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IMS Infrastructure Management Services Arden Hills Report P a g e | 13 4.2 ARDEN HILLS NETWORK CONDITION IMAGERY The images presented below provide a sampling of the Arden Hills streets that fall into the various condition categories with a discussion of potential rehabilitation strategies. Poor (PCI = 25 to 40) – Last Opportunity for Surface Base Rehabilitation Norma Avenue from Dawn Circle to Briarknoll Circle (GISID 1165, PCI = 25) – Rated as Poor, this segment still has some remaining life before it becomes a critical reconstruction need. As evident in the imagery, a fair amount of the segment has been patched, but the patched areas are surrounded with alligator cracking. These areas should be dug out and structurally patched to attain the maximum life from any potential rehabilitation efforts. This street is right on the edge of becoming a complete reconstruction project. If left untreated, within a short period of time, a full reconstruction would be required. On arterial roadways, Poor streets often require partial to full reconstruction – that is removal of the pavement surface and base down to the subgrade and rebuilding from there. On local roadways, they require removal of the pavement surface through grinding or excavation, base repairs, restoration of the curb line and drainage, and then placement of a new surface. In general, the service life of Poor streets is such that if deferred for too long, it would require a more costly reconstruction. Streets rated as Poor are typically selected first for rehabilitation as they provide the greatest cost/benefit to the City – that is the greatest increase in life per rehabilitation dollar spent.