USA Banner

Official US Government Icon

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure Site Icon

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

U.S. Department of Transportation U.S. Department of Transportation Icon United States Department of Transportation United States Department of Transportation

Online Software Downloads

List of FHWA Research Software Downloads

Download Name Download Number Date Research Area Keywords

Congestion and Bottleneck Identification (CBI) Tool Software Download
Version 1.2 January 2019 Research, Operations, Congestion Research, Operations, Traffic, Bottleneck
INelastic STRUCTural Analysis of Reinforced-Concrete and Steel Structures (INSTRUCT) Software Version 1.1   Research, Infrastructure, Structures research, infrastructure, structures, bridges, foundations, piles, INelastic STRUCTural Analysis of Reinforced, Concrete and Steel Structures, pushover analysis

Deep Foundation Load Test Database (DFLTD)
Version 2.0 January 2017 Research, Infrastructure, Structures, Bridges, Foundations, Piles research, infrastructure, structures, bridges, foundations, piles
Tim Benefit-Cost (TIM-BC) Tool Version 2.0 November 2015 Research, Operations, Intelligent Transportation Systems, ITS research, safety, user manuals, benefit cost analysis
HIgh PERformance PAVing (HIPERPAV III® Version 3.3 May 2015 Infrastructure, Pavements infrastructure, pavements, construction, concrete software program, curing, concrete, HIgh PERformance PAVing (HIPERPAV)
Capacity Analysis for Planning of Junctions (CAP-X) Tool Version 2.0 June 2014 Operations research, operations, intelligent transportation systems, ITS, Travel behavior, Active Transportation Demand Management (ATDM), Managing Travel Demand (MTD), Integrated Corridor Management (ICM), Active Traffic Management (ATM), User behavior response, software
Interactive Highway Safety Design Model (IHSDM) Software Download Version 17.0.0 September 2021 Infrastructure Design Safety Research, Infrastructure, Design, Safety, Interactive Highway Safety Design Model, IHSDM, software
Long-Term Pavement Performance (LTPP) Program Standard Data Release Release #27 January 2013 Infrastructure, Pavements Research, infrastructure, pavements, Long-Term Pavement Performance Program, LTPP, Standard Data Release #27
Surrogate Safety Assessment Model (SSAM) Software N/A July 2010 Advanced Research Safety Research, safety, intersections, safety, SSAM, software, Surrogate Safety Assessment Model, license agreement