| U.S. Route 340 | |
|---|---|
| Route information | |
| Auxiliary route of US 40 | |
| Length: | 156 mi (251 km) |
| Existed: | 1926 – present |
| Major junctions | |
| South end: |
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| East end: |
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| Location | |
| States: | Virginia, West Virginia, Maryland |
| Highway system | |
I-64 at Waynesboro, VA
US 250 at Waynesboro, VA
US 33 at Elkton, VA
US 211 at Luray, VA
US 522 at Front Royal, VA
I-66 near Front Royal, VA
US 522 at Double Tollgate, VA![]()
US 17 / US 50 near Boyce, VA
US 15 near Jefferson, MD