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Inventory of modern roundabouts in Iowa



View Iowa Roundaboutsin a larger map

Key

Modern roundabout
Residential roundabout
Planned roundabout
Other circular intersections


Modern Roundabouts in Iowa, in use
CITY/COUNTY LOCATION DESCRIPTION DATE/YEAR OPEN
Altoona
Polk County
Bass Pro Dr & Prairie Fire Blvd
Multi-lane in new commercial development; only two legs open
2009
Ankeny
Polk County
Irvindale 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
Kossuth 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 DATE/YEAR
OPEN
Cedar Rapids in Linn County
Kirkwood Blvd & 76th Ave. SW
Replacing all-way stop
unknown
Other circular intersections, not modern roundabouts
CITY/COUNTY LOCATION DESCRIPTION DATE/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)

Bettendorf Roundabout
Bettendorf Roundabout
Photo credit Bing Maps
Coralville Roundabout
Coralville Roundabout
Photo credit Hillary Isebrands
Clive Roundabout
Clive Roundabout
Photo credit City of Clive
Grand Avenue roundabout in Iowa City
Grand Avenue Roundabout - Iowa City
Photo credit Bing Maps