| M-18 over Tobacco River | Poor | 284.8 ft | 6,100 | 1939 |
| Dale Road over Tobacco River | Poor | 199.8 ft | 585 | 1970 |
| Highwood Road over Tittabawasee River | Poor | 140.7 ft | 495 | 1984 |
| Bard RD over S Br Of Tobacco Riv | Poor | 77.8 ft | 220 | 1970 |
| M-18|m-61|w Cedar over Cedar Creek | Fair | 110.2 ft | 13,231 | 2001 |
| M-18 over Farm Drain | Fair | 24.0 ft | 5,052 | 1937 |
| M-61 over Tittabawassee River | Fair | 275.9 ft | 3,302 | 1958 |
| M-61 over Molasses River | Fair | 88.6 ft | 3,302 | 1998 |
| M-30 over Little Tobacco River | Fair | 179.8 ft | 2,536 | 1958 |
| M-30 over Sugar River | Fair | 154.9 ft | 2,536 | 1954 |
| M-30 over W Br Tittabawassee River | Fair | 40.0 ft | 2,536 | 1954 |
| M-30 over Tittabawassee River | Fair | 62.0 ft | 2,536 | 1928 |
| M-30 over Br Tittabawassee River | Fair | 25.9 ft | 2,536 | 1954 |
| Estey RD over Tittabawasee River | Fair | 204.1 ft | 1,793 | 1970 |
| M-18 over N Br Cedar River | Fair | 49.9 ft | 1,596 | 1923 |
| Porter Street over Tobacco River | Fair | 198.5 ft | 1,470 | 1917 |
| Glidden RD over Tobacco River | Fair | 147.0 ft | 880 | 1987 |
| Calhoun RD over N Br Of Tobacco R | Fair | 63.0 ft | 440 | 1968 |
| Bard RD over N Br Of Cedar River | Fair | 24.9 ft | 430 | 2000 |
| Bard RD over N Br Of Cedar River | Fair | 24.0 ft | 430 | 1985 |
| Knox RD over Little Cedar River | Fair | 22.0 ft | 380 | 1964 |
| Bensch RD over Tittabawassee River | Fair | 26.9 ft | 375 | 1976 |
| Beaverton RD over S Br Of Tobacco Riv | Fair | 79.7 ft | 330 | 1986 |
| Pinconning RD over Watson Drain | Fair | 22.0 ft | 291 | 1985 |
| Herner RD over E Br Tittabawassee R | Fair | 34.8 ft | 275 | 1980 |
| Klender RD over Watson Drain | Fair | 25.9 ft | 260 | 2002 |
| Rhodes RD over Watson Drain | Fair | 25.9 ft | 247 | 1986 |
| Bard RD over N Br Tobacco River | Fair | 35.8 ft | 231 | 1975 |
| Grout RD over N Br Tobacco River | Fair | 35.8 ft | 215 | 1977 |
| Mccullough RD over Middle Br Tobacco River | Fair | 29.9 ft | 210 | 1964 |
| Calhoun Road over Middle Br Tobacco River | Fair | 44.9 ft | 205 | 1980 |
| Howard RD over Cedar River | Fair | 71.9 ft | 205 | 1975 |
| Dutcher RD over Sugar River | Fair | 26.9 ft | 170 | 1979 |
| Polegate RD over Molasses River | Fair | 40.0 ft | 155 | 1918 |
| Shaeffer RD over Little Cedar River | Fair | 29.9 ft | 126 | 2013 |
| Shell RD over Little Sugar River | Fair | 24.9 ft | 125 | 1976 |
| Peterson RD over Bear Drain | Fair | 29.9 ft | 115 | 2014 |
| Townhall RD over S Br Of Tobacco | Fair | 89.9 ft | 100 | 2013 |
| Badger RD over Little Cedar River | Fair | 24.3 ft | 82 | 2000 |
| M-18 over S Br Little Sugar River | Good | 26.9 ft | 5,963 | 1923 |
| M-30 over Tobacco River | Good | 232.6 ft | 4,100 | 2021 |
| M-30 over Larabee Creek | Good | 32.8 ft | 3,517 | 1977 |
| Bard Road over Middle Br Tobacco River | Good | 24.0 ft | 1,375 | 1991 |
| Hockaday RD over Sugar River | Good | 20.0 ft | 1,083 | 1997 |
| Ritchie RD over Sugar River | Good | 69.9 ft | 900 | 1993 |
| Chappel Dam RD over Cedar River | Good | 79.7 ft | 610 | 1985 |
| Dale Road over Little Cedar River | Good | 44.0 ft | 551 | 1988 |
| Bensch RD over Mid Br Tittabawasse Riv | Good | 33.8 ft | 450 | 2022 |
| Secord Dam Road over Tittabawassee River | Good | 270.0 ft | 340 | 1989 |
| Nickless RD over S Br Little Sugar River | Good | 25.9 ft | 300 | 2003 |
| Shearer RD over Howland Creek | Good | 24.0 ft | 286 | 1985 |
| Mcculloch RD over N Br Tobacco River | Good | 60.0 ft | 260 | 1991 |
| Swinson Neuman RD over Watson Drain | Good | 24.0 ft | 252 | 1994 |
| Youngs RD over Little Tobacco River | Good | 26.2 ft | 250 | 2002 |
| Maple Point RD over Molasses River | Good | 32.5 ft | 250 | 2022 |
| Eagleson RD over Cedar River | Good | 69.9 ft | 225 | 1978 |
| Howard RD over N Br Tobacco River | Good | 60.0 ft | 210 | 1988 |
| Schmidt RD over N Br Cedar River | Good | 23.0 ft | 205 | 1992 |
| Mcnamara RD over N Br Of Tobacco River | Good | 60.0 ft | 200 | 2016 |
| Lang RD over Middle Br Tobacco River | Good | 42.0 ft | 187 | 2007 |
| Dassey RD over S Br Little Sugar River | Good | 24.0 ft | 184 | 1994 |
| Grass Lake RD over Tittabawassee River | Good | 22.0 ft | 92 | 2004 |
| Nettleton RD over Little Tobacco River | Good | 24.0 ft | 80 | 1994 |