The 2017 F-14 Pavement Rehabilitation Project (Project) was consisted of four separate roadways, grouped together into a single roadway project. Total yearly budget for the F-14 Projects is approximately $2 million, and is managed through design and construction by City staff. The City utilizes consultants for roadway testing and preparation of project Plans and Specifications. For the 2017 Project, a total of 2.3 lane miles of pavement were rehabilitated ( 12,200 square feet). Existing roadway PCI’s ranged from a low of 21 to a high of 34. As the first task during design, coring and pavement deflection testing determined that a significant portion of the roadway deterioration was a result of poor subgrade soils. Rather than remove and replace existing subgrade soils, the design instead incorporated the sustainable treatment method of Cold In Place Recycling (CIR) with cement and lime treatment and a hot mix asphalt overlay. This treatment method meets both sustainability and budgetary goals of the City, providing a strengthened roadway subgrade section without the need to export existing materials and backfill will quarried base. While there is some offhaul associated with the project, it was estimated that truck traffic associated with the full depth reclamation method was approximately 30% of that which would have been required for a full roadway reconstruction with traditional methods. Additionally, impacts to the public are reduced due to the shorter total construction time, the window of potential stormwater impacts due to construction activities is narrowed, and total greenhouse gas emissions were minimized.
Carmelita Road, Alcantara Avenue, Cortez Avenue, Monterey Road
City or County Responsible for Project:
City of Atascadero
Roads: Efficient and Sustainable Road Maintenance, Construction and Reconstruction Projects.
Narrative Description Of Your Entry:
Deputy Director of Public Works
City of Atascadero
6500 Palma Avenue