| M-65 over Thunder Bay River | Poor | 201.4 ft | 1,861 | 1953 |
| 5long Rapids Road over N Br Thunder Bay River | Poor | 139.8 ft | 1,150 | 1978 |
| Us-23 over Thunder Bay River | Fair | 183.4 ft | 16,200 | 1932 |
| Second Avenue over Thunder Bay River | Fair | 264.4 ft | 15,700 | 1939 |
| Us-23 over S Br Devil River | Fair | 31.8 ft | 5,537 | 1936 |
| Us-23 over N Br Devil River | Fair | 30.8 ft | 5,537 | 1933 |
| M-32 over Bean Creek | Fair | 36.1 ft | 5,505 | 1934 |
| M-32 over S Br Thunder Bay River | Fair | 180.1 ft | 5,505 | 1931 |
| Ninth Avenue over Thunder Bay River | Fair | 244.8 ft | 5,123 | 1971 |
| Us-23 over Long Lake Creek | Fair | 29.9 ft | 4,816 | 1939 |
| Werth Road over Lwr S Br Thunder Bay Riv | Fair | 119.8 ft | 1,850 | 1939 |
| Hubbard Lake Road over Wolf Creek | Fair | 47.9 ft | 1,700 | 1940 |
| Hubbard Lake Road over Lwr S Br Thunder Bay Riv | Fair | 82.0 ft | 1,650 | 1948 |
| Nicholson Hill RD over Lwr S Br Thunder Bay Riv | Fair | 37.7 ft | 1,000 | 1964 |
| Wolf Creek Road over Wolf Creek | Fair | 44.9 ft | 500 | 1957 |
| Weiss Road over Devils Lake | Fair | 50.9 ft | 400 | 1982 |
| Bean Creek Road over Bean Creek | Fair | 52.8 ft | 360 | 1993 |
| Herron Road over Thunder Bay River | Fair | 139.8 ft | 300 | 1972 |
| State Street over Devils River | Fair | 33.8 ft | 250 | 1957 |
| Salina Road over Thunder Bay River | Fair | 107.9 ft | 200 | 1984 |
| Metzke Road over N Br Thunder Bay River | Fair | 49.9 ft | 150 | 1984 |
| Bagley Street over Thunder Bay River | Good | 325.1 ft | 15,000 | 2021 |
| Werth Road over Mud Creek | Good | 48.9 ft | 5,325 | 2019 |
| M-32 over S Br Thunder Bay River | Good | 49.9 ft | 4,144 | 1932 |
| Nicholson Hill RD over S Br Devils River | Good | 61.0 ft | 2,355 | 2005 |
| M-65 over N Br Thunder Bay River | Good | 118.8 ft | 1,300 | 2013 |
| Ossineke Road over Devils River | Good | 62.0 ft | 800 | 2020 |
| Beaver Lake Road over Wolf Creek | Good | 44.9 ft | 300 | 1960 |
| Scott Road over Lwr S Br Thunder Bay Riv | Good | 90.9 ft | 300 | 2000 |
| Beaver Lake Road over Lwr S Br Thunder Bay Riv | Good | 131.9 ft | 250 | 2001 |
| Long Rapids Road over Truax Creek | Good | 23.0 ft | 200 | 1998 |
| Wikaryasz Road over N Br Thunder Bay River | Good | 65.0 ft | 60 | 2002 |