Once budgeted at a capital cost of $5.26 billion, the project engineers now estimate a 19% over run. That is above and beyond whatever contingency percentage they had built into the project bid. Contingencies typically range from 5% to 12% at the final engineering bid stage. The total cost overrun is cumulatively close to a one-third range.
Would the project had been approved by the legislators and government administrations if they foresaw tis kind of project cost change? Maybe not.
The project construction problems have added another year of delay. 2020 will now be the earliest completion date for the entire system.
At over $6 billion, the Honolulu system is about the same capital cost of the upgraded Panama Canal project due to open sometime in 2016.