Unified Distress Severity Framework and Enhanced CRS Calculation Models for Illinois Pavements

The Illinois Department of Transportation (IDOT) uses the Condition Rating Survey (CRS) to assess the condition of pavement statewide and predict future performance. The rating system helps the agency to plan and manage transportation projects. IDOT’s CRS currently has differing definitions for pavement distress and varying severity levels. This project aims to better define distress levels used in IDOT’s CRS as well as create a data-driven, standardized framework for the severity and extent of pavement distresses. The research team will redevelop IDOT’s existing calculation and prediction models for CRS and update the agency’s CRS tool. The updated CRS models will improve the accuracy of condition ratings, which will help IDOT to better select pavement projects and treatments as well as plan the life cycle of pavement.

Language

• English

Project

• Status: Active
• Funding: $929,999.00
• Contract Numbers:

  R27-291

• Sponsor Organizations:

  Illinois Department of Transportation

  Bureau of Research
  2420 South Dirksen Parkway
  Springfield, IL  United States  62764
• Managing Organizations:

  University of Illinois, Urbana-Champaign

  Illinois Center for Transportation
  1611 Titan Drive
  Rantoul, IL  United States  61866
• Performing Organizations:

  University of Illinois, Urbana-Champaign

  Department of Civil and Environmental Engineering
  Newmark Civil Engineering Laboratory
  Urbana, IL  United States  61801-2352
• Principal Investigators:

  Ouyang, Yanfeng

  Al-Qadi, Imad

• Start Date: 20260816
• Expected Completion Date: 20290815
• Actual Completion Date: 0
• USDOT Program: Research and Development

Subject/Index Terms

• TRT Terms: Condition surveys; Pavement distress; Pavement performance; Predictive models
• Identifier Terms: Illinois Department of Transportation
• Subject Areas: Highways; Maintenance and Preservation; Pavements; Planning and Forecasting;

Filing Info

• Accession Number: 01999436
• Record Type: Research project
• Source Agency: Illinois Department of Transportation
• Contract Numbers: R27-291
• Files: RIP, STATEDOT
• Created Date: Aug 17 2026 10:29AM