd/550647193126949/
Bettendorf, IA
Scott Co.
United States 		Forest Grove Dr. / Middle Rd.
(41.59010, -90.45966) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Multilane (2 Lane, 2x1 max) 		2023 https://www.ourquadcities.com/news/local-news/new-bettendorf-roundabout-opens-oct-18/ (video of partially complete roundabout here (it's the middle one) https://forestgrovedrive.com/ )
Bettendorf, IA
Scott Co.
United States 		Forest Grove Dr. / Championship Dr.
(41.59001, -90.46287) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Unknown 		2023 https://forestgrovedrive.com/ (first one in the video)
Bettendorf, IA
Scott Co.
United States 		Forest Grove Dr. / Competition Dr.
(41.59010, -90.45635) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Unknown 		2023 https://forestgrovedrive.com/ (third one in the video)
Sheldon, IA
O'Brien Co.
United States 		34th Ave. / Pavilion Way / Prairie Trail Rd.
(43.18342, -95.81593) 		Other
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane 		Originally just a turnaround for trucks in 2011; an unknown time later two roads were connected. No splitter island on north leg. https://www.nwestiowa.com/news/orange-city-opens-first-roundabout/article_32eaa2b4-63e7-11ee-bfc6-2baa523c8e84.html