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Residential (Local) streets will make up 83percent of the total street system backlog in 10 years. <br />To date,residential streets have not been adequately funded for preservation. Between the three <br />bond measures approximately 31 centerline miles have or will receive repair, less than 10 <br />percent of the residential street system. The percentage of streets within the overlay treatment <br />range continues to increase. Looking back, the percentage of residential streets within the no- <br />treatment range has been dropping and is projected to continue so that by 2027,over 57percent <br />of residential streets will require treatment. <br />The primary treatment for residentials to date, 190 lane miles (81centerline miles),hasbeen <br />slurry seals which are included in the no treatment category.Slurry seal treatment may increase <br />the life by five toseven years, and increase the PCI condition. Following this time period these <br />same streets will typically fall into the mid to low end overlay treatement category. <br />18 <br /> <br />