Inventory of modern roundabouts in Iowa
Key
| CITY/COUNTY | LOCATION | DESCRIPTION | DATE/YEAR OPEN |
| Altoona Polk County |
Bass Pro Dr & Prairie Fire Blvd | Multi-lane new Bass Pro Shops development; only two legs open | 2009 |
| 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 |
| Ankeny Polk County |
NW 13th Street & NW Boulder Drive | In new residential development | 2005 |
| Ankeny Polk County |
SW White Birch Dr & SW Braeburn St | In new residential development | 2005 |
| Ankeny Polk County |
SW Snyder Blvd & SW Springfield | In new residential development | 2006 |
| Ankeny Polk County |
NW 5th Street & NW Abbie Drive | In new residential development | 2008 |
| Bettendorf 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 |
| Cedar Falls Black Hawk County |
Viking Road & Cedar Heights Drive | Hybrid dual/single-lane on new alignment; fourth approach may be added later | 2007 |
| Cedar Falls Black Hawk County |
Brandilynn Blvd & Prairie Pkwy | In new commercial development | 2009 |
| Clive Dallas County |
NW 156th Street & Boston Parkway | Hybrid dual/single-lane | 2002 |
| Clive Dallas County |
Berkshire Parkway & Sheridan Avenue | Three public approaches, fourth is private access | 2001 |
| Clive Dallas County |
Berkshire Parkway & Boston Parkway | In new residential development | 2005 |
| Coralville Johnson County |
1st Ave. & Holiday Road | Hybrid dual/single-lane with three approaches | 2002 |
| Coralville Johnson County |
12th Ave. & Forevergreen Road | North approach is middle school entrance | 2005 |
| Coralville Johnson County |
E. 9th St. & Quarry Road | Double-lane, three approaches, with hotel on east approach | 2006 |
| Coralville Johnson County |
Holiday Road & Corridor Way | South approach is commercial access | 2007 |
| Des Moines Polk County |
SW 28th St. & Rittenhouse Street & 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 H.S. | 2009 |
| Fort Dodge Webster County |
10th Avenue N & N 32nd Street | Replaced two "T" intersections | 2009 |
| Iowa City Johnson County |
Grand Avenue & S Grand Ave | Three approaches; on U of Iowa campus | 2007 |
| Iowa City Johnson County |
Kennedy Parkway & Meadowlark Dr | In new residential development | 2006 |
| 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 |
| Urbandale Dallas County |
NW 142nd Street & 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 |
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 |
| West Des Moines Dallas County |
West Access & W. Wells Fargo Trail | In new Wells Fargo development | 2006 |
| West Des Moines Dallas County |
"Blue Stem Circle"; 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 |
| CITY/COUNTY | LOCATION | DESCRIPTION | DATE/YEAR OPEN |
| Ankeny Polk County |
SW Cherry St & SW 11th St | Single-lane roundabout adjacent to new HS & MS | 2010 |
| Rural Buchanan County | C57 and V62 | Rural high speed | |
| Janesville Bremer County |
US 218 ramp terminals at C50 | Two potential roundabouts at ramp terminals | |
| Marion Linn County |
35th Street extension | Two-lane and one-lane roundabout new construction |
2010 |
| 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 pioneeer cemetery | (very old) |
Bettendorf Roundabout
Photo credit City of Bettendorf
Coralville Roundabout
Photo credit Hillary Isebrands
Clive Roundabout
Photo credit City of Clive
Grand Avenue Roundabout - Iowa City
Photo credit Bing Maps
