12 bridges with vertical clearance data on I-81 in Maryland. Lowest: 140.1ft.
| Clearance | Carries | Crosses | Location | Built | Map |
|---|---|---|---|---|---|
| 140.1ft | Is 81 Nb | Maugans Ave | 1.89 Miles North Of Md 58 | 1958 | Map |
| 140.1ft | Is 81 Sb | Maugans Ave | 1.89 Miles North Of Md 58 | 1958 | Map |
| 140.1ft | Is 81 Nb | Showalter Road | 1.66 Miles S Of Pa Line | 1958 | Map |
| 140.1ft | Is 81 Sb | Showalter Road | 1.66 Miles S Of Pa Line | 1958 | Map |
| 149.9ft | Is 81 Nb | Maugansville Road | 0.38 Mile North Of Md 58 | 1958 | Map |
| 149.9ft | Is 81 Sb | Maugansville Road | 0.38 Mile North Of Md 58 | 1958 | Map |
| 160.1ft | Is 81 Nb | Md 63/68 | 0.88 Mi N Of West Va Line | 1965 | Map |
| 160.1ft | Is 81 Sb | Md 63/68 | 0.88 Mi N Of West Va Line | 1965 | Map |
| 220.1ft | Is 81 Sb | Norfolk Southern Rr | 0.57 Mile North Of Md 58 | 1958 | Map |
| 230.0ft | Is 81 Nb | Norfolk Southern Rr | 0.57 Mile North Of Md 58 | 1958 | Map |
| 230.0ft | Is 81 Nb | Csx Trans. | 1.28 Miles North Of Is 70 | 1964 | Map |
| 230.0ft | Is 81 Sb | Csx Trans. | 1.28 Miles North Of Is 70 | 1964 | Map |