Explanation
1. BACKGROUND:
This legislation authorizes the Director of Public Service to execute a construction contract modification with Complete General Construction Company for the Bridge Rehabilitation - Riverbend Over Scioto Big Run project and also authorizes additional construction administration and inspection funds.
Work performed under this contract consisted of complete superstructure replacement, substructure replacement and minor approach pavement, drainage and guardrail work for the existing bridge on Riverbend Road over the Big Run Creek.
The work being performed under this modification is replacement of the existing piers. During construction it was determined that the original piers were beyond rehabilitation and in need of replacement. In order to minimize delays to the project it is in the best interest of the City to modify the existing construction contract.
When the contractor began demolition of the structure, it was noticed that the existing cast in place piling on the project was beginning to fracture at the welds. At this point the design engineer was contacted and notified of the issue and the contractor was directed to remove the existing piers completely to prevent them from inadvertently collapsing. In doing this, the existing pier columns can no longer be used to support the existing structure. The design engineer proposed that new H piles would be driven in between the existing piling and the new pier cap would be cast on top of the new piling as was shown in the original plan. It was also recommended that the new piling would be encased in concrete to protect from debris and corrosion.
In order for the contractor to complete the original bid work, this work must be performed. If this portion of the work was bid out, the current contractors work would be delayed, and a delay claim would be filed.
The cost of this modification was negotiated with the contractor based upon state average cost data.
The original cont...
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