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Hanford Viaduct

Overview

Crews are currently pile-driving concrete production piles at the northern portion of the Hanford Viaduct near Grangeville Boulevard. Nearly 7,000 production piles will be needed to provide foundation support for the Hanford Viaduct, which will take high-speed rail trains over Grangeville Boulevard, the San Joaquin Valley Railroad, and State Route 198.

The reason contractors perform pile driving is that some types of soils are subject to liquefaction during an earthquake, which means the soils lose their strength or stiffness and behave like a liquid. Piles are driven deep into the ground so that they still provide support for a structure even if the soil around them doesn’t.

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