Agenda - Public Works Committee - 01/21/2025

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5. 4. Public Works Committee Meeting Date: 01/21/2025 Primary Strategic Plan Initiative: Address infrastructure needs. Title: Consider Recommendation for Design Alternative for High Point Street Reconstruction, Improvement Project #25-05 Purpose/Background: Purpose: The purpose of this case is to consider recommending a preferred design alternative for the Zirconium Street cul-de-sac as part of the High Point Street Reconstruction, Improvement Project #25-05. Background: The proposed 2025 — 2034 Capital Improvement Plan (CIP) identifies the streets within the High Point and Section 22 Unplatted subdivision for street reconstruction in 2025. A street segment summary for the project is attached to this case. Project History • May 28, 2024, the Ramsey City Council adopted Resolution #24-138, accepting and awarding a proposal to Hakanson Anderson for topographic survey of the project area. • August 12, 2024, the Ramsey City Council adopted Resolution #24-220, accepting and awarding a proposal to Independent Testing Technologies, Inc. for a geotechnical report of the project area. • November 19, 2024, the Ramsey Public Works Committee recommended City Council order plans and specifications for said improvements. • November 26, 2024, the Ramsey City Council adopted Resolution #24-340, ordering the City Engineer to prepare plans and specifications for said improvements. Project Scope This project proposes to reconstruct the streets within the High Point and Section 22 Unplatted subdivision, generally located between Ramsey Boulevard and Zirconium Street, between 155th and 157th Avenues. The street within Section 22 Unplatted (156th Avenue) is 26-foot urban with bituminous curbing and rural with drainage swales at the low point. The streets within High Point are 31-foot urban section with bituminous curbing and cross street valley gutters with drainage flumes at low points. The streets total approximately 1.67 miles in total length, traffic counts have not been taken within the project area. Staff is proposing to replace the bituminous curbing with surmountable concrete curb and gutter. Where feasible storm sewer inlets and storm sewer piping will replace bituminous flumes and cross gutters for drainage. During initial project review, staff identified the Zirconium Street cul-de-sac is in need of further discussion. The current City design standards require cul-de-sacs be built to a 100-foot diameter within a 120-foot right of way. The Zirconium Street cul-de-sac was built to a 165-foot diameter within a 200-foot diameter right of way. Placing the cul-de-sac back to this oversized diameter is not desirable due to the additional time and costs required to maintain it, and staff has explored several replacement options. Option 1: Replace the cul-de-sac back to existing dimension • Build back the 165' diameter cul-de-sac (replace bit curb with surmountable concrete curb and gutter) o Minimizes impacts to adjacent properties • Tie -into existing driveways, boulevard restoration behind new concrete curb and gutter