WHPacific assisted the Port of Portland in developing alternatives for rehabilitating and relocating portions of Taxiway B. The information delivered included field investigation data and engineering reports on subsurface soil conditions, alternative asphalt, and concrete pavement sections developed for the projected aircraft traffic loads, life cycle cost analysis of the different pavement sections, and constructability impacts of alternatives proposed.
After consultations with Port staff on the initial results of the study, WHPacific made final recommendations on the pavement sections to be constructed, developed construction phasing scenarios, and prepared a preliminary Estimation of Construction Costs. The Preliminary Design Report also noted specific areas of design to be more closely investigated during final design.
After completion of preliminary design and final design, construction support services were added to the scope. WHPacific completed the PCC pavement plan and profiles, jointing layout and typical sections. Construction support included submittal and RFI review, site visits, engineering support and project close-out.