5.2.
| Public Works Committee |
| Meeting Date: | 10/21/2025 |
| Primary Strategic Plan Initiative: | {ud_pd8} |
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 2nd & 3rd Street Reconstructions project.
The reconstruction is proposed to be a Full Reconstruction in the CIP. 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 142nd 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.
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 staking needs during construction.
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 2nd & 3rd Street Reconstructions project.
The reconstruction is proposed to be a Full Reconstruction in the CIP. 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 142nd 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
- Anticipate use of the driveway to be kept available
- 24 with replacement required across the driveway
- 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 staking needs during construction.
Notification:
Notification is not required for this case.
Time Frame/Observations/Alternatives:
Observations:
Staff determined the curb and gutter replacement by visually inspecting the curb throughout the project in September of 2025.
Alternatives:
Alternative #1 – Motion recommending all concrete curb and gutter be replaced as part of the Flintwood Hills 2nd & 3rd Street Reconstructions, Improvement Project #26-05.
Alternative #2 – Motion recommending spot concrete curb and gutter be replaced per staff review as part of the Flintwood Hills 2nd & 3rd Street Reconstructions, Improvement Project #26-05.
Alternative #3 – Motion of other.
Staff determined the curb and gutter replacement by visually inspecting the curb throughout the project in September of 2025.
Alternatives:
Alternative #1 – Motion recommending all concrete curb and gutter be replaced as part of the Flintwood Hills 2nd & 3rd Street Reconstructions, Improvement Project #26-05.
Alternative #2 – Motion recommending spot concrete curb and gutter be replaced per staff review as part of the Flintwood Hills 2nd & 3rd Street Reconstructions, Improvement Project #26-05.
Alternative #3 – Motion of other.
Funding Source:
Funding for curb and gutter and other street related improvements for this project are proposed to come from TIF 1, per the proposed 2026 – 2035 Capital Improvement Plan. The typical difference in cost between a full street reconstruction ($1,200,000 / mile) and a full-depth reconstruction (FDR) ($750,000 / mile) is approximately 35-percent. Because the existing pavement section is not thick enough for an FDR, staff anticipates a cost difference closer to 20-percent.
Staff estimated the cost for removal and replacement of concrete curb and gutter alone.
The CIP estimated costs for this project are $1,168,308 ($1,015,920 Street / $152,388 Storm).
Staff estimated the cost for removal and replacement of concrete curb and gutter alone.
- Spot replacement ($51/ LF) $150,250
- Full replacement ($24 / LF) $192,950
- Difference $42,700; 22-percent
The CIP estimated costs for this project are $1,168,308 ($1,015,920 Street / $152,388 Storm).
Recommendation:
Staff is seeking a recommendation from the Committee on whether all concrete curb and gutter should be replaced or only the damaged curb and gutter.
Outcome/Action:
Based on Committee recommendation.
Attachments
Form Review
| Inbox | Reviewed By | Date |
|---|---|---|
| Bruce Westby | Bruce Westby | 10/16/2025 02:28 PM |
| Brian Hagen | Marsha Weidner | 10/16/2025 02:29 PM |
- Form Started By:
- Joe Feriancek
- Started On:
- 10/14/2025 04:38 PM
- Final Approval Date:
- 10/16/2025