US Route 20 in Island Park, Idaho is America’s longest highway at 33 miles. The city was incorporated in 1947 to sell liquor outside city limits. The Federal-Aid Highway Act allowed for 41,000 miles of interstate highways and there are 250 million cars on American roads. Interstate highways are named based on their direction.
The longest highway in America is US Route 20 in Island Park, Idaho, which is 33 miles (53k) long. The city consists primarily of resorts and lodges along Route 20 whose owners decided to incorporate in 1947 to circumvent Idaho liquor laws which do not allow liquor to be sold outside the city limits.
Read more about American roads:
In 1956, the new Federal-Aid Highway Act was passed which allowed for the construction of 41,000 miles of interstate highways across the nation.
As of 2010, there are 250 million cars and trucks on American roads.
There is a system for naming American interstate highways: North-South routes are assigned odd numbers and East-West routes are assigned even numbers.
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