Roundabouts Database Index

28782 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
Reykjavik, Höfuðborgarsvæðið Iceland	Baejarhals / Halsabraut (64.11885, -21.79844)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 27.1092	Other (At-Grade) Single-Lane		ICD estimated from Google Maps linework.
Reykjavik, Höfuðborgarsvæðið Iceland	Baejarhals / Tunguhals (64.11722, -21.78862)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 25.0254	Other (At-Grade) Single-Lane		ICD estimated from Google Maps linework.
Reykjavik, Höfuðborgarsvæðið Iceland	Baejarhals / Sudurlandsvegur Ramps (64.11401, -21.78316)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 42.2352	Freeway Ramps (Grade-Separated) Single-Lane		ICD estimated from Google Maps linework.
Reykjavik, Höfuðborgarsvæðið Iceland	Hadegismoar / Sudurlandsvegur Ramps (64.11384, -21.77687)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 30.2427	Freeway Ramps (Grade-Separated) Single-Lane		ICD estimated from Google Maps linework.
Reykjavik, Höfuðborgarsvæðið Iceland	Rte 1 / Rte 413 (64.10478, -21.77439)	Roundabout Existing	All-Way Yield Unknown	3 Approaches 0 Driveways 44.3356	Other (At-Grade) Multilane (2 Lane, unspecified)		ICD estimated from Google Maps linework.
Reykjavik, Höfuðborgarsvæðið Iceland	Rte 1 / Nordlingavad / Vegbrekkur (64.10164, -21.75941)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 45.9056	Other (At-Grade) Multilane (2 Lane, unspecified)		ICD estimated from Google Maps linework.
Kópavogsbær, Höfuðborgarsvæðið Iceland	Arnarnesvegur / Rte 41 Ramps (64.09517, -21.88820)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 89.2236	Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified)		ICD estimated from Google Maps linework.
Reykjavik, Höfuðborgarsvæðið Iceland	Mimisbrunnur / Iounnarbrunnar (64.13592, -21.74221)	Roundabout Existing	All-Way Yield Unknown	3 Approaches 0 Driveways 22.4035	Other (At-Grade) Single-Lane		ICD estimated from Google Maps linework.
Reykjavik, Höfuðborgarsvæðið Iceland	Mimisbrunnur / Skyggnisbraut (64.13682, -21.73933)	Roundabout Existing	All-Way Yield Unknown	3 Approaches 0 Driveways 33.3436	Other (At-Grade) Single-Lane		ICD estimated from Google Maps linework.
Reykjavik, Höfuðborgarsvæðið Iceland	Skyggnisbraut / Urdarbrunnur (64.13578, -21.73416)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways	Other (At-Grade) Single-Lane
Reykjavik, Höfuðborgarsvæðið Iceland	Vikurvegur / Fossaleynir (64.14600, -21.77369)	Roundabout Existing	All-Way Yield Unknown	3 Approaches 0 Driveways 16.6663	Other (At-Grade) Single-Lane		ICD estimated from Google Maps linework.
Reykjavik, Höfuðborgarsvæðið Iceland	Vikurvegur / Mosavegur / Strandvegur / Korpullsstadavegur (64.15118, -21.77156)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 35.4093	Other (At-Grade) Single-Lane		ICD estimated from Google Maps linework.
Reykjavik, Höfuðborgarsvæðið Iceland	Borgavegur / Soleyjarimi (64.15041, -21.79498)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 37.4932	Other (At-Grade) Single-Lane		ICD estimated from Google Maps linework.
Reykjavik, Höfuðborgarsvæðið Iceland	Borgavegur / Spongin (64.14953, -21.78816)	Roundabout Existing	All-Way Yield Unknown	3 Approaches 0 Driveways 33.8491	Other (At-Grade) Single-Lane		ICD estimated from Google Maps linework.
Reykjavik, Höfuðborgarsvæðið Iceland	Spongin parking lot (64.15008, -21.78784)	Roundabout Existing	All-Way Yield Unknown	3 Approaches 0 Driveways 33.3277	Other (At-Grade) Single-Lane		ICD estimated from Google Maps linework.
Reykjavik, Höfuðborgarsvæðið Iceland	Borgavegur / Langirimi (64.14737, -21.78501)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 25.5190	Other (At-Grade) Single-Lane		ICD estimated from Google Maps linework.
Reykjavik, Höfuðborgarsvæðið Iceland	Hallsvegur / Langirimi (64.14056, -21.79653)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 29.1717	Other (At-Grade) Single-Lane		ICD estimated from Google Maps linework.
Reykjavik, Höfuðborgarsvæðið Iceland	Hallsvegur / Fjallkonuvegur (64.13983, -21.78927)	Roundabout Existing	All-Way Yield Unknown	3 Approaches 0 Driveways 32.2981	Other (At-Grade) Single-Lane		ICD estimated from Google Maps linework.
Hamatonbetsu Town, Hokkaido Esashi Japan	Rte 275 / Rte 84 (45.12453, 142.36011)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 36.0000	Other (At-Grade) Single-Lane	2020	This is the second roundabout in northern Japan.
Kaminokuni, Hokkaido Hiyama Japan	Rte 228 / Rte 5 (41.80526, 140.12339)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 40.0000	Other (At-Grade) Single-Lane	2019	This is the first roundabout in north Japan.
Kitahiroshima City, Hokkaido Japan	Nishinosato (42.99590, 141.51999)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways	Other (At-Grade) Single-Lane	2023	https://www.sorachi.pref.hokkaido.lg.jp/kk/skk/flink/133492.html
Ciudad de Holguín, Holguín Holguín Cuba	Avenida XX Aniversario / (unknown) (20.89262, -76.24193)	Unknown Existing	Unknown Unknown	4 Approaches 0 Driveways	Other (At-Grade) Multilane (2 Lane, unspecified)
Gomel City Council, Homel Gomel' Belarus	E271-M5 / praspiekt Kasmanaŭtaŭ / Mahilioŭskaja St. (52.46411, 30.94644)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways	Other (At-Grade) Multilane (2 Lane, unspecified)
Bergen, Hordaland Bergen Norway	E39 (Hardangervegen) / Fv582 (Troldhaugvegen) / E39-Fv580 (Fritz C. Riebers veg) Ramps (60.32502, 5.33752)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways	Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified)
Bergen, Hordaland Bergen Norway	Hesthaugvegen / (parking) / (parking) (60.46353, 5.31759)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways	Other (At-Grade) Single-Lane
Bergen, Hordaland Bergen Norway	Fv540 (Fyllingsdalsveien - Hjalmar Brantings Vei) / Krokatjønnveien / Sælenveien (60.34831, 5.28189)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways	Other (At-Grade) Multilane (2 Lane, unspecified)
Bergen, Hordaland Bergen Norway	Tertnesveien / Åsamyrane / E16-E39 (Åsaneveien) Ramps (60.45581, 5.31902)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways	Freeway Ramps (Grade-Separated) Single-Lane
Bergen, Hordaland Bergen Norway	Michael Krohns gate / Solheimsgaten (60.37619, 5.33719)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways	Other (At-Grade) Single-Lane
Bergen, Hordaland Bergen Norway	Nygårdsgaten / Solheimsgaten / Møllendalsveien / E39 Ramps (60.37933, 5.33486)	Roundabout Existing	All-Way Yield None	5 Approaches 0 Driveways	Freeway Ramps (Grade-Separated) Single-Lane
Hradec Králové, Hradec Králové Hradec Králové Czechia	třída Edvarda Beneše / Palachova / Štefánikova (50.19044, 15.84140)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways	Other (At-Grade) Single-Lane		Elliptical shaped.
Lida, Hrodna Lidskiy rayon Belarus	E85 / R89 / M11 / Varshavskaya (53.87640, 25.27277)	Other Existing	Unknown None	4 Approaches 0 Driveways	Other (At-Grade) Multilane (2 Lane, unspecified)
Grodno City Council, Hrodna Grodno Belarus	vulica Maksima Horkaha / vulica Dubko / buĺvar Lieninskaha Kamsamolu (53.69947, 23.81940)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways	Other (At-Grade) Multilane (2 Lane, unspecified)
Grodno City Council, Hrodna Grodno Belarus	Magistral'naya / Rumlevskiy prospekt / Kasmanautau praspiekt / Kosmonavtov prospekt (53.67424, 23.86118)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways	Other (At-Grade) Multilane (2 Lane, unspecified)
Kozina, Hrpelje-Kozina Slovenia	SR 409 / A1 Ramps / Obvozna cesta (45.61047, 13.93613)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways	Freeway Ramps (Grade-Separated) Single-Lane
Kozina, Hrpelje-Kozina Slovenia	E61-SR 7 (Bazoviška cesta) / Obvozna cesta (45.60892, 13.93200)	Roundabout Existing	All-Way Yield None	3 Approaches 1 Driveways	Other (At-Grade) Single-Lane
Deva, Hunedoara Romania	Piața Arras [Bulevardul 22 Decembrie / Bulevardul Decebal / Strada Ciprian Porumbescu / Strada Duiliu Zamfirescu] (45.87365, 22.90861)	Roundabout Existing	All-Way Yield None	5 Approaches 0 Driveways	Other (At-Grade) Multilane (2 Lane, unspecified)
Kobe, Hyogo Pref. Japan	Minatojima-minamimachi 6chome (34.65781, 135.22191)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways	Other (At-Grade) Single-Lane		On Port Island.
Kobe, Hyogo Pref. Japan	Karatodai 2 chome (34.79043, 135.21372)	Other Existing	Unknown None	4 Approaches 0 Driveways	Other (At-Grade) Single-Lane
Council Bluffs, IA Pottawattamie Co. United States	Greenview Rd. / Eastern Hills Dr. / State Orchard Rd. (41.23982, -95.78866)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane	2020	https://www.wowt.com/video/2020/10/01/eastern-hills-drive-project-finally-finished-council-bluffs-pm/
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/
Dyersville, IA Delaware Co. United States	CR X49 (332nd Ave.) / W 1st Ave. / 210th St. (42.48441, -91.14450)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane	2020	https://www.dyersvillecommercial.com/news/new-roundabout-officially-open/image_90cf973c-23eb-59eb-9a68-62a9bf4de883.html
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/
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).
North Liberty, IA Johnson Co. United States	St. Andrews Dr. / Alexander Way (41.73776, -91.62789)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 42.6717	Other (At-Grade) Single-Lane	2020
North Liberty, IA Johnson Co. United States	Kansas Ave. / St. Andrews Dr. (41.73785, -91.63707)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 47.2440	Other (At-Grade) Single-Lane	2019
Tiffin, IA Johnson Co. United States	E Marengo Rd. (US 6) / Park Rd. (41.70604, -91.64711)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 53.3400	Other (At-Grade) Single-Lane	2019	Designed for expansion to two-lane roundabout. Year Completed estimated (2019-2020).
Coralville, IA Johnson Co. United States	E 9th St. / E 2nd Ave. (41.68169, -91.56306)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane	2020	https://www.coralville.org/887/E-9th-Street
Dubuque, IA Dubuque Co. United States	US 52 (SW Arterial - Seippel Rd.) / Chesterfield Dr. / US 20 EB ramps (42.47403, -90.75987)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 0.0000	Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified)	2020	https://www.telegraphherald.com/news/tri-state/article_25dde05e-920f-5330-8d6f-356d16812f2d.html
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.
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.
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.
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.
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.
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	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.
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.
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.
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.
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)	Roundabout Existing	Unknown Unknown	4 Approaches 0 Driveways 58.0190	Other (At-Grade) Single-Lane	2005	Opened December 16, 2005. ICD estimated from Google Maps linework.