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Pavement Management Program Page 2 SDecial Cases: Definition: Streets which do not fit into any of the three above descriptions and have a very low usage, (1-3 residences), streets which provide secondary access (ie alleys) or streets defined by extreme limitations due to narrow ROW, topography etc. (0.3 miles throughout City) Recommended Street Width: Case Specific . Additional Considerations for Street Width Determination Arden Hills is a community with a wide variety of neighborhoods, each with special conditions which must be taken into account when considering reconstruction of streets. The residential and neighborhood street widths listed above are desired goals but exceptions to these widths will be considered by the City Council on a case by case basis. A number of factors in addition to street classification will be considered including: Topographical constraints (steep hills, lakes, etc.) Existing street widths Existing average daily traffic volumes Existing right-of-way width Existing trees Pedestrian use ofthe road All new street construction in Arden Hills will include concrete curb and gutter for a number of reasons: . Provide a stable maintenance edge for plowing and sweeping operations Reduce plow damage to yards and mailboxes Protect the edge ofthe bituminous surface from deteriorating Channel storm water runoff away from street Reduce erosion from boulevards/lawns All new street construction in Arden Hills will be structurally designed for 9 ton loading thereby eliminating the need for spring load restrictions (allowing year round access) and slowing the rate of deterioration of the pavement system. How Streets are Selected for Reconstruction or Overlav Work The City Council select streets for reconstruction based on a variety of factors starting with the Pavement Condition Index (PCI) of the pavement. The City Engineer conducts a field survey of streets about once every 2 years at which time a PCI rating is calculated for each street in the City. The PCI is a numeric reflection of the surface characteristics of the pavement including potholes, cracking, rutting, etc. Several other factors which will be considered in order to determine the best candidates for street reconstruction are, but not limited to, the following: Condition/effectiveness of existing surface drainage system Condition of underground water and sewer system Whether a street meets recommended standards for curb and gutter and width .