To the main page Back Forward | Route | From | To | Dates | Now |
| 541 | Chipola Park | Broadbranch | 1939- | |
| 542 | SR 6 S of Blountstown | SR 20 S of Youngstown | 1939- | |
| 543 | E of Barfield | Betts | 1939- | 274 |
| 544 | SR 1 W of Pensacola | Felton Field | 1939- | 296 |
| 545 | Tampa | Southeastern Army Air Base (MacDill AFB - RVD) |
1939- | SR 685, US 92 |
| Last route of the 1939 numbering | ||||
| 546 | Not used | -- | -- | -- |
| 547 | Not used | -- | -- | -- |
| 548 | Not used | -- | -- | -- |
| 549 | Not used | -- | -- | -- |
| 550 | 194x- | 215 | ||
| 551 | 194x- | 230 | ||
| 552 | 194x- | |||
| 553 | 194x- | |||
| 554 | 194x- | |||
| 555 | 194x- | 261 | ||
| 556 | 194x- | |||
| 557 | 194x- | |||
| 558 | 194x- | |||
| 559 | 194x- | |||
| 560 | 194x- | 101 | ||
White numbers on a black background are based on official 1940's County maps, not route logs, and might not be entirely accurate.