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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

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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

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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

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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.

 

 

 

Features

 

 

 

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
»Foundation
  Characterization
  Program (FCP)
» 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

 

Contacts

» Aramis Lopez
202-493-3145
E-mail Aramis
 
» Customer Service 202-493-3035
E-mail:LTPPinfo@dot.gov
 
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