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Assessment of the I-5 Portland Cement Concrete Pavement in King County: Executive Summary

Description: The Interstate 5 portland cement concrete pavement (PCCP) in King County has been in service for over 40 years, twice its planned design life. As such, I-5 is in need of a rehabilitation/reconstruction effort. This study provides the Washington State Department of Transportation (WSDOT) information that will aid decision making about the timing, locations, and type of rehabilitation or reconstruction.

Extensive pavement conditions/distress data provided by WSDOT were summarized, analyzed, and used to develop visual tools to communicate the condition of the I-5 PCCP. The performances of the non-rehabilitated, diamond ground, and the dowel bar retrofit and diamond ground PCCP were summarized and compared. Use of such information shows that about 66 percent of I-5 in King County is in need of rehabilitation or reconstruction. To further illustrate these conditions, Arc GIS was used to map the various distresses/conditions, and the results suggest which sections of I-5 should be addressed early in the rehabilitation/reconstruction

The report concludes with a broad assessment of expected I-5 conditions and necessary WSDOT actions for five-year increments (0 to 5 years, 5 to 10 years, and greater than 10 years).

  • Date Published: December, 2007
  • Publication Number: WA-RD 682.2
  • Last Modified: April 16, 2009
  • Authors: Joe P. Mahoney, Michael A. Hansen, Newton C. Jackson, Carol A. Hunter, Linda M. Pierce.
  • Originator: Washington State Transportation Center (TRAC)
  • # of Pages: 18 p., 748.09 KB (PDF)
  • Subject: Pavements, Rehabilitation (Maintenance), Pavement distress, Roughness, Pavement maintenance, Wear, Pavement management systems, Portland cement concrete, Reconstruction, Mapping, Geographic information systems.
  • Keywords: Portland cement concrete, pavement, performance, wear, IRI, slab cracking, faulting, Interstate 5, I-5, King County, Washington state.
  • Related Publications: Development of Revised Pavement Condition Indices for Portland Cement Concrete Pavement for the WSDOT Pavement Management System (WA-RD 682.3) ; Assessment of the I-5 Portland Cement Concrete Pavements in King County (WA-RD 682.1).

This abstract was last modified November 13, 2015