Agenda - Public Works Committee - 10/21/2025

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5. 2. Public Works Committee Meeting Date: 10/21/2025 Primary Strategic Plan Initiative: Address infrastructure needs. Title: Consider Recommending Full Curb and Gutter Replacement or Spot Curb and Gutter Replacement for Flintwood Hills 2nd & 3rd Street Reconstructions, Improvement Project #26-05 Purpose/Background: Purpose: The purpose of this case is to consider recommending replacing all concrete curb and gutter or to perform spot curb and gutter only where necessary due to damaged concrete for Flintwood Hills 2nd & 3rd Street Reconstructions, Improvement Project #26-05. Background: On June 24, 2025 City Council adopted Resolution #25-139 ordering plans and specifications for the Flintwood Hills lid & 3rd Street Reconstructions project. The reconstruction is proposed to be a Full Reconstruction in the C1P. A Full Reconstruction typically includes replacing the concrete curb and gutter, and building back a full street section. This causes for greater impacts to adjacent boulevards and driveways, but all work will still be within the City -owned right of way. During field review, staff has found that much of the existing concrete curb and gutter is still in useable condition. With the exception of 142 nd Avenue and 142nd Circle, where all curb and gutter is proposed to be replaced regardless due to high levels of exposed aggregate, approximately 31-percent of the curb and gutter needs replacement due to damage. When considering 142nd Avenue and 142nd Circle, the project as a whole could require 37-percent replacement. A typical Full -Depth Reclamation project with spot concrete curb and gutter replacement has below 10-percent curb and gutter replacement, though ADA pedestrian ramp replacements can sometime increase that percent. The last similar project, Wood Pond Hills 2nd _ 5th had 7-percent replacement. Not including the 13 driveways between 142nd Avenue and 142nd Circle which will be impacted, there are 92 additional driveways within the project limits. • 50 without any proposed curb and gutter replacement • 18 with partial curb and gutter replacement o Anticipate use of the driveway to be kept available . 24 with replacement required across the driveway o No use of the driveway during concrete cure time (1 week) Other than the impact due to limiting access, replacing the concrete curb and gutter typically impacts 6 to 8 feet of the boulevard behind the curb, which includes impacts to landscaping and irrigation systems. Staff is required to re -design the streets, matching the existing layouts as close a practical, which adds several weeks to project design. This also leads to additional stalking needs during construction. Notification: Notification is not required for this case.