Praised as one of the greatest public works project in American history, the Interstate Highway System is about to turn 70.

A new $107 million highway connects Washington County to I-395, easing truck traffic and completing a decades-long ...

Story continues below map of former mines in New Jersey. What is under Route 80's lanes? The problem, however, may have far more to do with how and where the highway was built than by whom.

Praised as one of the greatest public works project in American history, the Interstate Highway System is about to turn 70.

Praised as one of the greatest public works project in American history, the Interstate Highway System is about to turn 70.