Agenda - Council - 06/09/1992 - Laserfiche WebLink

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The purpose of this study is to determine the feasibility and costs associated with the paving of those portions of Waco Street and Waco Drive north of 179th Lane and south of the Bums Township line. The project area lies within the Northeast Quarter of Section 1, Range 25 West, Township 32 North, Anoka County, Minnesota. The project area is illustrated in Exhibit A. EXISTING CONDITIONS Waco Street consists of a rural section with a gravel surface approximately 23 to 31 feet in width, which is generally less than two inches in thickness. Waco Drive west of Waco Street has a sand surface approximately 19 feet in width. The right-of-way width of both streets is 66 feet. The existing drainage on Waco Street appears to be divided approximately 200 feet north of the intersection of Waco Street and Waco Drive. The area north of this point drains to the north into Bums Township which has been paved with a suburban street section. The area to the south of the aforementioned intersection drains to the north ditch line of 179th Lane (County Road #29). The first 200 feet of Waco Drive west of the intersection with Waco Street appear to be quite flat, while the remaining length of Waco Drive has a substantial slope to the north which again drains into a paved section of Bums Township. Approximately 200 feet involving the northerly most sections of both Waco Street and Waco Drive were paved in 1991 in a joint project with Bums Township. None of the paving performed in i991, however, was assessed. PROPOSED IMPROVEMENTS The existing streets are proposed to be graded and shaped to accommodate a 31 foot wide suburban street section with bituminous curb, which is the City's current standard. The street section will consist of a four inch gravel base with a two inch bituminous mat. This street section has been used successfully in other areas of the City having sandy subgrade soils. The suburban section will eliminate the need for ditch sections and thereby minimize the impact to adjacent properties, some of which have brush and small t~ees adjacent to the roadway. The suburban street section will also eliminate the need for culverts at individual driveways. A culvert will be needed to be placed across Waco Street at its intersection with 179th Lane (County Road #29). Following paving, topsoil will be placed behind the curbtine, seeded and mulched. The construction would not include the paving of individual drives beyond the back of the curbline. ESTIMATED COSTS The estimated project costs are presented in Table 1 and are comprised of construction costs as detailed herein and overhead costs. Overhead costs include, but are not limited to, engineering, construction staking, inspection, fiscal, legal, administrative and contingencies. Overhead costs for the project are estimated based upon percentages of construction cost. These percentages are estimated to be as follows: Engineering 10% Staking and Inspection 7% Fiscal and Legal 3% Administration 5% Contingencies 5% I I I I I I I