In 2010 it covered 47,182 miles.
As of 2012, the US interstate highway system includes almost 50,000 miles.
In 2010 it covered 47,182 miles.
That would depend on the MPG.
200 miles
As of 2006, there were 46,876 miles of roadway in the Dwight D. Eisenhower National System of Interstate and Defense Highways.
Texas has the most interstate highway miles with 3,233.45 miles. . California has the second most with 2,455.74 miles.
About 30 minutes on the US Interstate highway system.
About 3.5 hours on the US Interstate Highway System.
On the US Interstate Highway system, about 12 hours.
It's 3,073 using US highway 50.
It's 3,073 using US highway 50.