The Lahaina Bypass 1B-2 Project is the last section to be developed before the public can begin to fully realize the benefits of reduced congestion in and around Lahaina. Envisioned in 2005 to address traffic concerns and projected growth in the area, the opening of the project has been anticipated for a long time. Hawaiian Dredging Construction Company, Inc. (HDCC) was the successful bidder on the initial segment, Phase 1A, which brought major changes to the region and fostered much community support by outreach programs that successfully informed the community of the work to be done and the schedule that would be followed to accomplish the work in a timely and efficient manner. Designs that transformed the landscape of dirt and rock into a well thought out combination of bridges and roadways that combined to enhance the community's lifestyle as well as the public's driving experience through the area have been the recipient of numerous engineering awards and community support. During the construction of the Bypass’s initial segment, Phase 1A, a major and significant archeological find along the original planned route required HDCC and their design team to find a solution. Working with the State, the Community, Native Hawaiian Organizations, and numerous other stakeholders, a new design that maintained the original concept was found that eliminated the problem and garnered overwhelming support from the community. That same Design-Build team is again assembled to perform the task of designing and constructing the 1B-2 phase to be an integral part of the community life that it serves.
The Lahaina Bypass 1B-2 Project begins at the southeastern termini of the previous 1B-1 phase, and continues southeast, where it will tie into the existing Honoapiilani Highway (State Route 30) near cut mountain. The project consists of constructing 2.7 miles of divided 4-lane highway, earth embankments, culvert drainage crossings (Corrugated Metal Pipe (CMP), concrete box culverts), a Geotextile Reinforced Soil (GRS) over-crossing bridge structure at Punakea Street, drainage detention basins, two at-grade signalized intersections (Kai Hele Ku and Hokiokio Place), and a southern connector road. While the earthworks will be constructed for the future build-out of a divided 4-lane highway, only the mauka (in land) lanes will be concrete paved, like the current 1-B1 phase. Future paving of the makai (ocean side) lanes will be determined when capacity dictates and funding is determined.
The GRS abutments of the Punakea Street over-crossing are designed to complement the views of the coastline and the mountains and blend into the existing landscape. Natural contours of the project topography are maximized to minimize the required excavation \ embankment and reduce the amount of drainage facilities required. Roadways and Intersections are designed to provide for future expansion with limited interruption to the existing facilities. Phase 1B-1 and 1B-2 are designed to work in conjunction with each other to provide and effortless drive through the area and provide the State with a minimal amount of maintenance and upkeep for years to come. All the designs are both State and AASHTO compliant and will include enhancements that will provide increased durability by exceeding the minimal requirements of the specifications.
The Lahaina Bypass 1B-2 Project is contracted through a Design Build procurement as part of the HDOT – Central Federal Lands Highways Division Partnership Projects to deliver ten bridge and other highway improvement projects throughout the islands.
Hawaiian Dredging Construction Company’s project management team is led by Project Principal Mike Nakashima, Project Design-Build Manager, Craig Okita, Design Lead, Brian Lock from Wilson Okamoto Corporation (WOC), and other designer sub consultants including KSF, Inc, plan on using the same well-thought-out management principles needed to make this project a success, such as:
1. Early and continual engagement of Central Federal Lands Highways Division (CFLHD) and the Owner, State of Hawaii Department of Transportation (HDOT) throughout the design and construction process.
2. Utilization of realistic schedules and milestones to accomplish tasks critical to project completion.
3. Engagement of the community to maintain and grow the support critical to any successful project. This is made easier by the fact that HDCC and their consultants are part of, and engaged in all aspects of life in the community, from youth sports, to tourist oriented destination businesses, to the local lifestyle, all for over 100 years.
4. Conscience and meaningful commitment to maintain the environment for generations to come.
5. Commitment to designing and building facilities and improvements that serve their purpose cost efficiently, without sacrificing quality.
6. Trust by the permitting agencies, as well as other stakeholders, that HDCC and their team will consider all the effects of improvements that are made, and that a conscience effort to mitigate any negative effects will be made.
The project approach is simple; design and construct a project usable to the community with minimal environmental disruption without sacrificing form or function, along with delivering exceptional quality within budget. We have strived to make the project as maintenance free as possible by minimizing guardrail and barriers as much as possible to preserve view planes while maintaining safety; simplifying and standardizing designs for drainage and the pavement and incorporating the latest technology to maximize the roadway lifecycle. The design will create a landscape that will complement the iconic ocean views as well as to function as a filtering system for runoff, trapping silt and other pollutants that can damage the pristine waters which serves as a lifestyle for many within the community for generations to come.