List Of Highways Numbered 504 on:
[Wikipedia]
[Google]
[Amazon]
The following highways are numbered 504:
National Route 504
Mississippi Highway 504
* 
Costa Rica
* National Route 504
United States
;Mississippi: * Mississippi Highway 504
* Pennsylvania Route 504
Pennsylvania Route 504 (PA 504) is a state highway located in Centre County in the U.S. state of Pennsylvania. The western terminus is at PA 53/ PA 350 in Philipsburg. The eastern terminus is at US 220 Alternate/PA 144 in Wingate.
It rough ...
;Territories:
* Puerto Rico Highway 504
Puerto Rico Highway 504 (PR-504) is a tertiary state''¿Un ...
{{Road index, 504