2025-08-29 PL-CRC-2025-000034 Section 106 Consult Waikaumalo Stream Bridge Rehab Project

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Mr. Matthew Clark, Chairperson HWY-DS 2.21046 August 28, 2025 Page 2 bridge inspection conducted by the Hawaii Department of Transportation (HDOT). The project activities will consist of the following: • Repairing/replacing and repainting all deteriorated steel members • Repairing spalls and delamination in the abutments,pier, concrete deck, sidewalk, and bridge railing • Repairing cracks in the abutments,piers, concrete deck, sidewalk, and bridge railings • Repairing/replacing bridge bearings • Replacing deck joins/joint seal • Evaluating and rehabilitating concrete rubble masonry wingwall • Spalling on pier caps and changing bearings Additionally, if scour issues are discovered during bridge inspections, the project may consist of footing upgrades and addressing scour issues for the bridge foundation. If footing upgrades or scour countermeasures are required, in-water work will occur. No other project activities will require in-water work. If any other additional deteriorating bridge elements are discovered during field studies, the project will also consist of replacing or repairing these elements. Furthermore, the bridge deck may need to be widened to accommodate Americans with Disabilities Act-compliant sidewalks. Widening will not increase capacity of the bridge or add additional traveling lanes. Railings will also be replaced to meet current design standards. The majority of work will be completed during working hours and one lane of contraflow traffic would be allowed during construction. Repairing and replacing the bridge bearings will require full bridge closure which will warrant night work in order to prevent major traffic impacts. Consultations Entitled consulting parties during the Section 106 process includes the Advisory Council of Historic Preservation, SHPO, NHO, and if applicable, local governments and applicants for federal assistance,permits, licenses and other approvals. NHO and/or Hawaiian Descendants NHO and Native Hawaiian descendants with ancestral, lineal, or cultural ties to, cultural and historical property knowledge of and/or concerns for, and cultural or religious attachment to the proposed APE are asked to provide a response to this letter within 30 days of notification. Other Individuals and Organizations Individuals and organizations with legal, economic, or historic preservation interest are requested to respond within 30 days of notification, demonstrate interest in the proposed undertaking, and provide intent to participate in the Section 106 process. Your participation is subject to FHWA approval. APE We would like to invite you to comment on the proposed APE. See Attachment 1.