Harrisburg, Oregon
UPRR Bridge 662.98 Brooklyn Subdivision Bridge Replacement
Hamilton was the prime contractor for the replacement of an aging 908-foot steel truss bridge crossing the Willamette River in the mid-Willamette Valley. With only five closures of less than 30 hours each, Hamilton replaced the 908-foot bridge in increments while keeping trains moving. Keeping the bridge operational throughout the project challenged the delivery team to innovate new methods of accelerated bridge construction techniques. Work was accomplished using accelerated bridge construction techniques under live rail traffic using bridge slides and vertical jacking. Truss sections were longitudinally slid out while the new truss sections were slid in.
Hamilton played an integral role in designing the temporary work bridges to gain access within the right-of-way and coordinating with the US Coast Guard and Oregon State Marine Board to ensure environmental compliance for all in-water work. The project team refined the work plan during start-up. During early work activities, Hamilton worked with UPRR to identify several Value Engineering proposals that ultimately improved quality and reduced project cost.
Hamilton played an integral role in designing the temporary work bridges to gain access within the right-of-way and coordinating with the US Coast Guard and Oregon State Marine Board to ensure environmental compliance for all in-water work. The project team refined the work plan during start-up. During early work activities, Hamilton worked with UPRR to identify several Value Engineering proposals that ultimately improved quality and reduced project cost.
