Interstate 90, the longest of the east-west U.S. interstate highways, is 3184 mi

Question

Interstate 90, the longest of the east-west U.S. interstate highways, is 3184 miles long, stretching from Boston, Massachusetts, at I-93 on the eastern end to Seattle, Washington, at the Kingdome on the western end. It travels across 13 northern states; the number of miles and number of intersections in each of these states are listed below.

State WA ID MT WY SD MN WI No. of Inter.    
Miles 53
316 11
70 84
574 19
214 66
411 47
274 45
210 State IL IN OH PA NY MA No. of Inter.    
Miles 15
102 25
174 41
252 9
43 44
390 20
154

Explanation / Answer

Interstate 90, the longest of the east-west U.S. interstate highways, is 3184 mi

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