CCP 04-13-1992 - Laserfiche WebLink

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I .. City maintenance forces have spent considerable time, effort and expense in repairing the existing I surface. Additional bituminous surfacing has been placed to fill potholes along substantial portions I of the roadway. Unfortunately, maintenance funds spent on the roadway in its present condition will not offset the costs necessary to repair or reconstruct the roadway. I Soil borings were taken by an independent testing fIrm to determine the nature and suitability of I the soils beneath the pavement surface and the thickness of the existing pavement surface. The I base materials were found to predominantly sand and fill material suitable for use beneath a bituminous surface. It is concluded from the soils report that the subgrade material is not a I primary reason the pavement is deteriorating. Subcutting of this fill material does not appear to be needed. Improvements in draining the sand and fill material of excessive moisture are I recommended, since freeze and thaw cycles combined with heavy truck traffIc cause potholes. , The seven soil borings taken on the roadway, as shown by Exhibit 3, determined that the existing pavement thickness varied from 2.5 inches to 5.75 inches thick. I PROPOSED IMPROVEMENTS I As discussed, we have met on several occasions with Public Works Superintendent Dan Winkel to I review the area and determine options available to improve the roadway. The roadway is clearly in a failed condition such that a simply overlay of the present roadway is not feasible. The three I options available to the City to improve the roadway are: 1. Reconstruct entire roadway I 2. Cut and patch distressed areas of the roadway then overlay the entire surface. I 3. Recycle existing bituminous pavement and overlay the entire surface. 4 I -----.-.--