| Traer ST over Ovrflw Shell Rock River | Poor | 71.9 ft | 1,902 | 1900 |
| Cherry ST over Drainage | Poor | 106.0 ft | 1,429 | 1900 |
| C33 over Small Stream | Poor | 77.1 ft | 1,002 | 1966 |
| FM over Landphere Creek | Poor | 103.0 ft | 890 | 1972 |
| FM over West Fork Cedar River | Poor | 275.9 ft | 874 | 1964 |
| T64 over Small Stream | Poor | 77.1 ft | 776 | 1968 |
| FM over Mc Clure Creek | Poor | 102.0 ft | 470 | 1970 |
| FM over West Fork Cedar River | Poor | 492.1 ft | 373 | 1970 |
| FM over Small Stream | Poor | 103.0 ft | 373 | 1970 |
| FM over Small Stream | Poor | 77.1 ft | 373 | 1969 |
| T47 over Shell Rock River | Poor | 448.2 ft | 285 | 1963 |
| Local over Small Stream | Poor | 58.1 ft | 91 | 1949 |
| FM over West Fork Cedar River | Poor | 330.1 ft | 79 | 1920 |
| 300 ST over Small | Poor | 25.9 ft | 73 | 1979 |
| FM over Landphere Creek | Poor | 61.0 ft | 70 | 1964 |
| Local over Small Stream | Poor | 102.0 ft | 70 | 1966 |
| Local over Hartgrave Ck | Poor | 88.9 ft | 59 | 1952 |
| Local over Small Stream | Poor | 24.9 ft | 51 | 1969 |
| FM over Small Stream | Poor | 258.9 ft | 49 | 1964 |
| 120th ST over Stream | Poor | 126.0 ft | 48 | 1981 |
| Camp Comfort over Small Stream | Poor | 95.1 ft | 42 | 1936 |
| Local over Small Stream | Poor | 65.9 ft | 41 | 1965 |
| 160th ST over Stream | Poor | 76.1 ft | 41 | 1990 |
| Local over Small Stream | Poor | 77.1 ft | 35 | 1953 |
| 185th St. over Stream | Poor | 78.1 ft | 35 | 1900 |
| FM over Small Stream | Poor | 44.0 ft | 35 | 1953 |
| Kipling Ave. over Cold Water Creek | Poor | 78.1 ft | 30 | 1915 |
| FM over Boylan Creek | Poor | 77.1 ft | 29 | 1967 |
| Local over Maynes Creek | Poor | 171.9 ft | 26 | 1900 |
| Quail AVE over Flood Creek | Poor | 86.0 ft | 26 | 1910 |
| Local over Beaver Creek | Poor | 138.1 ft | 21 | 1910 |
| Local over Crab Apple Creek | Poor | 45.9 ft | 21 | 1987 |
| Local over Small Stream | Poor | 35.1 ft | 11 | 1970 |
| Local over Small Stream | Poor | 44.0 ft | 10 | 1961 |
| Blue Bird Dr. over Cold Water Creek | Poor | 78.1 ft | 5 | 1905 |
| Ia 3 over Over Ianr Rr | Fair | 200.1 ft | 3,540 | 1967 |
| Ia 3 over Shell Rock River | Fair | 465.9 ft | 3,540 | 1967 |
| Cherry ST over Shell Rock River | Fair | 266.1 ft | 3,435 | 1915 |
| Ia 57 over Drainage Ditch | Fair | 35.1 ft | 2,480 | 1924 |
| Ia 57 over Drainage Ditch | Fair | 63.0 ft | 2,260 | 1971 |
| Ia 57 over Drainage Ditch | Fair | 25.9 ft | 2,260 | 1929 |
| Ia 57 over Beaver Creek | Fair | 23.0 ft | 2,260 | 1928 |
| Traer ST over Shellrock River | Fair | 263.1 ft | 1,931 | 1981 |
| Ia 14 over Beaver Creek | Fair | 296.9 ft | 1,760 | 1984 |
| Ia 14 over Stream | Fair | 139.1 ft | 1,740 | 1994 |
| Ia 14 over Ia Nr Rr | Fair | 137.1 ft | 1,500 | 1936 |
| Ia 3 over Hartgraves Creek | Fair | 280.8 ft | 1,420 | 1984 |
| Ia 3 over Hartgraves Crk Overflow | Fair | 35.1 ft | 1,420 | 1957 |
| Ia 14 over W Fk Cedar River | Fair | 191.9 ft | 1,160 | 1984 |
| Ia 14 over W Fk Cedar River | Fair | 349.7 ft | 1,160 | 1984 |
| Ia 14 over Drainage Ditch | Fair | 54.1 ft | 1,160 | 1946 |
| Ia 3 over Boylan Creek | Fair | 127.0 ft | 1,080 | 1927 |
| Ia 188 over Stream | Fair | 62.0 ft | 1,020 | 1962 |
| C 33 over Small Stream | Fair | 60.0 ft | 1,002 | 1966 |
| FM over Overflow-beaver Ck | Fair | 128.0 ft | 960 | 1994 |
| C33 over Shell Rock River | Fair | 448.2 ft | 805 | 1957 |
| T64 over Small Stream | Fair | 77.1 ft | 776 | 1968 |
| C13 over Small Stream | Fair | 21.0 ft | 727 | 1900 |
| C13 over Small | Fair | 90.9 ft | 727 | 1983 |
| FM over Beaver Creek | Fair | 247.0 ft | 679 | 1979 |
| FM over Overflow To W Fork Ced R | Fair | 128.0 ft | 619 | 1985 |
| FM over North Beaver Creek | Fair | 127.0 ft | 501 | 1985 |
| Ia 188 over Dry Run Creek | Fair | 145.0 ft | 490 | 1959 |
| Ia 188 over Stream | Fair | 24.9 ft | 490 | 1900 |
| FM over Small Stream | Fair | 23.0 ft | 452 | 1949 |
| FM over Boylan Creek | Fair | 191.9 ft | 255 | 2002 |
| Marsh Ave. over Small Stream | Fair | 60.0 ft | 82 | 1961 |
| FM over Drainage | Fair | 39.0 ft | 79 | 1900 |
| Local over Small Stream | Fair | 132.9 ft | 74 | 1956 |
| Local over Kilsons Creek | Fair | 33.1 ft | 73 | 1987 |
| Ivy Ave. over Coldwater Creek | Fair | 112.9 ft | 62 | 1977 |
| FM over Coldwater Creek | Fair | 128.0 ft | 59 | 1978 |
| Local over Beaver Creek | Fair | 185.0 ft | 51 | 1952 |
| 180th ST over Sheel Rock River Branch | Fair | 103.0 ft | 51 | 1977 |
| Local over West Fork Of Cedar River | Fair | 251.0 ft | 51 | 1952 |
| Local over Cold Water Creek | Fair | 91.9 ft | 51 | 1976 |
| Jay Ave. over Cold Water Creek | Fair | 128.0 ft | 51 | 1983 |
| FM over Stream | Fair | 89.9 ft | 49 | 1973 |
| Local over West Fork Cedar River | Fair | 53.1 ft | 47 | 1962 |
| Local over Kilson Creek | Fair | 77.1 ft | 44 | 1997 |
| Local over Coldwater Creek | Fair | 100.1 ft | 44 | 1976 |
| FM over Stream | Fair | 21.0 ft | 44 | 1993 |
| Local over Small Stream | Fair | 69.9 ft | 39 | 1991 |
| Keystone Ave. over Stream | Fair | 40.0 ft | 39 | 2011 |
| Keystone Ave. over Stream | Fair | 42.0 ft | 39 | 1964 |
| Local over Small Stream | Fair | 30.8 ft | 36 | 1952 |
| Local over Maynes Creek | Fair | 169.9 ft | 35 | 1993 |
| 160th ST over Stream | Fair | 27.9 ft | 35 | 1900 |
| Local over Parmentar Creek | Fair | 50.9 ft | 35 | 1987 |
| FM over Small Stream | Fair | 77.1 ft | 34 | 1953 |
| Vail AVE over Small Stream | Fair | 103.0 ft | 34 | 1953 |
| Local over Small | Fair | 21.0 ft | 31 | 1979 |
| Local over Small Stream | Fair | 50.9 ft | 31 | 1988 |
| Local over Small Stream | Fair | 69.9 ft | 30 | 1990 |
| Local over Small Stream | Fair | 58.1 ft | 26 | 1941 |
| Local over Small Stream | Fair | 34.1 ft | 26 | 1900 |
| Local over Maynes Creek | Fair | 150.9 ft | 25 | 1900 |
| Local over Small Stream | Fair | 30.8 ft | 21 | 1966 |
| Forest AVE over Parmentar Creek | Fair | 75.1 ft | 21 | 2012 |
| Forest AVE over Small Stream | Fair | 57.1 ft | 21 | 2012 |
| Forest AVE over Small Stream | Fair | 87.9 ft | 21 | 2011 |
| Forest AVE over Small Stream | Fair | 37.1 ft | 21 | 2011 |
| Local over Small Stream | Fair | 86.9 ft | 20 | 1900 |
| Local over Drainage | Fair | 22.0 ft | 20 | 1967 |
| Local over Small Stream | Fair | 37.1 ft | 16 | 1967 |
| Local over Small Stream | Fair | 56.1 ft | 16 | 1900 |
| Evergreen AVE over Small Stream | Fair | 76.1 ft | 16 | 2012 |
| Local over Small Stream | Fair | 76.1 ft | 15 | 1900 |
| 150th ST over Stream | Fair | 128.0 ft | 15 | 1971 |
| Floyd Line ST over Flood Creek | Fair | 127.0 ft | 15 | 1966 |
| Floyd Line ST over Stream | Fair | 82.0 ft | 15 | 1983 |
| Local over Boylan Creek | Fair | 128.0 ft | 15 | 1979 |
| Ia 57 over Beaver Creek | Good | 300.9 ft | 2,480 | 2003 |
| Ia 57 over Phelps Creek | Good | 38.1 ft | 2,400 | 2017 |
| Ia 57 over Drainage Ditch | Good | 38.7 ft | 2,400 | 2023 |
| Ia 3 over Stream | Good | 21.0 ft | 2,390 | 1967 |
| Ia 14 over Phelps Creek | Good | 27.9 ft | 2,300 | 2011 |
| Ia 188 over Shell Rock River | Good | 483.9 ft | 2,010 | 1992 |
| Ia 14 over Stream | Good | 29.9 ft | 1,740 | 1994 |
| Ia 14 over Cold Water Creek | Good | 221.1 ft | 1,740 | 2010 |
| Ia 14 over Shell Rock River | Good | 521.0 ft | 1,520 | 1967 |
| Ia 14 over Johnson Creek | Good | 142.1 ft | 1,280 | 1984 |
| Ia 14 over Br W Fork Cedar River | Good | 58.1 ft | 1,160 | 1984 |
| Ia 14 over Br W Fk Cedar River | Good | 191.9 ft | 1,160 | 1984 |
| FM over Beaver Creek | Good | 303.1 ft | 1,100 | 1984 |
| Ia 3 over W Fork Cedar River | Good | 499.7 ft | 1,080 | 2021 |
| Ia 3 over Kilson Creek | Good | 123.0 ft | 1,080 | 2002 |
| Ia 3 over Drainage Ditch | Good | 35.1 ft | 1,080 | 1951 |
| Ia 57 over Gran Creek | Good | 24.0 ft | 1,020 | 2023 |
| Ia 188 over Drainage Ditch | Good | 26.2 ft | 1,020 | 1962 |
| C33 over Dry Run Creek | Good | 139.1 ft | 1,002 | 2004 |
| T47 Sinclair AVE over Small Stream | Good | 112.9 ft | 960 | 2014 |
| FM over Beaver Creek | Good | 354.0 ft | 960 | 2003 |
| FM over Mc Clure Creek | Good | 128.0 ft | 903 | 1999 |
| T55 Temple AVE over West Fork Cedar River | Good | 268.7 ft | 891 | 2024 |
| C33 180th ST over Small Stream | Good | 26.9 ft | 805 | 2015 |
| E South ST over Small Stream | Good | 69.9 ft | 779 | 2016 |
| C13 over Flood Creek | Good | 191.9 ft | 727 | 2002 |
| FM over West Fork Cedar River | Good | 663.1 ft | 650 | 2003 |
| FM over Small Stream | Good | 78.1 ft | 638 | 1990 |
| Sinclair AVE over Small Stream | Good | 53.1 ft | 638 | 2000 |
| FM over West Fork Cedar River | Good | 312.0 ft | 619 | 2003 |
| C33 over Small Stream | Good | 28.9 ft | 609 | 1993 |
| Sinclair AVE over Small Stream | Good | 25.9 ft | 579 | 2000 |
| FM over Small Stream | Good | 24.9 ft | 579 | 1992 |
| FM over Maynes Creek | Good | 175.9 ft | 579 | 1992 |
| T16 Douglas AVE over Small Stream | Good | 24.9 ft | 579 | 2017 |
| T16 Douglas AVE over Hartgrave Creek | Good | 296.9 ft | 579 | 2013 |
| FM over Small Stream | Good | 89.9 ft | 540 | 1999 |
| T25 (hickory Av over Small Stream | Good | 103.0 ft | 530 | 2008 |
| C13 110th ST over Dry Run Creek | Good | 103.0 ft | 530 | 2014 |
| C13 over Cold Water Creek | Good | 191.9 ft | 511 | 2006 |
| C23 over Small Stream | Good | 89.9 ft | 511 | 2002 |
| FM over Small Stream | Good | 29.9 ft | 501 | 2009 |
| T16 (dodge Ave) over Beaver Creek | Good | 180.1 ft | 501 | 2014 |
| Douglas Ave. over Small Stream | Good | 26.9 ft | 501 | 1992 |
| Ia 188 over Drainage Ditch | Good | 21.0 ft | 490 | 1962 |
| T43 over Alry Run Creek | Good | 103.0 ft | 442 | 2006 |
| Arlington ST over W Fork Cedar River | Good | 132.9 ft | 430 | 2015 |
| Arlington ST over Br W Fork Cedar River | Good | 38.1 ft | 430 | 2000 |
| Washington ST over Drainage | Good | 152.9 ft | 423 | 2001 |
| FM over Small Stream | Good | 90.9 ft | 393 | 2003 |
| T16 (clay Ave) over Boylan Creek | Good | 120.1 ft | 393 | 2012 |
| C45 Butler Cntr over Small Stream | Good | 152.9 ft | 363 | 2014 |
| Yale AVE over Small Stream | Good | 29.9 ft | 334 | 2008 |
| Co T 16 over Br W Fork Cedar River | Good | 26.9 ft | 320 | 2004 |
| T47 Packard AVE over Small Stream | Good | 39.0 ft | 304 | 2015 |
| FM over Small Stream | Good | 24.0 ft | 304 | 2005 |
| FM over Kilson Creek | Good | 28.9 ft | 304 | 2005 |
| 180 ST over Alry Run Creek | Good | 38.1 ft | 285 | 2000 |
| FM over Beaver Creek | Good | 367.1 ft | 216 | 1998 |
| FM over Beaver Creek | Good | 179.1 ft | 187 | 2008 |
| FM over Branch Beaver Creek | Good | 153.9 ft | 187 | 1997 |
| FM over Beaver Creek | Good | 359.9 ft | 137 | 1987 |
| T23 Holly AVE over Small Stream | Good | 38.1 ft | 137 | 2018 |
| Liberty Avenue over Small | Good | 56.1 ft | 118 | 2003 |
| Walnut AVE over Stream | Good | 56.1 ft | 113 | 2002 |
| 280th ST over Mcclure Creek | Good | 152.9 ft | 108 | 2011 |
| Quarry Ave. over Stream | Good | 132.9 ft | 91 | 2010 |
| Local over Crab Apple Creek | Good | 50.9 ft | 82 | 1985 |
| Marsh AVE over Small Stream | Good | 56.1 ft | 79 | 2023 |
| 270th ST over Small Stream | Good | 45.9 ft | 74 | 2019 |
| Local over Beaver Creek | Good | 246.1 ft | 73 | 2009 |
| Forest AVE over Beaver Creek | Good | 201.4 ft | 73 | 2018 |
| 195th ST over Unnamed Creek | Good | 56.1 ft | 73 | 2023 |
| Local over Small Stream | Good | 50.9 ft | 73 | 1996 |
| Local over Small Stream | Good | 55.1 ft | 69 | 2000 |
| C 25 170th ST over Small Stream | Good | 24.3 ft | 69 | 2019 |
| C 25 170th ST over Small Stream | Good | 22.0 ft | 69 | 2019 |
| Spring Ave. over Small Stream | Good | 50.9 ft | 62 | 1999 |
| 245th ST over Small Stream | Good | 77.4 ft | 62 | 2013 |
| Local over Small Stream | Good | 50.9 ft | 62 | 1994 |
| FM over Beaver Creek | Good | 127.0 ft | 59 | 1980 |
| 475th ST over Small Stream | Good | 56.1 ft | 59 | 2004 |
| 175th ST over Small Stream | Good | 45.9 ft | 59 | 2004 |
| Local over Hartgrave Creek | Good | 246.1 ft | 59 | 2000 |
| Grand Ave. over Small Stream | Good | 56.1 ft | 59 | 2002 |
| Local over Small Stream | Good | 111.9 ft | 51 | 2009 |
| 150th ST over Stream | Good | 49.9 ft | 51 | 2005 |
| Local over Small Stream | Good | 50.9 ft | 51 | 1994 |
| 310th Street over Small Stream | Good | 45.9 ft | 51 | 2002 |
| Local over Small Stream | Good | 50.9 ft | 49 | 1996 |
| FM over Small Stream | Good | 56.1 ft | 49 | 2001 |
| T47 Pearl AVE over Alry Creek | Good | 112.9 ft | 49 | 2019 |
| Local over Small Stream | Good | 65.9 ft | 49 | 2004 |
| 140th ST over Flood Creek | Good | 152.9 ft | 49 | 2009 |
| 310th Street over Small | Good | 50.9 ft | 49 | 2005 |
| Spring AVE over Unnamed Waterway | Good | 36.1 ft | 49 | 2014 |
| Local over Small Stream | Good | 56.1 ft | 45 | 1999 |
| 230th ST over Small Stream | Good | 56.1 ft | 44 | 2023 |
| Yale AVE over Stream | Good | 39.0 ft | 44 | 2015 |
| Local over Small Stream | Good | 44.9 ft | 41 | 2007 |
| Local over Big Marsh | Good | 50.9 ft | 41 | 1994 |
| Birch AVE over Small Stream | Good | 47.9 ft | 41 | 2014 |
| 160th ST over Small Stream | Good | 56.1 ft | 41 | 2022 |
| 175th ST over Small Stream | Good | 56.1 ft | 41 | 2022 |
| Local over Small Stream | Good | 56.1 ft | 41 | 2008 |
| Local over Small Stream | Good | 32.2 ft | 41 | 1995 |
| Ivy Ave. over Stream | Good | 41.0 ft | 41 | 1998 |
| 175th Street over Small | Good | 45.9 ft | 41 | 2004 |
| Forest AVE over Small Stream | Good | 29.9 ft | 41 | 2020 |
| Cedar AVE over Beaver Creek | Good | 152.9 ft | 39 | 2023 |
| Newell Ave. over Small Stream | Good | 56.1 ft | 39 | 2006 |
| Floyd Line ST over Stream | Good | 56.1 ft | 39 | 2019 |
| Local over Stream | Good | 56.1 ft | 39 | 2002 |
| Local over Small Stream | Good | 50.9 ft | 35 | 1989 |
| Local over Small Stream | Good | 56.1 ft | 35 | 2006 |
| Oak AVE over Alry Run Creek | Good | 56.1 ft | 35 | 2020 |
| Oak AVE over Small Stream | Good | 45.9 ft | 35 | 2020 |
| Ridge Ave. over Small Stream | Good | 30.8 ft | 35 | 1991 |
| Camp Comfort RD over Small Stream | Good | 103.0 ft | 35 | 2016 |
| 130th Street over Small | Good | 36.1 ft | 35 | 2005 |
| 305th ST over Unnamed Waterway | Good | 36.1 ft | 35 | 2014 |
| 120th ST over Small Stream | Good | 30.2 ft | 35 | 2022 |
| 175th ST over Small Stream | Good | 116.1 ft | 34 | 1988 |
| 302 Street over Small | Good | 49.9 ft | 34 | 2003 |
| Newell AVE over Small Stream | Good | 41.0 ft | 34 | 2006 |
| Local over Small Stream | Good | 56.1 ft | 31 | 2004 |
| Local over Small Stream | Good | 42.0 ft | 30 | 1992 |
| Local over Beaver Creek | Good | 111.9 ft | 30 | 2008 |
| Local over Beaver Creek | Good | 167.0 ft | 30 | 1989 |
| Local over Small Stream | Good | 56.1 ft | 30 | 1997 |
| Local over Small Stream | Good | 80.1 ft | 30 | 2016 |
| Local over Small Stream | Good | 76.1 ft | 30 | 1900 |
| Forest AVE over Small Stream | Good | 50.9 ft | 30 | 2000 |
| 120th St. over Small Stream | Good | 30.8 ft | 30 | 1985 |
| Local over Small Stream | Good | 27.9 ft | 30 | 1992 |
| Local over Small Stream | Good | 45.9 ft | 30 | 2007 |
| Evergreen AVE over Johnson Creek | Good | 29.9 ft | 30 | 2010 |
| FM over Small Stream | Good | 45.9 ft | 29 | 1997 |
| Spring AVE over Stream | Good | 41.0 ft | 29 | 1991 |
| Marsh AVE over Palmer Creek | Good | 83.0 ft | 29 | 2023 |
| Floyd Line St. over Stream | Good | 38.1 ft | 29 | 2001 |
| 180th Street over Small Stream | Good | 36.4 ft | 26 | 2022 |
| 120th ST over Stream | Good | 111.9 ft | 26 | 2020 |
| Forest AVE over Coldwater Creek | Good | 24.9 ft | 26 | 2017 |
| Local over Small Stream | Good | 41.0 ft | 26 | 1998 |
| Union AVE over Small | Good | 41.0 ft | 26 | 2005 |
| Marsh Avenue over Small | Good | 56.1 ft | 26 | 2005 |
| 180th Street over Small Stream | Good | 41.0 ft | 26 | 2007 |
| 220th ST over Unnamed Creek | Good | 56.1 ft | 25 | 2023 |
| 265th ST over Small Stream | Good | 152.9 ft | 25 | 2018 |
| Liberty AVE over Small Stream | Good | 44.0 ft | 25 | 2016 |
| 270th ST over Small Stream | Good | 56.1 ft | 25 | 2019 |
| Local over Small Stream | Good | 50.9 ft | 25 | 1992 |
| Local over Small Stream | Good | 56.1 ft | 21 | 2006 |
| 180th ST over Stream | Good | 98.1 ft | 21 | 2024 |
| 130th ST over Flood Creek | Good | 152.9 ft | 21 | 2015 |
| Vail AVE over Small Stream | Good | 56.1 ft | 20 | 2022 |
| 180th ST over Small Stream | Good | 56.1 ft | 16 | 2022 |
| 250th ST over Small Stream | Good | 41.0 ft | 16 | 2007 |
| 230th ST over Kilson Creek | Good | 56.1 ft | 15 | 2023 |
| Local over Small Stream | Good | 56.1 ft | 15 | 2008 |
| Floyd Line ST over Stream | Good | 56.1 ft | 15 | 2019 |
| Local over Small Stream | Good | 49.9 ft | 15 | 2000 |
| Local over Small Stream | Good | 56.1 ft | 15 | 2003 |
| Floyd Line ST over Small Creek | Good | 21.0 ft | 15 | 2003 |
| 255th ST over Small Stream | Good | 56.1 ft | 11 | 2019 |
| Silver AVE over Small Stream | Good | 58.1 ft | 11 | 2013 |
| Local over West Fork Cedar River | Good | 243.1 ft | 11 | 1995 |
| 180th ST over Small Stream | Good | 56.1 ft | 11 | 2022 |
| Local over Small Stream | Good | 41.0 ft | 11 | 1998 |
| 105th ST over Stream | Good | 98.1 ft | 11 | 2024 |
| Floyd Line ST over Stream | Good | 128.0 ft | 10 | 1971 |
| Vail AVE over Small Stream | Good | 33.1 ft | 10 | 2000 |
| 185th ST over Dry Creek | Good | 29.9 ft | 10 | 2010 |
| Ivy Avenue over Small | Good | 45.9 ft | 5 | 2003 |