Skip Top Navigation

Pavement Notebook

The Pavement Notebook is a series of reports about the performance of the Washington State pavement network.  The reports are designed to be informative and accessible to the Governor, Legislators and the public.  If you have questions or comments, or are interested in more detailed data or data in other formats, please contact the WSPMS Administrator at (360) 709-5473 or

Pavement Asset Management (PDF 2,723 kb)

Pavement Management is a systematic approach to providing, evaluating, and maintaining pavement assets requiring decision making at strategic, network and project levels. Successful Pavement Management has two fundamental characteristics. The first is strong communication between decision makers at different decision levels. The second is a robust Pavement Management System. WSDOT has a long history of Pavement Management and is considered a national leader in both of these respects. The purpose of this document is to provide an informative overview of Pavement Management at WSDOT.
Last Updated: 2/8/2016

Economic Evaluation of Pavement Management Decisions (750 kb)
WSDOT was an early pioneer in the implementation of pavement management and the establishment of a computerized pavement management system. WSDOT performs a Life Cycle Cost Analysis (LCCA) for all new pavement structures, and existing pavements requiring reconstruction using a 50-year analysis period to consider all maintenance and/or rehabilitation activities anticipated over the analysis period. The focus of this paper is the economic evaluation of pavement management decisions made in year-to-year operations, which are based on analyses at the performance period level. The information provided by the economic performance measures are shown to be critical for the efficient planning, prioritizing, and programming of pavement asset management activities.
Last Updated: 2/10/2015


Visualizing Pavement Management Data at the Project Level (2,259 kb)
As a Pavement Management System increases in maturity, so does the amount of information powering it, making it increasingly difficult to efficiently communicate the data. The Washington State Department of Transportation (WSDOT) has a long history of collecting and storing data that is electronically accessible and referenced against a Linear Referencing System (LRS). This paper provides an overview of the implementation and advantages of Segment Viewer, the primary tool used for project level analysis in the Washington State Pavement Management System (WSPMS).
Last Updated: 2/9/2015 

TRB 14-3468 - Evaluation of Maintenance Effectiveness for WSDOT (608 kb)
Pavement maintenance activities can substantially extend the pavement service life or keep it from prematurely failing. Current budget constraints in Washington State necessitate the development of new strategies with regard to pavement maintenance and preservation. The focus of this paper is to evaluate the cost-effectiveness of different pavement maintenance strategies, and improve the procedures for analyzing maintenance tradeoffs. To illustrate the impacts of the maintenance strategy on a network level, three pavement preservation alternatives are compared, and prospective costs are estimated for the Washington State highway network.
Last Updated: 1/2/2014 

TRB 14-2716 - Modeling and Analyzing Budget Constrained Pavement Preservation Strategies (TRB Publication Index)
The Washington State Pavement Management System (WSPMS) has a long and well known history of describing network condition, predicting necessary rehabilitation, and guiding the Washington State Department of Transportation (WSDOT) to the best possible value for pavements meeting an acceptable Level of Service (LOS). This paper provides an overview of (a) the new WSPMS tool to create forecasts, (b) the forecast process, and (c) the performance measures the WSPMS presents users to analyze the results of a forecast. Finally, several funding scenarios are compared and a specific prioritization methodology is recommended for the severely constrained WSDOT preservation budget.
Last Updated: 1/2/2014

2012 Statewide Pavement Performance (PDF 969kb)
A report detailing the overall condition of the Washington State Routes, as categorized from Very Good to Very Poor, and based on data collected from July through October 2012. Information about general condition is provided in groups by Surface Type, Region, County and Legislative District.
Last Updated: 8/21/2013

Previous Versions: 2011 Statewide Pavement Performance (PDF 969kb)
2010 Statewide Pavement Performance Report (12/20/2011) 

State Highway Pavement Performance Trends 1984 - 2012 (PDF 293kb)
A chart detailing general condition for the last 30 years. A similar chart appears yearly in the Gray Notebook.
Last Updated: 8/21/2013

Previous Versions:
State Highway Pavement Performance Trends 1983 - 2011 (PDF 293kb)
State Highway Pavement Performance Trends 1981 - 2010

WSDOT IRI Report (2014) (PDF 671kb)
A report detailing the statewide pavement performance using International Roughness Index (IRI), using both WSDOT and FHWA categorizations.
Last Updated: 1/26/2016

Previous Versions:
WSDOT IRI Report (2013) (668 kb)

WSDOT IRI Report 2012 (PDF 657kb)
WSDOT IRI Report 2011 (PDF 671kb)
WSDOT IRI Report 2010 

WSDOT Surface Type Summary (2014) (PDF 467kb)
A series of charts and tables summarizing highway miles, lane miles and annual vehicle miles traveled (AVMT) for each surface type, as based on the State Highway Log.
Last Updated: 1/26/2016

Previous Versions: WSDOT Surface Type Summary (2013) (443kb)
WSDOT Surface Type Summary (2012) (PDF 421kb)
WSDOT Surface Type Summary (2011) (PDF 435kb)

WSDOT Preservation Miles Paved by Year (2015) (PDF 321kb)
A chart containing the lane miles paved, or projected to be paved, by project type - asphalt (ACP), chip seal (BST) and concrete (PCCP) - from 2001 through 2013.
Last Updated: 9/21/2015

Previous Versions:
WSDOT Preservation Miles Paved by Year (2014) (PDF 321kb)
WSDOT Preservation Miles Paved by Year (2013 Update) (PDF 320kb)
WSDOT Preservation Miles Paved by Year - 2012 Update (PDF 334kb)
WSDOT Preservation Miles Paved by Year - 2011 Update

Average Pavement Life (2015) (PDF 603kb)
A brief overview of average pavement life for asphalt (ACP), chip seal (BST) and concrete (PCCP) in Washington State. Also includes introductory analyses for recent pavement life extension and structure vs. surface life.
Last Updated: 2/11/2016

Previous Versions:
Average Pavement Life (2014) (PDF 485 kb)

WSDOT Average Pavement Life - 2013 Update (PDF 471kb)
WSDOT Average Pavement Life - 2012 Update (PDF 501kb)
Average Pavement Life - 2011 Update