Oldcastle Precast Wins Seattle Gig

Oldcastle Precast will supply precast concrete Z-shaped superstructure segments and 20-foot tall seawall face panels for the Seattle’s new $371 million Elliott Bay Seawall Reconstruction Project.

Acting as a retaining wall between Elliott Bay and the waterfront, the new seawall structure consists of a cast-in-place support slab with custom precast concrete face panels, precast concrete Z-superstructure segments, and precast sidewalk panels.

To successfully manufacture the contracted precast seawall components, Oldcastle Precast worked closely with Mortenson-Manson to customize the design and engineering of the fascia panels and specialty Z-superstructure segments essential to the seawall’s stability.

The Z-superstructures were a vital structural component, acting as the concrete backbone of the new seawall’s cantilevered sidewalk.

Funded mostly by a 30-year $290 million bond measure that voters approved in 2012, the Elliott Bay Seawall Project, from South Washington Street to Virginia Street, is scheduled for completion in mid-2016.

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