| M-15 over Cass River | 2015 | 14,550 | Good |
| M-46 over Cheboygan & Branches Drn | 1939 | 6,701 | Poor |
| M-81 over Marsh Drain | 2007 | 6,273 | Good |
| M-25 over (no Name) Drain | 1932 | 5,571 | Fair |
| M-25 over Akron Drain | 1985 | 5,571 | Fair |
| M-25 over Allen Drain | 1985 | 5,571 | Fair |
| M-25 over Quanicassee River | 2013 | 5,571 | Good |
| M-25 over Wisner Drain | 1985 | 5,571 | Fair |
| M-24 over Cass River | 1941 | 5,516 | Fair |
| M-46 over Cass River | 1934 | 5,255 | Fair |
| M-46 over Houghton Creek | 1939 | 5,255 | Poor |
| East Dayton Road over Cass River | 1976 | 5,144 | Fair |
| M-25 over Wiscoggin Creek | 2006 | 5,044 | Fair |
| M-15 over Goodings Creek | 2000 | 4,811 | Fair |
| M-24 over Kreger Drain | 1941 | 4,188 | Good |
| M-24 over Kreger Drain | 1941 | 4,188 | Fair |
| Millington Road over Millington Creek | 1990 | 4,115 | Fair |
| M-46 over Sucker Creek | 2012 | 4,040 | Good |
| Chambers Road over Cass River | 2009 | 3,900 | Good |
| Birch Run Road over Thetford-arbela I/c Drn | 1978 | 3,540 | Good |
| Bray Road over Cass River | 1965 | 3,520 | Fair |
| M-46 over Sucker Creek | 1967 | 3,520 | Fair |
| Cemetery Road over Cass River | 2015 | 2,948 | Good |
| Deckerville Road over Cass River | 1966 | 2,920 | Fair |
| Deckerville Road over White Creek I/c Drain | 1930 | 2,900 | Fair |
| M-15 over Cheboyganing Creek | 1929 | 2,842 | Poor |
| M-15 over Sheboygan Drain | 2009 | 2,842 | Good |
| Ormes Road over Perry Creek | 1982 | 2,800 | Fair |
| Millington Road over Perry Creek | 1980 | 2,715 | Fair |
| Deckerville Road over Mud Creek Drain Outlet | 1980 | 2,550 | Fair |
| M-46 over White Creek #2 | 1966 | 2,547 | Poor |
| M-81 over N Branch Cass River | 1977 | 2,500 | Fair |
| Cemetery Road over White Creek I/c Drain | 1986 | 2,370 | Good |
| Van Buren Road over Sheboygan 1/C Drain | 2020 | 2,348 | Good |
| Ormes Road over Millington Creek | 2017 | 2,230 | Good |
| Deckerville Road over Butternut Creek Drain | 1971 | 2,095 | Fair |
| Fostoria Road over Fostoria I/c Drain | 1987 | 2,080 | Fair |
| Bradleyville Road over Northwest Drain | 1972 | 2,000 | Fair |
| Bevens Road over Butternut Creek Drain | 1971 | 1,970 | Fair |
| Belsay Road over Frost I/c Drain | 1984 | 1,950 | Fair |
| Deckerville Road over South Br White Creek | 1993 | 1,920 | Fair |
| Bevens Road over Sucker Creek | 1992 | 1,880 | Good |
| Gilford Road over Northwest Drain | 1972 | 1,865 | Fair |
| Bay City-forestvil over Wiscoggin Drain | 2018 | 1,854 | Good |
| M-24 over Bach Creek | 1983 | 1,825 | Fair |
| M-24 over Gilbert Br Wiscoggin Drn | 1984 | 1,825 | Good |
| M-24 over Wiscoggin Creek | 1983 | 1,825 | Fair |
| M-24 over Wiscoggin Creek | 1983 | 1,825 | Fair |
| Gilford Road over Br 1 Northwest Drain | 1972 | 1,700 | Poor |
| Vassar Road over Perry Creek | 1985 | 1,690 | Good |
| M-138 over Allen Drain | 1968 | 1,678 | Fair |
| Fairgrove Road over Allen Extension Drain | 1971 | 1,650 | Fair |
| Bradleyville Road over Northwest Drain Outlet 1 | 1972 | 1,610 | Fair |
| Caine Road over Cass River | 1982 | 1,600 | Fair |
| Vassar Road over Millington Creek | 1930 | 1,565 | Fair |
| Brown Road over Donigan Drain | 1963 | 1,520 | Fair |
| Vassar Road over Gooding Creek | 1987 | 1,440 | Good |
| Fostoria Road over Br Evergreen Creek | 1991 | 1,420 | Good |
| Kingston Road over Clark Drain Extension | 1986 | 1,390 | Good |
| Hurds Corner Road over Sucker Creek Drain | 1960 | 1,375 | Fair |
| Millington Road over Evergreen Creek | 1992 | 1,315 | Fair |
| M-138 over No Name Drain | 1968 | 1,305 | Fair |
| M-138 over Northwest Drain | 1969 | 1,305 | Fair |
| Dickerson Road over Allen Drain | 1971 | 1,300 | Good |
| Dickerson Road over Latimer Or Allen Relief | 2009 | 1,300 | Good |
| Bevens Road over Clark Drain Extension | 1984 | 1,245 | Fair |
| Bradleyville Road over Northwest Drain Outlet 2 | 1972 | 1,240 | Fair |
| Gilford Road over Hobart Or Br 3 NW Drain | 1971 | 1,237 | Good |
| Vassar Road over Perry Creek | 1980 | 1,220 | Fair |
| M-138 over Northwest Drain | 1969 | 1,201 | Fair |
| Bay City-forestvil over State I/c Drain | 1984 | 1,198 | Fair |
| Dickerson Road over State & Colling I/c Drn | 1984 | 1,125 | Fair |
| Vassar Road over Hobart Or Br 3 NW Drain | 1971 | 1,000 | Good |
| Dutcher Road over Northwest Drain Outlet 1 | 1970 | 980 | Fair |
| Cottrell Road over Saginaw Valley RR | 2001 | 965 | Fair |
| Barnes Road (east) over Perry Creek | 1965 | 945 | Fair |
| Barnes Road (mid) over Perry Creek | 1963 | 945 | Fair |
| Barnes Road (west) over Perry Creek | 1978 | 945 | Fair |
| Dickerson Road over Wiscoggin Drain | 1988 | 934 | Fair |
| Forest Road over Wiscoggin Drain | 1959 | 908 | Fair |
| Caine Road over Gooding Creek | 2017 | 905 | Good |
| Dickerson Road over Southgate Drain | 1984 | 900 | Fair |
| White Creek Road over White Creek Drain #2 | 1980 | 800 | Fair |
| Hanes Road over Donigan Drain | 1979 | 755 | Good |
| Akron Road over Southgate Drain | 1971 | 700 | Fair |
| Phillips Road over White Creek I/c Drain | 1973 | 680 | Good |
| Dodge Road over Cass River | 1978 | 655 | Fair |
| Vassar Road over Northwest Drain | 1971 | 650 | Good |
| Luder Road over Tuscola & Saginaw Bay RR | 1984 | 649 | Fair |
| Higgins Road over Br 1 Northwest Drain | 1971 | 600 | Fair |
| White Creek Road over White Creek Drain #2 | 1993 | 600 | Good |
| Loomis Road over Walker-hayes Drain | 1958 | 550 | Fair |
| Hurds Corner Road over Butternut Creek Drain | 1971 | 544 | Fair |
| Hurds Corner Road over Cass River | 1978 | 544 | Fair |
| Hurds Corner Road over White Creek | 1978 | 544 | Fair |
| Frankford Road over Sucker Creek | 2016 | 540 | Good |
| Snover Road over Beach Drain | 1935 | 540 | Fair |
| Vassar Road over Northwest Drain | 1971 | 530 | Fair |
| Englehart Road over White Creek I/c Drain | 1962 | 525 | Fair |
| Riley Road over Sucker Creek | 1973 | 520 | Fair |
| Oak Road over Gooding Creek | 1965 | 510 | Poor |
| Akron Road over Northwest Drain Outlet 3 | 1962 | 500 | Fair |
| Shays Lake Road over Sucker Creek Drain | 2018 | 480 | Good |
| Van Buren Road over Br 1 Squaw Ck-gilford Dn | 1980 | 450 | Good |
| Koepfgen Road over Center B Drain | 1979 | 440 | Fair |
| Akron Road over Wiscoggin Drain | 1971 | 430 | Fair |
| Hurds Corner Road over Brkfld Ext-columbia-bkfd | 1968 | 430 | Fair |
| Dodge Road over White Creek I/c Drain | 1978 | 420 | Fair |
| Bay Park Road over Akron Centerline Drain | 1972 | 412 | Fair |
| Bay Park Road over Allen Drain | 1972 | 412 | Good |
| Bay Park Road over Southgate Drain Outlet 2 | 1990 | 412 | Good |
| Bay Park Road over Walker-hayes Drain | 1972 | 412 | Fair |
| Ringle Road over Allen Extension Drain | 1994 | 410 | Fair |
| Quanicassee Road over Northwest Drain Outlet 2 | 1994 | 405 | Fair |
| Ringle Road over Allen Extn Drain | 1964 | 390 | Fair |
| Ringle Road over Allen Extn Drain | 1965 | 390 | Fair |
| Blackmore Road over Evergreen Creek | 1982 | 380 | Fair |
| Dutcher Road over Vccm&s Drain | 1980 | 370 | Fair |
| Akron Road over State & Collins I/c Drn | 1970 | 350 | Good |
| Elmwood Road over Northwest Drain Outlet 3 | 2000 | 350 | Good |
| Shabbona Road over White Creek I/c Drain | 1968 | 350 | Fair |
| Ringle Road over Allen Extn Drain | 1979 | 345 | Fair |
| Ringle Road over Allen Extn Drain | 1979 | 345 | Good |
| Millington Road over Dead Creek | 2017 | 342 | Good |
| Boy Scout Road over Sucker Creek | 1935 | 335 | Fair |
| Hanes Road over Gooding Creek | 1979 | 335 | Good |
| Shabbona Road over White Creek I/c Drain | 1972 | 335 | Good |
| Buell Road over Millington Creek | 1930 | 330 | Fair |
| Merry Road over Allen Extn Drain | 1979 | 330 | Fair |
| Murray Road over White Creek | 1979 | 320 | Fair |
| Elmwood Road over Center B Drain | 1979 | 310 | Good |
| Gotham Road over Wiscoggin Drain | 1971 | 300 | Fair |
| Loren Road over Perry Creek | 2006 | 300 | Good |
| Thomas Road over Sellars Drain | 1960 | 300 | Fair |
| Kirk Road over Br #1 Northwest Drain | 1972 | 295 | Fair |
| Vassar Road over Southgate Drain Outlet | 1990 | 290 | Fair |
| Lee Hill Road over Sucker Creek Drain | 2021 | 285 | Good |
| Hoppe Road over State & Colling I/c Drn | 1972 | 260 | Fair |
| Division Street over Huron & Eastern RR | 1934 | 250 | Fair |
| French Road over Bach Drain | 1981 | 250 | Fair |
| Swaffer Road over Colts Creek | 1979 | 250 | Fair |
| Bradford Road over Northwest Drain Outlet 1 | 1972 | 240 | Fair |
| Old State Road over Quanicassee River Cut | 2016 | 239 | Good |
| Elmwood Road over Allen Drain | 1992 | 225 | Good |
| Elmwood Road over Southgate Drain | 1967 | 225 | Fair |
| Ringle Road over Wiscoggin Drain | 1996 | 225 | Good |
| Shreeves Road over Allen Extn Drain | 1967 | 220 | Good |
| Elmwood Road over North Br Cass River | 2003 | 215 | Good |
| Thomas Road over Wiscoggin Drain | 1984 | 205 | Good |
| Elmwood Road over Wiscoggin Drain | 2013 | 202 | Good |
| Slack Road over Br. #1 Northwest Drain | 1965 | 200 | Fair |
| Loren Road over Millington Creek | 1979 | 190 | Fair |
| Albin Road over Sucker Creek | 1990 | 185 | Good |
| Hoppe Road over Columbian Drain | 1967 | 185 | Fair |
| Garner Road over Northwest Drain | 1972 | 180 | Fair |
| Thomas Road over Allen Ext Drain | 2014 | 175 | Good |
| Darbee Road over Vccm&s Drain | 1962 | 174 | Fair |
| Old State Road over Northwest Drain Outlet 1 | 2010 | 170 | Good |
| Plain Road over Butternut Creek Drain | 1977 | 170 | Fair |
| Swaffer Road over Perry Creek | 1974 | 170 | Fair |
| Bradford Road over Northwest Drain Outlet 2 | 1963 | 165 | Fair |
| Gilford Road over Butternut Creek Drain | 1979 | 165 | Fair |
| Gilford Road over South Br White Creek | 1979 | 165 | Fair |
| Hunt Road over S. O. Drain | 1989 | 160 | Fair |
| Plain Road over Sucker Creek Drain | 1963 | 160 | Fair |
| Rossman Road over Sucker Creek Drain | 1965 | 140 | Fair |
| Shabbona Road over Mud Creek Drain Outlet | 1974 | 140 | Poor |
| Ringle Road over Sellars Drain | 1960 | 138 | Fair |
| Loomis Road over Wiscoggin Drain | 1930 | 135 | Poor |
| Mayville Road over Murdick-vansickland Drn | 1958 | 135 | Fair |
| Loomis Road over Tuttleville Drain | 1980 | 133 | Good |
| Loomis Road over Akron Centerline Drain | 1993 | 132 | Good |
| Crawford Road over White Creek I/c Drain | 1994 | 130 | Good |
| Cass City Road over State & Colling I/c Drn | 1992 | 126 | Good |
| Quanicassee Road over Northwest Drain Outlet 1 | 1980 | 125 | Fair |
| Dodge Road over South Br White Creek | 1971 | 120 | Poor |
| Genesee Road over Frost I/c Drain | 1984 | 120 | Fair |
| Rossman Road over S. O. Drain | 1978 | 120 | Good |
| Waterman Road over Evergreen Creek | 1992 | 120 | Good |
| Legg Road over White Creek Drain #2 | 2015 | 116 | Good |
| Hoppe Road over Wiscoggin Dairn | 1986 | 115 | Good |
| Loomis Road over Allen Drain | 1999 | 115 | Good |
| Garner Road over Northwest Drain Outlet 2 | 1962 | 110 | Fair |
| Rossman Road over White Creek Drain #2 | 1983 | 110 | Fair |
| Cemetery Road over White Creek Drain #2 | 1996 | 105 | Good |
| Deckerville Road over Northwest Drain | 1983 | 105 | Fair |
| Dutcher Road over Northwest Drain | 1963 | 105 | Fair |
| Goodrich Road over Fostoria Drain | 1994 | 105 | Good |
| Murray Road over Sucker Creek Drain | 1965 | 105 | Fair |
| Cass City Road over Northwest Drain Outlet 3 | 1986 | 100 | Good |
| Elmwood Road over State & Colling I/c Drn | 2001 | 100 | Fair |
| Lamton Road over White Creek I/c Drain | 2004 | 100 | Fair |
| Garner Road over Northwest Drain Outlet 1 | 1999 | 98 | Good |
| Belsay Road over Perry Creek | 1974 | 90 | Fair |
| Centerline Road over Murdick-vansickland Drn | 1993 | 90 | Good |
| Clothier Road over White Creek Drain #2 | 1987 | 90 | Fair |
| Murphy Lake Road over Perry Creek | 1974 | 90 | Fair |
| Van Geisen Road over Northwest Drain | 1998 | 90 | Good |
| Bond Road over South Br White Creek | 1968 | 85 | Fair |
| Harmon Lake Road over S. O. Drain | 1997 | 85 | Fair |
| Van Giesen Road over Hobart Or Br 3 NW Drain | 1979 | 85 | Fair |
| Akron Road over Northwest Drain Outlet 1 | 1924 | 80 | Fair |
| Buell Road over Perry Creek | 1967 | 80 | Fair |
| Hickey Road over Northwest Drain | 1972 | 80 | Fair |
| Sergent Road over Dead Creek | 1979 | 80 | Fair |
| Van Buren Road over Vccm&s Drain | 2007 | 80 | Fair |
| Cass City Road over Wiscoggin Drain | 1984 | 78 | Good |
| Keil Road over Bach Drain | 1981 | 78 | Fair |
| Cass City Road over Southgate Drain | 1945 | 77 | Poor |
| Don Road over Gibson Drain | 1965 | 76 | Fair |
| Ashmore Road over State I/c Drain Extn | 1972 | 75 | Fair |
| Carson Road over Northwest Drain Outlet 3 | 1967 | 75 | Fair |
| Cass City Road over Allen Drain #1 | 2010 | 75 | Good |
| Cass City Road over Latimer Or Allen Relief | 2016 | 72 | Good |
| Dutcher Road over Wiscoggin Drain | 1979 | 70 | Good |
| Mc Arthur Road over White Creek I/c Drain | 2001 | 70 | Fair |
| Squires Road over Frost I/c Drain | 1982 | 70 | Fair |
| Turner Road over Sucker Creek Drain | 2003 | 70 | Good |
| Austin Road over Belgian Drain | 1962 | 65 | Fair |
| Cooklin Road over Butternut Creek Drain | 1978 | 60 | Fair |
| Darbee Road over Wiscoggin Drain | 1979 | 60 | Fair |
| Harris Road over Murdick-vansickland Drn | 1991 | 60 | Fair |
| Maier Road over Fremont Drain | 1960 | 60 | Fair |
| Reed Road over North Br Cass River | 2009 | 60 | Good |
| Lanway Road over Murdick-vansickland Drn | 2008 | 55 | Fair |
| Carson Road over Southgate Drain | 1998 | 50 | Good |
| Harmon Lake Road over Sucker Creek Drain | 1983 | 50 | Good |
| Phillips Road over South Br White Creek | 1968 | 50 | Good |
| Remington Road over Columbia Drain | 2015 | 50 | Good |
| Washburn Road over Scott Drain | 1979 | 50 | Good |
| Wells Road over S. O. Drain | 1986 | 50 | Good |
| Parrent Road over Gibson Drain | 1979 | 43 | Fair |
| Mushroom Road over South Br White Creek | 1978 | 40 | Good |
| Kindler Road over Wiscoggin Drain | 2003 | 35 | Fair |
| Ackerman Road over State I/c Drain Extn | 1972 | 30 | Fair |
| Allen Road over Southgate Drain | 1998 | 27 | Good |
| Pike Road over Center Line Drain | 2020 | 24 | Good |
| Arthur Road over South Br White Creek | 1998 | 20 | Fair |
| Allen Road over Allen Drain | 1980 | 15 | Fair |
| Ross Road over S. O. Drain | 1978 | 8 | Fair |
| Drv Off Garner Rd over NW Outlet No. 3 | 1980 | 5 | Fair |