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Prepared by: Bolton & Menk, Inc. <br />Pavement Management Plan ǀ City of Lake Elmo Page 5 <br />III. PAVEMENT MAINTENANCE AND REHABILITATION METHODS <br />Maintenance costs increase significantly as the pavement ages. The maintenance actions and costs <br />required to keep a roadway in its present condition are much less when the roadway is relatively new and <br />in good condition. Therefore, it is important that the proper maintenance actions be taken at the optimal <br />time to minimize maintenance costs and maximize the useful life of the pavement. <br />Maintenance or Construction Cost Total Project Cost <br />Rehabilitation Method Unit Cost ($/SF) Unit Cost ($/SF) <br />Seal Coating $ 0.24 $ 0.30 <br />Mill and Overlay $ 1.60 $ 2.00 <br />Reclamation – No curb $ 5.20 $ 6.50 <br />Reclamation – New curb $ 8.15 $11.00 <br />Reconstruction $14.80 $20.00 <br /> <br />Pavement maintenance procedures include crack sealing, seal coating, pothole repair and patching. Crack <br />sealing and seal coating are preventative maintenance procedures designed to slow the pavement aging <br />process and are most effectively utilized on newer and less distressed pavements. The procedures are <br />designed to seal the pavement surfaces to protect the pavement from the adverse effects of age, water <br />and to some extent wear from vehicle traffic. Pavement maintenance procedures are paid for with city <br />street maintenance funds and are not assessed. <br />When pavements have extensive cracking and larger areas exhibiting pavement distresses and failures, <br />repairing potholes and conducting pavement patching over these localized areas can be used as an interim <br />stop gap measure prior to major rehabilitation. Following pavement patching, seal coats can also be <br />applied to reseal the repaired surfaces. Pothole repair and patching are required and necessary elements <br />of street maintenance programs, however they are the least cost-effective treatments over the long-term, <br />so the street maintenance program should be designed to limit their use for corrective maintenance or <br />emergency maintenance measures. <br />Pavement rehabilitation consists of procedures used to restore or renew the existing pavement surface <br />and to add additional structural support to the pavement. Rehabilitation procedures include mill and <br />overlays, full depth pavement reclamations, and reconstruction. At this time, mill and overlays are paid <br />through the street maintenance funds and are not assessed. However, all other rehabilitation procedures <br />are assessed to benefitting properties in accordance with the special assessment policy.