| FM over Wapsi Creek | Poor | 103.0 ft | 3,080 | 1971 |
| HWY 927 over Elkhorn Creek | Poor | 62.0 ft | 2,340 | 1929 |
| US 6 over E Br Wapsinonoc Creek | Poor | 60.0 ft | 1,770 | 1920 |
| FM over Overflow From Sugar Crk | Poor | 128.0 ft | 1,640 | 1971 |
| FM over Mud Creek | Poor | 128.0 ft | 1,600 | 1972 |
| FM over Pine Creek | Poor | 24.9 ft | 1,600 | 1955 |
| FM over Mud Creek | Poor | 154.9 ft | 1,580 | 1971 |
| FM over Wapsinonoc Creek | Poor | 128.0 ft | 1,510 | 1981 |
| FM over Mosquito Ck | Poor | 103.0 ft | 1,260 | 1978 |
| FM over Mosquito Creek | Poor | 68.9 ft | 1,260 | 1978 |
| FM over Little Mosquito Creek | Poor | 102.0 ft | 990 | 1964 |
| FM over Cedar River | Poor | 1054.1 ft | 990 | 1966 |
| FM over Drainage Ditch 2 | Poor | 77.1 ft | 840 | 1969 |
| Local over Lowe Run | Poor | 24.9 ft | 380 | 1928 |
| FM over Mud Creek | Poor | 22.0 ft | 290 | 1948 |
| FM over Creek | Poor | 21.0 ft | 200 | 1970 |
| Park AVE W over Mad Creek | Poor | 40.0 ft | 184 | 1924 |
| Local over Wapsinonoc Creek | Poor | 153.9 ft | 176 | 1936 |
| FM over West Branch Mud Creek | Poor | 52.2 ft | 80 | 1960 |
| FM over Pine Creek | Poor | 151.9 ft | 60 | 1955 |
| Local over Pine Creek | Poor | 42.0 ft | 51 | 1941 |
| Local over Creek | Poor | 33.1 ft | 50 | 1960 |
| FM over Mud Creek | Poor | 120.1 ft | 50 | 1939 |
| Local over Mud Creek | Poor | 152.9 ft | 47 | 1954 |
| Bancroft AVE over Big Slough Creek | Poor | 45.9 ft | 45 | 1937 |
| Local over Pike Creek | Poor | 131.9 ft | 41 | 1900 |
| Local over Creek | Poor | 69.9 ft | 35 | 1956 |
| Local over Creek | Poor | 22.0 ft | 21 | 1942 |
| Local over Small | Poor | 30.8 ft | 15 | 1978 |
| Farm Entrance over Drainage Ditch(sdb) | Poor | 21.0 ft | 10 | 1920 |
| Isett AVE over Geneva Creek | Fair | 75.1 ft | 11,716 | 1980 |
| E 2nd ST over Mad Creek | Fair | 98.1 ft | 8,700 | 1963 |
| Ia 38 over Mad Creek | Fair | 184.1 ft | 8,200 | 1972 |
| Washngton St. over Mad Creek | Fair | 100.1 ft | 7,906 | 1986 |
| 5th ST over Mad Creek | Fair | 129.9 ft | 7,900 | 2006 |
| Ia 38 over Mosquito Creek | Fair | 153.9 ft | 5,300 | 1972 |
| US 6 & Ia 38 over Mud Creek | Fair | 122.0 ft | 5,200 | 1924 |
| US 6 & Ia 38 over Iais Rr | Fair | 170.9 ft | 5,200 | 1930 |
| Clay ST over Mad Creek | Fair | 66.9 ft | 4,858 | 1957 |
| Ia 92 over Mississippi River & Rr | Fair | 3018.0 ft | 3,820 | 1972 |
| Ia 22 over Pike Run Creek | Fair | 175.9 ft | 3,650 | 1987 |
| Lake Park BLVD over Mad Creek | Fair | 191.9 ft | 2,710 | 1973 |
| Ia 70 over Wapsinonoc Creek | Fair | 171.9 ft | 2,660 | 1988 |
| US 6 over Goshen Ditch | Fair | 73.2 ft | 1,770 | 1981 |
| US 6 over Cedar River | Fair | 1036.1 ft | 1,770 | 1972 |
| US 6 over Sugar Creek | Fair | 212.9 ft | 1,770 | 1973 |
| Ia 22 over Stream | Fair | 27.9 ft | 1,730 | 1967 |
| Ia 22 over Drainage Ditch | Fair | 22.0 ft | 1,730 | 1978 |
| Ia 22 over Sweetland Creek | Fair | 149.9 ft | 1,730 | 1978 |
| Bidwell RD over Geneva Creek | Fair | 100.1 ft | 1,620 | 1980 |
| Ia 22 over Stream | Fair | 32.2 ft | 1,560 | 1967 |
| Ia 22 over Stream | Fair | 120.1 ft | 1,560 | 1984 |
| Ia 22 over Pine Creek | Fair | 184.1 ft | 1,490 | 1973 |
| Ia 70 over Drainage Ditch | Fair | 133.9 ft | 830 | 1988 |
| FM over Smith Run | Fair | 22.0 ft | 560 | 1949 |
| FM over Cedar River | Fair | 815.9 ft | 550 | 1997 |
| FM over Dry Run | Fair | 179.1 ft | 550 | 1986 |
| FM over Gedney Lake | Fair | 370.1 ft | 550 | 1975 |
| FM over Pike Creek | Fair | 204.1 ft | 550 | 1986 |
| FM over Creek | Fair | 21.0 ft | 490 | 1970 |
| FM over Crane Creek | Fair | 28.9 ft | 400 | 1993 |
| Local over Mud Creek | Fair | 128.0 ft | 383 | 1983 |
| FM over Sweetland Creek | Fair | 20.0 ft | 380 | 1948 |
| FM over Small Stream | Fair | 21.0 ft | 320 | 1950 |
| Local over Muscatine Slough | Fair | 128.0 ft | 239 | 1975 |
| FM over Creek | Fair | 24.9 ft | 180 | 1954 |
| FM over Pine Creek | Fair | 152.9 ft | 180 | 1963 |
| Local over Mud Creek | Fair | 83.0 ft | 155 | 1967 |
| FM over Big Slough Drainage Dit. | Fair | 103.0 ft | 150 | 1968 |
| FM over Hockeys Slough | Fair | 77.1 ft | 130 | 1977 |
| FM over Wapsinonoc Creek | Fair | 191.9 ft | 110 | 1982 |
| Local over Creek | Fair | 24.9 ft | 104 | 1956 |
| Local over Mud Creek | Fair | 128.0 ft | 104 | 1988 |
| Local over Creek | Fair | 28.9 ft | 80 | 1958 |
| FM over Sweetland Creek | Fair | 21.0 ft | 80 | 1937 |
| Local over Creek | Fair | 24.0 ft | 73 | 1948 |
| Local over Drainage Ditch 13 | Fair | 127.0 ft | 62 | 1968 |
| Local over Wapsipinicon Creek | Fair | 182.1 ft | 62 | 1975 |
| FM over Pine Creek | Fair | 62.0 ft | 60 | 1949 |
| Local over Creek | Fair | 59.1 ft | 60 | 1967 |
| FM over Wapsie Creek | Fair | 34.1 ft | 60 | 1967 |
| Local over Big Slough Creek | Fair | 128.0 ft | 50 | 1985 |
| Local over Big Slough Creek | Fair | 128.0 ft | 47 | 1989 |
| Local over Harvey Ditch | Fair | 66.9 ft | 45 | 1937 |
| Local over Branch Big Slough Creek | Fair | 23.0 ft | 45 | 1985 |
| Local over Drainage | Fair | 77.1 ft | 41 | 1971 |
| Local over Creek | Fair | 24.9 ft | 40 | 1970 |
| FM over Big Slough Creek | Fair | 127.0 ft | 40 | 1980 |
| Local over Creek | Fair | 21.0 ft | 30 | 1955 |
| Local over Drainage | Fair | 22.0 ft | 26 | 1947 |
| Local over Creek | Fair | 22.0 ft | 15 | 1951 |
| X 54 over Sugar Creek | Fair | 177.2 ft | 10 | 1971 |
| US 61 & Ia 22 over Mad Creek | Good | 226.0 ft | 18,300 | 1984 |
| US 61 over Hershey AVE | Good | 162.7 ft | 12,100 | 2008 |
| US 61 NB over Pine Creek | Good | 149.9 ft | 5,200 | 1990 |
| US 61 SB over Pine Creek | Good | 149.9 ft | 5,200 | 1997 |
| US 6 over West Wapsinonoc Creek | Good | 179.5 ft | 4,410 | 2013 |
| Ia 22 over Cedar River | Good | 965.9 ft | 3,650 | 1987 |
| US 61 NB over Muscatine Slough | Good | 133.9 ft | 3,500 | 2002 |
| US 61 SB over Muscatine Slough | Good | 133.9 ft | 3,500 | 2002 |
| 200th ST over Mud Creek | Good | 103.0 ft | 3,100 | 2008 |
| F58 (hwy 927) over Mud Creek | Good | 141.1 ft | 3,100 | 2013 |
| Ia 22 over Rock Creek | Good | 24.0 ft | 3,050 | 1984 |
| Ia 22 & 70 over Wapsinonoc Creek | Good | 230.0 ft | 2,830 | 1988 |
| Ia 70 over Goshen Ditch | Good | 89.9 ft | 2,660 | 2007 |
| Ia 22 over Drainage Ditch | Good | 21.0 ft | 1,730 | 1984 |
| Ia 22 over Drainage Ditch | Good | 21.0 ft | 1,730 | 1984 |
| Ia 22 over Over Rr Spur (dme Rr) | Good | 204.1 ft | 1,490 | 1996 |
| FM over Creek | Good | 24.9 ft | 890 | 2001 |
| FM over Small Stream | Good | 24.9 ft | 850 | 2001 |
| 112th ST over Sugar Creek | Good | 167.0 ft | 733 | 2000 |
| FM over Mud Creek | Good | 167.0 ft | 620 | 2002 |
| Local over Otter Creek | Good | 103.0 ft | 280 | 1996 |
| Burlington RD over Kincaid Creek | Good | 73.2 ft | 260 | 2015 |
| 110th ST over Creek | Good | 25.9 ft | 227 | 2010 |
| 110th ST over Creek | Good | 29.9 ft | 227 | 2011 |
| FM over Pine Creek | Good | 123.0 ft | 200 | 2008 |
| 110th ST over Creek | Good | 28.9 ft | 176 | 2018 |
| FM over Creek | Good | 78.1 ft | 170 | 2005 |
| Local over Mud Creek | Good | 128.0 ft | 166 | 1996 |
| Saulsbury RD over Chicken Creek | Good | 232.9 ft | 145 | 2013 |
| FM over Dd 2 | Good | 116.1 ft | 110 | 2004 |
| F70 155th ST over Small Creek | Good | 24.9 ft | 110 | 2019 |
| FM over Goshien Drainage Ditch | Good | 25.9 ft | 110 | 2010 |
| N Isett AVE over Small Creek | Good | 24.0 ft | 100 | 2019 |
| Local over Pike Run | Good | 128.0 ft | 91 | 2004 |
| Douglas AVE over Pike Drainage Ditch | Good | 110.9 ft | 91 | 2021 |
| 135th ST over Branch Of Mud Creek | Good | 28.9 ft | 91 | 2023 |
| 120th ST over Creek | Good | 28.9 ft | 91 | 2020 |
| Lindle AVE over Creek | Good | 27.9 ft | 82 | 2017 |
| York AVE over Mud Creek | Good | 101.0 ft | 82 | 2022 |
| Local over Creek | Good | 24.9 ft | 82 | 1996 |
| Local over Creek | Good | 21.0 ft | 80 | 2004 |
| FM over Creek | Good | 90.9 ft | 70 | 2005 |
| Local over Yellow Creek | Good | 24.9 ft | 60 | 2004 |
| N Isett AVE over Little Mosquito Creek | Good | 101.0 ft | 53 | 2024 |
| Local over Dd 2 | Good | 70.9 ft | 51 | 2010 |
| 180th ST over Pine Creek | Good | 112.9 ft | 45 | 2016 |
| Local over Pike Run Creek | Good | 24.9 ft | 40 | 2003 |
| Local over Wapsinonoc Creek | Good | 128.0 ft | 30 | 2006 |
| 150th ST over Little Mosquito Creek | Good | 33.1 ft | 30 | 2023 |
| Holly AVE over Goshen Drainage Ditch | Good | 39.0 ft | 25 | 2023 |
| FM over Honey Creek | Good | 24.9 ft | 20 | 2003 |
| Local over Drainage Ditch 2 | Good | 28.9 ft | 15 | 2004 |