| HWY 66 over Small Natural Stream | Poor | 21.0 ft | 737 | 1935 |
| HWY 66 over W.fk Grand River | Poor | 213.9 ft | 737 | 1935 |
| FM over Stream | Poor | 44.0 ft | 349 | 1968 |
| Old Ia HWY 25 over Small Stream | Poor | 35.1 ft | 289 | 1934 |
| FM over W Fork Grand River | Poor | 253.9 ft | 219 | 1956 |
| FM over Trail | Poor | 140.1 ft | 190 | 1940 |
| FM over W Fk Grand River | Poor | 179.1 ft | 190 | 1979 |
| FM over Stream | Poor | 32.2 ft | 170 | 1953 |
| FM over E Fork Grand River | Poor | 204.1 ft | 120 | 1957 |
| FM over W Fork Grand | Poor | 127.0 ft | 120 | 1967 |
| FM over Plum Creek | Poor | 44.0 ft | 120 | 1954 |
| FM over Plum Creek | Poor | 128.0 ft | 120 | 1954 |
| FM over Platte River | Poor | 155.8 ft | 79 | 1955 |
| FM over Stream | Poor | 24.9 ft | 71 | 1941 |
| FM over Branch Crooked Creek | Poor | 32.2 ft | 71 | 1957 |
| Local over W Fk Grand River | Poor | 73.2 ft | 60 | 1930 |
| FM over Sand Creek | Poor | 32.2 ft | 60 | 1939 |
| FM over W Fork Grand River | Poor | 148.0 ft | 60 | 1950 |
| FM over Platte River | Poor | 128.0 ft | 60 | 1955 |
| FM over Sun Valley Creek | Poor | 62.0 ft | 50 | 1961 |
| Local over Mid Fk Grand River | Poor | 154.9 ft | 45 | 1988 |
| Local over Stream | Poor | 47.9 ft | 40 | 1969 |
| Local over Stream | Poor | 78.1 ft | 40 | 1967 |
| FM over Platte River | Poor | 182.1 ft | 40 | 1962 |
| Local over Stream | Poor | 33.1 ft | 40 | 1948 |
| Local over Stream | Poor | 24.9 ft | 34 | 1947 |
| Local over Sun Valley Creek | Poor | 61.0 ft | 34 | 1975 |
| Local over Stream | Poor | 20.0 ft | 34 | 1975 |
| Local over Stream | Poor | 32.2 ft | 34 | 1963 |
| Local over Br Middle Fk Grand River | Poor | 30.8 ft | 29 | 1940 |
| Local over Stream | Poor | 43.0 ft | 29 | 1993 |
| Local over Stream | Poor | 24.9 ft | 29 | 1948 |
| Local over Platte River | Poor | 179.1 ft | 29 | 1955 |
| FM over E Fork Grand River | Poor | 127.0 ft | 29 | 1957 |
| Local over Stream | Poor | 32.2 ft | 29 | 1940 |
| Local over East Big Creek | Poor | 70.9 ft | 26 | 1951 |
| Local over E Fk Grand River | Poor | 122.0 ft | 26 | 1961 |
| Local over M Fk Grand River | Poor | 62.0 ft | 20 | 1981 |
| Local over M Fk Grand River | Poor | 90.9 ft | 20 | 1963 |
| Local over Gooseberry Creek | Poor | 65.0 ft | 20 | 1965 |
| Local RD over Lotts Creek | Poor | 119.1 ft | 20 | 1900 |
| FM over E Fork Grand River | Poor | 50.9 ft | 20 | 1959 |
| 200th ST over Gooseberry Creek | Poor | 65.0 ft | 20 | 1940 |
| Local over Unnamed Stream | Poor | 28.9 ft | 20 | 1957 |
| Local over Wolf Creek | Poor | 32.2 ft | 20 | 1940 |
| Local over Stream | Poor | 21.0 ft | 20 | 1988 |
| Local over Stream | Poor | 26.9 ft | 20 | 1960 |
| Local over Stream | Poor | 59.1 ft | 15 | 1993 |
| Local over Stream | Poor | 65.0 ft | 15 | 1916 |
| Local over Small Creek | Poor | 64.0 ft | 15 | 1982 |
| Local over Stream | Poor | 24.0 ft | 15 | 1930 |
| Local over E Fk Grand River | Poor | 89.9 ft | 15 | 1970 |
| FM over E Fk Grand River | Poor | 128.0 ft | 15 | 1958 |
| Local over Stream | Poor | 43.0 ft | 15 | 1930 |
| Local over Walnut Creek | Poor | 65.0 ft | 15 | 1956 |
| Local over Sand Creek | Poor | 65.9 ft | 15 | 1958 |
| FM over East Creek | Poor | 94.2 ft | 11 | 1958 |
| Local over Lotts Creek | Poor | 64.0 ft | 11 | 1961 |
| Local over E Fk Grand River | Poor | 102.0 ft | 11 | 1957 |
| Local over Stream | Poor | 21.0 ft | 11 | 1959 |
| FM over Lotts Creek | Poor | 179.1 ft | 11 | 1957 |
| Local over Stream | Poor | 41.0 ft | 11 | 1949 |
| Local over Stream | Poor | 44.0 ft | 11 | 1957 |
| Local over Lotts Creek | Poor | 58.1 ft | 11 | 1940 |
| Local over Small Stream | Poor | 21.0 ft | 11 | 1951 |
| Local over Walnut Creek | Poor | 81.0 ft | 11 | 1964 |
| Local over Crooked Creek | Poor | 85.0 ft | 11 | 1950 |
| Local over Stream | Poor | 33.1 ft | 11 | 1943 |
| Local over Stream | Poor | 24.9 ft | 11 | 1957 |
| Local over Stream | Poor | 47.9 ft | 5 | 1953 |
| Local over Stream | Poor | 21.0 ft | 5 | 1949 |
| Local over E Big Creek | Poor | 113.8 ft | 5 | 1958 |
| FM over Stream | Poor | 63.0 ft | 5 | 1955 |
| Local over Stream | Poor | 21.0 ft | 5 | 1953 |
| Local over Stream | Poor | 24.0 ft | 5 | 1946 |
| Local over E Fk Grand River | Poor | 122.0 ft | 5 | 1962 |
| Local over W Fk Grand River | Poor | 87.9 ft | 5 | 1940 |
| Local over Lotts Creek | Poor | 47.9 ft | 5 | 1952 |
| Local over Lotts Creek | Poor | 40.0 ft | 5 | 1949 |
| Local over Gooseberry Creek | Poor | 48.9 ft | 5 | 1956 |
| Local over Stream | Poor | 46.9 ft | 5 | 1952 |
| Local over Stream | Poor | 33.1 ft | 5 | 1956 |
| Local over Stream | Poor | 25.9 ft | 5 | 1954 |
| Local over Stream | Poor | 24.9 ft | 5 | 1954 |
| Local over E Fork Grand River | Poor | 48.9 ft | 5 | 1969 |
| Local over E Fk Grand River | Poor | 65.0 ft | 5 | 1940 |
| Local over Sun Valley Creek | Poor | 44.0 ft | 5 | 1980 |
| Local over Stream | Poor | 61.0 ft | 5 | 1950 |
| Ia 2 over East Fork Grand River | Fair | 159.1 ft | 1,750 | 1985 |
| US 169 over Stream | Fair | 21.0 ft | 1,730 | 1938 |
| US 169 over Walnut Creek | Fair | 128.0 ft | 1,730 | 1985 |
| Ia 25 over Stream | Fair | 22.0 ft | 1,250 | 1934 |
| HWY 66 over Crooked Creek | Fair | 174.9 ft | 737 | 1985 |
| FM over Platte River | Fair | 204.1 ft | 379 | 1969 |
| FM over Stream | Fair | 24.9 ft | 379 | 2005 |
| US 169 over Middle Fork Grand River | Fair | 146.0 ft | 370 | 1989 |
| FM over E Big Creek | Fair | 103.0 ft | 349 | 1973 |
| FM over E Fork Grand River | Fair | 179.1 ft | 338 | 2003 |
| Old Ia HWY 25 over Small Stream | Fair | 24.9 ft | 289 | 1934 |
| FM over Grand River | Fair | 180.1 ft | 270 | 1973 |
| FM over Lotts Creek | Fair | 128.0 ft | 270 | 1973 |
| FM over W Fk Grand River | Fair | 255.9 ft | 270 | 1979 |
| FM over Walnut Creek | Fair | 141.1 ft | 270 | 1992 |
| FM over Small Stream | Fair | 21.0 ft | 270 | 2001 |
| FM over Sun Valley Creek | Fair | 83.0 ft | 190 | 1994 |
| 210th Street over Small | Fair | 24.9 ft | 170 | 1945 |
| FM over Lotts Creek | Fair | 128.9 ft | 159 | 1966 |
| FM over Fletchall Creek | Fair | 28.9 ft | 120 | 1993 |
| FM over Stream | Fair | 45.9 ft | 120 | 1976 |
| Local over Stream | Fair | 24.9 ft | 110 | 1998 |
| FM over Branch Of Lotts Creek | Fair | 24.0 ft | 89 | 1993 |
| 210th AVE over West Fork Grand River | Fair | 127.0 ft | 67 | 1957 |
| P68 over Stream | Fair | 28.9 ft | 60 | 2004 |
| FM over Stream | Fair | 43.0 ft | 60 | 1991 |
| FM over E Fork Grand River | Fair | 153.9 ft | 50 | 1957 |
| Local over Crooked Creek | Fair | 131.9 ft | 50 | 1957 |
| Local over Elk Creek | Fair | 21.0 ft | 45 | 1986 |
| Local over Wolf Creek | Fair | 91.9 ft | 40 | 1936 |
| FM over Sand Creek | Fair | 103.0 ft | 40 | 1986 |
| FM over Stream | Fair | 25.9 ft | 34 | 1963 |
| FM over W Fork Grand River | Fair | 179.1 ft | 34 | 1966 |
| Local over West Fork Grand River | Fair | 169.0 ft | 34 | 1984 |
| Local over Small Stream | Fair | 24.0 ft | 34 | 1920 |
| Local over Lotts Creek | Fair | 71.9 ft | 29 | 1965 |
| Local over Stream | Fair | 40.0 ft | 29 | 1930 |
| Local over E Fk Grand River | Fair | 61.0 ft | 29 | 1989 |
| Local over Stream | Fair | 28.9 ft | 29 | 1978 |
| FM over Platte River | Fair | 204.1 ft | 29 | 1961 |
| Local over Stream | Fair | 33.1 ft | 26 | 1953 |
| Local over Stream | Fair | 58.1 ft | 26 | 2003 |
| Local over Platte River | Fair | 140.1 ft | 26 | 1969 |
| FM over Lotts Creek | Fair | 76.1 ft | 25 | 1941 |
| Local over Stream | Fair | 34.1 ft | 20 | 1992 |
| Local over Stream | Fair | 33.1 ft | 20 | 1946 |
| Local over Stream | Fair | 32.2 ft | 15 | 1954 |
| Local over Lotts Creek | Fair | 80.1 ft | 15 | 1963 |
| Local over Lotts Creek | Fair | 107.0 ft | 15 | 1990 |
| FM over E Fork Grand River | Fair | 207.0 ft | 15 | 1961 |
| Local over Stream | Fair | 21.0 ft | 15 | 1941 |
| Local over Stream | Fair | 24.9 ft | 15 | 1932 |
| Local over Lotts Creek | Fair | 127.0 ft | 15 | 1978 |
| Local over Goosebury Creek | Fair | 49.9 ft | 15 | 1956 |
| Local over Turkey Creek | Fair | 54.1 ft | 15 | 2004 |
| Local over Sand Creek | Fair | 83.0 ft | 15 | 1972 |
| Local over Small Stream | Fair | 33.1 ft | 15 | 1990 |
| Local over Stream | Fair | 60.0 ft | 11 | 1994 |
| Local over Stream | Fair | 34.1 ft | 11 | 2002 |
| Local over Stream | Fair | 43.0 ft | 11 | 1996 |
| Local over E Fk Grand River | Fair | 122.0 ft | 11 | 1958 |
| Local over Walnut Creek | Fair | 40.0 ft | 11 | 1946 |
| Local over Stream | Fair | 24.0 ft | 11 | 1941 |
| FM over Stream | Fair | 40.0 ft | 5 | 1955 |
| Local over Stream | Fair | 39.0 ft | 5 | 1936 |
| Local over Sun Valley Creek | Fair | 41.0 ft | 5 | 2003 |
| Local over E Fk Grand River | Fair | 128.9 ft | 5 | 1936 |
| Local over Crooked Creek | Fair | 60.0 ft | 5 | 1952 |
| Ia 2 over Walnut Creek | Good | 132.9 ft | 1,750 | 1988 |
| Ia 2 over Lotts Creek | Good | 123.0 ft | 1,750 | 1985 |
| Ia 2 over E Fork Lotts Creek | Good | 87.9 ft | 1,550 | 1985 |
| Ia 2 over Drainage Ditch | Good | 39.0 ft | 1,550 | 1976 |
| Ia 2 over W Fork Of Grand River | Good | 226.0 ft | 1,180 | 1976 |
| Ia 2 over Drainage Ditch | Good | 92.8 ft | 1,150 | 1988 |
| US 169 over Stream | Good | 21.0 ft | 1,020 | 1977 |
| US 169 over Sun Valley Creek | Good | 28.9 ft | 1,020 | 1994 |
| US 169 over Drainage Ditch | Good | 22.0 ft | 1,020 | 1937 |
| Ia 2 over Platte River | Good | 208.0 ft | 870 | 1975 |
| US 169 over Middle Fork Grand River | Good | 138.1 ft | 500 | 2021 |
| P14 over Platte River | Good | 222.1 ft | 289 | 2018 |
| FM over Walnut Creek | Good | 21.0 ft | 270 | 1992 |
| FM over Crooked Creek | Good | 90.9 ft | 120 | 2001 |
| FM over Walnut Creek | Good | 87.9 ft | 110 | 1991 |
| J13 Rinngoldunion over Stream | Good | 48.9 ft | 100 | 2018 |
| FM over Branch Of Lotts Creek | Good | 83.0 ft | 89 | 2009 |
| FM over Gooseberry Creek | Good | 21.0 ft | 79 | 1993 |
| County RD over Platte River | Good | 179.1 ft | 75 | 1983 |
| FM over W Fork Grand River | Good | 215.9 ft | 71 | 1985 |
| Local over W Fork Of Grand River | Good | 275.9 ft | 60 | 2009 |
| FM over Crooked Creek | Good | 128.0 ft | 60 | 1992 |
| J20 130th ST over Stream | Good | 24.9 ft | 50 | 2020 |
| 310th ST over Fletchall Creek | Good | 79.1 ft | 45 | 2021 |
| 130th ST over Plum Creek | Good | 143.0 ft | 45 | 2011 |
| 270th ST over Middle Fork Grand River | Good | 92.8 ft | 40 | 2020 |
| FM over Gooseberry Creek | Good | 103.0 ft | 35 | 2009 |
| Local over W Fork Grand River | Good | 215.9 ft | 34 | 1986 |
| 200th Street over Brush Creek | Good | 150.9 ft | 34 | 2021 |
| 190th ST over Wolf Creek | Good | 24.9 ft | 34 | 2023 |
| Local over Stream | Good | 60.0 ft | 29 | 2001 |
| FM over Lotts Creek | Good | 24.9 ft | 29 | 2000 |
| 190th ST over Crooked Creek | Good | 101.0 ft | 29 | 2023 |
| Local over Turkey Creek | Good | 132.9 ft | 29 | 2009 |
| Ringgold-union ST over E Fork Grand River | Good | 101.0 ft | 29 | 2023 |
| 255th AVE over Stream | Good | 24.9 ft | 29 | 2017 |
| 250th ST over Ruder Creek | Good | 33.1 ft | 26 | 2014 |
| P20 (125th Ave) over Stream | Good | 25.9 ft | 26 | 2013 |
| Local over Gooseberry Creek | Good | 20.0 ft | 26 | 2006 |
| Local over Walnut Creek | Good | 77.1 ft | 26 | 2006 |
| 190th ST over Turkey Creek | Good | 101.0 ft | 26 | 2023 |
| SR P54 250th Av over Stream | Good | 52.2 ft | 26 | 2011 |
| Local over W Fk Grand River | Good | 143.0 ft | 26 | 1996 |
| Local over Stream | Good | 89.9 ft | 20 | 1998 |
| Local over Stream | Good | 87.9 ft | 20 | 1999 |
| 260th ST over Ruder Creek | Good | 28.9 ft | 15 | 2007 |
| Local over Lotts Creek | Good | 103.0 ft | 15 | 1994 |
| 180th AVE over Plum Creek | Good | 83.0 ft | 15 | 2020 |
| Local over M Fk Grand River | Good | 103.0 ft | 11 | 2009 |
| Local over Stream | Good | 25.9 ft | 11 | 1993 |
| Local over Stream | Good | 76.1 ft | 11 | 1996 |
| Local over W Fk Grand River | Good | 128.9 ft | 11 | 2005 |
| 115th ST over Trib To Sand Creek | Good | 83.0 ft | 11 | 2021 |
| Local over Plum Creek | Good | 25.9 ft | 11 | 1997 |
| J20 130th ST over Side Ditch-sunvalleycree | Good | 24.9 ft | 10 | 2002 |
| 310th AVE over Stream | Good | 25.9 ft | 5 | 2017 |
| 300th Street over Stream | Good | 25.9 ft | 5 | 2011 |
| 300th AVE over Lotts Creek | Good | 74.1 ft | 5 | 2013 |
| Local over Plum Creek | Good | 128.0 ft | 5 | 1997 |