Highway Infrastructure:

FHWA's Model for Estimating Highway Needs Has Been Modified for State-Level Planning

GAO-01-299: Published: Feb 14, 2001. Publicly Released: Feb 14, 2001.

Additional Materials:


Phyllis F. Scheinberg
(202) 512-9696


Office of Public Affairs
(202) 512-4800

The Federal Highway Administration (FHWA) developed the state-level version of the Highway Economic Requirements System (HERS-ST) model as an investment-analysis tool for highway planning at the state level. FHWA officials believe that some state departments of transportation will find the analysis that the HERS-ST model produces useful because it demonstrates the potential results of highway investment decisions from an economic point of view. FHWA is conducting a pilot project for its prototype HERS-ST model with states that volunteered to test the model. FHWA distributed to these states HERS-ST software, technical manuals, and sets of state highway data with which to run the model. FHWA then provided an overall orientation and technical training and addressed states' questions during a workshop. Officials from a sample of the states planning to participate reported that they are primarily interested in taking advantage of the model's use of benefit-cost analysis to assess alternative highway improvements. If the pilot project shows that states view the HERS-ST model as a useful tool, FHWA expects to upgrade the model for future users. In doing so, it would consider both enhancements that have already been planned for the national-level HESR model and changes targeted specifically to HERS-ST. Changes to improve the HESR-ST model's usefulness to states include converting the model to a menu-driven system to improve its ease of use or revising the model's data input format so that it matches FHWA's current state highway data reporting requirements.

Oct 29, 2020

Sep 30, 2020

Sep 8, 2020

Sep 2, 2020

Aug 20, 2020

Aug 18, 2020

Aug 10, 2020

Jul 27, 2020

Looking for more? Browse all our products here