Agenda - Council - 06/22/1993 - Laserfiche WebLink

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SCO[~E AND INTRODUCTION The purpose 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. While the current petition for surfacing does not include 152nd Avenue N.W., it is not economically feasible to entertain the notion of surfacing this portion of the project at a latter date when only two (2) parcels would be available to absorb the cost. EXISTING CONDITIONS The present streets consist of a rural section with a gravel and sand surface approximately 21-26 feet in width and surface drainage along both sides. pROPOSED IMPROVEMENTS It is proposed to provide a 24 foot wide bituminous roadway and a 33 foot cul-de-sac with a four (4) foot gravel shoulder and a two (2) foot deep drainage ditch on each side. This will eliminate the need for obtaining a drainage easement which would be required if the drainage were to be concentrated by curbline and discharged at specific locations. Following paving of the roadway the disturbed areas will be restored with a minimum of four (4) inches of topsoil and be fertilized, seeded and mulched. ESTIMATED PROJECT COSTS A detailed estimate of construction costs are presented in Table 1. tn addition to the construction costs, overhead costs include engineering, construction staking and inspection, legal, administration, interest during construction, and contingencies. The overhead costs for the project are est/mated based upon percentages of construction cost. Those percentages are estimated to be as follows: Engineering Staking and Inspection Bonding and Legal City Staff Administration Contingencies 10% 7% 3% 5% 5% .Improvement Bituminous Paving Class V Base Shaping and Grading Culverts Tuff Restoration Construction Cost Total Overhead @ 30% Total Project Cost TABLE 1 PROJECT #93-11 ESTIMATED PROJECT COST Ouanti _ty Cost 493 tons $25 ton 1,150 tons $6 ton Lump Sum $4,500 1 $300 ea. 1.12 ac. $1,5oo/acre Total Pr.. oject. Co..st $12,325 $6,900 $4,500 $3OO $1,693 $25,718 $7,716 $33~434 59-