| Key | Value |
| name:pl | Droga wojewódzka nr 257 |
| network | pl:regional |
| note | due to nontrivial geometry this route will not validate properly |
| osmonitor:noreport | yes |
| osmonitor:road_components | 2 |
| ref | 257 |
| route | road |
| type | route |
| wikidata | Q9211216 |
| wikipedia | pl:Droga wojewódzka nr 257 |