Located at a deep-water port facility on the Willamette River in Portland, Oregon, Gunderson is a unit of The Greenbrier Companies (NYSE:GBX). Gunderson's customers include all Class 1 and many short line railroads, shippers, leasing companies, and ocean shipping companies. Since 1960, Gunderson (including its predecessor companies) has produced more than 100,000 railcars.