| US 63 over Trib to Wapsipinicon | 2001 | 5,100 | Good |
| Ia 24 over Plum Creek | 2000 | 4,290 | Good |
| US 63 over E. Fk Wapsipinicon River | 1962 | 4,280 | Fair |
| US 63 over Spring Creek | 1971 | 4,280 | Fair |
| US 18 & Ia 346 over U.S. 63 | 2002 | 4,130 | Good |
| Ia 346 over Cedar River | 1984 | 3,340 | Fair |
| Ia 24 over East Wapsipinicon River | 2000 | 3,150 | Good |
| US 18 over East Wapsipinicon River | 1983 | 3,150 | Fair |
| US 18 over Br Little Wapsipinicon R | 1934 | 3,030 | Fair |
| US 18 over Little Wap River Ovrflw | 2001 | 3,030 | Good |
| US 18 over Little Wapsipinicon Rvr | 1964 | 3,030 | Fair |
| US 18 over Plum Creek | 1983 | 2,920 | Good |
| Ia 24 over Crane Creek | 2006 | 2,690 | Good |
| Ia 24 over Drainage Ditch | 2006 | 2,690 | Good |
| Local Rd over Drainage Ditch | 1953 | 2,642 | Poor |
| U.S. 18 over Stream | 1977 | 2,610 | Good |
| US 18 over Stream | 1977 | 2,610 | Fair |
| US 18 over Stream | 1983 | 2,610 | Fair |
| US 18 over Stream | 2001 | 2,610 | Good |
| Ia 346 over Little Cedar Creek | 1991 | 2,460 | Good |
| US 18 EB & 63 SB over Imrr & B-57 | 2002 | 2,440 | Good |
| US 18 WB & 63 NB over Imrr and B-57 | 2002 | 2,440 | Good |
| Local Rd over Drainage Ditch | 1954 | 2,396 | Poor |
| US 18 over Wapsipinicon Overflow | 1978 | 2,280 | Good |
| US 18 over Wapsipinicon River | 1978 | 2,280 | Fair |
| Ia 346 over Stream | 1957 | 2,150 | Fair |
| Ia 346 over Two Mile Creek | 1984 | 2,150 | Good |
| US 18 over Winters Lake Overflow | 1929 | 2,130 | Fair |
| Ia 346 over US 218 | 2003 | 2,120 | Good |
| US 18 over Beaver Creek | 1978 | 2,120 | Fair |
| US 18 over Little Cedar River | 1966 | 2,120 | Fair |
| Ia 24 over Dry Run Creek | 2013 | 1,930 | Good |
| Ia 346 over Etter Creek | 2017 | 1,470 | Good |
| Ia 346 over Wapsipinicon River | 1984 | 1,470 | Fair |
| US 63 NB over US 18 | 2000 | 1,445 | Good |
| US 63 SB over US 18 | 2000 | 1,400 | Good |
| Local over Spring Branch | 2000 | 1,169 | Good |
| Local Rd over Drainage Ditch | 1927 | 1,051 | Poor |
| FM over Small Stream | 1984 | 992 | Fair |
| FM over Bohemian Creek | 2001 | 972 | Good |
| E Hamilton St over Small Stream | 1980 | 937 | Poor |
| FM over Spring Creek | 1988 | 795 | Fair |
| V48 Roanoke Ave over Plum Creek | 2021 | 795 | Good |
| B57 (220TH St) over Wapsipinicon | 2014 | 786 | Good |
| FM over Little Wapsipinicon | 1967 | 786 | Poor |
| V56 Union over Little Turkey | 2008 | 717 | Good |
| FM over Little Wapsipinicon Rvr | 2007 | 697 | Good |
| 225TH Street over US 18 & 63 | 2002 | 687 | Good |
| Weber St over Elk Creek | 2020 | 669 | Good |
| FM over Crane Creek | 1951 | 648 | Fair |
| US 218 over Drainage Ditch | 1959 | 639 | Poor |
| La Salle Ave over US 63 | 2002 | 628 | Good |
| FM over Simpson Creek | 1986 | 589 | Fair |
| FM over Little Cedar | 1964 | 579 | Poor |
| FM over Branch Two Mile Creek | 1997 | 550 | Fair |
| FM over Two Mile Creek | 1997 | 550 | Good |
| FM over Wapsipinicon River | 1956 | 550 | Poor |
| V14 over Small Stream | 1957 | 550 | Fair |
| V48 Quinlan Ave over East Fork Wapsipinicon | 2022 | 540 | Good |
| B54 240TH St over E Fork Wapsipinicon | 2017 | 511 | Good |
| B54 240TH over E Fork Wapsipinicon | 2018 | 511 | Good |
| FM over Br Little Turkey River | 1965 | 511 | Fair |
| FM over Little Turkey River | 1965 | 511 | Fair |
| Local over Br Little Turkey Creek | 2004 | 511 | Fair |
| FM over Branch Wapsipinicon Rvr | 1991 | 501 | Good |
| FM over Wapsipinicon River | 1957 | 501 | Poor |
| FM over Crane Creek | 1966 | 432 | Poor |
| FM over E Fork Wapsipinicon | 1999 | 383 | Good |
| E Spring St over Small Stream | 1920 | 349 | Poor |
| Charles City Rd over Small Stream | 1930 | 300 | Fair |
| 110TH Street over Small | 1969 | 295 | Fair |
| B22 110TH St over Small Stream | 2016 | 295 | Good |
| Jackson Ave over Small Stream | 2005 | 291 | Good |
| FM over Crane Creek | 1971 | 275 | Poor |
| FM over Little Wapsipinicon Rvr | 1961 | 265 | Poor |
| T76 Cheyenne over Unnamed Stream | 2019 | 255 | Good |
| FM over Crane Creek | 1998 | 246 | Fair |
| FM over Spring Creek | 1992 | 246 | Fair |
| FM over Branch Turkey River | 1992 | 216 | Fair |
| FM over Little Cedar | 1965 | 196 | Poor |
| Washington Ave over Plum Creek | 2009 | 189 | Good |
| FM over Little Wapsipinicon | 2009 | 187 | Good |
| Kenwood Ave over East Wapsipinicon River | 2022 | 187 | Good |
| FM over Crane Creek | 1959 | 157 | Poor |
| FM over Little Turkey | 2010 | 157 | Good |
| FM over Little Turkey Creek | 2004 | 157 | Good |
| FM over Little Turkey River | 1995 | 157 | Good |
| Local over Creek | 2005 | 157 | Good |
| Local over East Wapsipinicon River | 1989 | 157 | Good |
| Local over Creek | 2006 | 154 | Good |
| Local over Small Stream | 1975 | 135 | Poor |
| FM over Br Little Wapsipinicon | 1957 | 118 | Poor |
| FM over Spring Branch | 1951 | 118 | Poor |
| Local over Creek | 2000 | 118 | Good |
| Local over East Wapsipinicon River | 1990 | 118 | Good |
| Local over Creek | 1996 | 113 | Good |
| Local over Gizzard Creek | 1997 | 113 | Fair |
| FM over E Fork Wapsipinicon | 1952 | 108 | Fair |
| FM over Unnamed Creek | 1997 | 108 | Good |
| Local over Creek | 1983 | 104 | Fair |
| Local over Creek | 1993 | 104 | Fair |
| Local over East Wapsipinicon | 2002 | 104 | Good |
| Local over Plum Creek | 1994 | 104 | Fair |
| Local over Small Stream | 1987 | 104 | Fair |
| Local over Wapsipinicon River | 2001 | 104 | Good |
| Exeter Ave over Creek | 2013 | 98 | Good |
| FM over Branch Cedar River | 2001 | 98 | Fair |
| FM over Cedar Creek | 1960 | 98 | Poor |
| FM over Wapsipinicon River | 1947 | 98 | Fair |
| Local over East Wapsipinicon | 1900 | 98 | Poor |
| T 76 Cheyenne over Wapsipinicon River | 2019 | 98 | Good |
| Local over Creek | 1970 | 91 | Fair |
| Local over Small | 1979 | 91 | Poor |
| Local over Spring Branch | 1998 | 91 | Good |
| Local over Spring Branch | 1995 | 91 | Fair |
| Local over Spring Branch Creek | 1961 | 91 | Poor |
| Local over Wapsipinicon | 1956 | 91 | Poor |
| 170TH St over Small Stream | 2021 | 88 | Good |
| Cheyenne over Unnamed Creek | 2021 | 88 | Good |
| FM over Creek | 1976 | 88 | Poor |
| FM over Little Wapsipinicon Rvr | 1980 | 88 | Good |
| Local over Elk Creek | 1975 | 88 | Fair |
| Local over Little Wapsipinicon Rvr | 1980 | 88 | Poor |
| Local over Spring Creek | 1954 | 88 | Poor |
| Local over Branch Crane Creek | 1970 | 82 | Poor |
| Local over Crane River | 1982 | 82 | Good |
| Local over Creek | 1969 | 82 | Poor |
| Local over Small | 2009 | 82 | Good |
| Local over Small | 1983 | 82 | Fair |
| Local over Small Stream | 1975 | 82 | Poor |
| Local-co Line over Wapsipinicon River | 1991 | 82 | Good |
| Ridgeway Ave over E Fork Wapsipinicon Rive | 2023 | 82 | Good |
| FM over Creek | 2006 | 79 | Fair |
| FM over Creek | 1990 | 79 | Fair |
| Hickory over Spring Branch Creek | 2023 | 79 | Good |
| 220TH St over Creek | 2006 | 73 | Good |
| Exeter over Creek | 2018 | 73 | Good |
| Local over Crane Creek | 1989 | 73 | Fair |
| Local over Creek | 1999 | 73 | Good |
| Local over Creek | 1960 | 73 | Poor |
| Local over Dry Run | 1988 | 73 | Fair |
| Local over E Fork Wapsipinicon Rvr | 1971 | 73 | Poor |
| Local over Plum Creek | 1989 | 73 | Good |
| Local over Small Stream | 1977 | 73 | Fair |
| Local over Two Mile Creek | 1996 | 73 | Fair |
| FM over Crane Creek | 1960 | 69 | Poor |
| FM over Little Wapsi | 1974 | 69 | Good |
| FM over Simpson Creek | 1988 | 69 | Fair |
| Local over Creek | 1970 | 62 | Fair |
| Local over Creek | 1997 | 62 | Good |
| Local over Creek | 1986 | 62 | Fair |
| Local over Dry Run | 2001 | 62 | Good |
| Local over Little Turkey River | 1966 | 62 | Poor |
| Local over Little Wapsipinicon Rvr | 1959 | 62 | Fair |
| Local over Plum Creek | 1962 | 62 | Poor |
| Local over Simpson Creek | 1965 | 62 | Poor |
| Local over Stream | 1981 | 62 | Good |
| V62 Windsor Ave over Spring Creek | 2014 | 62 | Good |
| B33 170TH St over Creek | 2015 | 59 | Good |
| FM over East Wapsipinicon River | 1981 | 59 | Poor |
| FM over Wapsipinicon River | 1967 | 59 | Fair |
| Local over Br E Fk Wapsipinicon Rvr | 1982 | 59 | Poor |
| Local over Br E Fork Wapsipinicon | 1986 | 59 | Fair |
| Local over Creek | 2004 | 59 | Good |
| Local over Little Wapsipinicon | 1971 | 59 | Poor |
| 100TH St over Stream | 2024 | 53 | Good |
| 290TH Street over US 218 | 2002 | 51 | Good |
| Local over Creek | 1971 | 51 | Poor |
| Local over Creek | 2010 | 51 | Good |
| Local over Creek | 2005 | 51 | Good |
| Local over East Wapsipinicon River | 1995 | 51 | Fair |
| Local over East Wapsipinicon River | 1963 | 51 | Poor |
| Local over Horton Creek | 1981 | 51 | Poor |
| Local over Plum Creek | 2004 | 51 | Fair |
| Local over Simpson Creek | 1983 | 51 | Fair |
| Local over Spring Creek | 1990 | 51 | Fair |
| Local over Stream | 1962 | 51 | Poor |
| B 66 (290TH St) over Wapsipinicon | 2013 | 49 | Good |
| FM over Little Cedar River | 1971 | 49 | Fair |
| FM over Stream | 1981 | 49 | Poor |
| Local over Creek | 2004 | 49 | Good |
| Local over Creek | 1952 | 49 | Fair |
| Local over Dry Run Creek | 1990 | 49 | Good |
| Local over Little Wapsipinicon | 1976 | 49 | Fair |
| Local over Little Wapsipinicon Rvr | 1975 | 49 | Poor |
| Local over Small | 1978 | 49 | Fair |
| Beaumont Ave over Branch Wapsipinicon Rvr | 2016 | 47 | Good |
| Local over Creek | 1953 | 47 | Poor |
| Local over Creek | 1975 | 47 | Poor |
| Local over Creek | 1999 | 47 | Fair |
| Local over Little Turkey | 1969 | 47 | Poor |
| Local over Little Turkey | 1978 | 47 | Fair |
| Local over Small | 1983 | 47 | Poor |
| Local over Spring Creek | 1991 | 47 | Poor |
| B 33 170TH St over Beaver Creek | 2024 | 45 | Good |
| FM over Beaver Creek | 1961 | 44 | Poor |
| FM over E Fork Wapsipinicon Rvr | 1962 | 44 | Poor |
| FM over Small | 2009 | 44 | Good |
| V28 Jasper over Br E Fork Wapsipinicon R | 2024 | 42 | Good |
| 190TH St over Plum Creek | 2020 | 41 | Good |
| Ivanhoe Ave over E Wapsipinicon River | 2016 | 41 | Fair |
| Local over Beaver Creek | 1979 | 41 | Fair |
| Local over Crane Creek | 1980 | 41 | Poor |
| Local over Creek | 1970 | 41 | Poor |
| Local over Little Turkey River | 2002 | 41 | Fair |
| Local over Small | 1983 | 41 | Fair |
| Local over Small | 1978 | 41 | Poor |
| Local over Small Stream | 1985 | 41 | Fair |
| Local over Small Stream | 2000 | 41 | Good |
| Local over Spring Branch | 2010 | 41 | Fair |
| Local over Spring Branch | 2005 | 41 | Good |
| Nolan over Creek | 2020 | 41 | Good |
| Odessa over Small | 2007 | 41 | Good |
| Vanderbilt over Small Stream | 2023 | 41 | Good |
| FM over Two Mile Creek | 1975 | 39 | Good |
| Local over Small | 1983 | 39 | Fair |
| Odessa Ave over East Wapsipinicon River | 2023 | 39 | Good |
| Local over Crane Creek | 1971 | 35 | Fair |
| Local over Creek | 1995 | 35 | Fair |
| Local over Creek | 1995 | 35 | Fair |
| Local over Creek | 1970 | 35 | Poor |
| Local over Small Creek | 1986 | 35 | Poor |
| Local over Wapsipinicon River | 2013 | 35 | Good |
| V 28 Jasper over Br E Fk Wapsipinicon | 2018 | 35 | Good |
| Local over Little Turkey River | 2007 | 34 | Good |
| Local over Small Stream | 1982 | 34 | Fair |
| Local over Small Stream | 1985 | 34 | Fair |
| Local over Spring Branch Creek | 2007 | 34 | Good |
| Local over Beaver Creek | 2004 | 33 | Fair |
| 100TH St over Elk Creek | 2014 | 30 | Good |
| 140TH St over Creek | 2000 | 30 | Good |
| Local over Br E Wapsipinicon River | 1990 | 30 | Good |
| Local over Creek | 1971 | 30 | Poor |
| Local over Creek | 2005 | 30 | Good |
| Local over Dry Run | 1991 | 30 | Fair |
| Local over E Fk Wapsipinicon River | 2003 | 30 | Good |
| Local over East Wapsipinicon River | 1988 | 30 | Good |
| Local over Elk Creek | 1991 | 30 | Good |
| Local over Horton Creek | 1978 | 30 | Poor |
| Local over Little Wapsipinicon Rvr | 1952 | 30 | Poor |
| Local over Little Wapsipinicon Rvr | 1990 | 30 | Good |
| Local over Simpson Creek | 1951 | 30 | Fair |
| Local over Small | 1976 | 30 | Poor |
| Local over Small Stream | 2010 | 30 | Good |
| 115TH St over Branch Wapsipinicon Rvr | 2017 | 29 | Good |
| 260TH St over Gizzard Creek | 2000 | 29 | Fair |
| Addison Ave over Creek | 2019 | 29 | Good |
| FM over Br Wapsipinicon River | 1960 | 29 | Poor |
| FM over Branch Elk Creek | 1998 | 29 | Good |
| FM over Stream | 1981 | 29 | Fair |
| FM over Wapsipinicon River | 1996 | 29 | Good |
| Local over Creek | 1972 | 29 | Poor |
| Local over Creek | 2006 | 29 | Good |
| Local over Small Stream | 1985 | 29 | Fair |
| Local over Small Stream | 1994 | 29 | Fair |
| Local over Small Stream | 1985 | 29 | Poor |
| Local over Spring Creek | 1982 | 29 | Fair |
| Local over Wapsipinicon River | 1955 | 29 | Poor |
| Local over Small | 1988 | 27 | Poor |
| 250TH St over Two Mile Creek | 2008 | 26 | Good |
| 260TH over Creek | 2022 | 26 | Good |
| Local over Br Wasipinicon River | 2008 | 26 | Good |
| Local over Creek | 2007 | 26 | Fair |
| Local over Creek | 1989 | 26 | Fair |
| Local over Creek | 2010 | 26 | Good |
| Local over E Fork Wapsipinicon Rvr | 2011 | 26 | Good |
| Local over Little Wapsipinicon Rvr | 1980 | 26 | Fair |
| Local over Small | 2009 | 26 | Good |
| Local over Small Stream | 1987 | 26 | Fair |
| FM over Small | 1978 | 25 | Poor |
| Local over Branch Horton Creek | 1952 | 25 | Poor |
| Local over Little Turkey | 1975 | 25 | Fair |
| Local over Small Stream | 1987 | 25 | Fair |
| Local over Two Mile Creek | 1977 | 25 | Fair |
| Local over Creek | 1975 | 21 | Poor |
| Local over Creek | 2004 | 21 | Good |
| Local over Simpson Creek | 1981 | 21 | Fair |
| Local over Spring Branch Creek | 1972 | 21 | Poor |
| Local over Spring Branch Creek | 1987 | 21 | Poor |
| Local over Wapsipinicon River | 1973 | 21 | Fair |
| Local over Wapsipinicon River | 1957 | 21 | Poor |
| Odessa over Plum Creek | 2000 | 21 | Good |
| 220TH St over Simpson Creek | 2006 | 20 | Good |
| FM over Small | 1978 | 20 | Fair |
| Local over Creek | 1968 | 20 | Poor |
| Local over Creek | 1991 | 20 | Fair |
| 180TH St over Crane Creek River | 2023 | 16 | Good |
| Irwin over Creek | 2024 | 16 | Good |
| Local over Creek | 2001 | 16 | Good |
| Local over Little Cedar Creek | 2005 | 16 | Fair |
| Local over Plum Creek | 1948 | 16 | Poor |
| Local over Plum Creek | 1996 | 16 | Fair |
| Local over Small | 1978 | 16 | Fair |
| Local over Small Stream | 1999 | 16 | Good |
| Local over Small Stream | 1982 | 15 | Fair |
| Local over Spring Branch Creek | 1981 | 15 | Poor |
| Local over Small Stream | 1963 | 11 | Poor |
| Local over Small Stream | 1982 | 11 | Poor |
| Farm Drive over Branch Elk Creek | 1974 | 10 | Poor |
| Local over Creek | 1971 | 10 | Poor |
| Local over Creek | 1973 | 10 | Poor |
| B66 290TH St over Spring Creek | 2019 | 5 | Good |
| Local over Spring Branch Creek | 1980 | 5 | Poor |
| Young Way over Dry Run | 2000 | 5 | Fair |