A Portland-based designer obsessively and impressively maps out the country ... single current and signed Interstate Highway and U.S. Highway in the contiguous 48 states, a project that required ...

I-70 touches the Eisenhower Tunnel, which is the the highest point in the entire interstate system at 11,158 feet, as well as the highest vehicular tunnel in the United States. I-70 was the first ...

A Portland-based designer obsessively and impressively maps out the country ... single current and signed Interstate Highway and U.S. Highway in the contiguous 48 states, a project that required ...