CCP 10-10-2000 - Laserfiche WebLink

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I '- I I I I I I I . I I I I I I I PROPOSED IMPROVEMENTS Proposed Roadwav Improvements All of the streets identified in the Ingerson Road neighborhood for this project with the exception of Fernwood Court are proposed to be fully reconstructed with bituminous surfacing, concrete curb and gutler or concrele edge bands (as appropriate) and pavement subdrainage syslems in accordance with currenl flexible pavement design methodology Fernwood Court is proposed to receive concrete curb and gutler or concrete edge bands (as appropriate) and a bituminous leveling course as necessary to provide for drainage however no subbase correction work is proposed for Fernwood Court. Ingerson Road and Hamline A venue (south of Ingerson Road) are MnDOT State Aid designated routes and will be designed to meet or exceed Slate Aid standards. The proposed pavement sections will be designed in accordance with MnDOT guidelines for flexible pavement design ulilizing Ihe soil R values measured from the geotechnical analysis. The geotechnical analysis performed by American Engineering and Testing earlier this year recommends that the use of a granular subbase be incorporated into the design of the proposed roadway pavemenls. The sand subbase will provide enhanced pavement support, pavement subdrainage and frost protection necessary for the soils encountered in this area. The typical pavement cross section will therefor include 4 inches of bituminous surfacing, 8-12 inches of aggregate base and 12 inches of sand subbase. The sand subbase will be drained with 4 inch PVC subdrainage pipes connecled to storm sewer catch basins or other outlets as appropriate. Final pavement sections will be determined as a part of the final design process based upon the soil borings and consequent analysis of in place soils and traffic loads. The proposed improvements include the construction of concrele curb and gutler or concrete edge strips along all sections of roadway. The proposed curb height is 6 inches which matches all other concrete curb construcled by the City to date. The task force recommended the use of 4 inch heights on curbs. The 4 inch height will not provide as much capacity to carry runoff however would function satisfactorily in most rainfall events and provide the type of edge desired for maintenance operations. The City Engineer and Public Works Director would only recommend the use of 4 inch curb if the Council was prepared to make 4 inch height the City standard from this point forward on residential streets. The street reconstruction will include construction of concrete driveway aprons and patching of existing driveways as necessary to meet the new roadway grades. Restoration will include sodding in residential areas and seeding in open space areas or along wetland slope areas. Landscape plantings will be included for rain garden areas and the two ponding areas to enhance the aesthetics of the neighborhood. Hamline Avenue Vacation The proposed improvemenls include the vacation and removal of Hamline Avenue between Ingerson Road and Tiller Lane adjacent to the wetlands, MnDOT ditches and Highway 51. This segment of Hamline A venue between Ingerson Road and Tiller Lane is anticipated to require 3