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Learn about the Long-Term Pavement Performance Program

The Long-Term Pavement Performance (LTPP) program has monitored more than 2,400 asphalt and portland cement concrete pavement (PCC) test sections throughout the United States and Canada. LTPP test sections contain the common types of pavement in use in the U.S. (general pavement studies [GPS]), and other test sections have been specially constructed to study certain engineering factors in pavement design (specific pavement studies [SPS]).Read more


New Profilers Capture Data on the Road

The Long-Term Pavement Performance (LTPP) program has recently taken delivery of four new, state-of-the-art inertial profiling units. The profilers were manufactured to meet LTPP’s stringent acceptance criteria. The new devices replace LTPP profilers that logged more than 1.2 million miles. A week-long training exercise held in April paved the way for the program to incorporate the new devices into production mode for LTPP.Read More


Testing of Road Performance and Heavy Loads

Anticipated loads from heavy trucks are the primary factor that engineers use to design a pavement’s structure and decide on the thickness of the pavement’s layers. At the extreme, a single pass by a heavy truck can cause a pavement to fail. Research on pavement life requires an understanding of the characteristics of heavy truck loads. Read More


How To Get LTPP Data

The LTPP program makes the world’s largest pavement performance database available annually to the public in Microsoft Access® format and available on thumb drive or DVD-ROM. The Standard Data Release (SDR) 28 may be obtained through LTPP Customer Support Service at ltppinfo@dot.gov. Read More


About Long-Term Pavement Performance

The Long-Term Pavement Performance (LTPP) program was established to collect pavement performance data as one of the major research areas of the Strategic Highway Research Program (SHRP). The first five years of the LTPP program were completed under the funding and direction of SHRP. Since 1991, the Federal Highway Administration (FHWA) has continued the management and funding of the program. The LTPP program is managed by the Long-Term Pavement Performance Team (HRDI-30) under the Office of Infrastructure Research and Development.

The LTPP program is a large research project that includes two fundamental classes of studies and several smaller studies to investigate specific pavement related details that are critical to pavement performance. The fundamental classes of study are the General Pavement Study (GPS) and the Specific Pavement Studies (SPS).  The combined GPS and SPS programs consist of over 2,500 test sections located on in-service highways throughout North America. The LTPP program will monitor and collect pavement performance data on all active sites. The collected data include information on seven modules: Inventory, Maintenance, Monitoring (Deflection, Distress, and Profile), Rehabilitation, Materials Testing, Traffic, and Climatic.

The LTPP Information Management System (IMS) is the central database where all the data collected under the LTPP program is stored. The LTPP IMS was established in 1988. This database is continuously being developed as more data are collected and processed. Four regional offices are established under the LTPP program to coordinate and communicate LTPP-related activities throughout the United States and Canada.





  • Participate in the 2015 T&DI/ASCE-LTPP International Data Analysis Contest

    The International Data Analysis Contest is a joint effort between the Long-Term Pavement Performance (LTPP) program of the Federal Highway Administration and the Task Committee on the LTPP Contest, a subcommittee of the Highway Pavement Committee of the Transportation & Development Institute (T&DI) of the American Society of Civil Engineers (ASCE). The contest is designed to encourage university students, professors, and highway agency engineers from around the world to get involved in using the LTPP database.

    The theme for the 2015 T&DI/ASCE-LTPP International Data Analysis Contest is: Use of LTPP Data for Managing Pavement Assets. This year’s contest includes a challenge theme. The challenge theme for the 2015 T&DI/ASCE-LTPP International Data Analysis Contest is: Develop Pavement Health or Condition Indices Using the LTPP Data. Submissions are due by July 17, 2015. Winners will be recognized at the 95th Transportation Research Board Annual Meeting in Washington, D.C., in January 2016. We look forward to your participation in this year’s contest. Contact: Deborah Walker, 202-493-3068, deborah.walker@dot.gov

  • Calibrating the Falling Weight Deflectometer (FWD) Video
  • LTPP Newsletter, Spring 2013
  • LTPP Newsletter, Winter 2013
  • LTPP Standard Data Release #28




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



» Aramis Lopez
E-mail Aramis
» Customer Service 202-493-3035
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