| S Grimmell RD over Raccoon River | Poor | 334.0 ft | 1,572 | 1947 |
| 330 TH / E63 over Drainage Ditch 9-13 | Poor | 44.9 ft | 379 | 1970 |
| 222nd ST over West Beaver Creek | Poor | 25.9 ft | 300 | 1921 |
| A AVE over Dd 150-86 | Poor | 43.0 ft | 293 | 1964 |
| 170 TH / E26 over Drainage Ditch 110 | Poor | 32.2 ft | 229 | 1963 |
| J AVE / P14 over Greenbrier Creek | Poor | 78.1 ft | 190 | 1971 |
| A AVE / N58 over Raccoon River | Poor | 324.1 ft | 131 | 1950 |
| 290 TH / E57 over Snake Creek | Poor | 44.9 ft | 108 | 1959 |
| 290 TH / E57 over Willow Creek | Poor | 77.1 ft | 89 | 1953 |
| 230 TH over Stream | Poor | 22.0 ft | 46 | 1957 |
| 200 TH over Creek | Poor | 53.1 ft | 35 | 1956 |
| X AVE over Little Beaver Creek | Poor | 23.0 ft | 30 | 1924 |
| 240 TH over Buttricks Creek | Poor | 128.0 ft | 26 | 1957 |
| H AVE over Dd 102 | Poor | 33.1 ft | 26 | 1977 |
| 180 TH over Stream | Poor | 102.0 ft | 26 | 1958 |
| 180 TH over Dd #102 | Poor | 33.1 ft | 26 | 1978 |
| 140 TH over Stream | Poor | 77.1 ft | 26 | 1956 |
| 120 TH over Stream | Poor | 101.0 ft | 26 | 1957 |
| W AVE over Creek | Poor | 36.1 ft | 21 | 1900 |
| 200 TH over Stream | Poor | 40.0 ft | 21 | 1965 |
| 100 TH over Lost Grove Creek | Poor | 23.0 ft | 21 | 1914 |
| K AVE over Hardin Creek | Poor | 78.1 ft | 21 | 1959 |
| 300 TH over Greenbrier Creek | Poor | 77.1 ft | 15 | 1957 |
| 320 TH over Stream | Poor | 77.1 ft | 11 | 1956 |
| Farm Drive over Buttricks Creek | Poor | 58.1 ft | 10 | 1900 |
| US 30 over Hardin Creek | Fair | 196.9 ft | 4,230 | 1957 |
| US 30 over Buttrick Creek | Fair | 184.1 ft | 4,230 | 1957 |
| US 30 over Stream | Fair | 24.9 ft | 3,700 | 1956 |
| Ia 4 over Hardin Creek | Fair | 133.9 ft | 2,710 | 1978 |
| Ia 4 over North Raccoon River | Fair | 350.1 ft | 2,210 | 1983 |
| 235 TH / E53 over Hardin Creek | Fair | 175.9 ft | 1,047 | 1993 |
| E53 237th ST over Raccoon River | Fair | 458.0 ft | 916 | 1912 |
| E18 over Small Stream | Fair | 21.0 ft | 597 | 1985 |
| 130 TH over Drainage Ditch #110 | Fair | 22.0 ft | 528 | 1996 |
| S AVE / P33 over Buttricks Creek | Fair | 103.0 ft | 399 | 1971 |
| 330 TH / E63 over Willow Creek | Fair | 105.0 ft | 379 | 1970 |
| A AVE / N58 over Willow Creek | Fair | 77.1 ft | 358 | 1964 |
| D AVE / N65 over Cedar Creek | Fair | 107.0 ft | 338 | 1955 |
| W AVE / P46 over West Beaver Creek | Fair | 42.0 ft | 329 | 1924 |
| 190 TH / E33 over Hardin Creek | Fair | 102.0 ft | 270 | 1961 |
| 170 TH / E26 over West Buttricks Creek | Fair | 74.1 ft | 229 | 1963 |
| Quest Ave/p30 over Deadbrier Creek | Fair | 77.1 ft | 210 | 1969 |
| 330 TH / E63 over Mosquito Creek | Fair | 33.1 ft | 199 | 1978 |
| J AVE / P14 over Raccoon River | Fair | 342.8 ft | 199 | 1952 |
| 190 TH / E33 over Drainage Ditch 430 | Fair | 20.0 ft | 199 | 1959 |
| Eaton AVE / E33 over Raccoon River | Fair | 320.9 ft | 199 | 1993 |
| R AVE / P30 over Small Stream | Fair | 24.0 ft | 190 | 1973 |
| 330 TH / E63 over Greenbriar Creek | Fair | 103.0 ft | 190 | 1977 |
| Quaker / P30 over Buttricks Creek | Fair | 150.9 ft | 190 | 1977 |
| R AVE / P30 over Raccoon River | Fair | 392.1 ft | 190 | 1975 |
| 195 TH over West Buttricks Creek | Fair | 102.0 ft | 180 | 1970 |
| 305 TH / E57 over Raccoon River | Fair | 379.9 ft | 170 | 1940 |
| 170 TH / E26 over East Buttricks Creek | Fair | 62.0 ft | 170 | 1935 |
| J AVE / P14 over Creek | Fair | 25.9 ft | 139 | 1972 |
| A AVE / N58 over Creek | Fair | 25.9 ft | 131 | 1984 |
| 110 TH / E13 over Cedar Creek | Fair | 103.0 ft | 110 | 1959 |
| V AVE over Stream | Fair | 20.0 ft | 100 | 1988 |
| 110 TH over Hardin Creek | Fair | 100.1 ft | 100 | 1978 |
| M AVE over Stream | Fair | 77.1 ft | 62 | 1971 |
| X AVE over West Beaver Creek | Fair | 44.0 ft | 62 | 1976 |
| 150 TH over Cedar Creek | Fair | 152.9 ft | 62 | 1949 |
| Parkland AVE over Hardin Creek | Fair | 78.1 ft | 60 | 1979 |
| M AVE over Stream | Fair | 102.0 ft | 51 | 1958 |
| 205 TH over Stream | Fair | 60.0 ft | 51 | 1937 |
| 205 Th/imperial over Stream | Fair | 38.1 ft | 51 | 1958 |
| 283 RD over Raccoon River | Fair | 378.0 ft | 50 | 1937 |
| 215 TH over Raccoon River | Fair | 336.9 ft | 46 | 1949 |
| 195 TH over Small | Fair | 20.0 ft | 46 | 1989 |
| 250 TH over Buttricks Creek | Fair | 128.0 ft | 45 | 1957 |
| 270 TH over Greenbrier Creek | Fair | 23.0 ft | 45 | 1983 |
| 100 TH over Small | Fair | 21.0 ft | 45 | 1978 |
| 337 TH over Bowers Run | Fair | 25.9 ft | 40 | 1995 |
| W AVE over Snake Creek | Fair | 26.9 ft | 35 | 1984 |
| 100th ST over East Buttrick Creek | Fair | 39.0 ft | 35 | 1919 |
| Kirkwood AVE over Hardin Creek | Fair | 49.9 ft | 35 | 1948 |
| 280 TH over Stream | Fair | 54.1 ft | 30 | 1947 |
| V AVE over W Beaver Creek | Fair | 21.0 ft | 30 | 1988 |
| 210 TH over Stream | Fair | 21.0 ft | 30 | 1926 |
| 185 TH over Otter Creek | Fair | 60.0 ft | 30 | 1992 |
| 190 TH over Stream | Fair | 87.9 ft | 30 | 1991 |
| 175 TH over Raccoon River | Fair | 299.9 ft | 29 | 1942 |
| S AVE over Stream | Fair | 24.0 ft | 26 | 1953 |
| 330 TH over Stream | Fair | 43.0 ft | 26 | 1921 |
| L AVE / P18 over Greenbrier Creek | Fair | 24.9 ft | 26 | 1991 |
| Brentwood over Willow Creek | Fair | 65.0 ft | 26 | 1980 |
| Hillcrest AVE over Stream | Fair | 24.9 ft | 26 | 1994 |
| 270 TH over Stream | Fair | 103.0 ft | 26 | 1973 |
| 150 TH over Stream | Fair | 36.1 ft | 26 | 1965 |
| A AVE over Small Stream | Fair | 22.0 ft | 26 | 1979 |
| 310th ST over Deadbrier Creek | Fair | 33.1 ft | 26 | 1998 |
| 310 TH over Stream | Fair | 77.1 ft | 21 | 1966 |
| 100 TH over Hardin Creek | Fair | 52.2 ft | 20 | 1982 |
| 100 TH over Cedar Creek | Fair | 101.0 ft | 20 | 1979 |
| K AVE over Greenbrier Creek | Fair | 61.0 ft | 15 | 1936 |
| Meadow AVE over Small Stream | Fair | 23.0 ft | 15 | 1980 |
| 170 TH over Stream | Fair | 103.0 ft | 15 | 1972 |
| 110 TH over East Buttricks Creek | Fair | 26.9 ft | 15 | 1983 |
| 100 TH over Buttricks Creek | Fair | 77.1 ft | 15 | 1977 |
| 140 TH over Drainage Ditch | Fair | 34.1 ft | 15 | 1935 |
| 100 TH over Stream | Fair | 21.0 ft | 15 | 1920 |
| 120 TH over Stream | Fair | 79.1 ft | 15 | 1967 |
| 185 Th/farm DR over Dd #110 | Fair | 29.9 ft | 11 | 1925 |
| 218 TH over Stream | Fair | 102.0 ft | 11 | 1937 |
| 140 TH over Stream | Fair | 57.1 ft | 11 | 1934 |
| 110 TH over Stream | Fair | 77.1 ft | 11 | 1961 |
| 110 TH over Stream | Fair | 21.0 ft | 11 | 1934 |
| 320 TH over Snake Creek | Fair | 26.9 ft | 5 | 1981 |
| Ia 4 (n Elm St) over Up Rr & Mckinley ST | Good | 1100.1 ft | 6,200 | 2012 |
| US 30 over Up Rr & 222nd | Good | 628.3 ft | 4,970 | 2017 |
| US 30 over West Beaver Creek | Good | 43.3 ft | 4,970 | 2017 |
| US 30 over Little Beaver Creek | Good | 33.8 ft | 4,570 | 2009 |
| US 30 over North Raccoon River | Good | 389.1 ft | 3,270 | 2010 |
| Ia 4 over Drainage Ditch #110 | Good | 32.2 ft | 1,950 | 1993 |
| Ia 4 over Drainage Ditch #110 | Good | 28.9 ft | 1,950 | 1978 |
| Ia 144 over Snake Creek | Good | 24.9 ft | 1,690 | 1987 |
| Ia 4 over Greenbrier Creek | Good | 98.1 ft | 1,620 | 1993 |
| Ia 25 over Up Rr | Good | 180.1 ft | 1,220 | 1987 |
| E53 over Buttricks Creek | Good | 179.1 ft | 1,196 | 1958 |
| Ia 25 over Drainage Ditch #117 | Good | 38.1 ft | 970 | 2006 |
| E 18 130th ST over East Buttrick Creek | Good | 95.1 ft | 874 | 1994 |
| Ia 144 over Devils Fork | Good | 35.1 ft | 680 | 2017 |
| Ia 144 over East Buttrick Creek | Good | 23.0 ft | 600 | 2023 |
| Ia 144 over East Buttrick Creek | Good | 52.2 ft | 590 | 2022 |
| Ia 4 over Hardin Creek | Good | 123.0 ft | 530 | 1990 |
| E18 130th ST over West Buttricks Creek | Good | 101.0 ft | 528 | 2018 |
| N 65 D AVE over Raccoon River | Good | 354.7 ft | 379 | 2017 |
| A AVE / N58 over Drainage Ditch 9-13 | Good | 91.9 ft | 329 | 2005 |
| E39 210th ST over Drainage Ditch 150-86 | Good | 69.9 ft | 303 | 2017 |
| E57 290th ST over Greenbrier Creek | Good | 86.9 ft | 131 | 2017 |
| Neola AVE over Hardin Creek | Good | 142.1 ft | 82 | 1986 |
| Orchard AVE over Hardin Creek | Good | 177.2 ft | 79 | 1983 |
| 210 TH over Stream | Good | 177.2 ft | 72 | 2002 |
| 210 TH over Hardin Creek | Good | 90.9 ft | 72 | 2002 |
| 222 Nd over Hardin Creek | Good | 139.1 ft | 62 | 1987 |
| 215 TH over Stream | Good | 78.1 ft | 51 | 2005 |
| 140 TH over Cedar Creek | Good | 142.1 ft | 51 | 1990 |
| 190 TH over Hardin Creek | Good | 26.9 ft | 50 | 1983 |
| 210th ST over West Beaver Creek | Good | 78.1 ft | 46 | 2003 |
| 280th ST over Snake Creek | Good | 40.7 ft | 42 | 2024 |
| W AVE over Snake Creek | Good | 26.9 ft | 41 | 1982 |
| 150 TH over East Buttricks Creek | Good | 75.1 ft | 41 | 1987 |
| H AVE over Stream | Good | 78.1 ft | 41 | 2003 |
| 270th Street over Unnamed Stream | Good | 49.9 ft | 40 | 2004 |
| W AVE over Snake Creek | Good | 26.9 ft | 35 | 1983 |
| W AVE over Snake Creek | Good | 26.9 ft | 35 | 1984 |
| 255 TH over Hardin Creek | Good | 125.0 ft | 35 | 1981 |
| E AVE over Stream | Good | 78.1 ft | 35 | 2002 |
| 310 TH over Greenbrier Creek | Good | 90.9 ft | 30 | 1989 |
| 190 TH over East Buttericks Creek | Good | 100.1 ft | 30 | 1994 |
| I AVE over Short Creek | Good | 52.2 ft | 30 | 2006 |
| 130 TH over Stream | Good | 116.1 ft | 30 | 2002 |
| L AVE / P16 over Hardin Creek | Good | 102.0 ft | 29 | 1979 |
| 337th ST over Snake Creek | Good | 77.1 ft | 26 | 1978 |
| 243 RD over Hardin Creek | Good | 143.0 ft | 26 | 2009 |
| 160 TH over East Buttricks Creek | Good | 103.0 ft | 21 | 2001 |
| 160 TH over Buttricks Creek | Good | 90.9 ft | 21 | 2003 |
| 150 TH over Devils Fork | Good | 21.0 ft | 21 | 1979 |
| 150 TH over West Buttricks Creek | Good | 87.9 ft | 21 | 1989 |
| 130 TH over Hardin Creek | Good | 89.9 ft | 21 | 1988 |
| 200 TH over East Buttricks Creek | Good | 90.9 ft | 20 | 1990 |
| 160 TH / E26 over Hardin Creek | Good | 100.1 ft | 20 | 1980 |
| T AVE over Buttrick Creek | Good | 89.9 ft | 15 | 2001 |
| 120 TH over Buttricks Creek | Good | 77.1 ft | 15 | 1979 |
| 120 TH over West Buttricks Creek | Good | 77.1 ft | 15 | 1978 |
| 150 TH over Hardin Creek | Good | 125.0 ft | 15 | 1994 |
| H AVE over Green Brier Creek | Good | 100.1 ft | 11 | 2004 |
| T AVE over Stream | Good | 90.9 ft | 11 | 2002 |
| P AVE over Butterick Creek | Good | 78.1 ft | 11 | 1986 |