There are 12 major highways in Idaho and they are:
There are three major U.S. Interstate highways in Idaho. They are I-15 (196 miles), I-84 (275 miles) and I-90 (74 miles).
Interstate:
I 15; I 84; I 86; I 90
US Highway:
US 2; US 12; US 20; US 26; US 30; US 93; US 95
I-95, I-84, I-15, and I-90 are the major federal highways in Idaho.
Idaho has 11 major highways and they are:I-15I-90I-84I-86US - 93US - 20US - 91US - 12US - 95US - 2US - 30
the major highways are #29 and#133
There are many major highways in the United States. A few of the major highways are I-80, I-75, and I-70.
The major north-south highways are I-75 and I-69. The major east-west are I-94 and I-96
I-95 is one of the well known highways.
Three major cities in Idaho are: Boise, Idaho Falls, and Pocatello.
They were and still are the major transportation routes.
Highways link cities - there are no major cities in the northern part of Canada
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