Consider recommending City Council authorization to prepare plans and specifications for 2024 Neighborhood Pavement Overlay Improvements, Improvement Project #24-07

Purpose:
The purpose of this case is to consider recommending City Council authorization to prepare plans and specifications for 2024 Neighborhood Pavement Overlay Improvements, Improvement Project #24-07.
 
Background:
The proposed 2024 – 2033 Capital Improvement Program (CIP) identifies seven (7) subdivisions for pavement overlay improvements in 2024. Street segment summaries are attached to this case.
 
This project proposes to mill and overlay 7 subdivisions across the City. The projects total approximately 4.16 miles in length, with a varying mill thicknesses proposed. The project areas include:
 

• Alpine Acres 1^st & 2^nd
  • Generally located east of Sunfish Lake Blvd and north of Alpine Drive
    • Residential townhouse subdivision
    • Construction in 2004
      • 0.85 miles of 32’ wide urban section with concrete curb & gutter
    • Crack seal / seal coat improvements in 2009 and 2016
    • Crack seal improvement in 2023
  • Subdivision was prioritized due to pavement stripping

 

• Bowers Mississippi Acres 1^st, 2^nd, & 3^rd
  • Generally located south of Riverdale Drive and 148^th Avenue
    • Residential single-family house subdivision
    • Construction in 1982
      • 0.99 miles of mix 24’ wide urban section with bituminous curbing and rural section with drainage swales adjacent to roadway
    • Crack seal / seal coat improvement in 1996
    • Overlay improvement in 2004
    • Crack seal / seal coat improvements in 2009 and 2016
  • Subdivision was prioritized due to concerns pavement conditions falling beyond scope of pavement overlay improvement

 

• Gateway Industrial Park 2^nd
  • Generally located southwest of Bunker Lake Blvd and Sunfish Lake Blvd
    • Commercial / Industrial subdivision
    • Constructed between 1991 and 2003
      • 0.32 miles of 38’ wide urban section with concrete curb and gutter
    • Crack seal / seal coat improvements in 2003, 2012 and 2017

 

• Section 27 Unplatted
  • Generally located southwest of Bunker Lake Blvd and Sunfish Lake Blvd
    • Commercial / Industrial subdivision
    • Constructed in 2001
      • 0.47 miles of 40’ wide urban section with concrete curb and gutter
    • Crack seal / seal coat improvements in 2006 and 2018

 

• Orchard Hills Townhomes
  • Generally located south of Alpine Drive and east of TH 47
    • Residential townhouse subdivision
    • Construction in 2001
      • 0.30 miles of 32’ wide urban section with concrete curb & gutter
    • Crack seal / seal coat improvements in 2006 and 2013
    • Crack seal improvement in 2021

 

• Seasons of Ramsey
  • Generally located north of Bunker Lake Blvd, east of Center Street
    • Residential single-family and townhouse subdivision
    • Construction in 2013
      • 0.08 miles of 31’ wide urban section with concrete curb & gutter
    • Subdivision was prioritized due to pavement condition and project location
      • Street patching due to Garden View development service connections
      • Development contributed funds towards overlay improvements

 

• Town Center Gardens 1^st, 2^nd, & 3^rd
  • Generally located north of Bunker Lake Blvd, west of Ramsey Blvd
    • Residential townhouse subdivision
    • Construction between 2004 and 2005
      • 1.14 miles of 32’ wide urban section with concrete curb & gutter
    • Crack seal / seal coat improvement in 2010
    • Crack seal improvement in 2021

 
Proposed Improvements
Review of ground penetrating radar (GPR), as-built plans, and the Bowers Drive Mill and Overlay Evaluation performed by Braun Intertec indicates three separate mill and overlay thicknesses will be used on the various street segments. Orchard Hills Townhomes subdivision does not have sufficient pavement thickness for a 2-inch mill and overlay improvements, therefore a 1.5-inch mill and bituminous overlay will likely be used. During design, other mill depths will be explored to determine the most efficient pavement section. After review of the Bowers Drive Mill and Overlay Evaluation, which is attached to this case for reference, Staff is proposing to perform a full-depth mill and pavement overlay. Additionally, some minor base corrections are anticipated to be required. All remaining subdivisions have sufficient existing bituminous thickness to perform a 2-inch mill and bituminous overlay.
 
Per typical overlay improvements, spot concrete curb and gutter repairs will be performed on damaged curb. Where feasible, the City has switched to a saw & seal method for curb cracks at a significant cost savings. This is performed on hairline cracks, without vertical displacement. For areas of bituminous curbing, repairs to the curbing are not anticipated, though the City typically updates curb adjacent to storm sewer inlets to concrete during mill and overlay projects.
 
Municipal sewer and water exist under all street segments in the project except for Bowers Drive. This project is not proposing any repairs to watermain or sanitary sewer. Minor storm sewer structure repairs, typically re-grouting catch basins, is proposed. Additionally, Staff will review sanitary sewer castings to determine if they meet the current specifications.
 
Four of the townhouse subdivisions include extensive pedestrian ramps which do not meet current American with Disability Act (ADA) standards, and will require upgrades. On November 14, 2023, City Council accepted a proposal from Bolton & Menk, Inc to perform a topographic survey of the pedestrian ramps, which Staff will use to design the ADA pedestrian ramp improvements.
 
Project Timelines
Staff is proposing to prepare plans and specifications for these improvements in-house, as part of their normal duties. The following are the proposed general project timelines:
 

• November 28, 2023    City Council authorization to prepare plans and specifications
• Jan. – Mar. 2024         Staff prepares plans and specifications
• Mar. – Apr. 2024        City Council approves plans, authorize bidding
• May – June 2024        Bid opening, City Council awards contracts
• Summer 2024              Construction

 
Staff proposes to bid 2024 projects separately, but to bid and award projects as close together as practical, which generally allows for a better bidding environment for the City.

Notification is not required for this case.

Timeframe:
Staff anticipates this case will take approximately 15 minutes to present and respond to questions.
 
Observations:
Estimates are CIP level and will be updated during the design process.
 
Alternatives:
Alternative #1: Motion to recommend City Council authorization to prepare plans and specifications for 2024 Neighborhood Pavement Overlay Improvements, Improvement Project #24-07.
 
Alternative #2: Motion of other.

Funding for this improvement is proposed to come from Pavement Management Funds and Stormwater Utility Funds.
 

• Street project costs                  $1,571,100
• Stormwater project costs        $114,195
• Total project costs                   $1,685,295

Staff recommends alternative #1.

Motion to recommend City Council authorization to prepare plans and specifications for 2024 Neighborhood Pavement Overlay Improvements, Improvement Project #24-07.