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Interstate Highways Quiz
by Staff
This vast web of interconnected roads helps to power America's economic and military might. How much do you know about the interstate highway system?

In 1919, it took a test Army expedition how long to drive from Washington to San Francisco?

  • 13 days
  • 41 days
  • 62 days

During World War II, Eisenhower was impressed by the speed of movement executed by which army?

  • German
  • French
  • British

True or false: Defense was the primary purpose driving construction of the interstates.

  • true
  • false

What year did a federal act authorize the development of the interstate system?

  • 1956
  • 1944
  • 1961

What year were funds set aside to begin construction of the highways?

  • 1956
  • 1949
  • 1963

In 1944, what was the original recommended length of the interstate system?

  • 30,000 miles (50,000 kilometers)
  • 40,000 miles
  • 50,000 miles

It cost how much to finish the originally conceived interstate system?

  • about $129 billion
  • about $221 billion
  • about $449 billion

About how many miles is the current interstate highway system?

  • about 47,800 miles (76,900 kilometers)
  • about 45,300 miles
  • about 51,200 miles

What country has the world's longest interstate system?

  • Germany
  • China
  • United States

True or false: Standards dictate that at least 1 of every 5 miles of the interstate must be straight so that planes can land during emergencies.

  • true
  • false

How has the interstate system affected mass transit systems?

  • It actually increased mass transit.
  • It didn't really affect them.
  • It caused them to decline.

What was NOT one of the stated purposes of the interstate system?

  • better hitchhiking
  • escape atomic bombs
  • remove slums

Which entity decides maximum speed limits for the highways?

  • federal government
  • each municipality
  • the states

What was the maximum speed limit that states agreed upon in the 1970s?

  • 50 miles per hour (80 kilometers per hour)
  • 55 miles per hour
  • 60 miles per hour

What happened to many neighborhoods that the new interstate highways sliced apart?

  • People marched in support of the construction.
  • They were abandoned.
  • They immediately became more prosperous.

Which state has the highest allowable speeds on highways?

  • Utah
  • Montana
  • Texas

The federal government paid for what percentage of the highway system?

  • 100 percent
  • 90 percent
  • 80 percent

Major north-south interstate highways end in which number?

  • zero
  • five
  • four

Which state was the first to complete construction of its main interstate highways?

  • Idaho
  • Nebraska
  • Iowa

Which entity is responsible for paying for maintenance of the highway in each state?

  • the state
  • federal government
  • local government

Where is the highest point of the interstate system?

  • Montana
  • Utah
  • Colorado

The Federal Aid Highway Act of 1956 envisioned a project that would take how long to complete?

  • 10 years
  • 15 years
  • 20 years

Outside of mountainous regions, what's the maximum standard grade for the interstate highways?

  • 6 percent
  • 8 percent
  • 10 percent

Which interstate highway stretches from San Francisco to New Jersey?

  • I-70
  • I-90
  • I-80

How many bridges and tunnels are there on the Glenwood Canyon stretch of I-70 in Colorado?

  • 40
  • 50
  • 60

Higher-numbered interstate routes are typically located in which parts of the country?

  • Northwest
  • South and West
  • North and East

True or false: Bicycles are permitted on the shoulders of some interstate highways.

  • true
  • false

Construction standards dictated that urban interstate interchanges must be at least how far apart?

  • half a mile (0.8 kilometer)
  • 1 mile
  • 1.5 miles

Under the 1956 act, in which state did the first interstate highway project begin?

  • Virginia
  • New York
  • Missouri

In what year was I-80 finally completed?

  • 1991
  • 1986
  • 1978