The following highways are numbered 456:
Japan
United States
Louisiana Highway 456
Maryland Route 456
New Mexico State Road 456
New York State Route 456
Pennsylvania Route 456
Puerto Rico Highway 456
Farm to Market Road 456
| Preceded by 455 |
Lists of highways 456 |
Succeeded by 457 |
| 0–9 | |
|---|---|
| 10–16 | |
| 17–22 | |
| 23–31 | |
| 32–44 | |
| 45–63 | |
| 64–85 | |
| 86–103 | |
| 104–125 | |
| 126–149 | |
| 150–174 | |
| 175–199 | |
| 200–224 | |
| 225–249 | |
| 250–274 | |
| 275–299 | |
| 300–324 | |
| 325–349 | |
| 350–374 | |
| 375–399 | |
| 400–424 | |
| 425–449 | |
| 450–474 | |
| 475–499 | |
| 500–524 | |
| 525–549 | |
| 550–574 | |
| 575–599 | |
| 600–624 | |
| 625–649 | |
| 650–674 | |
| 675–699 | |
| 700–724 | |
| 725–749 | |
| 750–774 | |
| 775–799 | |
| 800–824 | |
| 825–849 | |
| 850–874 | |
| 875–899 | |
| 900–924 | |
| 925–949 | |
| 950–974 | |
| 975–999 | |
| 1000+ | |
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