5.6. SR 06-07-2010 - Laserfiche WebLink

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Feasibility Study 2010 Street Overlay Improvements City of Elk River, MN L PROJECT INTRODUCTION As directed by the City Council of the City of Elk River, we have prepared this report to determine the feasibility of overlaying several streets as identified on Figure No. 1, included in the appendix. This Feasibility Study was initiated by the City Council based on the City's ongoing street maintenance program and commitment to extending the service life of the pavement surfaces. The project has been separated into 4 different project locations. The subdivisions included in the project locations are described as follows (year of plat shown in parentheses): Project Location l: Oak Hills 1"Addition (1969), Knollwood (1973), Knollwood West (1973), Knollwood West 2°`i Addition (1973), and Wilderness Acres (1985) Project Location 2: Elk Hills Addition (1965), Barrington Place (1980), and Deerfield 3``~ Addition (1986) Project Location 3: Industrial Park (1972), Industrial Park 2°`' Addition (1987) Project Location 4: Meadowvale Woods (1986), Meadowvale Woods 2°`t Addition (1986) This feasibility study will summarize the existing conditions, proposed improvements, estimated construction costs, and associated overhead costs for the project. Overhead costs include City administration, engineering, fiscal, and legal expenses. The City's Assessment Manual and approach to previous overlay projects have been used as a guide to establish financing methods for the project. IL EXISTING CONDITIONS Project Locations 1, 2 and 4 are residential subdivisions. The streets are bituminous paved rural roadways with ditches and isolated areas of bituminous curb to handle the storm water runoff. Pavement thicknesses are not exactly known, but are assumed to be three to four inches of bituminous pavement on four to six inches of aggregate base. Street widths vary in width from 22 feet to 36 feet, depending on the neighborhood. Some streets in Project Location 1 are believed to have been overlaid in 1988. In these Project Locations there is no sanitary sewer or watermain. The pavement on these residential streets is generally in fair condition with isolated alligatar cracking in few areas. An overlay of these segments would improve pavement structure and extend the life of the street before reconstruction is required. Project Location 3 is the Industrial Park. Streets are in genera136 feet wide bituminous paved streets with existing concrete curb and gutter on the west and south sides of the Industrial Boulevard NW loop. The east side of the loop along with 192°`~ Court has no curb and gutter. Triangle Road NW is 31 feet wide with no curb and gutter. Bolton & Monk, bic. 2010. All Ki~lltc Raceri~ed 816.102234 Pagel June 3, 2010