it took 27years to build interstate 75.
1962
it began in 1956 along the Pigeon River in Haywood county and was officially opened in 1990.
Interstate highways
Because rivers were the Interstate highway system.
Because the country is going broke and can't afford it.
You'd get 400 miles west
The first interstate highway built in the United States was the Dwight D. Eisenhower National System of Interstate and Defense Highways, with the initial segment constructed in Missouri. This stretch of highway, known as the Interstate 70, opened in 1956. It was part of a larger initiative to create a nationwide network of highways to improve transportation and enhance national defense.
The SF-400 was built in Japan.
400 B.C.
It was built to preservse the ibis that was killed there. Built when only 400 remained.
The John Deere model 400 was built from 1965 on...not 100% sure on the specifics...for more info on the 400...try the related link...