On the other hand, he said, the Interstate system drew economic development.

The idea is to bring those roads up to the standards of the Interstate system.

His model helped make feasible the design and construction of the Interstate system.

The road was soon included in the Interstate system, so it would be eligible for 90 percent federal financing.

So even though the nation's Interstate system is just about finished, the barrier builders have miles to go.

But the Interstate System has also given us a lot that we didn't expect.

And what's the big deal about the Interstate System anyway?

That was one of the things the Interstate system was designed for; use it.

After 35 years of construction, the Interstate System is nearly finished.

They would not, however, alter the original 90/10 formula for finishing the Interstate system.