The following highways are numbered 400:
Australia edit
Canada edit
Croatia edit
Ireland edit
Japan edit
Korea, South edit
South Africa edit
R400 road in the Eastern Cape
Spain edit
Turkey edit
D.400, a west–east state road in Turkey running from Datça, Muğla Province to Esendere at the Iranian border.
United Kingdom edit
A400 road in London- B400 road (Chancery Lane)
United States edit
U.S. Route 400
Arkansas Highway 400
Florida State Road 400
Georgia State Route 400
Kentucky Route 400
Louisiana Highway 400
Maryland Route 400, a former state highway
Nevada State Route 400- New York:
North Carolina Highway 400- Pennsylvania Route 400 (official designation for Pennsylvania Route 380)
Puerto Rico Highway 400
South Carolina Highway 400
Tennessee State Route 400- Texas:
- Utah:
- Road 400 (Cottonwood Canyon Road)
Virginia State Route 400
- Virginia State Route 400 (former)
| Preceded by 399 |
Lists of highways 400 |
Succeeded by 401 |
This article includes a list of roads, streets, highways, or other routes that are associated with the same title.
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