03/13/2017 City Council Agenda - Laserfiche WebLink

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Nearly 12,000 tons of RAP was used on 2016 capital paving projects, reducing the need for nearly 690 tons of asphalt cement and 11,000 tons of aggregate to be mined, refined, processed and subsequently shipped to the pavement producers. Using warm mix asphalt with typical reclaimed asphalt pavement content resulted in an estimated reduction of 911 MT COze compared to using hot -mix asphalt pavement with no reclaimed pavement on 2016 capital paving projects. Funding Status and Forecast In 2012, project costs were estimated for each street for the purpose of selecting streets to be included in the bond measure. These cost estimates were based on the overall surface condition of each street as described in the City's Pavement Management System. A unit cost was assigned to each street based on whether the street rehabilitation treatment was assumed to be a reconstruct or an overlay. Approximately 18 months prior to construction, more detailed pavement testing is conducted to determine specific treatments to each street based on the existing pavement structure, subgrade soil conditions and traffic loading. Actual rehabilitation treatments may be different than the original assumptions, requiring more, less or a combination of rehabilitation techniques. For the streets scheduled for 2016 construction, the 2012 estimated cost with inflation was $7,564,000. As of January 1, 2016, although not all project contracts have been closed out, the projected actual cost for the 2016 bond projects is $5,481,000; a net difference of $2,083,000 below the costs projected in 2012. Several of the 2016 projects that were originally scoped as reconstruct projects were completed with alternative rehab techniques that reduced overall project costs. We continue to see a steady increase in construction costs and we expect that trend to continue over the remaining two years of the Bond. Details on an annual project -by -project basis are provided in the following pages and summarized in Appendix A. As construction is completed each year, Appendix A will be updated and included in future reports to track the funding status of the overall bond funds. The 2012 bond measure also allocated an average of $516,000 for pedestrian and bicycle improvements each year. In 2016, the project expenditures on all pedestrian and bicycle improvements funded by the bond are estimated at $810,000, which is $293,000 over the annual average allocation. Due to expenditures to date, $547,000 is available for the final two years to maintain the annual average allocation.