• Published 2015

Im plem entation of Research

  title={Im plem entation of Research},
  author={Robert Betsold},
  • Robert Betsold
IN T R O D U C T IO N In the highway business, change is essential. Across this na tion we have thousands of miles of highways which need m ain tenance and rehab ilita tion , and state and local highway agencies are struggling to find the funds necessary to do the work. T he In tersta te H ighway P ro ­ gram began in 1956. M any of the early in tersta te sections are over 20 years old and m any have carried traffic volumes far beyond their original design life. Design standards have evolved… CONTINUE READING