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4 Pavement Condition Report Table II. Breakdown of pavement conditions in the City of Lino Lakes. PCI Category PCI Range Mileage Percent of Roadway Network Adequate 70.01 – 100.00 65 65.0 Marginal 40.01 – 70.00 20 20.3 Problem 0 – 40.00 15 14.6 Pavements that fall into the adequate category are recommended to have routine maintenance and preventive maintenance performed. Routine maintenance includes crack sealing, which is recommended to be conducted as soon as cracks surface in order to reduce the infiltration of water and incompressible materials through the cracks. Preventive maintenance includes surface treatment such as fog sealing, slurry seal, and micro-surfacing. The lower the PCI, the less effective a preventive maintenance activity in preserving the life of the roadways. Each type of preventive maintenance serves its own function, and project selection depends on the type and severity of distresses observed on the surface of the road. Streets that fall into the lower range of the adequate category, with PCI in low the 70s, may be prompted to perform a more robust maintenance such as a mill and overlay in order to get a longer life and be more cost effective. It is recommended to evaluate the road condition prior to project selection to determine the appropriate maintenance for the roadways. Pavement preservation is recommended to be conducted on roadways that fall into the marginal category. Some of the pavement preservation methods are overlay, and partial and full depth mill and overlay. Roadways that fall into the lower range of the marginal category, with PCI in the 40s, may be monitored with minimal or no maintenance activities since they have degraded to the point that pavement preservation methods are no longer effective, and the roadways still have residual life before a reconstruction is needed. Prior to any partial depth mill and overlay or full depth bituminous removal and replacement, pavement coring is strongly recommended to determine if the bituminous lifts are bonded well and if the bituminous condition is sound for the construction operations. If there are issues in the base and subgrade layers, pavement preservation methods are not feasible, and those roadways would fall into the problem category in which a full depth reclamation or reconstruction should be considered. Full depth reclamation (FDR) or reconstruction is recommended to be performed on streets that fall into the problem category. An FDR is more favorable if there is enough gravel underneath the bituminous layer. Thus, pavement coring would