Over the years we have had the opportunity to build railroad trestles for various owners. Many Class 1, Regional, and Shortline operators have to upgrade and rehabilitate infrastructure in order to maintain or increase capacity. Because of the increased demand we devoted resources to our Rail division.
We develop designs, methods, and materials to allow train traffic through with minimal interruptions while maintaining an aggressive construction schedule. Our goal is to build each project as quickly as possible and get our clients back to their core business – running trains. We specialize in Design-Build projects and operate throughout the Western United States.
Mid Willamette Valley, Oregon
Start Date: Spring 2013 / End Date: October 2014
Hamilton replaced a 908-foot-long steel truss bridge crossing the Willamette River in Harrisburg, Oregon for the Union Pacific Railroad. Our team successfully replaced the aging, speed restricted 100-year-old railroad bridge while keeping it operational for Union Pacific and Amtrak train schedules, which required careful planning, meticulous scheduling, and consistent stakeholder communication.
We constructed parallel work trestles for access outside of scheduled closures and worked adjacent to the live rail lines without interrupting service in order to remove portions of the old substructure, install new drilled shaft foundations, construct columns and cast-in-place concrete caps, pre-assemble and stage the new Deck Plate Girders (DPG’s).
During five bridge closures of less than 30 hours each, Hamilton incrementally removed portions of the old truss. Using a vertical jacking and horizontal slide system that our team developed, we slid segments of the old trusses out of the alignment for removal and slid the new 126-foot steel spans into place. UPRR then tied into the existing lines at the end of each closure. During each of the five bridge slides, our team performed the work in almost half of the allotted closure time.