FINAL PLANS ER 27 008 - Kaumualii Highway Drainage Improvement

This document comprises the final construction plans for the State of Hawaii Department of Transportation project ER-27(008), addressing drainage improvements in the vicinity of Omao Stream Bridge along Kaumualii Highway. The project encompasses comprehensive site work including demolition of the existing 24-inch reinforced concrete pipe (RCP) drain crossing the highway, which will be filled with controlled low-strength material (CLSM) and abandoned in place. The scope requires installation of a new 42-inch reinforced concrete pipe, drain manhole, grated drain inlets, and a concrete outlet structure. Additional work includes construction of grouted rubble paving, reinforced concrete apron, and asphalt concrete pavement, along with chain link fencing installation and erosion control matting. Site preparation activities include clearing, grubbing, excavation, backfilling, grading, and grassing. The final plans provide detailed technical specifications, design standards, and construction methodologies necessary for bidders to prepare accurate proposals and contractors to execute the work.

The final plans document establishes the engineering design parameters and construction standards that will govern the project execution. These plans serve as the basis for contractor bid preparation and represent the Department of Transportation's requirements for all material, equipment, and workmanship standards. The document includes detailed drawings, cross-sections, specifications, and technical notes that define the drainage system configuration, structural requirements, and quality standards that must be met during construction.