HI STP 360 Hana Highway Bridges

The project involves improvements to 6 existing bridges along State Route 360, also referred to as Hana Highway, between mile markers 6.0 and 28.4 on the island of Maui in Hawaii. The purpose of the project is to improve the existing bridges to meet current seismic criteria, loading capacities, and crash-tested railings while maintaining the historic and rural character of the bridges and existing roadway alignment. The scope of work includes replacement of the 6 existing bridges, with proposed bridges ranging in length from 23 feet to 85 feet. The project will require numerous night closures and multi-day closures of Hana Highway, and public outreach during construction will be crucial to keep residents and the traveling public updated about construction activities and roadway closures. Key features of the project include: • Replacement of 6 existing bridges • Proposed bridges range in length from 23 feet to 85 feet • Five single-span bridges and one two-span bridge • Construction of proposed abutments behind existing cement rubble masonry abutments • Numerous night closures and multi-day closures of Hana Highway • Public outreach during construction • Approximate quantities of principal work items include removal of stone masonry, roadway excavation, structure excavation, structural backfill, roadway aggregate, asphalt concrete pavement, structural concrete, precast prestressed concrete slabs, reinforced steel, bridge railing, micropiles, and stone masonry guardwall