Volume 1 addresses how to apply a methodology for estimating the life expectancies of major types of highway system assets. The methodology is designed for use

TRB’s National Cooperative Highway Research Program (NCHRP) Report 713: Estimating Life Expectancies of Highway Assets, Volume 2: Final Report describes the t

Aims to encourage transportation agencies to address strategic questions as they confront the task of managing the surface transportation system. Drawn form bot

The purpose of this manual is to provide clear and helpful information for maintaining gravel roads. Very little technical help is available to small agencies t