US Interstates by a Single Clue

All answers are mainline (i.e. 1- or 2-digit highways). Answers must correspond to the yellow box.

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Last updated: January 23, 2018

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First submitted	January 23, 2018
Times taken	212
Average score	50.0%
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Clue	Answer
The longest Interstate highway	90
The shortest mainline Interstate highway	97
The newest interstate	14
The longest intrastate interstate	45
The only mainline interstate in ME, RI, and DE	95
The only mainline interstate in Nebraska	80
Ends at both Canada and Mexico (as of now)	5
The only east-west interstate to end at a foreign country	94
Runs from near New Orleans to Chicago	55
Follows the Appalachian Mountains from NY to TN	81

Clue	Answer
Has numerous short segments from Michigan to Texas	69
Follows the eastern edge of the Rocky Mountains	25
Runs for over 800 miles in Texas alone	10
Splits into east and west routes twice	35
Is in one state but has three different sets of exit numbers	87
Lent its name to a Modest Mouse song	8
Goes through Great Smoky Mountains National Park	40
Is multiplexed with the same number US route for its entire length	41
Follows the Connecticut River	91
Has an exit for Zzyzx Rd	15

4 Comments

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Level 55

Feb 5, 2018

the newest interstate is I-14

Level 89

Oct 20, 2018

Easy to guess many if you get the even north-south, odd east-west, starting with low numbers in the south and west and having long routes divisible by 5.

Level 45

Feb 6, 2019

I-87 is longer than I-45

Level 86

Mar 25, 2020

I-76 has two miles in Nebraska