Interstate H-3 Is A Interstate in the U.S. state of Hawaii on the island of Oahu going from Interstate H-1 and Interstate H-201 in Halawa to Marine Corps Base Hawaii Main Gate. It is one of the most Expensive interstates Ever Built at $1.3 Billion Dollars. Thats $80 Million Per Mile Of Interstate!

It is known for A Easy route between Kaneohe And Honolulu, And For Tourists a Scenic path through the Ko'olau Mountains.