List of highways numbered 503
The following highways are numbered 503:
Canada[]
Alberta Highway 503
Newfoundland and Labrador Route 503
- Ontario Highway 503 (former)
Costa Rica[]
India[]
Japan[]
United States[]
County Road 503 (Brevard County, Florida)
Maryland Route 503 (former)
County Route 503 (New Jersey)
Ohio State Route 503
Washington State Route 503
- Territories
![]() | This list is incomplete; you can help by . (October 2010) |
Preceded by 502 |
Lists of highways 503 |
Succeeded by 504 |
Categories:
- Lists of roads sharing the same title