5 bridges with vertical clearance data on SR-81 in Michigan. Lowest: 164.0ft.
| Clearance | Carries | Crosses | Location | Built | Map |
|---|---|---|---|---|---|
| 164.0ft | M-81,Washington St | I-75 | @ M-81 | 2006 | Map |
| 1000.0ft | M-81 | Blumfield Creek | 3.7 Mi E Of I-75 | 1929 | Map |
| 1000.0ft | M-81 | Cheboyganing Creek | 0.2 Mi W Of M-15 | 1939 | Map |
| 1000.0ft | M-81 | Marsh Drain | 3.7 Mi W Of Sanilac Col | 2007 | Map |
| 1000.0ft | M-81 | N Branch Cass River | 1.1 Mi W Of Sanilac Col | 1977 | Map |