Agenda - Council - 04/13/2021 - Laserfiche WebLink

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10-ton pavement design strength meeting MnDOT State Aid design standards. To achieve a 10-ton pavement design strength, the total pavement section depth, which includes the bituminous pavement and underlying aggregate base, must be increased from the City's standard 5-ton pavement design of 7.5-inches (3.5-inches bituminous pavement plus 4-inches aggregate base) to 10-inches (4-inches bituminous pavement plus 6-inches aggregate base). However, since buried topsoil must be removed from under the existing pavement section in various areas, some project costs for strengthening the pavement will be reduced due to removing the need to import fill material to backfill voids when the buried topsoil is removed. Staff estimates the overall project cost required to increase the pavement from a 5-ton design to a 10-ton design will be $42,000. Staff anticipates requesting approvals from the Public Works Committee and the City Council in April or May to revise the City's current MSAS system, and will explain in detail how the City receives funding due to its MSAS system. Municipal utilities do not exist in the project area and are not proposed to be extended to the project area or constructed as part of this project. Stormwater runoff is directed into drainage ditches along both sides of Tiger Street. Runoff in the ditches is then conveyed through culverts under private driveways and intersecting streets before being discharged into low-lying areas generally north of Armstrong Boulevard. There are no known issues with stormwater management in the project area and no improvements to existing drainage ditches are proposed with this project. On January 12, 2021 the Ramsey City Council adopted resolution #21-009, ordering Staff to prepare plans and specifications for improvement project #21-02, Tiger Street Reconstruction. Staff prepared plans and specifications in-house as part of their normal duties. 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 sections, which includes information on the proposed pavement section. Final plans are available upon request from the City Engineer. Staff proposes to open bids on May 12, 2021, and to present the bid results to City Council on May 25, 2021 for award of a construction contract to the lowest responsible bidder. Letters were mailed to property owners on January 15, 2021, notifying them of the proposed reconstruction of Tiger Street. Only one response has been received to date, which inquired if traffic speed reduction improvements will be incorporated into the project, and confirming the scope of the project will not include curb and gutter or off-street pedestrian facilities. Staff informed the resident that in 2013 the Public Works Committee reviewed a 3-way stop request at Tiger Street and 171st Avenue, and that a speed study was performed finding an average speed of 29.4 mph, which is below the 30 mph statutory speed limit. Staff proposes to place the speed trailer on Tiger Street in the spring ahead of construction, and again in the fall after construction, to confirm traffic speeds pre and post -construction. The proposed improvements are designated as City Improvement Project #21-02, Tiger Street Reconstruction. Notification: If Council approves plans and specifications and authorizes advertising for bids, bids will be advertised on Friday April 16, and again on Friday April 23, both in the City's official newspaper, the Anoka Union Herald, and in Finance & Commerce. Observations/Alternatives: Motion to adopt Resolution #21-085 approving plans and specifications and authorizing advertisement for bids for Tiger Street Reconstruction, Improvement Project #21-02. Funding Source: