6 bridges with vertical clearance data on US-340 in Maryland. Lowest: 149.9ft.
| Clearance | Carries | Crosses | Location | Built | Map |
|---|---|---|---|---|---|
| 149.9ft | Us 340 Ebr | S Mountain Road | 0.27 Mile East Of Md 180 | 1964 | Map |
| 160.1ft | Us 340 Ebr | Md 180 Wbr | 0.07 Mile East Of Md 180 | 1964 | Map |
| 160.1ft | Us 340 Wbr | S Mountain Road | 0.27 Mile East Of Md 180 | 1964 | Map |
| 160.1ft | Us 340 Ebr | Us 15 Sbr | 4.33 Miles East Of Md 180 | 1966 | Map |
| 220.1ft | Us 340 | Potomac River, Csx Trans | On Virginia State Line | 1946 | Map |
| 450.1ft | Us 340 | Israel Crk, Appala. Trl. | 0.18 Mile East Of Md 67 | 1963 | Map |