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CCP 11-10-2003
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CCP 11-10-2003
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<br />I <br />.. <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />- <br />I <br />I <br />I <br />I <br />I <br /> <br />I <br /> <br />.. <br />I <br /> <br />I <br /> <br />B. Proposed Roadway Improvements <br /> <br />Overview <br /> <br />Pavement Section <br />Discussion <br /> <br />The following streets are proposed to be fully reconstructed with bituminous <br />surfacing, concrete curb and gutter, aggregate base, sand subbase with <br />draintile. (concrete alleys without curbs are proposed for the narrowest <br />street sections) Proposed street widths are as measured between face of new <br />curbs or edge of concrete for the proposed alley sections. The southern <br />segment of Shoreline Lane (near County Road D) is the only street which <br />falls neatly into the City's standard street widths. The remainder of the <br />streets are special cases and have been designed to fit within the existing <br />physical topography and right of way constraints. <br /> <br />Edgewater Avenue (24 foot width) <br />Edgewater Avenue (west end) (20 foot width) <br />Edgewater Avenue (north south segment) (16 foot alley) <br />Lake Lane (north of Edgewater) (16 foot alley) <br />Lake Lane (south of Edgewater) (24 foot width) <br />Shoreline Lane (north of Edgewater) (16 foot alley) <br />Shoreline Lane (south of Edgewater) (24 foot width) <br />Shoreline Lane &County Road D (28 foot width) <br />County Road D (28 foot width) <br /> <br />The proposed roadway improvements are illustrated in exhibits 2, 4,6, & 7. <br /> <br />The proposed street pavement sections will be designed in accordance with <br />MnDOT guidelines for flexible pavement design utilizing the soil R values <br />measured from the geotechnical analysis accomplished as a part of the final <br />design process. City standards include a 12 inch sand subbase. The sand <br />subbase will provide enhanced pavement support, pavement subdrainage <br />and frost protection necessary for the soils encountered in this area. The <br />typical pavement cross section will include 4 inches of bituminous <br />surfacing, 8-12 inches of Class 5 aggregate base and 12 inches of sand <br />subbase. The sand subbase will be drained with 4 inch diameter PVC <br />perforated pipes connected to storm sewer catch basins. Final pavement <br />sections will be determined as a part of the final design process based upon <br />the soil borings and analysis of in place soils and traffic loads. <br /> <br />The sand subbase will add value to the pavement section through increased <br />strength and frost resistance. Pavement consistency within an area is <br />generally a desirable design attribute since different sections will react <br />differently to weather and traffic thus typically creating a "speed bump" or <br />depression at the location of interface. The cost of the sand subbase is <br />approximately $20.00 per linear foot of roadway. <br /> <br />4 <br />
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