| Route | From | To | Dates | Now |
| 181 | Murdock | Charlotte Co line N of New Port Comfort | 1931 | |
| 182 | Miami | Miami Beach | 1931 | SR A1A |
| From "County Causeway" (current MacArthur Causeway) to SR 140 is to be known as the John H. Levi Highway | ||||
| 183 | Slater | Bokeelia | 1931 | |
| 183 (spur) | Matalacha Pass | Punta Gorda | 1935 | |
| 183 (spur) | SR 183 on Pine Island | St. James City | 1935 | |
| 184 | Fort Myers | Immokalee | 1931 | |
| 185 | SR 60 near Leonia | Sweet Gum Head | 1931 | |
| 186 | Alabama state line W of Esto | SR 39 N of Bonifay | 1931-1945 | CR 177 |
| 187 | Milton | Garcon Point | 1931 | |
| 188 | Milton | Jay | 1931 | |
| 189 | Hastings | Bunnell | 1931 | |
| 190 | Milton | Alabama state line at Alaflora | 1931 | |
| 191 | SR 4 near Malabar | SR 24 | 1931 | |
| 192 | SR 80 near Keystone Heights | Waldo | 1931 | |
| 193 | SR 4 near Jupiter | Jct SR 85 and SR 109 | 1931 | |
| 194 | SR 25 along West Palm Beach canal | SR 29 | 1931 | |
| 195 | Ocean Ridge | SR 199 | 1931 | |
| 196 | Old Dixie Highway | SR 4 neasr Kelsey City | 1931 | |
| 197 | Riviera | 1931 | ||
| 198 | SR 25 NW of Shawano Plantation (current Brown's Farm) | Delray Beach | 1931 | CR 827 SR 806 |
| Section from Shawano Plantation (Brown's Farm) to Jct at SR 199 (US 441) along Hillsborough Canal never built | ||||
| 199 | Stuart | SR 149 | 1931 | |
| 200 | SR 4 south of Olympia | SR 149 | 1931 | |