Agenda - Council - 04/25/2023 - Laserfiche WebLink

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reconstruction as a Municipal State Aid Street must therefore be conditions upon certain parking restrictions. • Resolution #23-051, adopted March 14, 2023; City Council approved the plans and specifications and authorized advertisement of bids. Bids were publicly opened on Wednesday, April 19, 2023. Pavement History 161 st Avenue was constructed in 1979. Pavement maintenance has included a crack seal / seal coat improvement in 1993, a pavement overlay improvement in 2001 and a crack seal / seal coat improvement in 2009. Maintenance crews have performed patching over the last several years, however the pavement is currently in extremely poor condition. In 2021 PASER values were 3 for 16 V Avenue, the street was not rated in 2022 as it is past the stage where any treatment other than a full reconstruction is recommended. Ground Penetrating Radar (GPR) was performed on the street segment. Bituminous pavement thickness was found to have an average thickness of 3.37 inches. The aggregate base was found to have an average thickness of 3.23 inches. The overall pavement section average thickness is 6.59 inches. Proposed Improvements 161 st Avenue is a Municipal State Aid (MSA) street, and must be designed to MSA standards. Staff is proposing to generally leave the street at the current 29-foot width, but replace the bituminous curb with concrete curb and gutter. Based off the Traffic Impact Study performed for the PACT Charter School estimated future 2,500 ADT at full build out, Staff is proposing a 10-inch-thick pavement section to meet the required 10-ton MSA design requirement. This will be made up of 4 inches new bituminous pavement over 6 inches of aggregate base. Pavement markings will generally match existing markings, a center skip line to allow passing as well as fog lines to mark the outside edge of the lanes. The Traffic Impact Study determined turn lanes would not be necessary to handle future traffic levels. The existing driveways and boulevards along the corridor will have impacts due to construction, however, all impacts are proposed to be contained with the City -owned right of way. The project will add a 10-foot wide bituminous trail along the north side of 161st Avenue. This trail will connect to the existing pedestrian landing built with the 2020 Variolite Street reconstruction, and connect to the existing trail at the west side of Central Park. The existing trail from the Central Park drive to Armstrong Boulevard is proposed to be reconstructed with this project as well. All trail crossings will include concrete pedestrian ramps, built to current ADA Standards. The Central Park southern parking lot and attaching park drives will be reconstructed, including concrete curb and gutter to meet current City of Ramsey requirements. Two basketball courts will be marked out in the parking lot, and include 4 new basketball hoops. Central Park Main Parking Lot will be reconstructed in the fall of 2023 as a separate project, Improvement Project #23-02. Stormwater runoff is currently handled through curb cuts and swales to existing ponding areas located in drainage and utility easements, on the south side of 161st Avenue. Easements exists at 16045 Xenolith Street; which handles runoff on the eastern portion of the project, and a large ponding area on 7826 161st Avenue and 7833 159th Lane; which handles runoff on the western portion of the project as well as runoff from the Central Park parking lot. This project is proposing to replace the existing curb cuts and swales with storm sewer inlets placed in the curb lines and piping to the ponding areas. This is to remove the safety hazard of having storm water runoff flowing across 161 st Avenue. The ponding areas on 7826 161st Avenue and 7833 159th Lane will need to be excavated approximately 7 feet deeper to accommodate piping. The storm sewer is proposed to handle the 161st Avenue corridor and existing drainage areas, no accommodations for PACT Charter or a future Saint Katherine Drexel development are being proposed. Staff is working with the property owners at 7826 161st Avenue and 7833 159th Lane to replace or relocate some of the impacted trees at the bottom of the existing drainage pond. Municipal water and sanitary sewer utilities exist at the intersection of 161st Avenue and Variolite Street. These utilities will need to be extended to the west to connect the proposed PACT Charter School to the system. This project is extending 8-inch sanitary sewer and watermain, and is coordinating with PACT Charter for the location of their service connections. The services will be constructed up to the right of way, which is expanding an additional 14 feet north as part of the PACT Addition. The project stubs water and sewer into the southeast comer of Central Park, to allow for future connection of park facilities, when the time comes to replace the existing well and septic systems. Only a portion of Central Park is within the MUSA boundary, so at the time of connection a