Agenda - Council - 07/25/2023 - Laserfiche WebLink

Home

includes matching into the existing grades at the edge of pavement, and avoids driveway replacements, and causes minimal disturbance to the boulevards. These improvements are anticipated to have a serviceable life of 60-years assuming pro -active maintenance treatments are completed throughout the life of the improvements. Drainage Improvements The project proposes to replace the existing street crossing culverts with new concrete culverts. Generally matching the same grade and locations. During project design, Staff noted that several driveways within the subdivision do not have culverts. In essence the ditch in-between, these driveways do not have an outlet. Staff estimates approximately 4,650 lineal feet of ditches, would require re -grading, as well as installation of 31 driveway culverts. Staff estimates it would cost approximately $200,000 to re -grade the drainage ditches along the roadway, which currently don't outlet. Because of the fast draining soils found in the project area, Staff believes stormwater runoff infiltrates within the ditches before overtopping driveways. Additionally, Staff is not aware of resident complaints in relation to drainage of the roadway ditches within the subdivision. Staff is recommending to not include additional drainage ditch improvements as part of this project, since it appears the water infiltrates before causing hazards for the residents. If it were determined a drainage improvement is necessary, it could be performed as a stand-alone project. Because the ditch work is generally different from the scope of the roadway project, additional project savings by combining improvements would be minimal. An exhibit is attached showing the drainage concern areas. Preliminary Schedule Remaining • Council awards contract to the lowest responsible bidder o July 25, 2023 • Contractor begins construction o August 2023 • Contractor substantially completes construction o September 29, 2023 • Contractor final completion (verify final restoration, punch list created) o October 13, 2023 Final plans are not attached to this case to prevent potential bidders from downloading plans attached to the case to prepare and submit their bids, rather than purchasing the plans through QuestCDN, the electronic bidding software used by the City of Ramsey. This ensures all bidders are bidding off the same set of plans, and all bidders are notified of any plan revisions (addenda) issued during the bidding process. Attached is the title sheet showing the scope of the improvements, as well as a plan sheet showing the typical section, which includes information on the proposed pavement section. Plans are available upon request for the City Engineer. Notification: If Council accepts the bids and awards a contract for construction of the improvements, letters will be mailed to property owners with updates on the project status. Engineering Staff maintains City Improvement webpages with the most current project information, this can be found on the City website, Engineering department page. Time Frame/Observations/Alternatives: Alternatives: Alternative #1 — Motion to adopt Resolution #23-170 accepting bids and awarding contract for Whispering Pines Estates Plat 3 Street Reconstructions, Improvement Project #23-10. Alternative #2 — Motion of other. Funding Source: