| Lancer AVE over Small Natural Stream | Poor | 24.9 ft | 1,011 | 1925 |
| Walnut AVE over Wapsipinicon River | Poor | 152.9 ft | 462 | 1940 |
| 430th over Creek | Poor | 38.1 ft | 403 | 1953 |
| 320th over Fish Creek | Poor | 39.0 ft | 226 | 1965 |
| 320th over Little Cedar River | Poor | 169.0 ft | 226 | 1931 |
| 390th over Rock Creek | Poor | 32.2 ft | 216 | 1973 |
| 480th over Small Stream | Poor | 37.1 ft | 216 | 1984 |
| Lawrence ST over Drainage | Poor | 22.0 ft | 167 | 1950 |
| Rampart AVE over Small Stream | Poor | 49.9 ft | 59 | 1974 |
| 440th over Deer Creek | Poor | 100.1 ft | 59 | 1950 |
| Primrose AVE over Little Cedar River | Poor | 77.1 ft | 33 | 1908 |
| 400th over Beaver Creek | Poor | 104.0 ft | 29 | 1915 |
| Timber AVE over Wapsipinicon River | Poor | 60.0 ft | 29 | 1959 |
| Primrose AVE over Creek | Poor | 38.1 ft | 20 | 1950 |
| 420th over Burr Oak Creek | Poor | 29.9 ft | 15 | 1966 |
| Valley AVE over Creek | Poor | 21.0 ft | 11 | 1960 |
| US 218 over Otter Creek | Fair | 128.0 ft | 2,530 | 1970 |
| US 218 & Ia 9 over Spring Creek | Fair | 21.0 ft | 2,460 | 1975 |
| US 218 & Ia 9 over Spring Creek | Fair | 27.9 ft | 2,460 | 1967 |
| US 218 over Spring Creek | Fair | 21.0 ft | 2,030 | 1975 |
| Lancer AVE over Big Cedar River | Fair | 319.9 ft | 1,905 | 2002 |
| Ia 9 over Wapsipinicon River | Fair | 188.0 ft | 1,780 | 1979 |
| Old Ia 105 over Turtle Creek | Fair | 63.0 ft | 746 | 1930 |
| Glass AVE over Rock Creek | Fair | 115.2 ft | 678 | 1977 |
| 465th over Drainage | Fair | 21.0 ft | 619 | 1935 |
| Underwood AVE over Creek | Fair | 75.1 ft | 570 | 1970 |
| Underwood AVE over Creek | Fair | 27.9 ft | 570 | 1994 |
| Orchard RD over Spring Creek | Fair | 116.1 ft | 520 | 1980 |
| Primrose AVE over Burr Oak Creek | Fair | 55.1 ft | 501 | 1960 |
| School ST over Little Cedar River | Fair | 235.9 ft | 470 | 1986 |
| Walnut AVE over Small Stream | Fair | 34.1 ft | 462 | 1950 |
| 420th over Big Cedar River | Fair | 356.0 ft | 422 | 1963 |
| 430th over Beaver Creek | Fair | 42.0 ft | 403 | 1953 |
| 430th over Little Cedar River | Fair | 190.9 ft | 403 | 1984 |
| 470th over Wapsipinicon River | Fair | 116.1 ft | 295 | 1984 |
| Cameo AVE over Creek | Fair | 34.1 ft | 285 | 1919 |
| 480th over Big Cedar River | Fair | 294.0 ft | 216 | 1979 |
| March AVE over Spring Creek | Fair | 43.0 ft | 177 | 1966 |
| Lime Kiln RD over Big Cedar River | Fair | 246.1 ft | 167 | 1992 |
| Rampart AVE over Creek | Fair | 43.0 ft | 167 | 1967 |
| Zinnia AVE over Small Stream | Fair | 30.8 ft | 167 | 1984 |
| 460th ST over Wapsipinicon | Fair | 167.0 ft | 118 | 1983 |
| 340th over Spring Creek | Fair | 34.1 ft | 97 | 1927 |
| 340th over Creek | Fair | 38.1 ft | 78 | 2001 |
| Hickory AVE over Stream | Fair | 26.9 ft | 78 | 1987 |
| 450th over Little Cedar River | Fair | 153.9 ft | 78 | 1992 |
| Kirkwood AVE over Sugar Creek | Fair | 75.1 ft | 70 | 1974 |
| Underwood AVE over Creek | Fair | 78.1 ft | 59 | 1975 |
| 400th over Burr Oak Creek | Fair | 49.9 ft | 59 | 1975 |
| Noble AVE over Spring Creek | Fair | 32.2 ft | 59 | 1977 |
| Echo AVE over Otter Creek | Fair | 37.1 ft | 59 | 1930 |
| Noble AVE over Spring Creek | Fair | 55.1 ft | 49 | 2002 |
| Jersey AVE over Sugar Creek | Fair | 32.2 ft | 49 | 1975 |
| 385th over Small Stream | Fair | 23.0 ft | 49 | 1973 |
| Local over Big Cedar River | Fair | 226.0 ft | 49 | 1978 |
| 325th over Rock Creek | Fair | 80.1 ft | 44 | 1956 |
| 380th over Little Cedar River | Fair | 230.0 ft | 44 | 1979 |
| Echo AVE over Rock Creek | Fair | 30.8 ft | 44 | 1920 |
| 490th over Creek | Fair | 34.1 ft | 44 | 1992 |
| 480th ST over Creek | Fair | 24.0 ft | 44 | 1970 |
| Kirkwood AVE over Rock Creek | Fair | 62.0 ft | 39 | 1955 |
| Kirkwood AVE over Creek | Fair | 33.1 ft | 39 | 1930 |
| Jersey AVE over Rock Oak Creek | Fair | 128.0 ft | 34 | 1974 |
| Valley AVE over Creek | Fair | 24.0 ft | 33 | 1971 |
| 340th over Small Stream | Fair | 33.1 ft | 33 | 1974 |
| 390th over Wapsipinicon River | Fair | 66.9 ft | 33 | 1995 |
| 350th over Spring Creek | Fair | 29.9 ft | 33 | 1973 |
| Cameo AVE over Rock Creek | Fair | 78.1 ft | 33 | 1974 |
| 450th over Small Stream | Fair | 30.8 ft | 33 | 1974 |
| 490th ST over Creek | Fair | 32.2 ft | 33 | 1984 |
| 410th over Burr Oak Creek | Fair | 32.2 ft | 30 | 1975 |
| Noble AVE over Creek | Fair | 29.9 ft | 29 | 1974 |
| 325th over Small Stream | Fair | 38.1 ft | 29 | 1985 |
| 400th over Creek | Fair | 43.0 ft | 29 | 1978 |
| 385th over Burr Oak Creek | Fair | 34.1 ft | 29 | 1954 |
| Quail AVE over Creek | Fair | 50.9 ft | 29 | 1977 |
| Cameo AVE over Creek | Fair | 24.9 ft | 26 | 1920 |
| Foothill AVE over Rock Creek | Fair | 103.0 ft | 26 | 1981 |
| 450th over Small Stream | Fair | 48.9 ft | 26 | 1974 |
| State Line ST over Little Cedar River | Fair | 203.1 ft | 26 | 1985 |
| Echo AVE over Creek | Fair | 84.0 ft | 25 | 1989 |
| 340th over Creek | Fair | 25.9 ft | 20 | 1972 |
| Balsam AVE over Creek | Fair | 32.2 ft | 20 | 1930 |
| 400th over Soap Creek | Fair | 24.9 ft | 15 | 1992 |
| 395th over Burr Oak Creek | Fair | 33.1 ft | 15 | 1920 |
| Dancer AVE over Rock Creek | Fair | 33.1 ft | 11 | 1925 |
| Ia 9 over Cedar River | Good | 370.1 ft | 2,990 | 1992 |
| Ia 9 over Sugar Creek | Good | 47.9 ft | 2,990 | 2013 |
| US 218 over Turtle Creek | Good | 132.9 ft | 2,530 | 1987 |
| US 218 over Stream | Good | 73.2 ft | 2,530 | 1986 |
| US 218 over Stream | Good | 38.1 ft | 2,530 | 1967 |
| Ia 9 over Rock Creek | Good | 83.0 ft | 2,340 | 1992 |
| US 218 over Stream | Good | 21.0 ft | 2,260 | 1979 |
| US 218 over Stream | Good | 24.9 ft | 2,030 | 1932 |
| Ia 9 over Little Cedar River | Good | 279.9 ft | 1,900 | 1979 |
| Broad ST over Small Natural Stream | Good | 35.1 ft | 1,489 | 2019 |
| Ia 9 over Soap Creek | Good | 123.0 ft | 1,350 | 1978 |
| Foothill AVE over Big Cedar River | Good | 292.0 ft | 1,021 | 1950 |
| Monument AVE over Small Stream | Good | 78.1 ft | 786 | 1987 |
| T 40 Monument AVE over Creek | Good | 70.2 ft | 786 | 2022 |
| 105 450th ST over Deer Creek | Good | 92.8 ft | 756 | 2023 |
| Old Ia 105 over Cedar River | Good | 304.1 ft | 746 | 1989 |
| Hickory AVE over Cedar River | Good | 376.0 ft | 403 | 1959 |
| S70 Balsam AVE over Rock Creek | Good | 69.9 ft | 354 | 2022 |
| 370th over Sugar Creek | Good | 38.1 ft | 333 | 2004 |
| 385th over Sugar Creek | Good | 64.0 ft | 285 | 1998 |
| Hickory AVE over Drainage | Good | 48.9 ft | 196 | 1993 |
| 380th over Rock | Good | 75.1 ft | 177 | 1970 |
| Zinnia AVE over Deer Creek | Good | 117.1 ft | 167 | 1999 |
| March AVE over Spring Creek | Good | 23.0 ft | 138 | 2009 |
| 319th over Creek | Good | 24.0 ft | 108 | 2003 |
| 370th over Drainage Ditch | Good | 30.8 ft | 108 | 1969 |
| Quail AVE over Creek | Good | 28.9 ft | 79 | 2000 |
| Noble AVE over Burr Oak Creek | Good | 33.1 ft | 79 | 1973 |
| 430th over Wapsipinicon River | Good | 42.0 ft | 78 | 1988 |
| 340th over Little Cedar River | Good | 249.0 ft | 70 | 1981 |
| Noble AVE over Creek | Good | 56.1 ft | 70 | 2001 |
| 410th ST over Beaver Creek | Good | 39.7 ft | 70 | 2018 |
| Echo AVE over Willow Creek | Good | 45.9 ft | 70 | 2005 |
| 500th over Wapsipinicon River | Good | 103.0 ft | 70 | 1977 |
| T34 Jersey AVE over Creek | Good | 29.9 ft | 69 | 2016 |
| 316th over Rock Creek | Good | 20.0 ft | 59 | 1990 |
| Shadow AVE over Burr Oak Creek | Good | 89.9 ft | 59 | 1974 |
| Quail AVE over Creek | Good | 45.9 ft | 59 | 2000 |
| Cameo AVE over Willow Creek | Good | 42.0 ft | 59 | 2005 |
| Epic AVE over Creek | Good | 42.0 ft | 59 | 1995 |
| 340th ST over Creek | Good | 28.9 ft | 49 | 2017 |
| Shadow AVE over Little Cedar River | Good | 191.9 ft | 49 | 1995 |
| T54 Timber AVE over Beaver Creek | Good | 33.8 ft | 49 | 2015 |
| Timber AVE over Beaver Creek | Good | 40.0 ft | 49 | 2004 |
| Timber AVE over Beaver Creek | Good | 71.9 ft | 49 | 2000 |
| 450th ST over Creek | Good | 29.2 ft | 49 | 2013 |
| 440th over Turtle Creek | Good | 90.9 ft | 49 | 1975 |
| 490th over Little Cedar River | Good | 128.0 ft | 49 | 1989 |
| 340th over Rock Creek | Good | 90.9 ft | 44 | 1977 |
| 380th over Burr Oak Creek | Good | 78.1 ft | 44 | 1975 |
| Local over Wapsipinicon River | Good | 52.2 ft | 44 | 2006 |
| Dancer AVE over Deer Creek | Good | 70.9 ft | 44 | 1979 |
| 480th ST over Little Cedar River | Good | 153.9 ft | 44 | 2004 |
| 480th ST over Drainage | Good | 33.1 ft | 44 | 1997 |
| 390th over Creek | Good | 33.1 ft | 39 | 1986 |
| Timber AVE over Beaver Creek | Good | 37.4 ft | 39 | 2012 |
| Valley AVE over Creek | Good | 29.9 ft | 33 | 2002 |
| Underwood AVE over Soap Creek | Good | 35.1 ft | 33 | 2005 |
| Echo AVE over Small Stream | Good | 38.1 ft | 33 | 1987 |
| Echo AVE over Creek | Good | 39.0 ft | 33 | 1998 |
| March AVE over Burr Oak Creek | Good | 64.0 ft | 33 | 1996 |
| T28 Hickory AVE over Turtle Creek | Good | 24.9 ft | 33 | 2013 |
| A19 Underwood AVE over Wapsipinicon River | Good | 80.1 ft | 33 | 2021 |
| 485th over Creek | Good | 49.9 ft | 33 | 1974 |
| Dancer AVE over Otter Creek | Good | 44.9 ft | 33 | 2009 |
| 380th over Soap Creek | Good | 36.1 ft | 29 | 2004 |
| 370th ST over Rock Creek | Good | 39.7 ft | 29 | 2018 |
| 405th over Little Cedar River | Good | 169.9 ft | 29 | 1974 |
| 320th ST over Creek | Good | 40.4 ft | 26 | 2020 |
| Underwood AVE over Creek | Good | 34.1 ft | 26 | 1997 |
| March AVE over Creek | Good | 29.2 ft | 26 | 2013 |
| Ocean AVE over Little Cedar River | Good | 32.2 ft | 21 | 2003 |
| A43 390th ST over Soap Creek | Good | 32.2 ft | 20 | 2017 |
| Noble AVE over Spring Creek | Good | 47.9 ft | 20 | 2008 |
| 465th over Wapsipinicon River | Good | 28.9 ft | 20 | 2010 |
| 490th over Wapsipinicon River | Good | 70.9 ft | 15 | 1997 |
| Windfall AVE over Creek | Good | 28.9 ft | 15 | 2012 |
| 330th over Fish Creek | Good | 78.1 ft | 11 | 1974 |
| 317th ST over Creek | Good | 39.7 ft | 11 | 2016 |
| 440th over Beaver Creek | Good | 28.9 ft | 11 | 2016 |
| 440th over Small Stream | Good | 47.9 ft | 11 | 1986 |