Orbit Louisiana Interstate speed limits
The posted limits on every Interstate in Louisiana, measured along each road: the limit you'll see most, and the range from the slowest stretch to the fastest. The highest Interstate limit in Louisiana is 75 mph.
| Interstate | Usually | Range |
|---|---|---|
| I-10 | 70 mph | 60 to 70 mph |
| I-12 | 70 mph | 65 to 70 mph |
| I-20 | 70 mph | 60 to 70 mph |
| I-49 | 75 mph | 60 to 75 mph |
| I-55 | 70 mph | 60 to 70 mph |
| I-59 | 70 mph | 70 mph |
| I-110 | 50 mph | 50 to 60 mph |
| I-210 | 70 mph | 25 to 70 mph |
| I-220 | 70 mph | 60 to 70 mph |
| I-310 | 70 mph | 60 to 70 mph |
| I-510 | 60 mph | 60 to 70 mph |
| I-610 | 70 mph | 60 to 70 mph |
Posted limits as of October 2026, from state and federal road data and © OpenStreetMap contributors, measured by length of road. Work zones, weather and signs can set a lower limit; always follow the posted sign.
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