| C70 330th ST over Boone River | Poor | 242.1 ft | 977 | 1951 |
| FM over Iowa River | Poor | 152.9 ft | 977 | 1965 |
| 330th ST over Eagle Creek | Poor | 151.9 ft | 966 | 1951 |
| FM over Eagle Creek | Poor | 67.9 ft | 818 | 1963 |
| FM over White Fox Creek | Poor | 43.0 ft | 742 | 1963 |
| C54 265th ST over Drainage | Poor | 44.0 ft | 609 | 1976 |
| C54 265th ST over Drainage | Poor | 103.0 ft | 569 | 1976 |
| FM over Iowa River | Poor | 180.1 ft | 450 | 1961 |
| Local over Small | Poor | 58.1 ft | 275 | 1973 |
| FM over Iowa River | Poor | 174.9 ft | 199 | 1968 |
| FM over Wheeler Creek | Poor | 44.0 ft | 199 | 1968 |
| FM over Stream | Poor | 33.1 ft | 100 | 1978 |
| FM over Drainage Ditch 36 | Poor | 29.9 ft | 80 | 1968 |
| Local over Drainage Ditch 7 | Poor | 24.0 ft | 73 | 1963 |
| Local over Drainage Ditch 11-13 | Poor | 25.9 ft | 72 | 1927 |
| FM over Stream | Poor | 30.8 ft | 71 | 1981 |
| FM over Small Stream | Poor | 33.1 ft | 61 | 1954 |
| Local over Wheeler Creek | Poor | 44.0 ft | 51 | 1978 |
| Local over Luicks Creek | Poor | 29.9 ft | 51 | 1979 |
| Local over Creek | Poor | 24.9 ft | 47 | 1900 |
| 230th ST over Creek | Poor | 42.0 ft | 46 | 1900 |
| Local over Iowa River | Poor | 131.9 ft | 42 | 1975 |
| Local over White Fox Creek | Poor | 32.2 ft | 35 | 1914 |
| Local over Stream | Poor | 25.9 ft | 35 | 1905 |
| FM over Boone River | Poor | 125.0 ft | 35 | 1972 |
| Buchanan AVE over Boone River | Poor | 128.0 ft | 35 | 1912 |
| Local over Otter Creek | Poor | 65.9 ft | 31 | 1967 |
| Local over Drainage Ditch 36 | Poor | 44.0 ft | 30 | 1980 |
| Local over White Fox Creek | Poor | 55.1 ft | 26 | 1968 |
| Local over Eagle Creek | Poor | 25.9 ft | 26 | 1981 |
| 130th ST over Drainage Ditch 107 | Poor | 41.0 ft | 26 | 1936 |
| Local over White Fox Creek | Poor | 70.9 ft | 21 | 1975 |
| Local Road over Iowa River | Poor | 90.9 ft | 21 | 1930 |
| Local over Eagle Creek | Poor | 25.9 ft | 21 | 1981 |
| Local over Little Eagle Creek | Poor | 35.1 ft | 21 | 1973 |
| Local over Dd #107 | Poor | 57.1 ft | 21 | 1972 |
| Local over Dd #10 | Poor | 52.2 ft | 21 | 1968 |
| FM over Creek | Poor | 24.0 ft | 20 | 1977 |
| Local over Drainage Ditch 3 | Poor | 33.1 ft | 15 | 1979 |
| Local over Drainage Ditch 121 | Poor | 29.9 ft | 15 | 1900 |
| Local over White Fox Creek | Poor | 81.0 ft | 11 | 1941 |
| Local over Drainage Ditch 9 | Poor | 29.9 ft | 11 | 1920 |
| Local over Drainage Ditch 111 | Poor | 24.0 ft | 11 | 1900 |
| Local over Eagle Creek | Poor | 37.1 ft | 11 | 1979 |
| Emmett AVE over Otter Creek | Poor | 68.9 ft | 11 | 1969 |
| Local over Dd #219 | Poor | 68.9 ft | 11 | 1972 |
| Local Road over West Branch Iowa River | Poor | 77.1 ft | 11 | 1919 |
| Local over Eagle Creek | Poor | 24.0 ft | 5 | 1975 |
| SB I-35 over Drainage Ditch #29 | Fair | 150.9 ft | 8,250 | 1974 |
| SB I-35 over Iowa River | Fair | 294.0 ft | 8,250 | 1974 |
| Ia 3 over Eagle Creek | Fair | 43.0 ft | 3,450 | 1932 |
| US 69 over Iowa River | Fair | 215.9 ft | 3,210 | 1933 |
| Ia 17 over Boone River | Fair | 212.9 ft | 3,180 | 1933 |
| Ia 17 over Drainage Ditch | Fair | 43.0 ft | 3,100 | 1933 |
| US 69 over Iowa River | Fair | 312.0 ft | 3,020 | 2022 |
| Ia 17 over Stream | Fair | 23.0 ft | 2,570 | 1960 |
| US 69 over Iowa River | Fair | 206.0 ft | 2,480 | 1977 |
| US 69 over Stream | Fair | 22.0 ft | 2,480 | 1962 |
| US 69 over Drainage Ditch | Fair | 34.1 ft | 2,020 | 1929 |
| Ia 3 over Iowa River | Fair | 237.9 ft | 1,620 | 1976 |
| Ia 3 over Stream | Fair | 124.0 ft | 1,620 | 1976 |
| Fm.rt C-20 over Dd #125 | Fair | 24.0 ft | 970 | 1991 |
| FM over White Fox Creek | Fair | 117.1 ft | 917 | 1980 |
| W Main ST over Iowa River | Fair | 173.9 ft | 908 | 1978 |
| FM over Stream | Fair | 55.1 ft | 898 | 1989 |
| FM over Otter Creek | Fair | 25.9 ft | 833 | 2002 |
| FM R-75 over I-35 | Fair | 449.1 ft | 538 | 1971 |
| FM over D.d.no.90 | Fair | 89.9 ft | 450 | 1993 |
| Local over Eagle Creek | Fair | 128.0 ft | 170 | 1981 |
| Local over Eagle Creek | Fair | 87.9 ft | 112 | 1986 |
| 250th ST over Boone River | Fair | 174.9 ft | 90 | 1974 |
| Local over Drainage Ditch 14 | Fair | 40.0 ft | 81 | 1974 |
| FM over Boone River | Fair | 174.9 ft | 71 | 1974 |
| Local over Iowa River | Fair | 212.9 ft | 63 | 1987 |
| Local over Boone River | Fair | 149.9 ft | 63 | 1968 |
| Local over D.d. 107 | Fair | 30.8 ft | 63 | 1997 |
| Local over Dd #121 | Fair | 29.9 ft | 63 | 1984 |
| Local over Boone River | Fair | 177.2 ft | 62 | 1978 |
| Local over West Branch Iowa River | Fair | 107.0 ft | 51 | 1968 |
| Local over Small Stream | Fair | 33.1 ft | 51 | 1996 |
| Local over Boone River | Fair | 188.0 ft | 50 | 1986 |
| Local over Iowa River | Fair | 246.1 ft | 46 | 1975 |
| 240th ST over Drainage Ditch 14 | Fair | 32.2 ft | 46 | 1920 |
| FM over Creek | Fair | 25.9 ft | 42 | 1980 |
| Local over Drainage Ditch 36 | Fair | 103.0 ft | 41 | 1982 |
| FM over Otter Creek | Fair | 43.0 ft | 41 | 1968 |
| Local over Boone River | Fair | 175.9 ft | 36 | 1985 |
| Local over Otter Creek | Fair | 102.0 ft | 36 | 1982 |
| Yankee AVE over Dd #29 | Fair | 50.9 ft | 35 | 1978 |
| Local over Dd #29 | Fair | 50.9 ft | 35 | 1978 |
| Local over Eagle Creek | Fair | 125.0 ft | 35 | 1968 |
| Local over Eagle Creek | Fair | 126.0 ft | 35 | 1981 |
| Local over Boone River | Fair | 170.9 ft | 31 | 1979 |
| Local over Eagle Creek(dd#36) | Fair | 102.0 ft | 31 | 1984 |
| Local over Boone River | Fair | 127.0 ft | 31 | 1983 |
| FM over Boone River | Fair | 127.0 ft | 31 | 1980 |
| Local over Boone River | Fair | 107.0 ft | 31 | 1968 |
| Local over Eagle Creek | Fair | 107.0 ft | 30 | 1985 |
| Local over Iowa River | Fair | 207.0 ft | 30 | 1978 |
| FM over White Fox Creek | Fair | 100.1 ft | 26 | 1967 |
| Local over W. Br. Iowa River | Fair | 173.9 ft | 26 | 1990 |
| Local over W. Br. Iowa River | Fair | 125.0 ft | 26 | 1990 |
| Local over Dd 107 | Fair | 33.1 ft | 26 | 1983 |
| Local over White Fox Creek | Fair | 102.0 ft | 21 | 1983 |
| Local over Dd# 219 | Fair | 103.0 ft | 21 | 1987 |
| Local over Dd #219 | Fair | 128.0 ft | 21 | 1979 |
| Local Road over Otter Creek | Fair | 77.1 ft | 21 | 1985 |
| Local over White Fox Creek | Fair | 77.1 ft | 15 | 1982 |
| Local over Eagle Creek | Fair | 129.9 ft | 15 | 1976 |
| Local over White Fox Creek | Fair | 102.0 ft | 15 | 1983 |
| FM over Boone River | Fair | 127.0 ft | 11 | 1980 |
| Local over Small Stream | Fair | 39.0 ft | 11 | 1985 |
| Field Entrance over Side Ditch | Fair | 60.0 ft | 10 | 1985 |
| Local over Dd #66 | Fair | 24.0 ft | 5 | 1996 |
| NB I-35 over Drainage Ditch #29 | Good | 150.9 ft | 8,250 | 1974 |
| I 35 NB over Iowa River | Good | 294.0 ft | 8,250 | 1974 |
| Ia 3 over White Fox Creek | Good | 83.0 ft | 4,020 | 1986 |
| Ia 3 over Little Eagle Creek | Good | 22.3 ft | 3,450 | 2016 |
| US 69 over Iowa River | Good | 278.2 ft | 2,970 | 2014 |
| US 69 over Iowa River Overflow | Good | 38.1 ft | 2,970 | 2014 |
| US 69 over Iowa River | Good | 211.9 ft | 2,900 | 2022 |
| Ia 3 & 17 over Drainage Ditch | Good | 98.1 ft | 2,800 | 1984 |
| Ia 3 & 17 over Boone River | Good | 261.2 ft | 2,800 | 1984 |
| Ia 17 over Drainage Ditch #9 | Good | 83.0 ft | 1,490 | 1990 |
| Ia 17 over Drainage Ditch | Good | 24.9 ft | 1,490 | 1987 |
| FM over Drainage Ditch 9 | Good | 26.9 ft | 1,387 | 2003 |
| Ia 17 over Prairie Creek | Good | 179.5 ft | 1,230 | 2022 |
| C70 330th ST over White Fox Creek | Good | 101.0 ft | 1,168 | 2014 |
| FM over Boone River | Good | 213.9 ft | 898 | 1990 |
| FM over Buck Creek | Good | 23.0 ft | 778 | 2003 |
| FM over Drainage Ditch 107 | Good | 119.1 ft | 508 | 2004 |
| R33(hancock Av) over Otter Creek | Good | 91.9 ft | 499 | 2013 |
| FM over Drainage Ditch 107 | Good | 113.8 ft | 469 | 2007 |
| R65 Union AVE over Luick Creek | Good | 39.0 ft | 406 | 2016 |
| FM over Drainage Ditch | Good | 22.0 ft | 390 | 2002 |
| C26 (150th St) over Boone River | Good | 191.9 ft | 305 | 2012 |
| 9th ST SW over Drainage Ditch #15 | Good | 26.9 ft | 257 | 2019 |
| FM over Otter Creek | Good | 128.0 ft | 223 | 2006 |
| Cedar ST over Boone River | Good | 204.1 ft | 220 | 2004 |
| 250th ST over Stream | Good | 24.9 ft | 92 | 2004 |
| Local over White Fox Creek | Good | 22.0 ft | 82 | 2006 |
| Local over Stream | Good | 25.9 ft | 81 | 1992 |
| 305th ST over I-35 | Good | 391.1 ft | 81 | 1974 |
| Local Road over Iowa River | Good | 167.0 ft | 73 | 2001 |
| Calhoun AVE over Stream | Good | 35.1 ft | 71 | 2015 |
| Local over Stream | Good | 20.0 ft | 62 | 2008 |
| FM over Small Stream | Good | 26.9 ft | 61 | 2008 |
| Local over Drainage Ditch 14 | Good | 22.0 ft | 51 | 2002 |
| 210th ST over Dd #36 | Good | 24.0 ft | 51 | 2010 |
| R35 Keokuk AVE over Eagle Creek-d D 36 | Good | 40.0 ft | 50 | 2017 |
| Local Road over Iowa River | Good | 232.0 ft | 46 | 1995 |
| Local Road over Branch Iowa River | Good | 90.9 ft | 42 | 2006 |
| Youngblood AVE over Dd #29 | Good | 24.9 ft | 41 | 2018 |
| C26 (150th St) over Eagle Creek Dd 36 | Good | 28.9 ft | 41 | 2014 |
| C26 150th ST over Drainage Ditch 107 | Good | 112.9 ft | 40 | 2015 |
| Local over Dd# 107 | Good | 89.9 ft | 36 | 1987 |
| Buchanan AVE over Stream | Good | 23.0 ft | 35 | 2021 |
| 250th ST over Eagle Creek | Good | 112.9 ft | 31 | 2017 |
| Local Road over Iowa River | Good | 215.9 ft | 31 | 1991 |
| Local over Otter Creek | Good | 125.0 ft | 31 | 1995 |
| Davis AVE over Stream | Good | 21.0 ft | 26 | 2013 |
| Local over Otter Creek | Good | 69.9 ft | 26 | 2006 |
| North Davis AVE over Wright Co. Drain Ditch | Good | 22.0 ft | 25 | 2004 |
| Baxter AVE over Drainage Ditch | Good | 35.1 ft | 21 | 2011 |
| Local over Iowa River | Good | 246.1 ft | 21 | 1998 |
| Local over Dd #99 | Good | 26.9 ft | 21 | 2008 |
| Local Road over Boone River | Good | 128.0 ft | 21 | 1991 |
| Local over South Fork Iowa River | Good | 66.9 ft | 15 | 1986 |
| Local over Eagle Creek | Good | 115.2 ft | 15 | 2006 |
| Local over Stream | Good | 33.1 ft | 15 | 1996 |
| 160th ST over Creek | Good | 24.0 ft | 15 | 2021 |
| Local over D.d. 107 | Good | 73.2 ft | 15 | 2010 |
| 295th ST over Drainage Ditch #7 | Good | 36.1 ft | 11 | 2012 |
| Local over Stream | Good | 33.1 ft | 11 | 1997 |
| Uptagraph Avenue over Stream | Good | 25.9 ft | 11 | 2014 |