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?
During World War II, Eisenhower was impressed by the speed of movement executed by which army?
True or false: Defense was the primary purpose driving construction of the interstates.
What year did a federal act authorize the development of the interstate system?
What year were funds set aside to begin construction of the highways?
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?
- 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.
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?
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?
Which state was the first to complete construction of its main interstate highways?
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?
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?
How many bridges and tunnels are there on the Glenwood Canyon stretch of I-70 in Colorado?
Higher-numbered interstate routes are typically located in which parts of the country?
- South and West
- North and East
True or false: Bicycles are permitted on the shoulders of some interstate highways.
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?
- New York
In what year was I-80 finally completed?