List of Interstate Highways
There are 70 primary Interstate Highways in the Interstate Highway System, a network of controlled-access freeways in the United States. They are assigned one- or two-digit route numbers, whereas their associated "auxiliary" Interstate Highways receive three-digit route numbers. Typically, odd-numbered Interstates run south-north, with lower numbers in the west and higher numbers in the east; even-numbered Interstates run west-east, with lower numbers in the south and higher numbers in the north. Highways whose route numbers are divisible by "5" usually represent major coast-to-coast or border-to-border routes (ex. I-10 travels from Santa Monica, California, to Jacksonville, Florida, traveling from the Pacific to Atlantic oceans). Additionally, auxiliary highways have their numbering system where a different number prefixes the number of its parent highway.
Georgia (U.S. state)
Georgia has an extensive interstate highway system including 1,200 miles of interstate highway and 20,000 miles of federal and state highways that facilitate the efficient movement of more than $620 billion of cargo by truck each year. Georgia’s six interstates connect to 80 percent of the U.S. population within a two-day truck drive. More than $14 billion in funding has been approved for new roadway infrastructure.