Orbit Iowa Interstate speed limits
The posted limits on every Interstate in Iowa, 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 Iowa is 70 mph.
| Interstate | Usually | Range |
|---|---|---|
| I-29 | 70 mph | 55 to 70 mph |
| I-35 | 70 mph | 65 to 70 mph |
| I-74 | 55 mph | 55 to 65 mph |
| I-80 | 70 mph | 65 to 70 mph |
| I-129 | 55 mph | 55 mph |
| I-235 | 60 mph | 55 to 65 mph |
| I-280 | 65 mph | 65 mph |
| I-380 | 70 mph | 55 to 70 mph |
| I-480 | 55 mph | 50 to 55 mph |
| I-680 | 65 mph | 65 mph |
| I-880 | 70 mph | 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.
Other states
AlabamaArizonaArkansasCaliforniaColoradoConnecticutDelawareDistrict of ColumbiaFloridaGeorgiaIdahoIllinoisIndianaKansasKentuckyLouisianaMaineMarylandMassachusettsMichiganMinnesotaMississippiMissouriMontanaNebraskaNevadaNew HampshireNew JerseyNew MexicoNew YorkNorth CarolinaNorth DakotaOhioOklahomaOregonPennsylvaniaRhode IslandSouth CarolinaSouth DakotaTennesseeTexasUtahVermontVirginiaWashingtonWest VirginiaWisconsinWyoming
Orbit shows the limit for the road you're on · coming soon to iPhone and CarPlaySee Orbit SI