6.13. SR 11-21-2005 - Laserfiche WebLink

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I I I I I I I I I I I I I I I I I I I Urban Street Reconstruction Option In the first option, Dodge Avenue would be reconstructed to a 42-foot width from face of curb to face of curb. A 9-ton pavement design section will be built, meeting City standards, including barrier concrete curb and gutter. As shown in Exhibit 2, the pavement section will consist of 3~ inches of bituminous pavement and 7 inches of aggregate base. This is the same street section built in the 1995 Dodge Avenue reconstruction project north of this project. The design of this section is based on a number of factors, including traffic load and native subgrade soils. Soil borings will be conducted to verify the final street section design. An integral part of the street design is the concrete curb and gutter, which collects runoff and directs it into the existing storm sewer inlets. Concrete curb protects the edge of the road and adjacent boulevard area from erosion. The proposed concrete curb and gutter will be a barrier type curb; similar to curb constructed on the Dodge Avenue previous projects. There are no new storm sewer facilities proposed. Concrete driveway aprons will be constructed as a transition from the street to the parking lots. Each driveway will be reviewed during preparation of plans and specifications to determine the transition required. The driveway aprons taper the gutterline grade to the top of curb grade. Minor changes in grade or elevations may be necessary on some areas to improve storm drainage from the roadway surface. Wherever possible, grade changes will be made to minimize the need for storm sewer extension. Efforts will also be made to minimize the amount of driveway restoration required. All driveways would receive a minimum 3-foot wide concrete driveway apron where the existing driveway approach meets the new concrete curb section. In accordance with City Council direction to constructing pedestrian trails with new street construction, the proposed improvements also includes a sidewalk located on the east side of Dodge Avenue. The sidewalk will be 5 feet to 6 feet wide, and will complete the sidewalk on Dodge Avenue from Elk Hills Drive to 5th Street. Reclaimed Bituminous Option The second option would be to reclaim (grind up) the existing bituminous surface, then provide a new bituminous overlay. After further analyses this option was determined to be not feasible. The reason is that with this approach the elevation of the existing street grade would need to rise 2" - 4", as the existing bituminous is ground up to provide additional base material and then a new bituminous surface is overlaid on the existing base. Given the relatively flat driveways into several of the existing businesses, raising the street grade is not a viable option due to drainage issues it would create. If enough existing base material were removed to allow the overlayment 3