Development of distress guidelines and condition rating for the evaluation of pavements on highway ramps and interchanges in the province of Ontario

Evaluation of ramps and interchanges has historically been focused on traffic issues, and into some extent on safety problems and deficiencies of structures in interchanges. Pavements in ramps and interchanges, however, tend to deteriorate faster than in the mainline given the high traffic demand and complex manoeuvres. Highway ramps and interchanges comprise approximately five percent of the total Ontario highway system. Given the pavement …