Why Good Streets Go Bad…

• Quality of Construction

  • Subgrade or Soils – Proper Material, Proper Installation (Compaction)
  • Quality of Installation – Contractors aren’t always accountable. Inspection Matters!!
  • Follow-up on Warranty Work – Minimize City costs in long run.

• Time (Age)

  • Oxidation, Brittleness, etc. – Block Cracking, Longitudinal Cracking

• Traffic (Loading)

  • ADT – Average Daily Traffic
  • Truck Traffic is the biggest impact. (1 Truck = 1000 Cars)

• Weather

  • Precipitation (Snow/Rain) – Gets into cracks and compromises the subgrade - Fatigue Cracking
  • Freeze/Thaw Cycles – Causes heave and expands cracks.
  • Temperature Fluctuations – Thermal Cracking or Transverse

Notes: