Roundabouts Database

29465 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
Cedar Rapids, IA
Linn Co.
United States 		Williams Blvd. / Dean Rd.
(41.94231, -91.74776) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Unknown 		2020 Year Completed estimated (2019-2020). https://www.kcrg.com/2020/09/18/cedar-rapids-woman-faces-traffic-charges-after-overturning-her-van-on-williams-boulevard/
Muscatine, IA
Muscatine Co.
United States 		Mulberry Ave. / 2nd St.
(41.42371, -91.04141) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane 		2020 https://www.youtube.com/watch?v=nyJfLuvBF_A
Holy Cross, IA
Dubuque Co.
United States 		US 52 / Holy Cross Rd.
(42.59513, -90.98652) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Single-Lane 		2019 https://www.dyersvillecommercial.com/news/roundabout-completed-outside-of-holy-cross/image_abf4ba03-bd15-5801-928e-39c6e5ff2bfb.html
Johnston, IA
Polk Co.
United States 		NW 70th Ave. / Peckham St.
(41.68821, -93.74458) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
0.0000 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		2019 Year Completed estimated (2018-2019).
Cedar Falls, IA
Black Hawk Co.
United States 		University Ave. / Greenhill Rd.
(42.50253, -92.47488) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
36.9817 		Other (At-Grade)
Single-Lane 		2017 http://www.cedarfalls.com/CivicAlerts.aspx?AID=922&ARC=2213 ICD estimated from Google Maps linework.
Iowa City, IA
Johnson Co.
United States 		Sycamore St. / Lehman Ave.
(41.62058, -91.51211) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
42.6720 		Other (At-Grade)
Single-Lane 		2015 Year Completed estimated (2014-2016).
Cedar Rapids, IA
Linn Co.
United States 		Stoney Point Rd. NW / E Ave. NW
(41.97858, -91.75502) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
 Other (At-Grade)
Single-Lane 		2019 https://kwwl.com/2019/08/16/stoney-point-rd-reopens-after-months-welcoming-cedar-rapids-4th-roundabout/
Burlington, IA
Des Moines Co.
United States 		West Ave. / W Burlington Ave.
(40.80061, -91.15269) 		Roundabout
Existing 		All-Way Yield
Unknown 		4 Approaches
0 Driveways
37.0678 		Other (At-Grade)
Single-Lane 		2017 Merging right-turn bypass lane on east leg. ICD estimated from Google Maps linework.
North Liberty, IA
Johnson Co.
United States 		North Liberty Rd. NE / Dubuque St. NE
(41.73359, -91.57568) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
42.7807 		Other (At-Grade)
Single-Lane 		2016 https://northlibertyiowa.org/2016/09/26/trail-closure-on-dubuque-street-trail-roundabout-nearing-completion/# ICD estimated from Google Maps linework.
Cedar Rapids, IA
Linn Co.
United States 		Kirkwood Blvd SW. / S School Access Rd.
(41.89988, -91.65658) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
42.6698 		Other (At-Grade)
Single-Lane 		2017 http://www.cedar-rapids.org/local_government/departments_g_-_v/public_works/kirkwood_blvd_sw.php ICD estimated from Google Maps linework.
Davenport, IA
Scott Co.
United States 		Jersey Ridge Rd. / E 67th St. (Veterans Memorial Pkwy.)
(41.58937, -90.53928) 		Roundabout
Existing 		All-Way Yield
Unknown 		4 Approaches
0 Driveways
39.3036 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		2018 ICD estimated from Google Maps linework.
Dubuque, IA
Dubuque Co.
United States 		N Grandview Ave. / University Ave.
(42.49832, -90.68817) 		Roundabout
Existing 		All-Way Yield
Unknown 		4 Approaches
0 Driveways
29.9396 		Other (At-Grade)
Single-Lane 		2018 ICD estimated from Google Maps linework.
Dubuque, IA
Dubuque Co.
United States 		N Grandview Ave. / Delhi St. / Grace St.
(42.49682, -90.68791) 		Roundabout
Existing 		All-Way Yield
Unknown 		5 Approaches
0 Driveways
20.2537 		Other (At-Grade)
Single-Lane 		2016 ICD estimated from Google Maps linework.
Marion, IA
Linn Co.
United States 		7th Ave. / 7th St.
(42.03326, -91.60272) 		Roundabout
Existing 		All-Way Yield
Unknown 		4 Approaches
0 Driveways
39.0322 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		2016 ICD estimated from Google Maps linework.
Marion, IA
Linn Co.
United States 		7th Ave. / (future road) / (future road)
(42.03286, -91.58364) 		Roundabout
Existing 		All-Way Yield
Unknown 		4 Approaches
0 Driveways
44.3550 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		2016 Elliptical shape. ICD estimated from Google Maps linework.
Marion, IA
Linn Co.
United States 		29th Ave. / 35th St.
(42.05043, -91.57448) 		Roundabout
Existing 		All-Way Yield
Unknown 		4 Approaches
0 Driveways
22.1714 		Other (At-Grade)
Single-lane w/ Traversable Central Island 		2016 Year Completed estimated (2016-2017). ICD estimated from Google Maps linework.
Cedar Rapids, IA
Linn Co.
United States 		Tower Rd. SW / Training Rd.
(41.91459, -91.65437) 		Roundabout
Existing 		All-Way Yield
Unknown 		4 Approaches
0 Driveways
33.7725 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		2011 Year Completed estimated (2010-2011). ICD estimated from Google Maps linework.
Fort Dodge, IA
Webster Co.
United States 		1st Ave. S / 2nd Ave. S / 6th St.
(42.50361, -94.18974) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
38.7420 		Other (At-Grade)
Single-Lane 		2015 https://www.messengernews.net/progress-2017/progress-2017-business/2017/02/crosstown-connector-completed/ ICD estimated from Google Maps linework.
Fort Dodge, IA
Webster Co.
United States 		1st Ave. S / S 12th St.
(42.50480, -94.18270) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
25.5340 		Other (At-Grade)
Single-Lane 		2016 https://www.messengernews.net/progress-2017/progress-2017-business/2017/02/crosstown-connector-completed/ ICD estimated from Google Maps linework.
Cedar Falls, IA
Black Hawk Co.
United States 		University Ave. / Waterloo Rd.
(42.51304, -92.42713) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
37.8558 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		2017 http://www.cedarfalls.com/CivicAlerts.aspx?AID=1072 ICD estimated from Google Maps linework.
Cedar Falls, IA
Black Hawk Co.
United States 		University Ave. / Holiday Rd.
(42.51304, -92.43342) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
38.7362 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		2017 http://www.cedarfalls.com/CivicAlerts.aspx?AID=1072 ICD estimated from Google Maps linework.
Cedar Falls, IA
Black Hawk Co.
United States 		University Ave. / Boulder Dr.
(42.51312, -92.43821) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
48.4202 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		2017 http://www.cedarfalls.com/CivicAlerts.aspx?AID=1072 ICD estimated from Google Maps linework.
Cedar Falls, IA
Black Hawk Co.
United States 		University Ave. / SR 27-SR 58 SB Ramps
(42.51311, -92.44391) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
37.8558 		Freeway Ramps (Grade-Separated)
Multilane (2 Lane, unspecified) 		2018 Raindrop shape. http://www.cedarfalls.com/CivicAlerts.aspx?AID=1072 ICD estimated from Google Maps linework.
Cedar Falls, IA
Black Hawk Co.
United States 		University Ave. / SR 27-SR 58 NB Ramps
(42.51311, -92.44268) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
48.4202 		Freeway Ramps (Grade-Separated)
Multilane (2 Lane, unspecified) 		2018 Raindrop shape. http://www.cedarfalls.com/CivicAlerts.aspx?AID=1072 ICD estimated from Google Maps linework.
Cedar Falls, IA
Black Hawk Co.
United States 		University Ave. / Cedar Heights Dr.
(42.50672, -92.41123) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
36.0987 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		2018 http://www.cedarfalls.com/CivicAlerts.aspx?AID=1072 ICD estimated from Google Maps linework.
Cedar Falls, IA
Black Hawk Co.
United States 		Prairie Pkwy. / Prairie View Rd.
(42.49038, -92.43412) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
53.7219 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		2013 Year Completed estimated (2011-2015). Fist completed only with north and south legs, then east and west legs added 2015-2016. ICD estimated from Google Maps linework.
North Liberty, IA
Johnson Co.
United States 		N Front St. / Penn St.
(41.75206, -91.59801) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
2 Driveways
32.0763 		Other (At-Grade)
Single-Lane 		2019 Completed Fall 2019. ICD estimated from Google Maps linework.
North Liberty, IA
Johnson Co.
United States 		N Front St. / N Bend Dr.
(41.75695, -91.59798) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
47.2199 		Other (At-Grade)
Single-Lane 		2019 Completed September 2019. The adjacent dead-end road to the west has been extended up to connect with Front Street at a 90-degree angle across from the existing commercial entrance drive on the east side of Front Street. In the NW quadrant of the roundabout, the farm field site has been redeveloped as a new elementary school. ICD estimated from Google Maps linework.
Coralville, IA
Johnson Co.
United States 		Commerce Dr. / Commercial Park
(41.69560, -91.61393) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
39.2389 		Other (At-Grade)
Single-Lane 		2014 ICD estimated from Google Maps linework.
Coralville, IA
Johnson Co.
United States 		12th Av. / Holiday Rd.
(41.69491, -91.58287) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
21.4032 		Other (At-Grade)
Single-lane w/ Traversable Central Island 		2015 Year Completed estimated (2014-2016). ICD estimated from Google Maps linework.
Coralville, IA
Johnson Co.
United States 		E 7th St. / E 2nd Ave.
(41.67892, -91.56378) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
43.7092 		Other (At-Grade)
Single-Lane 		2019 Opened to traffic August 2019. East leg will re-open October 2019; north leg open to traffic summer 2020. ICD estimated from Google Maps linework.
Coralville, IA
Johnson Co.
United States 		Oakdale Blvd. / Jones Blvd.
(41.70758, -91.61387) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
37.4483 		Other (At-Grade)
Single-Lane 		2015 Year Completed estimated (2014-2016). ICD estimated from Google Maps linework.
Pleasant Hill, IA
Polk Co.
United States 		NE Rising Sun Dr. / NE 70 St.
(41.59524, -93.46732) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
34.8341 		Other (At-Grade)
Single-Lane 		2019 https://www.pleasanthilliowa.org/projects ICD estimated from Google Maps linework.
Altoona, IA
Polk Co.
United States 		Adventureland Dr. / 34th Ave. SW
(41.65855, -93.50315) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
39.2615 		Other (At-Grade)
Unknown 		2018 ICD estimated from Google Maps linework.
Altoona, IA
Polk Co.
United States 		NW Tallgrass Pkwy. / Prairie Fire NW
(41.65368, -93.50710) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
30.3407 		Other (At-Grade)
Single-Lane 		2018 ICD estimated from Google Maps linework.
Ames, IA
Story Co.
United States 		University Blvd. / Airport Rd. / Oakwood Rd.
(41.99735, -93.63922) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
44.3798 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		2016 Free-flow right-turn bypass lane on east leg. ICD estimated from Google Maps linework.
Ames, IA
Story Co.
United States 		University Blvd. (530th Ave.) / Cottonwood Rd.
(41.99366, -93.63921) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
1 Driveways
37.2812 		Other (At-Grade)
Single-Lane 		2016 ICD estimated from Google Maps linework.
Ames, IA
Story Co.
United States 		University Blvd. (530th Ave.) / Collaboration Pl.
(41.99049, -93.63918) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
1 Driveways
36.3954 		Other (At-Grade)
Single-Lane 		2016 ICD estimated from Google Maps linework.
Cedar Rapids, IA
Linn Co.
United States 		Johnson Ave. NW / Wiley Blvd. NW
(41.97123, -91.72580) 		Roundabout
Existing 		All-Way Yield
Rectangular Rapid Flashing Beacon (RRFB) 		4 Approaches
0 Driveways
22.1990 		Other (At-Grade)
Single-Lane 		2018 http://www.cedar-rapids.org/local_government/departments_g_-_v/public_works/johnson_avenue_nw.php ICD estimated from Google Maps linework.
Grimes, IA
Polk Co.
United States 		NE Beaverbrooke Blvd. / NE Heritage Dr.
(41.70101, -93.78190) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
57.0699 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		2017 Year Completed estimated (2016-2017). ICD estimated from Google Maps linework.
Grimes, IA
Polk Co.
United States 		NE Beaverbrooke Blvd. / NE Park Dr. / NE Park St.
(41.70201, -93.78755) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
41.0184 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		2017 Year Completed estimated (2016-2017). ICD estimated from Google Maps linework.
Johnston, IA
Polk Co.
United States 		NW 70th Ave. / NW 107th St. (NE Edgewood Dr.)
(41.68834, -93.76342) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
39.2433 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		2016 ICD estimated from Google Maps linework.
Johnston, IA
Polk Co.
United States 		NW 70th Ave. / NW 100th St.
(41.68834, -93.75589) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
42.8109 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		2017 Year Completed estimated (2016-2017). ICD estimated from Google Maps linework.
Johnston, IA
Polk Co.
United States 		NW 100 St. / NW 68th Ave.
(41.68333, -93.75594) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
36.5705 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		2017 Year Completed estimated (2016-2017). ICD estimated from Google Maps linework.
Johnston, IA
Polk Co.
United States 		NW 100th St. / Ashton Dr.
(41.67978, -93.75594) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
36.5725 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		2017 ICD estimated from Google Maps linework.
Johnston, IA
Polk Co.
United States 		NW 100th St. / Newport Vista Dr.
(41.67795, -93.75591) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
35.6815 		Other (At-Grade)
Multilane (2 Lane, unspecified) 		2017 ICD estimated from Google Maps linework.
Marion, IA
Linn Co.
United States 		6th Ave. / 15th St.
(42.03243, -91.59397) 		Roundabout
Existing 		All-Way Yield
None 		4 Approaches
0 Driveways
 Other (At-Grade)
Single-Lane 		2019 Year Completed estimated (2018-2019).
Muscatine, IA
Muscatine Co.
United States 		Cedar St. / Logan St.
(41.43575, -91.06473) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
27.7570 		Other (At-Grade)
Single-Lane 		2015 Year Completed estimated (2014-2016). ICD estimated from Google Maps linework.
Ottumwa, IA
Wapello Co.
United States 		Wapello St. / Albia Rd. / N Ferry St.
(41.00821, -92.43239) 		Roundabout
Existing 		All-Way Yield
None 		3 Approaches
0 Driveways
36.9516 		Other (At-Grade)
Unknown 		2019 https://www.facebook.com/cityofottumwa/posts/10157576935583243?comment_id=10157577136173243&comment_tracking=%7B"tn"%3A"R"%7D ICD estimated from Google Maps linework.
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.