06 - Laserfiche WebLink

BACKGROUND On June 17, 2008, the City Council awarded a construction contract to Gordon N. Ball, Inc., in the amount of $3,917,374. The subject project has since been completed and is ready for acceptance. The City's Capital Improvement Program (CIP) has included four projects related to improvement of Bernal Avenue and Vineyard Avenue traffic movements. Included is the construction of the Bernal Bridge (CIP No. 995067), the widening of Bernal Avenue from Vineyard Avenue to Arroyo Del Valle (CIP No. 005029), the installation of a new traffic signal at the Bernal Avenue and Vineyard Avenue intersection (CIP No. 025018), and the partial construction of the Vineyard Avenue /Arroyo del Valle Sewer Addition, Phase I (CIP No. 902028). These four CIP projects were combined into the current project as a way of improving project and construction efficiencies. This project included: . Construction of a new bridge and widening the roadway between Vineyard Avenue and Nevada Court. A bridge of approximately 284 feet long by 44 feet wide crossing the Arroyo Del Valle was constructed utilizing a pre -cast concrete slab supported by steel piles and spread footings. Approximately 12,500 square feet of roadway pavement on both side of the bridge was added to allow two lanes of vehicular traffic plus a bike lane in each direction. As part of this project, 85,000 square feet of pavement was resurfaced on Bernal Avenue between Nevada Court and Tawny Drive. Open - graded asphalt concrete was employed to reduce traffic noise and enhance skid resistance and drainage. . Creation of wetland and riparian mitigation sites in the Arroyo Del Valle and on the Bernal Property. Approximately 1.08 acres of wetland and other water habitat was created at the Mission Creek site located on the southeast corner of Valley Avenue and Laguna Creek Lane intersection to compensate for 0.23 acre impacted by the new bridge construction. Approximately 1.60 acres of riparian habitat was also created to compensate for 1.0 acre impacted by the shading effects of the newly constructed Bernal Bridge. The 0.85 acre of excess created wetland and 0.60 acre of excess riparian habitat can be earmarked for future City of Pleasanton project(s) where wetland and riparian mitigation is required. . Installation of approximately 900 linear feet of sanitary sewer and its appurtenant structures between Vineyard Avenue and Nevada Court. A portion of this sewer line spans the Arroyo and has been attached to the east side of the existing bridge. A summary of other project related work completed to -date includes the following: . Purchase of the property and demolition of structure at 3421 Vineyard Avenue (Caroline property) to accommodate the bridge and roadway widening. Page 2 of 4