Interstate H-1 Waimalu Viaduct Widening
|Client Name:||State of Hawaii, Department of Transportation, Highways Division|
|Disciplines Applied:||Civil Engineering, Surveying & Mapping, Planning & Permitting (for EA, planning for relocation of 12 families, NPDES permitting, public participation program)|
RMTC was contracted to prepare designs, plans, specifications and cost estimate for the construction of this project which featured widening of the Interstate Route H-1 (H-1) westbound by approximately 30 feet between the Kaonohi Street overcrossing and the Pearl City Off-Ramp. The purpose of the widening was to meet current interstate standards and enhance traffic flow. The existing road section consisted of five 11-foot wide lanes, a 4-foot wide median shoulder and a 10-foot wide right shoulder. Now completed, the new road section consists of six 12-foot lanes, a 10-foot median shoulder and a 12-foot right shoulder.
Modifications were made to the following: