Title
Resolution to Approve Amendment No. II to the Professional Services Agreement with Parsons-Brinckerhoff Michigan, Inc., for the Broadway Bridges Reconstruction Project ($152,858.40)
Memorandum
Attached for your review and approval is a resolution that will approve an amendment to our Professional Services Agreement with Parsons-Brinckerhoff Michigan, Inc. (PBM) in the amount of $152,858.40 for project management, professional engineering, and inspection services, performed in conjunction with the replacement of the Broadway Bridges.
During the final phase of the construction of the Broadway Bridges Reconstruction Project in May 2004 it was discovered that two of the decorative, pre-cast columns on the bridge were beginning to crack. Upon discovering this, we directed the contractor to repair the columns. At the time, the primary focus of the Contractor was on completing the original construction and opening the bridge structures and Depot Street to traffic. The Contractor submitted a proposed repair methodology that was rejected and re-submitted several times. The Contractor was not able to begin repairing the columns until Spring 2005. In Spring 2005 we discovered several more columns had begun to crack. When no obvious causes of the failure were observed, it was decided that it would be necessary to study the cause of the cracking in order to assure that any repair work performed would remedy the problem. After thoroughly discussing this issue with our Consultant, PBM, it was determined that it would be necessary to hire the services of an expert that had a background in material sciences and forensic investigation. PBM then subcontracted with the firm of Wiss, Jenny, Elsner, Inc. (WJE) to undertake this investigation. These services were contained in Amendment No. I to our Agreement with PBM that was approved by Council on July 3, 2006 (R-322-7-06).
WJE studied all aspects of the pre-cast columns design and construction. The results of th...
Click here for full text