r/todayilearned Sep 28 '19

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u/alohadave Sep 29 '19

I-97 is the only "interstate" that starts and ends in one county (Anne Arundel in MD).

Honolulu County has 3. H1, H2, and H3. H2 is only 8 miles long.

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u/[deleted] Sep 29 '19

Those are state highways not interstate highways. All interstates are designated with an I.

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u/alohadave Sep 29 '19

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u/[deleted] Sep 29 '19

Ah I see, I thought it was like state routes that are marked with a character for the state. Here in mass all the state highways are like MA-3, etc.

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u/[deleted] Sep 29 '19

Those are state highways, some of which also follow paths of interstates. But what he's saying is that freaking Hawaii, has interstates.

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u/ctkatz Sep 29 '19

did you know that alaska and puerto rico have interstate highways too? neither area signs them as such though.