BNSF Bridge 4.42 Replacement, Adams County, Colorado

Wilson & Company performed bridge engineering, developed construction phasing, and prepared initial cost estimates to replace 100-year-old Bridge 4.42. The design accommodated the existing bridge, keeping the track in service through all stages of construction until the span change-out, and used temporary spans and shoring to accommodate substructure construction under live load.
In addition to the design, our team provided construction management services including around-the-clock construction observation and inspection for the track outage and installation. During the outage, the entire existing bridge was removed precast wingwalls and backwalls were attached to the new abutments, and the new steel girder spans were set in place. Initially planned as a 52-hour outage, all members of the construction team worked continuously to finish in a little over 40 hours. 
Services Provided 
  • Structural design for the steel beam span superstructure
  • Drilled shaft foundations
  • Cast-in-place concrete bent caps
  • Precast wingwalls
  • Precast abutment backwalls
  • Construction management services
  • Construction observation and inspection