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Welcome to the LTPP Products Online website. This website represents a major effort by the LTPP program to make LTPP Product applications more accessible to the transportation community. In the years to come there will be an increasing number of applications developed by the LTPP program which will form part of this website. Stay tuned for more applications!
If you are already registered with the LTPP Products Online web site, please login using your E-Mail Address and Password.
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| If you are not already registered or have lost your password, please select Register Now to create your user login or select Get Password to retrieve your password. |
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- International Contest on LTPP Data Analysis (1/26/2010) -
The Federal Highway Administrations (FHWA) Long Term Pavement Performance Program (LTPP) and the Transportation and Development Institute, American Society of Civil Engineers (ASCE) are co-sponsoring the International Contest on LTPP Data analysis. The contest is designed to encourage university students, professors, and highway department engineers from around the world to get involved in using the LTPP database.
The contest deadline is June 30, 2010. We would like for you to encourage all your colleagues and friends to participate. Please send all papers to Andrea Baker, (ASCE), abaker@asce.org. Please download the following Adobe Acrobat PDF files for detailed information on the contest:
Contest Participants Manual 2010
2010 Annual International Contest on LTPP Data Analysis (English)
2010 Annual International Contest on LTPP Data Analysis (Spanish)
If you have questions or need additional information, please contact FHWA:
Antonio Nieves Torres
Federal Highway Administration
1200 New Jersey Avenue, SE. E73-446
Washington, DC 20590
E-mail: antonio.nieves@dot.gov
Phone: 202-366-4597
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- ESAL Calculator (3/19/2007) -
ESAL Calculator was developed by MACTEC Engineering and Consulting, Inc. It was previously released as utility software that was included as a part of the LTPP SDR package, Equivalent Single-Axle Load (ESAL) estimates, commonly used to determine pavement loading. State highway agencies provide these estimates to LTPP using various estimation methods for the years where no traffic loading data is available. ESAL estimates in the LTPP database are considered as computed parameters since they are not measured values. The ESAL Calculator utility was developed for calculating the ESAL estimates to assist LTPP database users.
What does it do?
ESAL Calculator computes the annual estimate of traffic applied to the LTPP lane when monitored weight data are available. The utility uses the 1993 AASHTO Pavement Design Guide method and data from LTPP’s current SDR release to create the estimates. The inputs needed to calculate the estimates include layer thickness, material type, climatic region, and monitored traffic weight data. If there are no monitored weight data for a year, the estimate is not computed for that year. After the estimate is computed, tables for annual estimates and intermediate values are produced.
The annual estimates table lists the site, year, and KESAL estimate for that year. One of the intermediate tables indicates the source of the data and the input values for items other than traffic and section properties. Intermediate tables for the asphalt concrete and portland cement concrete structural information also are produced. In cases where all layer data are not available, particularly for overlays, typical values for the experiment are substituted |
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The LTPP Products Online web site has been developed to provide access now, to the following applications:
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LTPP DataPave Online - LTPP DataPave Online provides fast and easy means of navigating the complex structure of the LTPP relational database. This tool provides visual navigation using either GIS mapping capabilities "By Location" or by using a more comprehensive "By Criteria" means for selecting data. The application displays data and provides download capabilities for use in data analysis project.
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LTPP Pavement Online - LTPP Pavement Online (Rigid Pavement Design Software) assists users by automating the design and analysis procedures. The application uses the improved guidelines for PCC pavements as published in the "1998 Supplement to the AASHTO Guide for the Design of Pavement Structures, Part II - Rigid Pavement Design & Rigid Pavement Joint Design". |
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LTPP WIM Cost Online - LTPP WIM Cost Online allows users to calculate the costs associated with the placement of Weigh-in-Motion sites. The application takes into account costs such as equipment, staff, and maintenance required to keep the site operating at the level expected by LTPP. |
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LTPP DiVA Online - LTPP DiVA Online is designed to provide the LTPP Regional Support Contractors with a method for reviewing time series distress data and distress images in accordance with Directive D-30: Guidance for RSC Time Series Review of Distress Data. |
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| LTPP Products Online has been developed by iENGINEERING Corporation. Please visit the FHWA LTPP Web Site for more information on the LTPP program and database. |
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