| Linn ST over Indian Creek | Poor | 57.1 ft | 780 | 1986 |
| FM over Small Stream | Poor | 21.0 ft | 660 | 1960 |
| FM over Sm Stream | Poor | 24.0 ft | 490 | 1950 |
| FM over Long Creek | Poor | 153.9 ft | 250 | 1963 |
| Manor RD over Drainage | Poor | 32.2 ft | 144 | 1920 |
| FM over Otter CR | Poor | 102.0 ft | 80 | 1959 |
| Local over Indian Creek | Poor | 29.9 ft | 62 | 1969 |
| Local over Small Stream | Poor | 33.1 ft | 51 | 1974 |
| Local over Small Stream | Poor | 34.1 ft | 47 | 1943 |
| FM over Small Stream | Poor | 44.0 ft | 45 | 1972 |
| FM over Otter Creek | Poor | 55.1 ft | 35 | 1955 |
| Local over Small Stream | Poor | 43.0 ft | 35 | 1960 |
| Local over Otter Creek | Poor | 102.0 ft | 30 | 1920 |
| Local over Short Creek | Poor | 43.0 ft | 26 | 1964 |
| Local over Stream | Poor | 22.0 ft | 21 | 1920 |
| Local over Stream | Poor | 28.9 ft | 21 | 1915 |
| Local over Otter CR | Poor | 71.9 ft | 16 | 1921 |
| Local over Small Stream | Poor | 65.0 ft | 11 | 1920 |
| Local over Small Stream | Poor | 33.1 ft | 11 | 1930 |
| V AVE over Buffington Creek | Poor | 78.1 ft | 11 | 1893 |
| Local over Small Stream | Poor | 28.9 ft | 11 | 1930 |
| Local over Small Stream | Poor | 20.0 ft | 11 | 1950 |
| US 61 over Millrace Creek | Fair | 269.0 ft | 4,950 | 1985 |
| US 61 over Overflow Iowa River | Fair | 132.9 ft | 4,950 | 1985 |
| US 61 over Overflow Iowa River | Fair | 132.9 ft | 4,950 | 1985 |
| US 61 over Overflow Iowa River | Fair | 132.9 ft | 4,950 | 1985 |
| US 61 over Muskrat Lake | Fair | 307.1 ft | 4,950 | 1985 |
| US 61 over Iowa River | Fair | 1040.0 ft | 4,950 | 1980 |
| US 61 over Drainage Ditch | Fair | 123.0 ft | 4,420 | 1985 |
| Ia 92 over Monkey Run Creek | Fair | 46.9 ft | 4,240 | 1984 |
| Ia 92 over Iowa River | Fair | 1449.1 ft | 4,090 | 1985 |
| Ia 92 over Drainage Ditch #25 | Fair | 73.2 ft | 3,410 | 1976 |
| Ia 92 over Indian Creek | Fair | 103.0 ft | 3,410 | 1992 |
| Ia 92 over Little Indian Creek | Fair | 83.0 ft | 3,410 | 1977 |
| US 61 NB Ia 92 EB over Dme Rr | Fair | 180.1 ft | 3,350 | 1977 |
| Ia 92 over Main ST & Collins RD | Fair | 502.0 ft | 3,170 | 1995 |
| Ia 92 over Monkey Run Creek | Fair | 123.0 ft | 2,850 | 1984 |
| Ia 70 over Iowa River | Fair | 581.0 ft | 2,840 | 1989 |
| Ia 78 over Stream | Fair | 36.1 ft | 1,480 | 1952 |
| FM over Small Stream | Fair | 24.9 ft | 1,470 | 1991 |
| Ia 70 over Short Creek | Fair | 182.1 ft | 1,170 | 1994 |
| Walnut ST over Monkey Run | Fair | 49.9 ft | 1,140 | 1935 |
| FM over Small Stream | Fair | 56.1 ft | 840 | 1969 |
| FM over Muscatine Slough | Fair | 78.1 ft | 660 | 1972 |
| Local over Michael Creek | Fair | 96.1 ft | 650 | 1983 |
| Local over Muscatine Slough | Fair | 103.0 ft | 650 | 1968 |
| FM over Long Creek | Fair | 177.2 ft | 630 | 1987 |
| X 99 over Iowa River | Fair | 1159.1 ft | 570 | 2014 |
| FM over Small Stream | Fair | 36.1 ft | 560 | 1960 |
| HWY 99 over Drainage Ditch | Fair | 21.0 ft | 490 | 1954 |
| HWY 99 over Drainage Ditch | Fair | 24.9 ft | 490 | 1954 |
| H 16 (40th St) over Small Stream | Fair | 24.9 ft | 480 | 2002 |
| FM over Small Stream | Fair | 103.0 ft | 440 | 1959 |
| Co RD H22 over Small Stream | Fair | 21.0 ft | 440 | 1959 |
| FM over Long Creek | Fair | 178.1 ft | 290 | 1965 |
| FM over Small Stream | Fair | 21.0 ft | 290 | 1940 |
| FM over Stream | Fair | 178.1 ft | 260 | 1977 |
| Local over Long Creek | Fair | 177.2 ft | 123 | 1985 |
| Local over Small Stream | Fair | 42.0 ft | 123 | 1982 |
| FM over Turkey Run | Fair | 103.0 ft | 120 | 1978 |
| FM over Small Stream | Fair | 127.0 ft | 110 | 1966 |
| FM over Small Stream | Fair | 127.0 ft | 100 | 1960 |
| Local over Johnny Creek | Fair | 25.9 ft | 82 | 1989 |
| Local over Small Stream | Fair | 55.1 ft | 82 | 1986 |
| Local over Small Stream | Fair | 29.9 ft | 82 | 1983 |
| Local over Small Stream | Fair | 32.2 ft | 82 | 1966 |
| FM over Indian Creek | Fair | 128.0 ft | 80 | 1977 |
| Local over Small Stream | Fair | 104.0 ft | 73 | 1986 |
| FM over Keevers Lake | Fair | 49.9 ft | 70 | 1988 |
| Local over Small Stream | Fair | 74.1 ft | 62 | 1985 |
| FM over Long Creek | Fair | 226.0 ft | 60 | 1979 |
| Local over Small Stream | Fair | 103.0 ft | 51 | 1983 |
| Local over Indian Creek | Fair | 103.0 ft | 51 | 1982 |
| Local over Small Stream | Fair | 92.8 ft | 51 | 1989 |
| FM over Otter Creek | Fair | 100.1 ft | 50 | 1959 |
| FM over Johnny Creek | Fair | 28.9 ft | 50 | 1970 |
| FM over Small Stream | Fair | 66.9 ft | 50 | 1960 |
| Local over Small Stream | Fair | 78.1 ft | 50 | 1978 |
| Local over Small Stream | Fair | 26.9 ft | 47 | 1950 |
| FM over Long Creek | Fair | 203.1 ft | 45 | 1977 |
| Local over Muscatine Slough | Fair | 103.0 ft | 41 | 1981 |
| Local over Small Stream | Fair | 90.9 ft | 41 | 1982 |
| Local over Iowa Slough | Fair | 30.8 ft | 40 | 1978 |
| FM over Long Creek | Fair | 183.1 ft | 40 | 1978 |
| Local over Sm Stream | Fair | 24.0 ft | 40 | 1970 |
| Local over Small Stream | Fair | 78.1 ft | 35 | 1979 |
| Local over Otter Creek | Fair | 105.0 ft | 35 | 1972 |
| Local over Indian Creek | Fair | 89.9 ft | 35 | 1980 |
| Local over Small Stream | Fair | 22.0 ft | 30 | 1991 |
| Local over Small Stream | Fair | 53.1 ft | 30 | 1982 |
| FM over Short Creek | Fair | 42.0 ft | 30 | 1970 |
| Local over Short Creek | Fair | 33.1 ft | 30 | 1969 |
| Local over Small Stream | Fair | 21.0 ft | 26 | 2009 |
| Local over Small Stream | Fair | 52.2 ft | 26 | 1986 |
| Local over Small Stream | Fair | 124.0 ft | 26 | 1973 |
| FM over Goose Creek | Fair | 128.0 ft | 25 | 1982 |
| Local over Small Stream | Fair | 28.9 ft | 21 | 1994 |
| 60th ST over Small Stream | Fair | 20.0 ft | 21 | 2013 |
| FM over Small Stream | Fair | 21.0 ft | 20 | 1980 |
| FM over Small | Fair | 24.9 ft | 20 | 1979 |
| Local over Big Slough Creek | Fair | 103.0 ft | 16 | 1988 |
| Local over Small Stream | Fair | 20.0 ft | 15 | 1998 |
| Levee over Lake Odessa Outlet | Fair | 40.0 ft | 1 | 1996 |
| US 61 over Honey Creek | Good | 179.1 ft | 4,420 | 1997 |
| US 61 SB Ia 92 WB over Dme Rr | Good | 179.5 ft | 3,350 | 2016 |
| US 61 SB Ia 92 WB over 170th ST | Good | 191.9 ft | 2,800 | 2017 |
| US 61 NB Ia 92 EB over 170th ST | Good | 191.9 ft | 2,800 | 2017 |
| US 61 NB over Ia 92 | Good | 196.9 ft | 2,225 | 2017 |
| US 61 SB over Ia 92 | Good | 196.9 ft | 2,225 | 2017 |
| 2nd Street over Monkey Creek | Good | 146.0 ft | 2,140 | 1995 |
| Ia 78 over Honey Creek | Good | 42.3 ft | 2,030 | 2022 |
| X 99 Franklin ST over Iowa River | Good | 1199.1 ft | 880 | 2020 |
| FM over Small Stream | Good | 21.0 ft | 690 | 1950 |
| Locust ST over Monkey Run | Good | 39.0 ft | 595 | 2019 |
| Co RD X 17 over Short Creek | Good | 101.0 ft | 540 | 2011 |
| X 17 over Monkey Creek & Imrl Rr | Good | 306.1 ft | 540 | 2008 |
| FM over Otter Creek | Good | 102.0 ft | 490 | 1992 |
| FM over Small Stream | Good | 189.0 ft | 480 | 2002 |
| X 17 over Buffington Creek | Good | 164.0 ft | 290 | 2014 |
| FM over Small Stream | Good | 21.0 ft | 280 | 1989 |
| W66 over Big Slough Creek | Good | 92.8 ft | 190 | 2021 |
| 218th AVE over Johnny Creek | Good | 20.0 ft | 180 | 2020 |
| Local over Michael Creek | Good | 21.0 ft | 166 | 1976 |
| FM over Small Stream | Good | 142.1 ft | 140 | 1978 |
| Local over Small Stream | Good | 38.1 ft | 135 | 2007 |
| Local over Short Creek | Good | 117.1 ft | 104 | 1995 |
| Levee over Lake Odessa Inlet | Good | 34.1 ft | 100 | 1996 |
| Local over Otter Creek | Good | 127.0 ft | 91 | 1978 |
| W Avenue over Buffington Creek | Good | 35.1 ft | 82 | 2022 |
| Local over Small Stream | Good | 54.1 ft | 82 | 1997 |
| FM over Small Stream | Good | 128.0 ft | 80 | 1990 |
| Tri-county Br over Iowa River | Good | 701.1 ft | 80 | 1980 |
| FM over Otter Creek | Good | 191.9 ft | 70 | 1975 |
| FM over Stream | Good | 24.9 ft | 70 | 1992 |
| FM over Cone Marsh | Good | 20.0 ft | 70 | 1985 |
| X AVE over Goose Creek | Good | 149.9 ft | 62 | 2021 |
| Local over Smith Creek | Good | 102.0 ft | 60 | 1984 |
| FM over Stream | Good | 21.0 ft | 60 | 1997 |
| FM over Otter Creek | Good | 103.0 ft | 60 | 1977 |
| W66 over S Fork Short Creek | Good | 70.9 ft | 60 | 2023 |
| Local over Indian Creek | Good | 21.0 ft | 41 | 1987 |
| 65th ST over Stream | Good | 32.2 ft | 40 | 2020 |
| County Line RD over Sm Stream | Good | 26.9 ft | 40 | 1989 |
| Local over Small Stream | Good | 78.1 ft | 35 | 1991 |
| 95th ST over Burlington Creek | Good | 29.9 ft | 35 | 2020 |
| Local over Small Stream | Good | 88.9 ft | 30 | 1986 |
| X 27 S AVE over Small Stream | Good | 69.9 ft | 30 | 2020 |
| Local over Small Stream | Good | 41.0 ft | 26 | 1984 |
| Local over Honey Creek | Good | 66.9 ft | 26 | 1989 |
| Local over Short Creek | Good | 36.1 ft | 16 | 2003 |
| Local over Small Stream | Good | 24.9 ft | 11 | 1998 |