Title
Staff Report for a Resolution Approving Plans and Specifications and Calling for Bids for Annual Overlay/Rehabilitation 2012-13, Project No. 2013.0050
Staffreport
SUMMARY AND RECOMMENDATIONS
This project provides for the reconstruction or rehabilitation of various street segments in San Leandro.
Staff recommends approval of the plans and specifications and calling for bids for the subject project.
BACKGROUND
City staff conducts periodic pavement condition surveys using our Pavement Maintenance System to establish the condition of City streets. Based on these surveys, various City streets were recommended for rehabilitation or reconstruction based on the following: 1) pavement condition; 2) amount of project funds available; 3) proximity to future land development projects; and 4) other engineering considerations.
Road rehabilitation will be done through two methods. 1) Heavily weathered pavement with a stable base will have the top two inches of asphalt concrete (AC) removed and replaced. 2) Pavement with depressions from wheel loads will have four inches of AC removed and replaced. The AC will be installed in two lifts of two inches each with a layer of pavement reinforcement mesh in between. The mesh helps dissipate vertical crack stresses and prolongs the life of the pavement by mitigating crack propagation.
Reconstruction will be done by installing a new pavement section consisting of AC on top of a cement stabilized base. This process involves demolishing the existing AC pavement, mixing cement into the road base to provide a stable foundation, and installing a surface course of new AC. This method of rehabilitation costs significantly less than traditional road reconstruction methods due to reduced raw materials and hauling.
Analysis
Based on information obtained from the pavement condition survey and discussions between Engineering and Transportation Department and Public Works Services Street Maintenance staff, the following str...
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