| M-46 over Black River | Poor | 74.8 ft | 5,462 | 1947 |
| M-53 over Greenman Creek | Poor | 24.0 ft | 3,600 | 1927 |
| Marlette Road over S Br Cass River I/c Drn | Poor | 50.9 ft | 2,754 | 1930 |
| Galbraith Line RD over Black River | Poor | 245.1 ft | 1,761 | 1985 |
| M-19 over S Fork Cass River | Poor | 40.0 ft | 1,600 | 1957 |
| Snover Road over S Br Cass River I/c Drn | Poor | 83.0 ft | 967 | 1983 |
| Bay City-forestvil over Tyre I/c Drain Extn | Poor | 36.1 ft | 948 | 1985 |
| Black River Road over Black Creek | Poor | 51.8 ft | 919 | 1962 |
| Sanborn Street over Black River | Poor | 182.4 ft | 850 | 1974 |
| Snover Road over Middle Br Drain | Poor | 23.3 ft | 742 | 1930 |
| Range Line Road over Fye Drain | Poor | 27.2 ft | 225 | 1982 |
| Stilson Road over Mcdonald Drain | Poor | 33.1 ft | 201 | 1950 |
| Freiberger Road over Middle Br Drain | Poor | 27.9 ft | 200 | 1970 |
| Richmondville Road over Black River I/c Drain | Poor | 51.8 ft | 200 | 1981 |
| Custer Road over Fye Drain | Poor | 22.0 ft | 180 | 1990 |
| Stilson Road over Setter Drain | Poor | 48.2 ft | 170 | 1979 |
| Freiberger Road over S Fork Of N Br Cass Riv | Poor | 22.6 ft | 160 | 1985 |
| Bad Axe Road over S Fork Of N Br Cass Riv | Poor | 42.7 ft | 150 | 1990 |
| Bad Axe Road over Tyre I/c Drain Extn | Poor | 37.1 ft | 150 | 1988 |
| Mowerson Road over Elk Creek Drain | Poor | 30.8 ft | 150 | 1980 |
| Brooks Road over Elk Creek Drain | Poor | 30.8 ft | 150 | 1994 |
| Mushroom Road over Middle Br Drain | Poor | 25.3 ft | 150 | 1984 |
| Sullivan Road over S Br Cass River I/c Drn | Poor | 40.4 ft | 125 | 1972 |
| Mowerson Road over Mcdonald Drain | Poor | 37.1 ft | 90 | 1988 |
| Huron Line Road over Tyre I/c Drain Ext | Poor | 21.0 ft | 40 | 1974 |
| M-19 over Elk Creek | Fair | 85.3 ft | 4,553 | 2000 |
| M-53 over N Br Cass River | Fair | 74.8 ft | 4,062 | 1985 |
| M-53 over S Br Cass River | Fair | 134.8 ft | 3,600 | 1977 |
| M-25 over Forester Creek | Fair | 35.1 ft | 3,500 | 1934 |
| M-46 over N Branch White Creek | Fair | 26.9 ft | 3,484 | 1932 |
| Ruth Road over Black River I/c Drain | Fair | 134.8 ft | 3,325 | 1952 |
| M-25 over Cherry Creek | Fair | 33.8 ft | 3,294 | 1934 |
| M-25 over Carmody Creek | Fair | 24.9 ft | 2,969 | 1942 |
| M-25 over Sherman Creek | Fair | 30.8 ft | 2,969 | 1939 |
| Applegate Road over Black River | Fair | 165.7 ft | 2,025 | 1979 |
| Deckerville Road over Middle Br Drain | Fair | 62.0 ft | 1,825 | 1992 |
| M-19 over Middle Br Cass River | Fair | 34.8 ft | 1,718 | 1952 |
| M-19 over Br Cass River | Fair | 34.8 ft | 1,718 | 1952 |
| Shephard Road over Elk Creek Drain | Fair | 38.1 ft | 1,600 | 1960 |
| Galbraith Line RD over Black Creek | Fair | 49.9 ft | 1,590 | 2007 |
| Harrington Road over Black River | Fair | 130.2 ft | 1,500 | 1929 |
| M-25 over Big Creek | Fair | 44.9 ft | 1,173 | 1934 |
| M-25 over (no Name)creek | Fair | 23.0 ft | 1,173 | 1948 |
| M-25 over Indian Creek | Fair | 134.8 ft | 1,173 | 1949 |
| Todd Road over Black Creek Drain | Fair | 60.0 ft | 1,170 | 2007 |
| Deckerville Road over S Br Cass River I/c Drn | Fair | 73.2 ft | 1,023 | 1930 |
| Germania Road over Duff Drain | Fair | 24.0 ft | 966 | 2001 |
| Snover Road over White Creek I/c Drain | Fair | 21.0 ft | 875 | 1983 |
| Shephard Road over Setter I/c Drain | Fair | 25.6 ft | 835 | 1970 |
| M-25 over Mill Creek | Fair | 22.0 ft | 788 | 1934 |
| Germania Road over N Br Cass River | Fair | 33.1 ft | 658 | 1974 |
| French Line Road over Smalldon Drain | Fair | 24.0 ft | 610 | 1930 |
| French Line Road over Beals & Frizzle Drain | Fair | 22.6 ft | 610 | 1930 |
| Melvin Road over Elk Creek Drain | Fair | 32.5 ft | 565 | 1930 |
| Bricker Road over Jackson Creek I/c Drain | Fair | 20.3 ft | 540 | 1976 |
| Germania Road over S Fork Of N Br Cass Riv | Fair | 35.4 ft | 522 | 1976 |
| Germania Road over Middle Br Cass River | Fair | 69.6 ft | 514 | 1987 |
| French Line Road over Black River I/c Drain | Fair | 129.9 ft | 510 | 1992 |
| Argyle Road over Evergreen-austin Drain | Fair | 20.7 ft | 454 | 1976 |
| Germania Road over S Br Cass River I/c Drn | Fair | 94.2 ft | 437 | 1983 |
| French Line Road over Duff Drain | Fair | 22.6 ft | 435 | 2001 |
| French Line Road over Duff Drain | Fair | 25.3 ft | 435 | 2001 |
| Stilson Road over Potts Drain | Fair | 21.0 ft | 320 | 1991 |
| Church Road over Black River I/c Drain | Fair | 134.8 ft | 310 | 2004 |
| Wheeler Road over S Fork Of N Br Cass Riv | Fair | 33.1 ft | 300 | 1950 |
| Harrington Road over Speaker-maple Valley Drn | Fair | 27.9 ft | 300 | 1960 |
| Cash Road over Elk Creek Drain | Fair | 103.3 ft | 300 | 2004 |
| Downington Road over Black River I/c Drain | Fair | 75.1 ft | 300 | 1986 |
| Burns Line Road over Mill Creek | Fair | 25.9 ft | 300 | 1950 |
| Shabbona Road over S Br Cass River I/c Drn | Fair | 80.1 ft | 290 | 1950 |
| Montgomery Road over S Br Cass River I/c Drn | Fair | 58.1 ft | 265 | 1977 |
| Washington Road over Black River I/c Drain | Fair | 121.1 ft | 256 | 1987 |
| ST Clair Road over Birch Creek | Fair | 30.5 ft | 250 | 1970 |
| Hoadley Road over N Br Cass River | Fair | 54.1 ft | 240 | 1991 |
| Stilson Road over Mcdonald Drain | Fair | 44.0 ft | 230 | 1981 |
| Custer Road over Black River I/c Drain | Fair | 100.1 ft | 225 | 1996 |
| Range Line Road over Berry Drain | Fair | 28.2 ft | 225 | 1982 |
| Harrington Road over Potts Drain | Fair | 24.0 ft | 225 | 1991 |
| Aitken Road over Potts Drain | Fair | 35.4 ft | 225 | 1930 |
| Custer Road over Berry Drain | Fair | 33.1 ft | 225 | 1981 |
| Walker Road over S Br Cass River I/c Drn | Fair | 93.2 ft | 225 | 1981 |
| Arnold Road over S Br Cass River I/c Drn | Fair | 94.2 ft | 225 | 1988 |
| School Road over Speaker-maple Valley Drn | Fair | 20.0 ft | 225 | 1970 |
| Washington Road over Elk Creek Drain | Fair | 100.1 ft | 225 | 1983 |
| Morris Road over Beals & Frizzle Drain | Fair | 22.0 ft | 225 | 1910 |
| Cribbins Road over Black Creek Drain | Fair | 69.9 ft | 210 | 1987 |
| Berkshire Road over Berry Drain | Fair | 26.2 ft | 200 | 1945 |
| Paldi Road over Speaker-maple Valley Drn | Fair | 33.5 ft | 200 | 1969 |
| Mushroom Road over White Creek I/c Drain | Fair | 27.9 ft | 200 | 1970 |
| Berkshire Road over Fye Drain | Fair | 29.9 ft | 195 | 1977 |
| Wheeler Road over Middle Br Cass River Drn | Fair | 40.4 ft | 190 | 1981 |
| Downington Road over Middle Br Drain | Fair | 26.9 ft | 180 | 1969 |
| Snover Road over Black River I/c Drain | Fair | 128.0 ft | 180 | 1980 |
| Custer Road over Fye Drain | Fair | 26.6 ft | 180 | 1983 |
| Banner Road over Dwight Drain | Fair | 30.2 ft | 180 | 1983 |
| Comstock Road over Jackson Creek I/c Drain | Fair | 26.2 ft | 170 | 1983 |
| Wellman Line Road over Jackson Creek I/c Drain | Fair | 26.2 ft | 170 | 1984 |
| Brown Road over Jackson Creek I/c Drain | Fair | 23.3 ft | 170 | 1980 |
| Kilgore Road over Black Creek Drain | Fair | 34.1 ft | 170 | 1920 |
| Fargo Road over Black Creek | Fair | 42.7 ft | 170 | 2000 |
| Paldi Road over Elk Creek Drain | Fair | 43.0 ft | 165 | 1950 |
| Walker Road over Elk Creek Drain | Fair | 97.1 ft | 165 | 1983 |
| Downington Road over S Br Cass River I/c Drn | Fair | 108.9 ft | 160 | 1999 |
| Leslie Road over Middle Br Cass River | Fair | 42.0 ft | 160 | 1905 |
| Downington Road over Cherry Creek | Fair | 36.1 ft | 160 | 1995 |
| Applegate Road over Beals & Frizzle Drain | Fair | 30.5 ft | 155 | 2001 |
| Arnold Road over Middle Br Cass River | Fair | 40.0 ft | 150 | 1907 |
| Patterson Road over S Fork Of N Br Cass Riv | Fair | 39.0 ft | 150 | 1985 |
| Eddy Road over Dwight Drain | Fair | 27.9 ft | 150 | 1983 |
| Stringer Road over Dwight Drain | Fair | 30.2 ft | 150 | 1984 |
| Richards Road over White Creek I/c Drain | Fair | 22.0 ft | 150 | 1973 |
| Moore Road over S Br Cass River I/c Drn | Fair | 63.0 ft | 150 | 1930 |
| Shelden Road over Brice Drain | Fair | 23.0 ft | 150 | 1930 |
| Decker Road over S Br Cass River I/c Drn | Fair | 144.0 ft | 135 | 1969 |
| Adams Road over White Creek I/c Drain | Fair | 20.3 ft | 135 | 1980 |
| Wood Road over Duff Drain | Fair | 22.6 ft | 130 | 2001 |
| Setter Road over Setter I/c Drain | Fair | 45.6 ft | 120 | 1980 |
| Day Road over Forester Creek | Fair | 22.0 ft | 120 | 1982 |
| Leslie Road over S Br Cass River I/c Drn | Fair | 89.9 ft | 115 | 1991 |
| Millan Road over Setter I/c Drain | Fair | 32.5 ft | 110 | 1999 |
| M-90 over Mills Creek | Good | 24.0 ft | 8,400 | 2023 |
| M-90 over Black River | Good | 209.0 ft | 8,400 | 2023 |
| M-25 over Mill Creek | Good | 44.9 ft | 7,775 | 2016 |
| M-90 over Spring Creek | Good | 24.0 ft | 5,001 | 2000 |
| M-90 over W Br Mills Creek | Good | 29.9 ft | 5,001 | 2006 |
| M-90 over E Br Mills Creek | Good | 23.0 ft | 5,001 | 2000 |
| Deckerville Road over Black River I/c Drain | Good | 68.9 ft | 4,630 | 1985 |
| M-19 over Br Of Elk Creek | Good | 26.9 ft | 4,553 | 2000 |
| M-19 over Hale Creek | Good | 21.7 ft | 4,553 | 2002 |
| M-53 over White Creek | Good | 47.9 ft | 4,415 | 2006 |
| M-46 over S Br Cass River | Good | 135.2 ft | 3,484 | 2007 |
| M-90 over Potts Drain | Good | 29.9 ft | 2,600 | 1961 |
| Wildcat Road over Br Of Birch Creek | Good | 21.0 ft | 2,060 | 2000 |
| Galbraith Line RD over Birch Creek | Good | 22.0 ft | 2,020 | 2003 |
| M-19 over Br Cass River | Good | 29.9 ft | 1,718 | 2007 |
| Peck Road over Elk Creek Drain | Good | 33.8 ft | 1,538 | 2023 |
| French Line Road over Elk Creek Drain | Good | 104.0 ft | 958 | 1988 |
| Marlette Road over Potts Drain | Good | 24.9 ft | 840 | 1996 |
| Marlette Road over Elk Creek Drain | Good | 75.1 ft | 725 | 1983 |
| Melvin RD over Mc Donald Drain | Good | 49.9 ft | 532 | 2018 |
| Germania Road over Evergreen-austin Drain | Good | 32.2 ft | 514 | 1986 |
| Forester Road over Black River I/c Drain | Good | 115.2 ft | 380 | 1979 |
| French Line Road over Duff Drain | Good | 22.6 ft | 375 | 2001 |
| Stilson Road over Elk Creek Drain | Good | 92.8 ft | 371 | 1978 |
| French Line Road over S Br Cass River I/c Drn | Good | 80.1 ft | 314 | 1986 |
| French Line Road over Carter Drain | Good | 20.3 ft | 314 | 1994 |
| Aitken Road over Black River I/c Drain | Good | 157.2 ft | 305 | 2005 |
| Fetting Road over Elk Creek Drain | Good | 75.1 ft | 302 | 1983 |
| Harrington Road over Elk Creek Drain | Good | 51.8 ft | 300 | 1991 |
| Babcock Road over Birch Creek | Good | 56.1 ft | 259 | 2015 |
| Mills Road over Black River & Smercz Drn | Good | 49.9 ft | 246 | 2017 |
| Cooper Road over S Br Cass River I/c Drn | Good | 113.8 ft | 240 | 2005 |
| Burns Line Road over Mill Creek | Good | 44.0 ft | 230 | 2005 |
| Miller Road over S Br Cass River I/c Drn | Good | 84.6 ft | 225 | 1986 |
| Shabbona Road over Black River I/c Drain | Good | 69.9 ft | 225 | 1986 |
| Stone Road over Black River I/c Drain | Good | 48.9 ft | 225 | 1991 |
| Applegate Road over Elk Creek Drain | Good | 94.2 ft | 222 | 1983 |
| Banner Road over Elk Creek Drain | Good | 75.1 ft | 222 | 1983 |
| Fisher Road over Jackson Creek I/c Drain | Good | 26.2 ft | 200 | 2016 |
| Fisher RD over Sanilac & ST Clair Drain | Good | 24.0 ft | 200 | 2016 |
| Lamton Road over Greenman I/c Drain | Good | 43.0 ft | 185 | 2004 |
| Shabbona Road over Middle Br Drain | Good | 54.1 ft | 180 | 1993 |
| Nicol Road over Black River I/c Drain | Good | 79.1 ft | 170 | 2005 |
| Carroll Road over Elk Creek Drain | Good | 54.1 ft | 165 | 1991 |
| Aitken Road over Elk Creek Drain | Good | 75.1 ft | 165 | 1985 |
| Hoadley Road over White Creek I /c Drain | Good | 21.0 ft | 165 | 1978 |
| Hoadley Road over White Creek I/c Drain | Good | 21.0 ft | 165 | 1986 |
| Mushroom Road over S Br Cass River I/c Drn | Good | 117.1 ft | 155 | 2001 |
| Moriartey Road over White Creek I/c Drain | Good | 21.0 ft | 150 | 1980 |
| Hall Road over Potts Drain | Good | 20.7 ft | 135 | 1980 |