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� � � I I ;� Table 4- Pavement Condition Ranking � � . i ,� � PCI Pavement Recommended � I � Rating Condition Maintenance � � � 8 -10 Excellent Do Nothing � ,� . 6- 7 Good Seal Coat � ��. 4- 5 Fair Overlay or Reconstruct � � � 1— 3 Paor Reconstruct � � � � It is recommended that a follow-up pavement condition survey be perFormed on one-third of the � � street network on an annual basis. The surveys should be conducted in the spring of each year so � the information can be used to update and confnYn the findings for the current and upcoming � � construction seasons. � � , Prouased Improvements � � � Street ; Various street improvements may be considered when a seal coat application is no longer a cost ;� effective solution. The improvements #o be considered are: � � - • Mill and overlay existing bituminous surface if existing street condition will accept an � overlay. Existing concrete curb and gutters remain in-place. � Reconstn�ct street by removing existing curb and gutter, bituminous surfacing, gravel base, � and subgrade material. Install geotextile fabric, draintile, sand subgrade, aggregate base, bituminous pavements and concrete curb and gutter. � • Reconstruct street by leaving the concrete curb and gutter in-place, then removing and replacing the road material as noted pzeviousiy. � Figure No. 4 presents Typical Street Repairs for each street improvement. It should be noted that ;� sections of existing curbs that are cracked �r settled can be sawcut, removed and replaced when the option to leave curbs in-place is chosen. '� Centerville Pavement Management Study 1 S