HA YW ARD BAKER PR OJECT SUMMAR Y Vibro Replacement for Ground Improvement for Grade Separation Colton Crossing Owner Union Pacific Railroad (UPRR), Omaha, NE General Contractor Skanska USA Civil West, Riverside, CA Resident Engineer AECOM, Los Angeles, CA Geotechnical Design Engineer HDR, Omaha, NE he Burlington Northern Santa Fe (BNSF) Railway and Union Pacific Railroad (UPRR) rail-to-rail Colton Crossing in Colton, California, was one of the

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