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WSB Pavement Management Report Page 11 EXECUTIVE SUMMARY This report summarizes the findings for the pavement inspection of the road segments performed by WSB & Associates in the city of Lino Lakes completed in October 2017. This report gives an overview of the road condition in the city and provides recommendations on pavement management. Per the City plan, pavement conditions for one-fourth of the City roadways are rated annually. Roadways not rated in the current year are then projected using the PAVER software. The projections are based on past inspection ratings and decreased based on a deterioration curve. Recent roadway improvement projects were updated in the condition ratings. Private roadways and gravel roadways were not evaluated. A summary of the pavement condition findings are as follows: • WSB's GIS system states that there are currently 97 miles of bituminous roadways in Lino Lakes, which 22 miles were inspected in 2017. • The current weighted average Pavement Condition Index (PCI) for bituminous roads in Lino Lakes is 71.32. The PCI is based on a 0 to 100 scale, with increasing PCI as better condition roadways. This weighted average is taken from the PCI values generated on each segment based on the distresses identified in the field, and averaged depending on the area of each segment. Any type of road maintenance (i.e. patching or crack sealing) done prior to inspections would be accounted for in each PCI value. • Percentage of bituminous roadways in respective category, in terms of area, are as follows: o "Adequate" category requiring preventative maintenance — 62.8% o "Marginal" category requiring preservation — 22.8% o "Problem" category requiring reconstruction — 14.4% • There are 3.99 miles of gravel roadways and 3.67 miles of private roadways within Lino Lakes, which are not included in the pavement management. A majority of the roadways within the City are currently in adequate condition. The City has been adding new roadways constructed with development, and has also completed roadway maintenance/reconstruction on existing roadways. In modeling the pavement condition over 20 years, it was found that the marginal category roadways drop into problem category roadways if not preserved within a certain time frame. A budget driven model and a target PCI model were analyzed to determine the level of funding needed to cost effectively maintain the roadways. An analysis of the preservation budget showed an 8 to 10 percent per year increase matched the maintenance needs. It was also concluded that if funding is available in the near future, the City should consider a larger preservation project to keep marginal roadways from becoming problem roadways.