U.S. Interstates by LuskT

The only place where "mirror" interstates (e.g., I-74 and I-47) meet is located just outside what state capital?

I-110 in Biloxi, I-264 in Norfolk, and I-5 in Portland all include examples of what feature unusual to interstate highways?

What is the only city whose 3-digit interstates are consecutive integers?

One heavily traveled interstate highway passes through more states than any other. How many states does it pass through on its 1,900+-mile route?

At roughly 18 miles, the shortest 2-digit interstate in the continental U.S. is located entirely in which state?

The greater metropolitan area of what city is the largest served by only one interstate (including auxiliaries)?

If you count east/west branches such as I-35E/I-35W as unique, Texas has the most uniquely-numbered 2-digit interstates. If branches are not counted separately, what other state has the most?

For most of the western half of its former route, Historic U.S. 66 parallels which interstate?

Three U.S. Interstates have a northern terminus at the 49th parallel (i.e., the Canadian border between Minnesota and Washington). Two are I-5 and I-15. What is the third?

Connecting San Jose to Oakland on the east side of San Francisco Bay, Interstate 880 is also known by what name? It made headlines in October 1989.

The unsigned Interstate 878, which runs only 0.7 miles, serves as a connector to which airport?

The "low point" in the interstate system is approximately 52 feet below sea level, along which route that passes near El Centro, California?