PORTLAND, OR, OCTOBER 13, 2016
Union Pacific completed its rail fastening system replacement work throughout the eight miles of curved track in the Columbia River Gorge. The track throughout the curves is secured with a fastening system that includes spikes instead of lag bolts, enhancing defect detectability during inspections. (…)
via UP: Union Pacific Completes Railroad Spike Fastening System Replacement in the Columbia River Gorge.