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                        Turner-Fairbank Highway Research Center
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      Sivaneswaran (Siva) Nadarajah, Ph.D., P.E.
      
                    
            Senior Research Civil Engineer
      
                    
            Turner-Fairbank Highway Research Center
      
                    
            U.S. Department of Transportation - Federal Highway Administration6300 Georgetown Pike, HRDI-20McLean, VA 22101-2296United States
      
          
    **Email:**nadarajah.sivaneswaran@dot.gov**Phone:** 202-493-3147**Fax:** 202-493-3161**Business Hours:**9:00am-5:00pm ET, M-F
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                Present Serviceability Rating (PSR) Estimation Workbook
		

		
		
					
							
			
		 

    							psr-estimation-workbook-v1.zip

This PSR Estimation Workbook is the companion Microsoft® Excel® Workbook to the Federal Highway Administration’s *Present Serviceability Rating**Computation from Reported Distresses* (Report No.: FHWA-HRT-21-041). The report provides an approach for estimating the PSR based on measured surface distress data to report overall pavement condition, where permitted, to support implementation of the *National Performance Management Measures*. The*National Performance Management Measures: Assessing Pavement Condition for the National Highway Performance Program*was provided in Subpart C of 23 CFR Part 490 and it permitted the use of PSR as an alternative method for reporting pavement conditions for interstate and non-interstate National Highway System locations where the speed limit is less than 40 mph.

Many agencies, however, do not collect PSR on their pavement segments; instead, they use Pavement Condition Index (PCI) or other indices computed from measured surface distresses in their pavement management systems. In light of this, section 490.309(b)(2)(iii) also allows State DOTs to convert other pavement-condition-assessment methods (e.g., the U.S. Army Corps of Engineers PCI) to PSR if the State establishes to FHWA’s satisfaction that the conversion produces pavement-condition ratings equivalent to the PSR method. In support of this rule, FHWA developed the referenced report and this companion Excel workbook to assist with estimating PSR from measured surface distress data. The documentation also illustrates correlations between commonly used indices and the PSR, as described in the Highway Performance Monitoring System Field Manual. In addition, the report also includes a guide for using the Excel workbook.
		
		
		
    
					Last updated: Wednesday, April 14, 2021 U.S. DEPARTMENT OF TRANSPORTATION

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