LTPP Activities
Working on it... August 26, 2024
LTPP Standard Data Release 38 (SDR 38) release is now online. This version of the SDR contains changes made to the data since the August 2023 Data Release. Detailed information on these updates is available in the Release Notes. August 13, 2024
This document is a companion to the Federal Highway Administration report Development and Use of the LTPP Analysis-Ready Materials Dataset.
March 13, 2024
This report documents methodologies, predictive models, and computational procedures to estimate annual average daily truck traffic (AADTT) and AADTT by Federal Highway Administration (FHWA) vehicle classification in pavement design lane using Highway Performance Monitoring System (HPMS) data as inputs. March 13, 2024
This Long-Term Pavement Program LTPP newsletter provides quarterly updates on the LTPP program. This Winter 2024 issue focuses on LTPP Analysis-Ready Datasets: Saving Users Thousands of Hours of Data Wrangling and Giving More Focus to Data Analysis. March 13, 2024
This report is focused on predicting and quantifying curling and warping of jointed portland cement concrete pavements. Researchers used the comprehensive research-quality datasets available through the Long-Term Pavement Performance (LTPP) program, supplemented by additional datasets collected by other Federal Highway Administration studies. August 26, 2024
LTPP Standard Data Release 38 (SDR 38) release is now online. This version of the SDR contains changes made to the data since the August 2023 Data Release. Detailed information on these updates is available in the Release Notes. August 13, 2024
This document is a companion to the Federal Highway Administration report Development and Use of the LTPP Analysis-Ready Materials Dataset.
March 13, 2024
This report documents methodologies, predictive models, and computational procedures to estimate annual average daily truck traffic (AADTT) and AADTT by Federal Highway Administration (FHWA) vehicle classification in pavement design lane using Highway Performance Monitoring System (HPMS) data as inputs. March 13, 2024
This Long-Term Pavement Program LTPP newsletter provides quarterly updates on the LTPP program. This Winter 2024 issue focuses on LTPP Analysis-Ready Datasets: Saving Users Thousands of Hours of Data Wrangling and Giving More Focus to Data Analysis. March 13, 2024
This report is focused on predicting and quantifying curling and warping of jointed portland cement concrete pavements. Researchers used the comprehensive research-quality datasets available through the Long-Term Pavement Performance (LTPP) program, supplemented by additional datasets collected by other Federal Highway Administration studies. March 13, 2024
The purpose of this Guide is to help Long-Term Pavement Performance (LTPP) data users determine traffic parameters suitable for their analyses and identify LTPP tables containing such parameters. January 4, 2024
This report provides documentation regarding the objectives, scope, and approach of a study to develop an Analysis-Ready Materials Dataset (ARMAD), which integrates the material properties of several categories of pavement layers. October 30, 2023
This year's student data analysis contest is officially open. We encourage students to use LTPP InfoPaveTM to address specific infrastructure issues or challenges. Papers are due by August 1, 2024. August 28, 2023
LTPP Standard Data Release 37 (SDR 37) release is now online. This version of the SDR contains changes made to the data since the July 2022 Data Release. This release also contains MERRA 2 data update and web site security improvements. Detailed information on these updates is available in the Release Notes. July 13, 2023
Please note the deadline to submit your entry for the LTIP Student Data Analysis Contest is fast approaching! May 8, 2023
This Report documents all activities performed as part of the Long-Term Pavement Performance (LTPP) program’s Warm-Mix Asphalt (WMA) Study. The report describes the overall conduct of the project with a focus on the guidelines for recruitment, selection, implementation, construction, sampling, testing, and monitoring of the LTPP Specific Pavement Studies (SPS)-10 “WMA Overlay of Asphalt Pavement” experiment. February 10, 2023
This TechBrief summarizes the planning, conduct, and outcomes of the Federal Highway Administration’s (FHWA’s) Long-Term Pavement Performance (LTPP) program Data Analysis Workshop. February 9, 2023
This year's student data analysis contest is officially open. We encourage students to use LTPP InfoPaveTM to address specific infrastructure issues or challenges. Papers are due by August 1, 2023. December 12, 2022
This TechBrief provides an introduction and overview of the LTPP Analysis-Ready Materials Dataset (ARMAD). The full report, which details the development and implementation of the dataset, will be issued later in 2022 or early 2023. August 29, 2022
LTPP Standard Data Release 36 (SDR 36) release is now online. This version of the SDR contains changes made to the data since the July 2021 Data Release. This release also contains MERRA 2 data update and web site security improvements. Detailed information on these updates is available in the Release Notes. June 10, 2022
This research note is a release announcement of the new Federal Highway Administration (FHWA) Long-Term Pavement Performance (LTPP) ARMAD and associated report Development and Use of the LTPP Analysis-Ready Materials Dataset (Forthcoming). LTPP Manual for Collecting and Processing Longitudinal Profile, Macrotexture, and Transverse Profile Data
April 14, 2022
This manual describes operational procedures for collecting longitudinal profile, macrotexture, and transverse profile data for the Long-Term Pavement Performance program using a High-Speed Survey Vehicle. March 22, 2022
This year’s student data analysis contest is officially open. We encourage students to use LTPP InfoPaveTM to address specific infrastructure issues or challenges. Papers are due by July 29, 2022. February 3, 2022
Four papers were selected for awards in the first Long-Term Infrastructure Performance (LTIP) Student Data Analysis Contest. The student winners are:
Agnimitra Sengupta, Drs. Sudeepta Mondal, S. Ilgin Guler, Parisa Shokouhi, Pennsylvania State University.
1st Place (Bridge): “A State-Based Hidden Markov Model Approach to Impact Echo Signal Classification” Miaomiao Zhang, Hongren Gong, Yuetan Ma, Xi Jiang, and Baoshan Huang from University of Tennessee. 1st Place (Pavement): “Nomogram for Predicting Asphalt Pavement Roughness after Preventive Maintenance Based on LTPP Longitudinal Analysis” Muhammad Munum Masud from Michigan State University. 2nd Place (Pavement): “Guidelines for Effective Weigh-in-Motion (WIM) Equipment Calibration, Application for Modeling WIM Errors, and Comparison of the ASTM and LTPP Protocols” Greg Seleznev from Howard Community College. 3rd Place (Pavement): “Diagnosing Changes in WIM Measurement Accuracy and WIM Calibration Needs Using Data Visualization and Statistical Modeling Tools”
The LTIP Student Data Analysis Contest is designed to encourage students to use the Long-Term Pavement Performance (LTPP) Web portal, LTPP InfoPaveTM or the Long-Term Bridge Performance (LTBP) Web portal, InfoBridgeTM to address specific infrastructure issues or challenges. The LTPP program has had a long tradition of holding a student contest and this was the inaugural year for the LTBP program student contest. December 3, 2021
This brochure discusses how some of the features allows users to narrow their searches by selecting the type of asset (bridge, pavement, or tunnel), materials, structural element, and the target of the investigation. September 30, 2021
This TechBrief summarizes the planning, conduct, and outcomes of the Federal Highway Administration’s (FHWA’s) Long-Term Pavement Performance (LTPP) program Data Analysis Workshop. September 13, 2021
This TechBrief discusses how FHWA collects a tremendous amount of valuable data through cutting-edge testing technology, sponsored research, and other collaborative efforts. September 10, 2021
Papers have been received and are currently under review. Winners will be announced by November. July 20, 2021
This is a friendly reminder that the deadline for submitting an entry to the Federal Highway Administration’s 2021 Long-Term Infrastructure Performance (LTIP) Student Data Analysis Contest is July 30, 2021. If you have not already done so, please submit your entry, or encourage students with whom you teach or work with to submit to the contest. July 19, 2021
LTPP Standard Data Release 35 (SDR 35) release is now online. This version of the SDR contains changes made to the data since the July 2020 Data Release. This release also contains MERRA 2 data update and web site security improvements. Detailed information on these updates is available in the Release Notes. April 15, 2021
Please join the Long-Term Infrastructure Performance team for a webinar update of the Transportation Pooled-Fund (TPF) Program’s studies focusing on the Long-Term Pavement Performance (LTPP) test sections.
THURSDAY
April 22, 2021 2:30–3:30 p.m. ET REGISTER NOW!** TELECONFERENCE NUMBER (877) 336-1828 Access Code 1391629 The webinar will be recorded. ** The login and password you use to register for the meeting will be required to join the webinar. January 1, 2021
The Federal Highway Administration (FHWA) is pleased to announce the Long-Term Infrastructure Performance (LTIP) Student Data Analysis Contest, designed to encourage university students to use pavement or bridge performance data to study the various factors affecting pavement and bridge lifecycles, and to develop a technical paper to document their research. December 14, 2020
There are several enhancements and bug fixes made available in the LTPP InfoPave 2021 release since the last version issued in July 2020. Please see Release Notes for information on these enhancements and bug fixes. For more information, please contact the LTPP Customer Support Center at ltppinfo@dot.gov. July 27, 2020
LTPP Standard Data Release 34 (SDR 34) release is now online. This version of the SDR contains changes made to the data since the July 2019 Data Release. This release also contains MERRA 2 data update and web site security improvements. Detailed information on these updates is available in the Release Notes. April 24, 2020
The Data Analysis Student Contest is a joint effort of the Federal Highway Administration’s Long-Term Pavement Performance (LTPP) program 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 to get involved in using the LTPP database, and thereby contribute to a better understanding of pavement performance. January 10, 2020
There are now new features made available in the LTPP InfoPave 2020 release since the last version issued in November 2019. Please see Release Notes for information on these new features. For more information, please contact the LTPP Customer Support Center at ltppinfo@dot.gov. September 19, 2019
The LTPP MRL has moved to a new location in May 2019. It is currently in the process of reorganizing its inventory and installing pallet racking - a process which has taken several weeks. However, the facility is in operation during this process. At this time, fulfillment of material request is limited by the maneuverability of containers within the confined storage space. Shipment of requested materials may be delayed depending on the size of the material request.
The MRL is committed to providing the best possible service and will strive to meet your needs. For requests and questions, please contact Timin Punnackal at NCE by phone at (775) 329-4955 or by email at mrl@ncenet.com.
July 5, 2019
"The FHWA purchased four Transverse Profile Measurement Systems (TPMS) in late 2017. These laser-based systems have been installed on each of the four High-Speed Survey (HSS) vehicles that were already collecting pavement longitudinal profile and macrotexture data for the LTPP program. A single transverse profile consists of 2048 transverse data points obtained at 0.98-inch longitudinal intervals triggered by the signal from the Distance Measuring Instrument (DMI) in the HSS vehicle. This replaces the old manual Dipstick method for collecting transverse profile data and provides enhanced safety for the LTPP program. July 5, 2019
LTPP Standard Data Release 33 (SDR 33) release is now online. This version of the SDR contains changes made to the data since the July, 2018 Data Release. This release also contains MERRA 2 data update and web site security improvements. Detailed information on these updates is available in the Release Notes. July 1, 2019
REMINDER: Submissions are due by July 1, 2019. Winners will be recognized at the 99th Transportation Research Board Annual Meeting in Washington, DC, January 12, 2020. The theme for the 2018–2019 T&DI/ASCE-LTPP International Data Analysis Contest is: Use the LTPP Data to Evaluate a Question or Concern for Your Region or State. This year’s contest also includes a challenge topic: Application of Data Science and Analytics to Address Transportation Infrastructure Issue(s) Using LTPP Data (Pavement Performance, Traffic, Materials, Construction Quality). May 7, 2019
On May 22, please join ODOT as they host a technical day highlighting the performance of Ohio SPS-2 project. Activities will include learning about the specific project construction, an overview of the FHWA LTPP Program, analysis results comparing predicted performance against actual performance to date, research Ohio University and ODOT have conducted on the project, MIT scan results, and lessons learned from the national SPS-2 experiment. Eight similar Tech Days have been completed in the last year. Please check the web link for more information all SPS-2 Tech Days. May 1, 2019
As of May 1, 2019, the FHWA MRL has moved and is currently in the process of reorganizing its inventory and installing pallet racking—a process which will take several weeks. March 4, 2019
On March 12, 2019, please join ARDOT as they host a technical day highlighting the performance of Arkansas's SPS-2 project. Members of the highway agency will meet with the industry pavement representatives to discuss the project's construction; receive an overview of the LTPP Program; present analysis results comparing predicted performance against actual performance to date; show the results of MIT scan assessments on SPS-2 projects; and discuss the SPS-2 Pavement Preservation Pooled Fund Study led by WSDOT. Following the presentations, participants will travel to the LTPP SPS-2 site and walk the test sections to assess performance first hand as well as to provide recommendations regarding appropriate maintenance treatments. Six similar Tech Days were successfully in 2018. Please check the web link for more information all SPS-2 Tech Days. February 26, 2019
On March 12, 2019, please join Caltrans as they host a technical day highlighting the performance of California's SPS-2 project. Members of the highway agency will meet with Federal and industry pavement representatives to discuss the project's construction; receive an overview of the LTPP Program; present analysis results comparing predicted performance against actual performance to date; show the results of MIT scan assessments on SPS-2 projects; and discuss the SPS-2 Pavement Preservation Pooled Fund Study led by WSDOT. Following the presentations, participants will travel to the LTPP SPS-2 site and walk the test sections to assess performance first hand as well as to provide recommendations regarding appropriate maintenance treatments. Six similar Tech Days were successfully in 2018. Please check the web link for more information all SPS-2 Tech Days. January 2, 2019
LTPP InfoPave 2019 release is now online. Please see Release Notes for information on new and enhanced features included in this release. For more information, please contact the LTPP Customer Support Center at ltppinfo@dot.gov. September 18, 2018
On October 2nd and 3rd, please join agency and industry in a technical event centered around the performance of Kansas’ SPS-2 project. Activities will include learning about the specific project construction, an overview of preventive maintenance practices as well as Kansas DOT’s pavement management program, analysis results comparing predicted performance against actual performance to date, and a discussion of the SPS-2 Pavement Preservation Pooled Fund Study. Following the presentations, participants will travel to the site and walk the sections to assess performance first hand as well as to provide recommendations regarding appropriate maintenance treatments. Similar Tech Days were successfully completed in Arizona, Colorado, Washington, and Iowa this year, with another event scheduled for North Dakota (October 16-17). Please check the web link for more information regarding SPS-2 Tech Days September 1, 2018
On October 16th and 17th, please join agency and industry in a technical event centered around the performance of North Dakota’s SPS-2 project. Activities will include learning about the specific project construction, an overview of preventive maintenance practices as well as North Dakota DOT’s pavement management program, analysis results comparing predicted performance against actual performance to date, and a discussion of the SPS-2 Pavement Preservation Pooled Fund Study. Following the presentations, participants will travel to the site and walk the sections to assess performance first hand as well as to provide recommendations regarding appropriate maintenance treatments. Similar Tech Days were successfully completed in Arizona, Colorado, Washington, and Iowa this year, with another event scheduled for Kansas (October 2-3). Please check the web link for more information regarding SPS-2 Tech Days. July 5, 2018
LTPP Standard Data Release 32 (SDR 32) is now online. This version of the SDR contains changes made to the data since the July, 2017 Data Release. This release also contains MERRA 2 data update and various improvements to the website. Detailed information on these updates is available in the Release Notes. July 3, 2018
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, and thereby contribute to a better understanding of pavement performance. The theme for the 2017–2018 T&DI/ASCE-LTPP International Data Analysis Contest is: Use the LTPP Data to Evaluate a Question or Concern for Your Region or State. This year’s contest includes a challenge topic: Use the LTPP Data to Evaluate the Impact of Mix and Materials Properties on Individual Distress Types for Asphalt or Concrete Pavements. Submissions are due by July 15, 2018. Winners will be recognized at the 98th Transportation Research Board Annual Meeting in Washington, DC, January 13, 2019. Please see the attached document for a full copy of the 2017–2018 Contest Guidelines. We look forward to your participation in this year’s contest. April 20, 2018
Please join agency and industry in a technical day centered around the performance of Iowa’s SPS-2 project. Activities will include learning about the specific project construction, an overview of preventive maintenance practices as well as Iowa DOT’s pavement management program, analysis results comparing predicted performance against actual performance to date, and a discussion of the SPS-2 Pavement Preservation Pooled Fund Study. Following the presentations, participants will travel to the site and walk the sections to assess performance first hand as well as to provide recommendations regarding appropriate maintenance treatments. A similar Tech was successfully completed in Arizona and Colorado this year, with events scheduled for Washington (May 2), Iowa (May 30) and Kansas (October 2 and 3). Please check the web link for more information regarding SPS-2 Tech Days. April 13, 2018
Please join agency and industry in a technical day centered around the performance of Arizona, SPS-2 project. Activities will include learning about the specific project construction, an overview of preventive maintenance practices as well as Iowa DOT’s pavement management program, analysis results comparing predicted performance against actual performance to date, and a discussion of the SPS-2 Pavement Preservation Pooled Fund Study. Following the presentations, participants will travel to the site and walk the sections to assess performance first hand as well as to provide recommendations regarding appropriate maintenance treatments. A similar Tech was successfully completed in Arizona and Colorado this year, with events scheduled for Washington (May 2), Iowa (May 30) and Kansas (October 2 and 3). Please check the web link for the full report regarding the Arizona SPS-2 tech day April 6, 2018
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, and thereby contribute to a better understanding of pavement performance. The theme for the 2017–2018 T&DI/ASCE-LTPP International Data Analysis Contest is: Use the LTPP Data to Evaluate a Question or Concern for Your Region or State. This year’s contest includes a challenge topic: Use the LTPP Data to Evaluate the Impact of Mix and Materials Properties on Individual Distress Types for Asphalt or Concrete Pavements. Submissions are due by July 1, 2018. Winners will be recognized at the 98th Transportation Research Board Annual Meeting in Washington, DC, January 13, 2019. Please see the attached document for a full copy of the 2017–2018 Contest Guidelines. We look forward to your participation in this year’s contest. April 6, 2018
Please join agency and industry in a technical day centered around the performance of Washington’s SPS-2 project. Activities will include learning about the specific project construction, an overview of preventive maintenance practices as well as WSDOT’s pavement management program, analysis results comparing predicted performance against actual performance to date, and a discussion of the SPS-2 Pavement Preservation Pooled Fund Study led by WSDOT. Following the presentations, participants will travel to the site and walk the sections to assess performance first hand as well as to provide recommendations regarding appropriate maintenance treatments. Similar Tech Days have been successfully completed in Arizona and Colorado this year, with events scheduled for Washington (May 2), Iowa (May 30) and Kansas (October 2 and 3). Please check the web link for more information all SPS-2 Tech Days. April 5, 2018
On March 23, approximately 40 staff representing CDOT, local agencies, industry, and academia participated in the Colorado SPS-2 Tech Day. Activities included learning about the specific project construction, an overview of preventive maintenance practices as well as Colorado DOT’s pavement management program, analysis results comparing predicted performance against actual performance to date, and a discussion of the SPS-2 Pavement Preservation Pooled Fund Study. Following the presentations, participants traveled the site and walked the sections to assess performance first hand as well as to provide recommendations regarding appropriate maintenance treatments. Similar events are scheduled for Washington (May 2), Iowa (May 30), and Kansas (October 2 and 3). Please check the web link for the full report regarding the Colorado SPS-2 tech day. January 2, 2018
LTPP InfoPave 2018 release is now online. Please see Release Notes for information on new and enhanced features included in this release. For more information, please contact LTPP Customer Support Center at ltppinfo@dot.gov. July 5, 2017
LTPP Standard Data Release 31 (SDR 31) release is now online. This version of SDR contains some of the notable updates, additions, deletions, and changes made to the data since the April, 2016 Data Release. This release also contains MERRA 2 data update and web site security improvements. Detailed information on these updates is available in the Release Notes. April 8, 2017
Thank you for joining the Long-Term Pavement Performance (LTPP) Team as the winning papers from the 2015-2016 International Data Analysis Contest were presented along with an overview by the team on how to participate in future contests. March 10, 2017
This Product Briefintroduces the reader to the Long-Term Pavement Performance Bind (LTPPBind) Online Web-based tool for selecting asphalt binder performance grades (PGs). It explains what the tool is, who can benefit from its use, what its main features are, and how and where potential users can find more information. March 10, 2017
This Product Briefdescribes the Long-Term Pavement Performance (LTPP) Climate Tool (intended for use by infrastructure engineers) that provides convenient access to the National Aeronautics and Space Administration (NASA) Modern- Era Retrospective Analysis for Research and Applications (MERRA) climatic data. March 3, 2017
The International Data Analysis Contest is a joint effort of the Federal Highway Administration’s Long-Term Pavement Performance (LTPP) program 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, and thereby contribute to a better understanding of pavement performance. February 24, 2017
The Long-Term Pavement Performance (LTPP) Program Book consists of over 20 years of information from the start of the programing to the present. January 31, 2017
Thanks to excellent support from the Arizona Department of Transportation. FHWA is pleased to announce that construction of the first Arizona SPS-10 project on I-40 Eastbound near Holbrook, Arizona, was successfully completed in May 2016. Six test sections in total were constructed to compare the performance of conventional hot mix asphalt to warm mix asphalt. In addition to the core sections, the Arizona DOT also took this opportunity to construct three supplemental test sections that replicated the three core sections except were constructed with 30% RAP rather than 20% RAP.
January 31, 2017
Thanks to excellent support from the Arizona Department of Transportation. FHWA is pleased to announce that construction of the second Arizona SPS-10 project on I-10 Eastbound near Quartzite, Arizona, was successfully completed in October 2016. Six test sections in total were constructed to compare the performance of conventional hot mix asphalt to warm mix asphalt. In addition to the core sections, the Arizona DOT took this opportunity to construct three supplemental test sections that replicated the three core sections except were constructed with 30% RAP rather than 20% RAP.
January 31, 2017
Thanks to excellent support from the Nevada Department of Transportation. FHWA is pleased to announce that construction of an SPS-10 project on I-580 Northbound just north of Carson City, NV, was successfully completed in June 2016. Seven test sections in total were constructed to compare the performance of conventional hot mix asphalt to warm mix asphalt. In addition to the core sections, the Nevada DOT also took this opportunity to construct four supplemental test sections to study the use of two additional warm mix chemical additives, and the use of a rubberized binder both in a warm mix asphalt section and a hot mix asphalt section.
January 31, 2017
Thanks to excellent support from the Nevada Department of Transportation and Q&D Construction, FHWA is pleased to announce that construction of an SPS-10 project on I-580 Northbound just north of Carson City, NV, was successfully completed in June 2016. Seven test sections in total were constructed to compare the performance of conventional hot mix asphalt to warm mix asphalt. In addition to the core sections, the Nevada DOT also took this opportunity to construct four supplemental test sections to study the use of two additional warm mix chemical additives, and the use of a rubberized binder both in a warm mix asphalt section and a hot mix asphalt section. January 11, 2017
Computed cracking, rutting, faulting, and IRI data for the 10,000 mile “Interstate Pavement Condition Sampling” as well as the report for this project is now available on InfoPave on the NON-LTPP tab. This data was collected by FHWA to verify the suitability of Highway Performance Monitoring System (HPMS) as a data source for national pavement performance measures as well as testing the methods of the “National Performance Management Measures; Assessing Pavement Condition for the National Highway Performance Program and Bridge Condition for the National Highway Performance Program,” Notice of Proposed Rulemaking. January 2, 2017
LTPP InfoPave 2017 release is now online. Please see Release Notes for information on new and enhanced features included in this release. For more information, please contact LTPP Customer Support Center at ltppinfo@dot.gov. November 10, 2016
The Transportation & Development Institute (T&DI) of the American Society of Civil Engineers (ASCE) and the Federal Highway Administration (FHWA) are pleased to announce the following winners of the 2015-2016 T&DI/ASCE-LTPP International Data Analysis Contest:
Michael D. Elwardany, Kangjin Lee, Jung Hwa Lee, and Coleman Brown from North Carolina State University for their paper entitled, “Proposed Performance Prediction Equations and Threshold Triggers for Thin-Overlay Treatment Using LTPP Database.”
Giannin Viecili from University of Toronto for her paper entitled, “Investigation of Rutting & IRI as Pavement Condition Indicators as Per Ministry of Transportation Ontario Guidelines.”
The award presentation for the winning papers will take place on Sunday, January 8, 2017 at the LTPP State Coordinators’ Meeting. The challenge paper will be presented at the LTPP Technical Session on Monday morning.
Again, congratulations to this year’s winners!
November 10, 2016
As you prepare for the upcoming TRB Annual Meeting in January, we invite you to include the LTPP State Coordinators’ Meeting and LTPP Technical Session in your schedule. July 22, 2016
The report discusses a sensitivity analysis of MEPDG pavement performance models to NALS. Significant differences found in the MEPDG outcomes support the need for axle loading characterization beyond a simple default value for heavy trucks that dominate vehicle class distributions, especially for class 9 trucks. July 11, 2016
LTPP Standard Data Release 30 (SDR 30) release is now online. This version of SDR contains some of the notable updates, additions, deletions, and changes made to the data since the April, 2015 Data Release. Other than the data updates, this release also contains new features including LTPPBind Online, LTPP Climate Tool, and ERD File Builder. Detailed information on these updates and new features available in this release is available in the Release Notes. April 25, 2016
Attention: ASCE and T&DI’s Highway Pavement Committee Members and Friends April 22, 2016
The Long-Term Pavement Performance (LTPP) team is pleased to announce the availability of LTPP Climate Tool and LTPPBind Online Beta release. A summary of features available for beta testing is provided in the attached memorandum. Please review this memorandum to plan your beta testing activity. The Beta release can be accessed at http://www.infopave.com. Please use Google Chrome as your primary browser for Beta testing. Certification of other desktop browsers is in progress. April 14, 2016
The International Data Analysis Contest is a joint effort of the Federal Highway Administration’s Long-Term Pavement Performance (LTPP) program 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, and thereby contribute to a better understanding of pavement performance. March 9, 2016
On February 16, FHWA and the LTPP Western Regional Support Contractor (WRSC) visited with Arizona Department of Transportation (ADOT) to discuss recent happenings within LTPP, LTPP products and tools, future monitoring of LTPP test sections, status of SPS-10 construction, and the potential SPS-11 and SPS-12 pavement preservation experiments. ADOT has been a strong supporter of LTPP and the turnout and participation were excellent. February 2, 2016
This report summarizes all activities completed to backcalculate the elastic layered modulus from deflection basins measured on all test sections included in the LTPP program. January 4, 2016
LTPP InfoPave 2016 release is now online. Please see Release Notes for information on new and enhanced features included in this release. For more information, please contact LTPP Customer Support Center at ltppinfo@dot.gov. November 24, 2015
The International Data Analysis Contest is a joint effort of the Federal Highway Administration’s Long-Term Pavement Performance (LTPP) program 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, and thereby contribute to a better understanding of pavement performance. October 20, 2015
The Federal Highway Administration’s (FHWA) Long Term Pavement Performance (LTPP) program, visited the following Universities and State Department of Transportations during the first half of the 2015 calendar year to give a history and overview of the LTPP program, to refresh those familiar with the program or introduce those unfamiliar.
Guest were presented with a brief summary of the benefits of the LTPP program to the pavement industry, and given an introduction to the LTPP InfoPave website. Attendees learned about the academic uses of LTPP data and tools, and were provided sample applications and case studies. An overview of the ASCE / LTPP International Data Analysis Contest was discussed as well. The LTPP team also discussed current and future activities at the LTPP program – including an update on the programs newest pavement experiment, the Warm Mix Asphalt experiment. For more information, contact Jack Springer at 202–493–3144 or Jack.Springer@dot.gov. October 16, 2015
This TechBrief provides an overview of the methodology and procedures used to backcalculate the elastic layer modulus from deflection basins for all test sections included in the Long-Term Pavement Performance (LTPP) database. October 16, 2015
This TechBrief describes the development of an assessment tool to characterize the propensity of highway sections to generate splash and spray during rainfall and the impact of splash and spray on road users. October 9, 2015
Thanks to excellent support from the Oregon Department of Transportation and Kerr Contractors, FHWA is pleased to announce that construction of the newest SPS-10 project on US 97 near Grass Valley, Oregon, has been successfully completed. Five test sections in total were constructed to compare the performance of conventional hot mix asphalt to warm mix asphalt. Oregon DOT also took this opportunity to construct two supplemental test sections studying foaming produced at hot mix temperatures and 30% RAP, respectively.
September 15, 2015
The FHWA LTPP Team held their bi-annual Team Meeting in Buffalo, New York on Tuesday September 15th and Wednesday September 16th. August 6, 2015
This report documents the development of the Long-Term Pavement Performance (LTPP) automated faulting measurement (AFM) algorithm to identify transverse joint locations on jointed plain concrete pavements and compute faulting at certain locations using the profile data collected by LTPP high-speed inertial profilers. For more information, please visit the FHWA web site. August 6, 2015
Back by popular demand, LTPP is pleased to announce the LTPP Newsletter January - June 2015 edition. July 29, 2015
Thanks to excellent support from the Washington State Department of Transportation (WSDOT) and Poe Asphalt Paving, Inc., FHWA is pleased to announce that construction of two co-located SPS-10 projects near Spokane, Washington, has been successfully completed. Six test sections in total were constructed, utilizing night testing to reduce impacts on the traveling public, to compare the performance of conventional hot mix asphalt to warm mix asphalt. WSDOT also took this opportunity to construct two supplemental test sections studying lower gyratory compaction levels and a different binder grade. June 22, 2015
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. May 15, 2015
The Long-Term Pavement Performance (LTPP) InfoPaveTM team has prepared a presentation titled “LTPP InfoPaveTM: Extracting Information out of LTPP Data” for the 9th International Conference on Managing Pavement Assets, May 18 to 22, 2015 at Westin Hotel in Alexandria, Virginia. Mr. Nima Kargah-Ostadi, PhD will be presenting this paper (number 257) in session number 18, “Performance Monitoring, Reporting, and Visualization,” on the afternoon of Wednesday May 20th in room Edison EFG. This presentation will cover the following topics:
May 8, 2015
The Long-Term Pavement Performance (LTPP) team at Turner Fairbanks Highway Research Center (TFHRC) is one of several FHWA research units working to improve our nation’s infrastructure. The Secretary of Transportation highlighted LTPP efforts in the following link. May 8, 2015
Are you aware that C-SHRP data can be found under the Non-LTPP tab along with numerous related reports? C-SHRP is the Canadian Strategic Highway Research Program. The Transportation Association of Canada recently notified all Canadian agencies/academia’s of the C-SHRP data availability through InfoPave. For more information about C-SHRP please see the attached document or contact Luay Mustafa via email mustafa@tac-atc.ca April 30, 2015
Since the official recruitment of the of the Long-Term Pavement Performance (LTPP) program’s new warm-mix asphalt (WMA) experiment in January 2014, two sites have been constructed. A site in New Mexico was completed in November 2014 and one site in Texas was completed in February 2015. Pavement performance and materials sampling data are being collected at both test sites and these data are being added to the LTPP database. February 9, 2015
TRB Webinar - Wednesday March 11, 2015 1:00 PM - 2:30 PM EDT Released during the 93rd TRB Annual Meeting in January 2014, LTPP InfoPave™ has received positive response from students, researchers, state department of transportation engineers, and stakeholders. The second release of LTPP InfoPave™ (released during the 94th TRB Annual Meeting in January 2015) includes major enhancements to existing features and a series of new features that further facilitate access to LTPP data. The application of LTPP InfoPave™ enhances data visualizing, selection, and access.
Participants must register in advance of the webinar, and there is a fee ($89) for non-TRB Sponsor or non-TRB Sustaining Affiliate employees.
November 19, 2014
" November 18, 2014
" November 14, 2014
" September 15, 2014
The Arizona Pavements/Materials Conference on November 19-20 will include a presentation on the SPS-10 projects planned for construction in 2015 and 2016. These projects compare the performance of warm mix asphalt overlays to the performance of conventional hot mix asphalt overlays. Arizona’s SPS-10 projects will also include supplemental test sections studying the impact of higher recycled asphalt pavement (RAP) percentages. The presentation will be given by Kevin Senn, Project Manager for the LTPP Western Regional Support Contract at 2:00 PM on November 19. July 3, 2014
The interactive Long-term Pavement Performance (LTPP) Data Analysis Strategic Plan provides visual insight into research conducted, underway, and proposed using the LTPP data. This tool provides an organized and easy-to-understand interface to search and explore LTPP research by data analysis objectives and priorities. June 2, 2014
LTPP InfoPave was showcased at the Annual Transportation Data Palooza on June 2-4, 2014 at the United States Department of Transportation (USDOT) and the Geospatial Transportation Mapping Association (GTMA) Annual Meeting and TransData Exposition at Hilton Reagan National Airport, Arlington, VA. March 19, 2014
Every Day Counts News highlights recruitment of warm-mix asphalt projects for LTPP’s new experiment. See March 7 issue for more detail. February 14, 2014
LTPP InfoPave is featured in the FHWA Focus article - LTPP InfoPave Goes Live: Your Portal to Pavement Data
The printable version of Focus is at: January 30, 2014
The International Data Analysis Contest is a joint effort between the Federal Highway Administration (FHWA), the Long-Term Pavement Performance (LTPP) Program, and the Task Committee on the Long-Term Pavement Performance 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. Please visit the ASCE Web site at www.asce.org/tdi to get a full copy of the 2014 Contest Guidelines. We look forward to your participation in this year’s contest. December 19, 2013
LTPP Standard Data Release 28 (SDR 28) released at TRB Annual Meeting, January 2014. This version of the SDR includes enhanced datasets, additional tables to make data easier to use, and an updated Reference Library. The SDR can be downloaded through the LTPP InfoPave web site at infopave.fhwa.dot.gov or via request to ltppinfo@dot.gov. December 18, 2013
FHWA Long-Term Pavement Performance (LTPP) program is proud to announce public release of LTPP InfoPave at the 93rd TRB Annual Meeting in Washington DC. Please plan to attend one or more of the following sessions: November 27, 2013
Please join the Long-Term Pavement Performance (LTPP) Team to learn about the program’s new warm-mix asphalt (WMA) experiment and how highway agencies can nominate potential test sections. The LTPP program created the SPS-10 experiment to study the performance of WMA pavements over the long-term. This webinar will discuss how highway agencies can nominate projects for the SPS-10 experiment. The presentation will include details on the site requirements and nomination process, along with the roles and responsibilities of FHWA and its contractor staff, and the highway agencies. The primary audience for this webinar is the LTPP State Coordinators and research, pavement, and materials engineers in the highway agencies. Date: Thursday, December 5, 2013 Time: 2:00-3:00 p.m. ET Teleconference Number: (877) 336-1828 Access Code: 1391629 Register Now! ** The webinar will be recorded. ** The Login and Password used to register for the meeting are required to join the meeting. September 16, 2013
We invite you to join the Long-Term Pavement Performance (LTPP) Team to beta-test the new state-of-the-art LTPP web interface, LTPP InfoPave. |