List of highways numbered 510

The following highways are numbered 510:

Canada Alberta Highway 510 New Brunswick Route 510 Newfoundland and Labrador Route 510 Ontario Highway 510

Costa Rica National Route 510

Ireland R510 regional road

United States Interstate 510 Interstate 510 (Arizona) (cancelled proposal) Florida State Road 510 Maryland Route 510 County Route 510 (New Jersey) Ohio State Route 510 Washington State Route 510 Territories Puerto Rico Highway 510