11 - Laserfiche WebLink

BACKGROUND On July 18, 2023, the City Council awarded the construction contract to the lowest responsible bidder, QA Constructors, Inc., in the amount of $515,930 and authorized the then Director of Engineering to approve change orders up to the project contingency amount of$51,600 (approximately 10 percent of the contract). The project was funded in the Fiscal Year 2023/24 CIP program. The City typically has two annual projects designed to maintain roadway infrastructure: the Annual Street Resurfacing and Preventative Maintenance Project, and the Annual Slurry Seal of Various City Streets Project. The first project resurfaces various roadways by overlaying the existing pavement with a new layer of asphalt concrete, while the second project slurry seals a different set of roadways. The resurfacing project is considered a street rehabilitation project, while the slurry project is a preventative maintenance project. Together, these projects are designed to maintain the condition of the City's roadway pavement. Due to unsuccessful bidding, the 2023 Annual Street Resurfacing and Preventative Maintenance Project was postponed until next year. The Annual Slurry of Various City Streets is scheduled to be completed by early October 2023. The Annual Slurry Seal on Various Streets Project requires preparatory works such as pavement repair and crack sealing prior to the placement of the slurry sealant. This necessary preparatory work is generally included under the Annual Street Resurfacing and Preventative Maintenance Project. Due to the postponement of the Annual Street Resurfacing and Preventative Maintenance Project, the 2023 Streets Preventative Maintenance Project was created to complete the necessary preparatory work for the slurry seal project. The Bernal Avenue bridge over the Arroyo Del Valle was constructed in 2009 and did not include an approach guardrail. The guardrail in the southeast quadrant was identified as a necessary safety improvement to protect the bridge, redirect vehicles away from the pedestrian path, and keep vehicles from leaving the roadway. Due to the need for safety improvement to the bridge approach, cost savings, and to attract bidders, a guardrail for the approach to the Bernal Avenue bridge over the Arroyo Del Valle was included in this project. On July 18, 2023, the City Council authorized the transfer of$74,290 from the Bernal Bridge Abutment, CIP No. 23569, to the 2023 Street Preventative Maintenance Project, CIP No. 23570, to complete the guardrail installation. DISCUSSION Under this project, approximately 1.35 million square feet of roadway was prepared for slurry sealing, and approximately 36,000 square feet of poor roadway pavement areas were removed and replaced with new asphalt concrete pavement. Over 14,000 pounds of crack sealant were placed over roadway cracks to prevent water and other substances from entering the pavement. To provide smooth riding for vehicular traffic, 76 tons of asphalt concrete was placed over the uneven pavement surface as a leveling course prior to the slurry placement. Page 2 of 3