Nimitz Highway Rehabilitation

Scope:  Design of soil anchors for the stabilization of the Honolulu Harbor seawall; load rating analysis of 5 slip covers and one bridge; upgrading 1,876 LF of bridge railing to comply with NCHRP-350, TL- impact forces; design traffic signal and highway lighting foundations; retaining walls; catch basin modifications; ADA compliant ramps for sidewalks suspended over water; spall repair; and thrust blocks and hangars for 12″...

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Mamalahoa Hwy. Emergency Replacement of Paauau Stream Bridge

Scope: Prime consultant for the emergency bridge replacement design.  Paauau Stream overflowed and damaged the existing bridge during a heavy rainfall. This project improved the flow of Paauau Stream and replaced an existing 40-foot bridge with a new 4-span 120-foot long precast-prestressed concrete slab bridge in accordance with Federal Highway Standards.  The project required realignment Kamani Street, the main access road to the town and...

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Kawela Bridge Replacement

Scope: Prime Consultant for the replacement of the Kawela Stream Bridge.  The new 47’ wide by 56’ long bridge replaces the existing bridge that is structurally deficient and has an unacceptable hydraulic capacity.  The superstructure consists of prestressed voided slabs with a 6” concrete topping.  The bridge deck is designed to be integral with the abutments for the purpose of increasing the live load capacity of the bridge.  The...

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Bridge Rehabilitation of Maunawili Road Bridge

Scope: Design of a new bridge included installing the new abutments behind the existing stone channel protection walls.  This methodology eliminated the need for extensive permitting and reduced the design time and estimated construction costs significantly.  Because of hydraulic opening constraints, the superstructure was designed as precast/prestressed concrete planks, overlaid with a 5-1/2” topping.  The abutments are supported by 42”...

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Salt Lake Boulevard Bridge Over Halawa Stream Rehabilitation

Scope: Prime Consultant for the feasibility study, rehabilitation design and seismic analysis of the multi-span bridge superstructure.  The project was instigated by the discovery of numerous shear cracks in the prestressed concrete girders.  The feasibility study and preparation of construction documents involved the investigation of the various methods of rehabilitation, and to research the feasibility of using carbon fiber laminate for...

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Puowaina Street Bridge

Scope: The project objective was to evaluate the bridge seismic performance, perform load rating analysis and recommend a bridge rehabilitation scheme to remove the bridge from the City’s structure deficiency list, optimize service level, vehicle safety and extend the service life of the bridge.  The bridge is a three-span reinforced concrete bridge with three-column bents founded on a combined spread footing built in 1936.  There were two...

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