Jacking System Slides the Holbrook Canal into Position
Minimizing the amount of time state highway 266 was shut off to traffic was a primary objective during the reconstruction of the bridge structure over Holbrook Canal. Utilizing an innovative Accelerated Bridge Construction (ABC) method Kiewit, Jacobs Engineering and the Colorado Department of Transportation developed a plan to build the replacement bridge adjacent to the existing bridge. The new bridge was initially used as a detour while the deficient bridge was demolished. Once demolished, the new bridge was then closed to traffic and needed to be slid into the position of the original bridge.
A lateral bridge slide method was utilized to the slide the new bridge into position. Enerpac provided a hydraulic solution capable of pushing the new 44.5 foot bridge structure into position on PTFE sliding elements using a lateral-slide method. Enerpac supplied two RR-Series double acting hydraulic cylinders each with their own ZU-Series hydraulic pump and integrated pendant control. The pendant control allowed the operator to maintain individual control and a means of recovery from misalignment and wedging of the bridge structure between the abutments. Utilizing Enerpac equipment Kiewit was able to complete the slide in 52 minutes, a full two hours ahead of schedule.