Fukunaga & Associates, Inc. (FAINC) served as the prime engineering consultant for the project, as well as the civil design engineer. As the prime consultant, FAINC handled all project management responsibility and coordination with the project manager Naval Facilities Engineering Command (NAVFAC) Pacific, the water system owner NAVFAC, Hawaii and the sub-consultant team.
This Pearl Harbor Channel Underwater Waterline Crossing project demonstrated how existing technologies and innovative use of pipe materials can be extended beyond conventional applications to provide effective solutions. The choice of an innovative high-strength pipe material allowed the use of horizontal directional drilling without the need for a protective casing or more costly methods such as micro tunneling. The continuous 3,500 foot long pipe string was pulled through the under-channel bore hole in one day thereby limiting the effects on the existing residences and Naval operations in the area.
Other key design parameters included ensuring adequate cover below the harbor mud line and avoiding existing utilities, bunkers, pile-supported docks, buildings and other structures. The design phase also required selection of appropriate work and staging areas in Pearl Harbor & Ford Island, where the entire fused pipeline could be laid out for the continuous pull-in.
The design team completed the project on time and within the design budget. The project was put out to bid on schedule in 2012, with construction commencing, also as scheduled, in 2013. The project was substantially completed in 2015.