03/13/2017 City Council Agenda - Laserfiche WebLink

Home Browse Search

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