A Qualitative and Quantitative Assessment of Pavement Segments that have Remained in Poor Condition for 5+ Years

Principal Investigator(s):

Mihai Marasteanu, Professor, Civil, Environmental and Geo-Engineering

Project summary:

The 2014 Transportation Asset Management Plan calls for developing a method to annually track, monitor, and identify road segments that have been in poor condition for more than five years and consistently consider them when programming. In Minnesota, pavements are considered in poor condition when the Ride Quality Index (RQI) is less than or equal to 2.0. MnDOT has used the remaining service life (RSL) measure for pavement condition for more than a decade. RSL is an estimation of the time until the next major rehabilitation of the pavement section. Using pavement deterioration curves, the time when a pavement section reaches an RQI of 2.5 is predicted and the RSL is simply calculated as the difference between the predicted and the present time. However, it is not clear if RQI and RSL metrics accurately quantify the "true" condition of the system. There are still pavement segments that have remained in poor condition for more than 5 years.Therefore, there is a critical need to systematically identify and assess roadway segments that have maintained a poor ride quality index over time. The objective of this study is to obtain additional information, which are not directly reflected in RQI, for these pavement segments. The information will include traffic volume, posted speed limits, public complaints generated, excessive reactive maintenance costs incurred, and others to determine if there are more appropriate metrics for programming future work.

Project details:

  • Project number: 2020013
  • Start date: 07/2019
  • Project status: Completed
  • Research area: Infrastructure
  • Topics: Asphalt, Concrete, Maintenance