Adopt Resolution #22-175 Accepting Bids and Awarding Contract for Autumn Heights Street Reconstructions, Improvement Project #22-02

Purpose:
The purpose of this case is to adopt Resolution #22-175 Accepting Bids and Awarding Contract for Autumn Heights Street Reconstructions, Improvement Project #22-02.
 
Background:
City Improvement Project 22-02 proposes to reconstruct the streets within the Autumn Heights subdivision, generally located along both sides of Armstrong Boulevard between the 167^th and 169^th blocks. The streets total approximately 8,500 linear feet (1.61 miles) in length, and are 24-foot wide rural section with drainage swales along both sides of the streets. A street segment summary is attached to this case.
 
Project History

• 2022 – 2031 Capital Improvement Program – listed as street reconstruction for 2022
• Resolution #21-194, adopted July 13, 2021; City Council ordered the City Engineer to request proposals for Topographic Survey, Geotechnical Evaluations and Utility Testing for 2022 Pavement Management Program projects.
• Resolution #21-224, adopted August 10, 2021; City Council awarded a proposal to Hakanson Anderson for Topographic Survey, and Haugo Geotechnical Services for a geotechnical report of the project area.
• Resolution #21-300, adopted October 26, 2021; City Council ordered the City Engineer to prepare plans and specifications for the improvement project.
• June 21, 2022; Public Works Committee gave recommendations for City Council approving plans and specifications and authorizing advertisement for bids for Autumn Heights Street Reconstructions, Improvement Project #22-02.
• Resolution #22-150, adopted June 28, 2022; City Council approved plans and specifications and authorized advertisement for bids.
• August 3, 2022; Staff publicly opened bid proposals.

 
Pavement History
The streets within the subdivision were built between 1977 and 1988. Pavement maintenance has included an initial round of crack seal / seal coat improvements, and overlay between 1990 and 2002, followed by 2 more rounds of crack seal / seal coat improvements in 1997 and 2004. Maintenance crews have performed patching over the last several years, including extensive spray patching. 2021 PASER values were 2 for all street segments. PASER values of 2 are as low as any street segments within the City.
 
Ground Penetrating Radar (GPR) was performed on the street segments. Bituminous pavement thickness averages were between 3.3 and 3.9 inches thick on the various street segments. Aggregate base thickness was found to vary between 3.1 and 4.0 inches thick. The weighted average total section thickness was 7.0 inches.
 
Proposed Improvements
Staff review of the geotechnical report found the majority of sub-base material to be poorly graded sand and poorly graded sand with silt, these materials are well suited for pavement support and are considered non-frost susceptible and are also free draining materials. An approximately 600-foot section of 167^th Lane east of Armstrong Boulevard found undesirable materials in the top 3 feet of sub-base. These materials are proposed to be replaced with 2 feet of select granular material on top of geotechnical fabric.
 
For the project east of Armstrong Boulevard, Staff if proposing to use the current standard City pavement section of 4 inches aggregate base, and 3.5 inches new bituminous pavement. The 4 inches of aggregate base is proposed to be composed of recycled reclamation material.
 
For the project west of Armstrong Boulevard, Staff is proposing to use a modified reclamation rehabilitation. This will include reclamation of the existing bituminous and underlying aggregate base, removal of 2 inches reclamation material, and placement of 2 inches new bituminous pavement. This will leave 4 to 5 inches of reclamation material in-place as support for the new 2 inches of bituminous pavement. This method will remove the need to remove and replace driveway tie-ins, and greatly reduce the required boulevard restoration.
 
This project proposes to add a half cul-de-sac to the dead end on 169^th Avenue west of Rabbit Street. The half cul-de-sac can be constructed within the existing right-of-way on the south half of 169^th Avenue. Extensive review found no right-of-way or roadway easements currently exist for the north half of 169^th Avenue. Internal Staff discussions with public safety and public works support this proposed improvement. Any improvements beyond the existing roadway would require easements, and would have severe impacts on the property along the north side of 169^th Avenue.
 
The current swales along the streets are not proposed to be re-graded as part of this project beyond minor grading associated with replacing the street culverts, no issues with the drainage was discovered during project design. The existing metal culverts crossing the streets are proposed to be removed and replaced with concrete culverts. This is to ensure the culverts will last at least through the proposed 60-year design life of the fully reconstructed streets.
 
Build Process

• Install traffic control and erosion control measures
  • These are maintained throughout the project
• Project removals (streets east of Armstrong Blvd)
  • Perform any subsoil corrections
• Place new concrete curb and gutter (approx. 400-foot section of 167^th Lane west of Armstrong Blvd)
  • Existing bituminous curbing will not hold up to reclamation process
• Remove excess reclaim material, shape and compact remaining material
  • Remove approx. 1.5 inches on streets east of Armstrong Blvd
  • Remove 2 inches on streets west of Armstrong Blvd
  • Excess reclaim is stockpiled and will be used on future City projects
• Place first lift of bituminous pavement on streets east of Armstrong Blvd
• Finish driveway repairs
• Restore the boulevard in any impacted areas
  • 2 inches topsoil, seed and hydro-mulch
  • Due to project timing, dormant seeding may be required
• Traffic Control devices are removed as the project allows
• Place the final lift of bituminous pavement
• Erosion control measures are removed after restoration has been completed

 
Preliminary Schedule Remaining

• Council Awards Contract to the lowest responsible bidder
  • August 8, 2022
• Contractor begins construction
  • August 2022
• Contractor Substantially Completes construction
  • October 31, 2022
• Contractor Final Completion (final turf restoration, project clean up, punch list created)
  • May 30, 2023

 
The proposed improvements are designated as City Improvement Project #22-02, Autumn Heights Street Reconstructions.

Advertisements were published in the Anoka Union Herald and in Finance & Commerce on July 1 and July 8, 2022. Bids were also advertised on-line on Quest CDN.
 
Letters will be mailed to property owners with updates on the project status. Engineering Staff maintains a project webpage, which will be updated as new information is made available throughout the project.

Alternative #1 – Motion to adopt Resolution #22-175 Accepting Bids and Awarding Contract for Autumn Heights Street Reconstructions, Improvement Project #22-02, to GMH Asphalt Corporation for the bid in the amount of $897,894.48.
 
Alternative #2 – Motion to deny adoption of Resolution #22-175 at this time.

On August 3, 2022 a total of five (5) bids were received, opened, tabulated, and found to comply with the advertisement for bids.
 

CONTRACTOR	TOTAL BID
GMH Asphalt Corporation	$897,894.48
Douglas-Kerr Underground, L.L.C.	$930,751.25
North Valley, Inc.	$978,417.86
C.S. McCrossan Construction, Inc.	$1,022,556.15
Meyer Contracting, Inc.	$1,216,370.64
Engineer’s Estimate	$974,783.92

 
The bid of GMH Asphalt Corporation of Chaska, Minnesota, in the amount of $897,894.48 for the total bid for construction of said improvements in accordance with the approved plans and specifications and advertisement for bids, is the lowest responsible bidder. Adding indirect costs in the amount of 23-percent brings total project costs to $1,104,410.21.
 
Per the final plans and specifications, estimated construction costs were $974,783.92. After adding 23-percent indirect costs for administrative, engineering, finance, and legal costs, estimated project costs totaled $1,198,984.22. The low bid is 8-percent less than the engineer’s estimate, and the estimate was generally in the middle of bidding costs.
 
Funding for this improvement is proposed to come from Pavement Management Funds, and Stormwater Utility Funds.

• Street Project Costs                $968,693.24
• Storm Sewer Project Costs     $135,716.97
• Total Project Costs               $1,104,410.21

 
Hakanson Anderson proposes to provide construction staking in a total not-to-exceed amount of $10,840.00. These costs are included in the 23-percent indirect costs. Staff feels these costs are reasonable based on the scope of the proposed improvements and required staking and recommends accepting the proposal, which is attached for reference.
 
City Staff proposes to administer and inspect construction.
 
Plans and specifications were prepared in-house as part of Staff’s normal duties.
 
Outside costs incurred to date as engineering indirect costs include:

• $11,900.00 for Haugo Geo Technical Services, LLC to supply a geotechnical report of the project area.
• $4,500.00 for Hakanson Anderson to collect topographic survey of the project area.

Staff recommends Alternative #1.

Motion to adopt Resolution #22-175 Accepting Bids and Awarding Contract for Autumn Heights Street Reconstructions, Improvement Project #22-02, to GMH Asphalt Corporation for the bid in the amount of $897,894.48.