Randall Benton / rbenton@sacbee.com

A large truck delivering an enormous piece of a new flood gate to Folsom Dam exits the I-80 freeway onto Madison Avenue near Foothill Farms on Thursday, March 13, 2014.

First giant new Folsom Dam spillway gate delivered

Published: Friday, Mar. 14, 2014 - 6:16 am

The first of 12 giant new Folsom Dam spillway gates arrived late Thursday after a 600-mile journey by truck from Vancouver, Wash.

The delivery took nearly a week of travel at night, because the gates are as wide as two freeway lanes and Interstate 5 was subjected to rolling closures, orchestrated by a highway patrol escort, during shipment.

The new $900 million spillway is designed to double Folsom Dam’s flood protection rating for the Sacramento region. It features a huge concrete spillway, controlled by six giant steel tainter gates backed up by six bulkhead gates.

About 31 more truckloads will be required to deliver the remaining gate pieces from their builder, Oregon Iron Works. Installation is expected to begin this summer, with spillway completion expected by October 2017.

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