V. CURRENT PAVEMENT CONDITION ANALYSIS
In order to determine the present state of the County’s roadway infrastructure, staff performed a six-month visual pavement inspection on all County-maintained roads and compared the findings from these inspections to findings from inspections performed in 2005. The pavement condition analysis yielded a number of observations. The County has repaired 43.7 miles of roadway since 2005. The 2010 average pavement age of all County roads is 24 years. 86% of the County’s infrastructure is currently in need of some type of capital repair. This percentage would be higher if not for the recently repaired roads. The overall infrastructure continues to deteriorate from the 2005 condition into the state that will require more expensive repair strategies The 2010 estimated backlog for capital pavement maintenance is $380 million. Despite the recent initiatives to fund capital pavement maintenance, the backlog has increased by 6% since 2005.
In this analysis, pavement condition has been categorized according to the method of repair that was needed at the time of the analysis. Over the last six months, staff has been visually evaluating the surface condition of all 677 miles of County maintained roads for signs of common asphalt pavement surface distress: surface defects (raveling, flushing, polishing); surface deformations (rutting, distortions, settling, heaving); cracks (transverse, reflection, slippage, longitudinal, block, alligator cracks); and patches and potholes. Applying these rating levels to each roadway is the first step. The next step is to determine the reason for the deterioration which can vary from the effects of the environment, to traffic loading conditions, to original construction quality, to interim maintenance procedures. Both the current surface condition and the reason for the deterioration were used to determine the proper method of repair for the roadway. The descriptions that follow illustrate this rating system as applied to Alachua County roads.
JUNE 24, 2010
ALACHUA COUNTY PAVEMENT MANAGEMENT PROGRAM UPDATE REPORT
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