CCP 08-21-2000 - Laserfiche WebLink

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. e . . The proposed improvements are a substantial investment into City infrastructure which should have a positi ve effect on the neighborhood property values as well. The City of Eagan had estimated typical residential street improvements to add $3,000.00 to $4,000.00 of value to properties. . Should the reconstructed streets include concrete curbs and gutters? Yes The existing streets do not have concrete curb and gutter however some sections of the streets have deteriorated bituminous curbs while others have "sod" curbs at the edge of the bituminous pavement. Hamline Avenue currently does have an existing rural section with ditches or low areas on both sides of the roadway. The area grades range from very flat to moderately hilly and most front yards slope into the roadway and have trees relatively close to the edge of the road. Staff recommends that concrete barrier (vertical face) curb and gutter be installed throughout the project with the exception of areas that may be selected for rain gardens or the rural section of Hamline A venue. Concrete barrier curbs provide a solid "bookend" to the bituminous pavement, provide for better snow plowing, less potential of cars running over front lawns and increased efficiency of the drainage system. The existing topography of the neighborhood lends itself to curbing and concrete curbing is a great deal more durable than bituminous curbing as is apparent by the dilapidated condition of the exisling bituminous eurbing. In rain garden areas or rural section areas, a 24 inch concrete edge strip (with no vertical curb) is recommended in order to provide the "bookend" for the bituminous pavement and also blend with the concrete curb look throughout the rest of the neighborhood. Street Structure Staff recommends that the streets be removed and reconstructed to current standards including a sand subbase, gravel base and bituminous surface. The sand subbase is desirable in order to provide subdrainage for the integrity of the roadway section. The task force discussed the possibility of overlays or cold-in-place recycling of the pavements without a 2 foot cut. Cold-in- place recycling is significantly cheaper in the short run however the roadway subbase would still be more susceptible to freeze thaw and saturation after rainfall events than the recommended sand subbase section. In addition, overlays and in place recycling don't allow for corrections to low points, humps or other undesirable surface irregularities which would be corrected with a full depth reconstruction. The existing pavement of Femwood Court is in very good condition today (1999 rating of 86) and may not warrant replacement due to the very limited amount of traffic on it. Staff recommends constructing edge strips and/or concrete curbing around Femwood Court and overlaying the surface in lieu of full reconstruction.