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03/13/2017 City Council Agenda
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03/13/2017 City Council Agenda
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3/13/2017
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3/13/2017
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INTRODUCTION <br />BACKGROUND <br />This report has been compiled for use by the Street Repair Review Panel (SRRP). It is intended <br />to provide background on projects included in the 2012 voter -approved Bond Measure 20-197, <br />the schedule for construction of these projects, and the details of bond projects constructed in <br />2016. The street repair measure approved $43 million in bonding authority over a five-year period, <br />with construction of bond -funded projects starting in 2014 and completing in 2018. <br />KEY TERMS <br />Bond - Bond Measure 20-197, Bonds to Fix Streets, approved by Eugene voters in November <br />2012. <br />Inlay — An inlay treatment consisting of removing a <br />specified depth of the existing pavement surface and <br />repaving that same depth with a new pavement surface. <br />This treatment works well where the pavement distress <br />is isolated to the removed portion of the pavement. At <br />times, the inlay treatment needs to be supplemented <br />with an "overlay," which is when an additional thickness <br />of pavement is placed over the inlaid pavement. An <br />overlay is used when engineering analysis shows that <br />the existing structure does not have sufficient strength <br />to accommodate the projected traffic volume. The term <br />"overlay" is commonly used to describe both the inlay <br />and overlay practices. <br />One of the benefits of performing an inlay treatment is <br />that the new pavement surface will match existing <br />adjacent structures and not increase the street cross <br />grade. Another benefit of an inlay is that in the removal <br />of the existing pavement, contractors grind up the old <br />pavement and stockpile the material to be recycled into <br />new pavement. <br />Pavement Removal on 5th Avenue <br />In -Place Cement Treated Base (ICTB) — A reconstruction treatment that utilizes and reuses <br />existing road base materials. The existing surfacing is removed and cement slurry is added to <br />strengthen the existing base. The base is pulverized to a specified depth and allowed to cure for <br />18-48 hours. Once cured, the roadway is repaved. This treatment works well on roadways where <br />the existing base is primarily aggregate. Two of the benefits of performing an ICTB treatment are <br />the savings in resources from reusing existing materials and the reduction in the duration of impact <br />for the surrounding neighborhood. <br />
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