Agenda - Council - 07/27/1993 - Laserfiche WebLink

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SCOPE AND INTRODUCTION The purpose of this stud)' is to determine the feasibility and associated costs for providing a bituminous street to serve the segment of 164th Lane N.W. between County Road #5 (Nowthen Blvd. NWv'.) and the western terminus of I64th Lane NW. The project was initiated with the receipt of a petition signed by six (6) of the benefited property owners fronting on 164th Lane. Exhibit A defines 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 fiat and some, but not ali, driveways are served with culverts. There appears to be no significant problems with the existing drainage patterns. PROPOSED IMPROVEMENTS It is proposed to provide 164th Lane 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 (2) 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 backI-~lling slopes against the new road profile which can be anticipated to be raised approximately five (5) 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 164th Lane NW. be paved with a 66 foot diameter cul- de-sac. It is further proposed that the paved right-of-way be installed approximately 50 feet further west than the existing dirt cul-de-sac, as this will allow maintained public roadway into parcals 7 and 8. Although, the dedicated right-of-way extends halfway through parcels 7 and 8, the current dirt cul-de-sac terminates approximately 20 feet east of their eastern property lines. The new cul- de-sac would stop short of causing the removal of the desirable trees located in thge canter of the right-of-way. There will be no significant alterations to the area drainage as a result of this project. However, the Public Works Department will clean 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 extension 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. These additional costs are not included in the cost estimates provided in Table 1. Gravel drives will be restored to match the street grade with Class V.