We Bet You Didn’t Know That Arizona Was Home To The Only Metric Highway In The U.S.

Only three countries on Earth – Liberia, Myanmar, and the United States – use the customary unit system of measurement. In the 1980s, there was a nationwide push toward the metric system here in America, and Arizona is still feeling its effects. I-19 is a metric highway in Arizona that runs between Nogales and Tucson, and it’s the only one in the country. What a quirky claim to fame!

Did you know about the metric highway in Arizona? If so, have you ever driven on it? Tell us your thoughts in the comments! Don’t forget to check out our previous article for another quirky find in Arizona.

Address: Interstate 19, I-19, Nogales, AZ, USA

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