President Dwight D. Eisenhower passed the Federal-Aid Highway Act of 1956 which paved the way (pardon the pun) for the earliest interstate system in the US. The country now has 46,876 miles of roads that run across the country (even Alaska and Hawaii). Check out the other mind-blowing facts about the US highway system.
The numbering systems used interstates are actually different from the number system used for highways. For instance, Interstate 10 (I-10) runs through the southern states, while Highway 10 runs through northern states. This way, motorists will never be confused whether to take I-10 or Highway 10.
The Federal Highway Act of 1944 actually gave the development of the 40,000-mile National System of International Highways the go-signal, but there were still issues pertaining to funding. It wasn’t until the Federal Aid Highway Act of 1956 that funding was finally earmarked for its construction.
. It has been told that one out of every five miles should be straight so that it can be also a runway for planes. While this has happened, there are otherwise no rules which dictate such design.
Including the potholes! The pothole on I-75 near Detroit, Michigan is called by many as the nation’s biggest pothole, which is responsible for destroying about 25 tires.
However, the bridge drew flak because it was too small, so this led to the construction of a newer, bigger and taller bridge. The old bridge was demolished.
One of the reasons of having interstate and highway systems is to enable evacuation of major cities, in the event of a disaster such as a nuclear attack.
Texas traffic engineer Richard Oliver made the original design of the shield. His creation was picked out of 100 entries in a nationwide design contest in 1957.
Nowadays, every state in the US (as well as its territories) sets its own speed limits.
However, as the construction began, communities were either displaced or broke off. This led some groups of people to start protesting against it, and activists halted the construction in many of the states’ highways.