Print Case Study
Union Pacific Railroad Company
HDR Engineering, Inc.
November 19, 1993
Approximately 250 tons of CON/SPAN® precast units were shipped from Salem, Illinois, to Oxman, Oregon, for installation as an extension of an arch bridge built in 1902. Union Pacific Railroad Company needed to extend the bridge to accommodate double tracking. Following the one-day installation of the units, the structure was backfilled under 20 feet of cover and tracks were laid. The trains began running over the CON/SPAN extension in just one and one half weeks after the installation.
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