Roundabouts

Roundabouts in Iowa

 

Modern Roundabouts in Iowa, in use


CITY/COUNTY LOCATION DESCRIPTION YEAR OPEN
Linn County 7th Ave/7th Street 2016
Marion
Linn County
7th Ave/27th Street 2016
Marion
Linn County
Royal Oak Ridge / Stags Leap Lane Mini-roundabout
Marion
Linn County
29th Ave/35th Street Mini-roundabout 2016
Altoona
Polk County
Bass Pro Dr & Prairie Fire Blvd Multi-lane in new commercial development; only two legs open 2009
Cedar Rapids in Linn County Kirkwood Blvd & 76th Ave. SW Replacing all-way stop 2017
Ankeny
Polk County
Irvinedale Dr & Vintage Pkwy/Polk City Dr Replacing all-way stop 2012-2013
Ankeny
Polk County
SW Campustown Ct New construction on DMACC campus 2012-2013
Ankeny
Polk County
SW Cherry St & SW 11th St New roadway adjacent to new HS & MS 2011
Ankeny Polk County NW 5th Street & NW Abbie Drive New residential development 2008
Ankeny
Polk County
SW Snyder Blvd & SW Springfield New residential development 2006
Ankeny
Polk County
NW 13th Street & NW Boulder Drive New residential development 2005
Ankeny
Polk County
SW White Birch Dr & SW Braeburn St New residential development 2005
Ankeny
Polk County
SW Goodwin St & SW Springfield Dr One of three in a new residential development 2004
Ankeny
Polk County
SW Somersby Blvd & SW Springfield Dr One of three in a new residential development 2004
Ankeny
Polk County
SW Somersby Blvd & SW 46th St One of three in a new residential development 2004
Bettendorf in Scott County Middle Road & 53rd Avenue Designed to accommodate multiple lanes in the future 2002
Rural Black Hawk County Independence Ave (Iowa 281) & Raymond Rd (V49) First high-speed, rural roundabout in Iowa; 55mph approaches 2008
Rural Buchanan County C57 and V62 Rural, high-speed intersection; replaced two-way stop intersection 2012
Cedar Falls
Black Hawk County
Ridgeway Ave & Chancellor Dr Realigned north approach, replaced T-intersection 2011
Cedar Falls
Black Hawk County
Brandilynn Blvd & Prairie Pkwy In new commercial development 2009
Cedar Falls
Black Hawk County
Viking Road & Cedar Heights Drive One-lane/two-lane hybrid on new alignment; north leg may be added later 2007
Cedar Rapids CC
Linn County
Kirkwood CC Entrance & Training Rd One-lane/two-lane hybrid 2011
Clive
Dallas County
Berkshire Parkway & Boston Parkway In new residential development 2005
Clive
Dallas County
NW 156th Street & Boston Parkway Combination dual/single-lane 2002
Clive
Dallas County
Berkshire Parkway & Sheridan Avenue Three public approaches, fourth is private access 2001
Coralville in Johnson County Ridgeway Dr & University Ct New 3-leg intersection 2013
Coralville in Johnson County University Pkwy & University Ct New 3-leg intersection 2013
Coralville in Johnson County Heartland Dr & Heartland Place New 5-leg intersection 2013
Coralville in Johnson County Holiday Road & Corridor Way South approach is commercial access 2007
Coralville
Johnson County
E 9th St & Quarry Road Double-lane, three approaches, with hotel on east approach 2006
Coralville
Johnson County
12th Ave & Forevergreen Rd North approach is middle school entrance 2005
Coralville in Johnson County 1st Ave & Holiday Rd Hybrid dual/single-lane with three approaches 2002
Des Moines
Polk County
SW 28th St & Rittenhouse St & Gannett Ave In the Airport Business Park, just south of Army Post Road 2000
Rural Fayette County Iowa 3 & Iowa 187 Rural, high-speed, adjacent to Starmont HS 2009
Fort Dodge
Webster County
10th Ave N & N 32nd St Replaced two "T" intersections 2009
Gilbert
Story County
E23 & Matthews Dr Between three schools; replacing all-way stop 2013
Iowa City
Johnson County
Grand Ave & S Grand Ave Three approaches; on U of Iowa campus 2007
Iowa City
Johnson County
Kennedy Parkway & Meadowlark Dr In new residential development 2006
Janesville
Bremer County
US 218 southbound ramp terminal at C50 Diamond interchange ramp terminal with 5th leg for frontage road 2012
Janesville
Bremer County
US 218 northbound ramp terminal at C50 Diamond interchange ramp terminal 2012
Johnston
Polk County
NW 62nd Ave & Pioneer Campus 1 of 4 on 62nd Ave corridor 2012
Johnston
Polk County
NW 62nd Ave Corridor 2 of 4 on 62nd Ave corridor 2012
Johnston
Polk County
NW 62nd Ave Corridor 3 of 4 on 62nd Ave corridor 2012
Johnston
Polk County
NW 62nd Ave Corridor 4 of 4 on 62nd Ave corridor 2012
Marion
Linn County
35th St & Tower Terrace Two-lane and one-lane roundabout on new road 2011
Marion
Linn County
Tower Terrace & Alburnett Rd New intersection on Alburnett Rd 2013
Mason City /
Cerro Gordo County
Mason City High School Reconfigured intersection adjacent to new entrance 2013
Mount Vernon
Linn County
US 30 & Iowa 1 Replaced 4-way stop 2013
Mount Vernon
Linn County
US 30 & 10th Ave S Three-approaches replacement for 1-way stop 2013
Oskaloosa
Mahaska County
Orchard Ave & Old Pella Rd/Old 163 Includes pedestrian underpass and open center 2003
Ottumwa
Wapello County
S Jct US 34 & US 63 Three approaches; includes right turn bypass lanes 2006
Peosta
Dubuque County
Peosta St & NICC entrance Single-lane, new entrance into college 2012
Urbandale
Dallas County
NW 142nd St & Douglas Parkway Double-lane; south approach realigned to create four approaches 2004
Waverly
Bremer County
1st Ave NW & 8th St NW Replaced "T" intersection at entry to Wartburg College 2004/5
West Des Moines
Dallas County
Blue Stem Cir; Village View Dr & S Prairie View Dr New residential/commercial development on former Ponderosa Golf Course 2007
West Des Moines
Dallas County
Stagecoach Dr & S Crescent Way Intersection of two private residential streets on former Ponderosa Golf Course 2007
West Des Moines
Dallas County
S Crescent Way & S Ridgefield Way & Fairway Dr Intersection of two private residential streets on former Ponderosa Golf Course 2007
West Des Moines
Dallas County
West Access & W Wells Fargo Trail In new Wells Fargo development 2006
West Des Moines
Dallas County
W Wells Fargo Trail & Wells Fargo Terrace In new Wells Fargo development 2005
West Des Moines
Dallas County
W Wells Fargo Trail & E Wells Fargo Terrace In new Wells Fargo development 2005

Planned modern roundabouts in Iowa

CITY/COUNTY LOCATION DESCRIPTION YEAR OPEN
Hiawatha
Linn County
Tower Terrace Road / Barnsley Lane
Marion
Linn County
Tower Terrace Road / 44th Street

Other circular intersections, not modern roundabouts

CITY/COUNTY LOCATION DESCRIPTION YEAR OPEN
Altoona Polk County 10th Avenue SE & 15th Street SE Traffic calming circle Dec. 16, 2005
Clive Polk County Clark Street & 101st Street Traffic calming circle 2003
Clive
Polk County
Clark Street & 102nd Street Traffic calming circle 2003
Des Moines
Polk County
Buchanan St & E 12th St. Two-way stop (E-W) traffic calming circle ?
Iowa City
Johnson County
Westbury Drive & Eastbury Drive Olde Town private commercial development with no deflection or yield signs 2006
Sioux City
Woodbury County
Larsen Park Rd Large (~400') Rotary with Park
center
?
Sioux City
Woodbury County
Larsen Park Rd & Floyd Blvd Oval-shaped large Rotary ?
Spillville
Winneshiek County
Main St & Church St Old intersection around a central island (old)
Urbandale
Dallas County
Tanglewood Drive & 159th Street One of four traffic-calming circular islands
new residential development
2003
Urbandale
Dallas County
Tanglewood Drive & Walnut Hills Drive/162nd One of four traffic-calming circular islands
new residential development
2003
Urbandale
Dallas County
Alpine Drive & 160th Street One of four traffic-calming circular islands
new residential development
2003
Urbandale
Dallas County
Alpine Drive & 162nd Street One of four traffic-calming circular islands
new residential development
2003
Urbandale
Dallas County
Quail Ridge & 138th Traffic calming circle
new residential development
2003
Urbandale
Dallas County
Quail Ridge & 140th Traffic calming circle
new residential development
2003
West Des Moines
Dallas County
Wistful Dr. & So. 79th St. Circular island in a new residential development 1999
West Des Moines
Polk County
Glen Oaks Way Three-approach residential circle ?
West Des Moines
Dallas County
Intersection on new private commercial streets, near 64th & Wistful. Circular island with no entry deflection; on private roads
new commercial development east of Jordan Creek
2006
West Des Moines
Dallas County
Mills Civic Pkwy (335th St/F68) & 88th St (X Ave) Old, stop-controlled circular intersection around a pioneer cemetery (very old)