Orbit Missouri Interstate speed limits
The posted limits on every Interstate in Missouri, 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 Missouri is 70 mph.
| Interstate | Usually | Range |
|---|---|---|
| I-29 | 70 mph | 55 to 70 mph |
| I-35 | 70 mph | 55 to 70 mph |
| I-44 | 70 mph | 55 to 70 mph |
| I-49 | 70 mph | 65 to 70 mph |
| I-55 | 70 mph | 60 to 70 mph |
| I-57 | 70 mph | 70 mph |
| I-64 | 60 mph | 55 to 65 mph |
| I-70 | 70 mph | 55 to 70 mph |
| I-72 | 55 mph | 55 to 70 mph |
| I-155 | 70 mph | 70 mph |
| I-170 | 60 mph | 60 mph |
| I-229 | 70 mph | 55 to 70 mph |
| I-255 | 60 mph | 60 mph |
| I-270 | 60 mph | 55 to 60 mph |
| I-435 | 70 mph | 65 to 70 mph |
| I-470 | 55 mph | 55 to 65 mph |
| I-635 | 65 mph | 55 to 65 mph |
| I-670 | 45 mph | 45 to 55 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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