| Ia 9 over Mississippi River | Poor | 1629.9 ft | 2,200 | 1931 |
| FM over Branch Yellow River | Poor | 90.9 ft | 933 | 1999 |
| FM over Wexford Creek | Poor | 82.0 ft | 530 | 1970 |
| FM over Branch Yellow River | Poor | 22.0 ft | 373 | 1922 |
| Local RD over Br Miss River | Poor | 44.0 ft | 294 | 1978 |
| FM over Clear Creek | Poor | 50.9 ft | 200 | 1962 |
| Local over Village Creek | Poor | 45.9 ft | 157 | 1966 |
| FM over Paint Creek | Poor | 69.9 ft | 137 | 1957 |
| Local over Yellow River | Poor | 178.1 ft | 128 | 1954 |
| Local over Paint Creek | Poor | 155.8 ft | 120 | 1900 |
| FM over Branch Yellow River | Poor | 32.2 ft | 70 | 1959 |
| Local RD over Br Suttle Creek | Poor | 23.0 ft | 70 | 1900 |
| FM over Patterson Creek | Poor | 73.2 ft | 69 | 1938 |
| Local over Paint Creek | Poor | 111.9 ft | 60 | 1915 |
| Local RD over Teeple Creek | Poor | 52.2 ft | 60 | 1900 |
| Local over Silver Creek | Poor | 58.1 ft | 59 | 1958 |
| Local over Weyford Creek | Poor | 32.2 ft | 29 | 1960 |
| Local over Yellow River | Poor | 97.1 ft | 26 | 1900 |
| Local RD over Br Yellow River | Poor | 29.9 ft | 11 | 1941 |
| Local over Village Creek | Poor | 83.0 ft | 10 | 1900 |
| Local over Clear Creek | Poor | 71.9 ft | 5 | 1915 |
| Ia 9 over Stream | Fair | 23.0 ft | 3,670 | 1967 |
| Ia 76 over Yellow River | Fair | 387.1 ft | 2,370 | 1980 |
| Ia 26 over Indian Creek | Fair | 28.9 ft | 1,540 | 1935 |
| Ia 9 over Clear Creek | Fair | 33.1 ft | 1,500 | 1979 |
| Ia 51 over Branch Yellow River | Fair | 274.0 ft | 1,440 | 1967 |
| Ia 51 over N Fork Yellow River | Fair | 284.1 ft | 1,440 | 1967 |
| FM over Yellow River | Fair | 26.9 ft | 1,375 | 1962 |
| X52 over Cota Creek | Fair | 167.0 ft | 999 | 1987 |
| Local RD over Paint Creek | Fair | 195.9 ft | 982 | 1986 |
| Ia 76 over Stream | Fair | 26.9 ft | 980 | 1955 |
| Ia 76 over Mineral Creek | Fair | 53.8 ft | 980 | 1929 |
| Ia 76 over Upper Iowa River | Fair | 321.9 ft | 980 | 1955 |
| Ia 76 over Bear Creek | Fair | 277.9 ft | 980 | 1955 |
| FM over Yellow River | Fair | 202.1 ft | 933 | 1970 |
| Ia 76 over Waterloo Creek | Fair | 210.0 ft | 860 | 1929 |
| Ia 76 over Waterloo Creek | Fair | 211.9 ft | 860 | 1929 |
| FM over Village Creek | Fair | 299.9 ft | 707 | 1981 |
| X20 over Small | Fair | 41.0 ft | 690 | 2004 |
| FM over Branch Village Creek | Fair | 22.0 ft | 668 | 1947 |
| FM over Branch Upper Iowa River | Fair | 22.0 ft | 648 | 1930 |
| FM over Yellow River | Fair | 178.1 ft | 589 | 1968 |
| FM over Williams Creek | Fair | 131.9 ft | 589 | 1958 |
| FM over Branch Williams Creek | Fair | 30.8 ft | 589 | 1958 |
| FM over Branch Williams Creek | Fair | 30.8 ft | 589 | 1958 |
| FM over Branch Williams Creek | Fair | 30.8 ft | 589 | 1958 |
| FM over Branch Village Creek | Fair | 33.1 ft | 570 | 1925 |
| X52-greatrvr RD over Drainage Ditch | Fair | 23.0 ft | 570 | 2013 |
| FM over Oil Springs | Fair | 30.8 ft | 520 | 1980 |
| FM over Branch Williams Creek | Fair | 26.9 ft | 511 | 1958 |
| FM over Village Creek | Fair | 179.1 ft | 462 | 1958 |
| FM over Paint Creek | Fair | 128.0 ft | 442 | 1964 |
| FM over Branch Yellow River | Fair | 40.0 ft | 422 | 1959 |
| FM over Branch Yellow River | Fair | 153.9 ft | 422 | 1959 |
| FM over Branch Yellow River | Fair | 34.1 ft | 422 | 1959 |
| W60 Old Stage RD over Branch Yellow River | Fair | 25.9 ft | 422 | 1959 |
| Yellow River DR over Stream | Fair | 33.1 ft | 373 | 1967 |
| Dorchesterdr over Small Natural Stream | Fair | 26.9 ft | 344 | 1954 |
| Local over Waterloo Creek | Fair | 175.9 ft | 295 | 1983 |
| FM over Br Upper Iowa River | Fair | 34.1 ft | 196 | 1952 |
| FM over Paint Creek | Fair | 128.0 ft | 147 | 1990 |
| Dorchesterdr over Drainage Ditch | Fair | 36.1 ft | 137 | 1954 |
| FM over Paint Creek | Fair | 175.9 ft | 137 | 1957 |
| FM over Branch Paint Creek | Fair | 26.9 ft | 137 | 1960 |
| Local RD over Teeple Creek | Fair | 69.9 ft | 128 | 1960 |
| Local over Yellow River | Fair | 128.0 ft | 108 | 1953 |
| Local over Village Creek | Fair | 179.1 ft | 108 | 1974 |
| Local over Branch Village Creek | Fair | 24.0 ft | 108 | 1940 |
| Local over Br Yellow River | Fair | 26.9 ft | 88 | 1975 |
| Local over Lewis Jones Creek | Fair | 30.8 ft | 88 | 1975 |
| Yellow Rvr Sf over Paint Creek | Fair | 175.9 ft | 80 | 1960 |
| FM over French Creek | Fair | 132.9 ft | 79 | 1958 |
| Local over Branch Paint Creek | Fair | 23.0 ft | 78 | 1995 |
| Local over Paint Creek | Fair | 44.9 ft | 78 | 1961 |
| Local RD over Suttle Creek | Fair | 50.9 ft | 70 | 1996 |
| Local over Hickory Creek | Fair | 115.2 ft | 70 | 1982 |
| Local over Branch Paint Creek | Fair | 24.9 ft | 70 | 1996 |
| Local over Br Waterloo Creek | Fair | 57.1 ft | 70 | 1954 |
| FM over Branch Yellow River | Fair | 23.0 ft | 69 | 1958 |
| FM over Paint Creek | Fair | 70.9 ft | 69 | 2002 |
| FM over Upper Iowa River | Fair | 316.9 ft | 69 | 1974 |
| FM over Br Upper Iowa River | Fair | 20.0 ft | 69 | 1997 |
| FM over Bear Creek | Fair | 203.1 ft | 69 | 1954 |
| FM over Branch Bear Creek | Fair | 24.9 ft | 69 | 2000 |
| Local over Patterson Creek | Fair | 29.9 ft | 60 | 1941 |
| Local over Branch Paint Creek | Fair | 36.1 ft | 59 | 1995 |
| Local over Upper Iowa River | Fair | 273.0 ft | 59 | 1986 |
| Local RD over Br Yellow River | Fair | 32.2 ft | 49 | 1977 |
| Local over Yellow River | Fair | 33.1 ft | 49 | 1993 |
| Local RD over Hickory Creek | Fair | 22.0 ft | 49 | 1900 |
| Local RD over Cota Creek | Fair | 35.1 ft | 49 | 1991 |
| Local over Br Village Creek | Fair | 26.9 ft | 49 | 1962 |
| Local over Br Patterson Creek | Fair | 25.9 ft | 49 | 1977 |
| Local over Br Upper Iowa River | Fair | 44.9 ft | 49 | 1963 |
| Local over Br Upper Iowa River | Fair | 68.9 ft | 45 | 1956 |
| FM over Br Village Creek | Fair | 30.8 ft | 44 | 1961 |
| FM over Br Village Creek | Fair | 32.2 ft | 44 | 1988 |
| FM over Village Creek | Fair | 127.0 ft | 44 | 1966 |
| Local over Village Creek | Fair | 68.9 ft | 44 | 1965 |
| Local RD over Village Creek | Fair | 26.9 ft | 44 | 1965 |
| Local over Village Creek | Fair | 82.0 ft | 44 | 1960 |
| Luster Heights RD over Small Stream | Fair | 21.0 ft | 40 | 2000 |
| FM over Branch Yellow River | Fair | 68.9 ft | 39 | 1959 |
| Local RD over Yellow River | Fair | 151.9 ft | 39 | 1954 |
| Local RD over Br Yellow River | Fair | 55.1 ft | 39 | 1966 |
| Local over Village Creek | Fair | 40.0 ft | 39 | 1974 |
| Local over Branch Waterloo Creek | Fair | 40.0 ft | 39 | 1960 |
| Local over Paint Creek | Fair | 24.9 ft | 39 | 1997 |
| Local over Paint Creek | Fair | 68.9 ft | 33 | 1975 |
| Local over Village Creek | Fair | 221.1 ft | 33 | 1952 |
| Local over Clear Creek | Fair | 47.9 ft | 33 | 1995 |
| Local over Br Yellow River | Fair | 55.1 ft | 29 | 1964 |
| Local over Branch Yellow River | Fair | 128.0 ft | 29 | 1962 |
| Local RD over Trout Run | Fair | 40.0 ft | 29 | 1965 |
| Local over Br Patterson Creek | Fair | 112.9 ft | 29 | 1915 |
| Local over Patterson Creek | Fair | 56.1 ft | 29 | 1977 |
| Local over Penny Springs | Fair | 53.1 ft | 26 | 1985 |
| Local over Cota Creek | Fair | 41.0 ft | 26 | 1982 |
| Local over Small Stream | Fair | 37.1 ft | 26 | 1975 |
| Local over Br Clear Creek | Fair | 25.9 ft | 26 | 2001 |
| Bee RD over Waterloo Creek | Fair | 82.0 ft | 26 | 1960 |
| Local over Clear Creek | Fair | 41.0 ft | 26 | 1979 |
| FM over Village Creek | Fair | 40.0 ft | 25 | 1968 |
| Village Creek DR over Branch Village Creek | Fair | 69.9 ft | 25 | 1959 |
| Local over Br Waterloo Creek | Fair | 22.0 ft | 20 | 1953 |
| Local over Silver Creek | Fair | 69.9 ft | 15 | 1960 |
| Local over Br Upper Ia River | Fair | 44.0 ft | 15 | 1961 |
| Local over Br Upper Iowa River | Fair | 23.0 ft | 15 | 1937 |
| Local over Br Clear Creek | Fair | 43.0 ft | 15 | 1978 |
| Clear Creek Wma over Clear Creek | Fair | 67.9 ft | 15 | 1900 |
| Local over Br Yellow River | Fair | 41.0 ft | 11 | 1991 |
| Donahue RD over Paint Creek | Fair | 91.9 ft | 10 | 1900 |
| Local Farm Lane over Br Williams Creek | Fair | 41.0 ft | 5 | 1975 |
| Local over Paint Creek | Fair | 62.0 ft | 5 | 1976 |
| Local over Br Coon Creek | Fair | 41.0 ft | 5 | 1977 |
| Ia 51 over Hecher Creek | Good | 37.1 ft | 2,690 | 1967 |
| Ia 51 over Yellow River | Good | 245.1 ft | 2,690 | 1967 |
| Front ST over Clear Creek | Good | 111.9 ft | 2,418 | 1985 |
| Ia 76 over Drainage Ditch | Good | 22.6 ft | 2,370 | 1996 |
| Ia 26 over Enterprise Creek | Good | 179.1 ft | 1,540 | 1995 |
| Ia 26 over Upper Iowa River | Good | 261.2 ft | 1,540 | 1997 |
| Ia 26 over Hayes Lake | Good | 296.9 ft | 1,540 | 1998 |
| Ia 9 over Clear Creek | Good | 39.0 ft | 1,500 | 1978 |
| Ia 76 over Stream | Good | 65.9 ft | 860 | 1977 |
| Local over Upper Iowa River | Good | 306.1 ft | 690 | 2004 |
| 4th ST over Clear Creek | Good | 128.0 ft | 675 | 2003 |
| A26 Iowa River DR over Br Upper Iowa River | Good | 103.0 ft | 660 | 2018 |
| A26 Iowa River DR over Branch Iowa River | Good | 32.2 ft | 648 | 2022 |
| B25 Chestnut ST over Cota Creek | Good | 109.9 ft | 420 | 2021 |
| A26 Bearcreekdr over Bear Creek | Good | 229.7 ft | 310 | 2012 |
| Local RD over Village Creek | Good | 56.1 ft | 295 | 2003 |
| Green Valley RD over Village Creek | Good | 42.0 ft | 200 | 2018 |
| Makee Drive over Village Creek | Good | 45.9 ft | 157 | 2022 |
| Makee Drive over Village Creek | Good | 38.1 ft | 157 | 2022 |
| X6a Mays Prairie over French Creek | Good | 132.9 ft | 137 | 2018 |
| FM over Branch Yellow River | Good | 288.1 ft | 128 | 2001 |
| White Pine Road over Branch Paint Creek | Good | 55.1 ft | 128 | 2020 |
| South Road over Clear Creek | Good | 130.2 ft | 121 | 2017 |
| N Folk Hollow RD over Norfolk Creek | Good | 129.9 ft | 120 | 2017 |
| Linton DR over Branch Yellow River | Good | 128.0 ft | 100 | 2005 |
| FM over Yellow River | Good | 229.3 ft | 100 | 2010 |
| FM over Br Yellow River | Good | 39.0 ft | 98 | 2001 |
| Yellow Rvr RD over Norfolk Creek | Good | 143.0 ft | 98 | 2015 |
| Local over Paint Creek | Good | 128.0 ft | 97 | 1992 |
| Local over Village Creek | Good | 56.1 ft | 97 | 2003 |
| FM over Branch Village Creek | Good | 56.1 ft | 88 | 2003 |
| Swebakken RD over Paint Creek | Good | 128.0 ft | 80 | 2004 |
| FM over Yellow River | Good | 243.1 ft | 79 | 2001 |
| Ferris Mill RD over Br Upper Iowa River | Good | 41.0 ft | 70 | 2017 |
| Local over Upper Iowa River | Good | 223.1 ft | 70 | 1991 |
| FM over Paint Creek | Good | 128.0 ft | 69 | 1990 |
| Brady DR over Br Paint Creek | Good | 29.5 ft | 60 | 2012 |
| Local over Paint Creek | Good | 78.1 ft | 60 | 2004 |
| Smithfield Drive over Branch Yellow River | Good | 230.6 ft | 59 | 2021 |
| Local over Paint Creek | Good | 29.9 ft | 59 | 2002 |
| Local over Branch Upper Iowa River | Good | 78.1 ft | 59 | 2003 |
| Williams Crk RD over Williams Creek | Good | 40.7 ft | 49 | 2015 |
| FM over Upper Iowa River | Good | 291.0 ft | 49 | 1994 |
| Bethel RD over Williams Creek | Good | 35.1 ft | 44 | 2015 |
| Local over Hickory Creek | Good | 128.0 ft | 39 | 1982 |
| Local RD over Lewis Jones Creek | Good | 30.8 ft | 39 | 2002 |
| Irish Hollow RD over Br Upper Iowa River | Good | 73.5 ft | 39 | 2013 |
| English Bench Road over Br Upper Iowa River | Good | 35.1 ft | 39 | 2020 |
| Local over Village Creek | Good | 38.1 ft | 33 | 2005 |
| Local over Drainage | Good | 38.1 ft | 30 | 2006 |
| Local over Branch Yellow River | Good | 23.0 ft | 29 | 2001 |
| Local RD over Teeple Creek | Good | 20.0 ft | 29 | 1988 |
| Local over Small Stream | Good | 21.0 ft | 29 | 2000 |
| Living Springs RD over Yellow River | Good | 149.9 ft | 26 | 2022 |
| Local over Paint Creek | Good | 58.1 ft | 26 | 2001 |
| Local over Waterloo Creek | Good | 128.0 ft | 25 | 2006 |
| Local RD over Br Yellow River | Good | 25.9 ft | 20 | 2002 |
| Doehler DR over Br Village Creek | Good | 23.0 ft | 20 | 2000 |
| Local RD over Br Lewis Jones Creek | Good | 38.1 ft | 20 | 2002 |
| Local over Br Lewis Jones Creek | Good | 56.1 ft | 20 | 2003 |
| Local over Bear Creek | Good | 128.0 ft | 20 | 2000 |
| Mineral Creek D over Mineral Creek | Good | 46.9 ft | 15 | 2013 |