What are the main interstates that run across the us?

The main interstates that run across the United States include Interstate 10 (I-10), which spans from California to Florida, and Interstate 40 (I-40), stretching from California to North Carolina. Interstate 80 (I-80) connects San Francisco to Teaneck, New Jersey, while Interstate 90 (I-90) runs from Seattle to Boston. Additionally, Interstate 70 (I-70) traverses from Utah to Maryland. These interstates form crucial east-west and north-south routes across the country.