U.S. Department of Transportation
Federal Highway Administration
1200 New Jersey Avenue, SE
Washington, DC 20590

Skip to content U.S. Department of Transportation/Federal Highway AdministrationU.S. Department of Transportation/Federal Highway Administration

Federal Highway Administration Research and Technology
Coordinating, Developing, and Delivering Highway Transportation Innovations

About LTPP | Data Collection | Analysis | Products | Pooled Fund Studies | Operations/Analysis Feedback Reports | Publications | Projects |
Customer Survey
| Contact



Operations/Analysis Feedback Reports


In 1996, the Long-Term Pavement Performance (LTPP) program instituted a data analysis and operations feedback system to enable users of the LTPP database to report situations encountered during data analysis sponsored by Federal Highway Administration (FHWA) that suggest or demonstrate the need for corrective actions or further investigation. Use of this reporting mechanism by others was also encouraged. Applicable situations encountered include, but are not limited to:

  • The absence of critical data for specific test sections.
  • Data that appear to be incorrect, contradictory, or otherwise suspect.
  • Data that are not currently collected but that are needed to fill voids identified during analysis.
  • Recommendations arising from the analysis as to how data collection procedures might be improved.


A spreadsheet summary of these feedback reports by the categories below is provided here (.zip, 502 KB). Each summary provides a synopsis of the problem, the status, and the resolution. Reports are considered resolved when it has been determined if a problem exists and action has been taken.

Potential problems may be reported for any of the following:

  • Distress
  • Drainage
  • Falling Weight Deflectometer (FWD)
  • Friction
  • General Pavement Studies (GPS)
  • Information Management System (IMS)
  • Materials
  • Profile
  • Seasonal Monitoring Program (SMP)
  • Specific Pavement Studies (SPS)
  • Traffic


To report a problem with the LTPP database, please print and fill out a Feedback Report Form (.pdf, 8 kb) and submit it to:

Long-Term Pavement Performance Program, HRDI-30
6300 Georgetown Pike
McLean, VA 22101-2296
Fax: 202–493–3161
Email: LTPPINFO@dot.gov

PDF files can be viewed with the Acrobat® Reader®



Office of Infrastructure R&D Links

» Office of Infrastructure R&D
» Infrastructure R&D Program
»Long-Term Bridge
  Performance Program

»Long-Term Pavement
  Performance Program
» Infrastructure R&D Experts
» Infrastructure R&D Laboratories
» Infrastructure R&D Projects
» Infrastructure R&D Publications
» Infrastructure R&D Topics


LTPP Email Distribution List

» Contact LTPP Customer Support Service Center at ltppinfo@dot.gov if you would like to be added to our email distribution list for LTPP Newsletters and other announcements.


FHWA Pavement Links

» Design
» Construction
» Preservation
» Maintenance
» Management
» Rehabilitation


More Information



» LTPP Team Leader
» Customer Service
Federal Highway Administration | 1200 New Jersey Avenue, SE | Washington, DC 20590 | 202-366-4000
Turner-Fairbank Highway Research Center | 6300 Georgetown Pike | McLean, VA | 22101