Agenda - Council - 07/13/1993 - Laserfiche WebLink

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~(;OPE AND INTRODUCTION '~ ;~,: (;urpose of this study is to determine the feasibility and associated costs for providing a bituminous street to serve the segment of Hedgehog Street N.W. between 153rd Avenue N.W. and 151st Lane N.W. and 152nd Avenue N.W. from Hedgehog Street N.W. to the easterly plat line of Whispering Pines Plat Two. The project was initiated with the receipt of a petition signed by seven property owners fronting on Hedgehog Street N.W. While this petition did not include the paving of 152nd Avenue N.W., it is recommended by Staff that the project include this segment since paving it at a later date as a separate project would result in a significantly higher cost for the two parcels on 152nd Avenue N.W. Exhibit A presents the project area and identifies the benefitted properties which would be assessed as a result of the project. EXISTING CONDITIONS The present streets consist of a rural section with a sand surface approximately 21-26 feet in width and shallow ditches existing on both sides of the roadway. The topography is generally flat and some, but not all, driveways are served with culverts. There are no significant problems with the existing drainage patterns. pI1OPOSED IMPROVEMENTS It is proposed to provide Hedgehog Street N.W. and 152nd Avenue N.W. with a 24 foot wide bituminous surface consisting of two inches of bituminous wear course placed on top of a four inch Class V base course. A two foot wide Class V shoulder will be constructed adjacent to the bituminous pavement. The roadway will receive only minor grading to assure a consistent transverse profile across the width of the roadway. Material from the roadway will be stockpiled in windrows along the sides of the road to be used for backfilling slopes against the new road profile which can be anticipated to be raised approximately five inches. This stockpile material will be fertilized, seeded and' mulched to restore turf to the roads edge. If higher quality lawn is desired, it will be the property owner's responsibility to add topsoil and seed or sod. It is proposed that the existing dead-end on 152nd Avenue N.W. be paved with a "hammerhead" type terminus to facilitate snow plowing without having to back up .the distance of 152nd Avenue N.W. It is felt that this terminus treatment will be less intrusive to the existing properties and is justified because of extremely low volumes of traffic on the street. There will be no significant alternatives to the drainage patterns as a result of this project other than cleaning of selected culverts and ditches which have filled over the years as a result of roadway grading. Bituminous driveways will be extended to match with the paved roadway. If the area of the drive · :~xtension exceeds 200 square feet beyond the edge of the street, the property owner will be charged for the cost of additional bituminous necessary for the match. Gravel drives will be matched to the street grade with Class V.