Project Title Research Agency Reporting Period
Optimal Timing and Design for Bituminous Surface Treatments TRAC/University of Washington  
Principal Investigator Agency Budget No. Agmt./Task No.
Mahoney, J. P.    
Other Investigator(s) Item No. Funding Source
   
WSDOT Program Manager Start Date Schedule Status
Willoughby, Kim
360 705-7978 willouk@wsdot.wa.gov
2009-12-16  
Technical Contact Estimated Completion Revised Completion
2011-06-30  
FHWA or Other Technical Contact Original Estimated Cost Revised Cost
$80,000.00
Research Area % Funds Expended % Work Completed
Construction Maintenance & Materials    
Objective

The three major goals for this study of BSTS are: Goal 1: Develop a recommendation for WSDOT as to the optimal time for placing BSTs on HMA overlays and BSTs on BSTs. Goal 2: Complimentary to Goal 1 is to examine how high ADT levels can be for application of WSDOT BSTs. This has been discussed at prior BST workshops but needs further refinement. Goal 3: Fully investigate and recommend a BST design method for use by WSDOT. Evidence to date suggests that adaptation of an existing method (most likely McLeod) would be sufficient.

Project Progress
New Period Proposed Activity
Problems
Implementation and Other Relevant Information