H-3 in Ohau from Honolulu to Kaneohe Bay is believed to be the most expensive Interstate Highway ever built, on a cost per mile basis. Its final cost was $1.3 billion, or approximately $80 million per mile.
When it first hit the drawing boards in 1963, the estimated cost of the 16-mile H-3 freeway was $50 million to $70 million. The scheduled completion date was 1972. When completed in June, 1997, it will have cost $1.3 billion.
Please turn the construction over to the Taiwanese. They completed a major subway system underground in Taipei in 3 yrs on a 4 yr plan and under budget. A few ceiling tiles fell on in an 8.2 earthquake.
I have seen it and am amazed at the quality of workmanship involved.