5.5.
Public Works Committee
- Meeting Date:
- 04/18/2023
- Submitted For:
- Joe Feriancek
- By:
- Joe Feriancek, Engineering/Public Works
Title:
Consider Recommending City Council Approving Plans and Specifications and Authorizing Advertisement for Bids for Barthel’s Rum River Acres 2nd Street Reconstructions, Improvement Project #23-05
Purpose/Background:
Purpose:
The purpose of this case is to consider recommending City Council approving plans and specifications and authorizing advertisement for bids for Barthel’s Rum River Acres 2nd Street Reconstructions, Improvement Project #23-05.
Background:
City Improvement Project #23-05 proposes to reconstruct the streets within the Barthel’s Rum River Acres 2nd subdivision, generally located between 161st Avenue and 164th Avenue, adjacent to the Rum River. The streets are 24 feet wide rural section with drainage swales along both sides of the streets, totaling 1.64 miles in length. A street segment summary is attached to this case for reference.
Project History
Pavement History
The streets within the subdivision were built in 1988. Pavement maintenance has included an initial round of crack seal / seal coat improvements in 1994. In 1997 161st Lane and Dysprosium Street received overlay improvements. All street segments received 2 more rounds of crack seal / seal coat improvements in 2001 and 2009. Maintenance crews have performed patching over the last several years, including patching some areas of the road with clay subgrade coming to the surface. 2021 PASER values we 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 3.0 and 3.7 inches thick on the various street segment. Aggregate base thickness was found to vary between 4.0 and 4.6 inches thick. GPR data was not available for some street segments. The GPR summary is included in the attached street segment summary.
Proposed Improvements
Staff review of the geotechnical report found a mix of native sandy and clayey alluvial soils made up the sub-base material. The sandy materials are well suited for pavement support and are considered non-frost susceptible and are also free draining materials. The clayey soils are considered undesirable materials, and are proposed to be replaced with 2 feet of select granular material on top of geotechnical fabric. Generally, these subsoil corrections are proposed along 164th Avenue, the northern portion of Germanium Street, and 161st Avenue connecting into the Estates of Silver Oaks subdivision. Additionally, the southern portion of Germanium Street and adjacent 161st Lane was found to have a high-water table, which seasonally impacts the strength of the pavement section. The project proposes to raise the elevation of the pavement approximately 1-foot to allow the pavement section to be dry during seasonally high-water. In the areas not requiring corrections, Staff is proposing to use a pavement section made up of 6-inches in-place reclamation material below 3.5-inches of new bituminous pavement.
This project proposes to remove the stub street at the corner of Dysprosium Street and 161st Lane, and create a true corner, since the development of the adjacent Scout Camp property is not currently proposed to occur.
In general, the current swales along the streets are not proposed to be re-graded as part of this project. Due to the nature of subsoil corrections, and raising the profile of the pavement, some areas of the project will have impacts to the in-slopes between the pavement and bottom of the swales. No changes to the current drainage pattern are proposed. The existing culverts crossing the streets are proposed to be removed and replaced, this is to ensure the culverts will last at least through the proposed 60-year design life of the street. Due to the subsoil corrections, drain tile will be added in the low areas to properly drain the pavement subbase. The drain tile is proposed to drain into the existing swales.
Preliminary Schedule Remaining
Final plans are not attached to this case to prevent potential bidders from downloading plans attached to the case to prepare and submit their bids, rather than purchasing the plans through QuestCDN, the electronic bidding software used by the City of Ramsey. This ensures all bidders are bidding off the same set of plans, and all bidders are notified of any plan revisions (addenda) issued during the bidding process. Attached is the title sheet showing the scope of the improvements, as well as a plan sheet showing the typical sections, which includes information on the proposed pavement section. Plans are available upon request from the City Engineer.
The purpose of this case is to consider recommending City Council approving plans and specifications and authorizing advertisement for bids for Barthel’s Rum River Acres 2nd Street Reconstructions, Improvement Project #23-05.
Background:
City Improvement Project #23-05 proposes to reconstruct the streets within the Barthel’s Rum River Acres 2nd subdivision, generally located between 161st Avenue and 164th Avenue, adjacent to the Rum River. The streets are 24 feet wide rural section with drainage swales along both sides of the streets, totaling 1.64 miles in length. A street segment summary is attached to this case for reference.
Project History
- 2023 – 2032 Capital Improvement Program – listed as street reconstruction for 2023
- August 23, 2022 City Council accepted proposals for geotechnical report and topographic survey
- November 15, 2022 Public Works Committee recommended City Council order plans and specifications
- December 13, 2022 City Council ordered plans and specifications
- February 28, 2023 City Council accepted a proposal for an addendum to the geotechnical report
Pavement History
The streets within the subdivision were built in 1988. Pavement maintenance has included an initial round of crack seal / seal coat improvements in 1994. In 1997 161st Lane and Dysprosium Street received overlay improvements. All street segments received 2 more rounds of crack seal / seal coat improvements in 2001 and 2009. Maintenance crews have performed patching over the last several years, including patching some areas of the road with clay subgrade coming to the surface. 2021 PASER values we 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 3.0 and 3.7 inches thick on the various street segment. Aggregate base thickness was found to vary between 4.0 and 4.6 inches thick. GPR data was not available for some street segments. The GPR summary is included in the attached street segment summary.
Proposed Improvements
Staff review of the geotechnical report found a mix of native sandy and clayey alluvial soils made up the sub-base material. The sandy materials are well suited for pavement support and are considered non-frost susceptible and are also free draining materials. The clayey soils are considered undesirable materials, and are proposed to be replaced with 2 feet of select granular material on top of geotechnical fabric. Generally, these subsoil corrections are proposed along 164th Avenue, the northern portion of Germanium Street, and 161st Avenue connecting into the Estates of Silver Oaks subdivision. Additionally, the southern portion of Germanium Street and adjacent 161st Lane was found to have a high-water table, which seasonally impacts the strength of the pavement section. The project proposes to raise the elevation of the pavement approximately 1-foot to allow the pavement section to be dry during seasonally high-water. In the areas not requiring corrections, Staff is proposing to use a pavement section made up of 6-inches in-place reclamation material below 3.5-inches of new bituminous pavement.
This project proposes to remove the stub street at the corner of Dysprosium Street and 161st Lane, and create a true corner, since the development of the adjacent Scout Camp property is not currently proposed to occur.
In general, the current swales along the streets are not proposed to be re-graded as part of this project. Due to the nature of subsoil corrections, and raising the profile of the pavement, some areas of the project will have impacts to the in-slopes between the pavement and bottom of the swales. No changes to the current drainage pattern are proposed. The existing culverts crossing the streets are proposed to be removed and replaced, this is to ensure the culverts will last at least through the proposed 60-year design life of the street. Due to the subsoil corrections, drain tile will be added in the low areas to properly drain the pavement subbase. The drain tile is proposed to drain into the existing swales.
Preliminary Schedule Remaining
- Council Approves Plans and Specifications / Authorizes Ad for Bids
- April 25, 2023
- Staff Receives Bids
- May 19, 2023
- Council Awards Contract to the lowest responsible bidder
- May 23, 2023
- Contractor begins construction
- June 2023
- Contractor Substantially Completes construction
- September 1, 2023
- Contractor Final Completion (verify final restoration, punch list created)
- September 29, 2023
Final plans are not attached to this case to prevent potential bidders from downloading plans attached to the case to prepare and submit their bids, rather than purchasing the plans through QuestCDN, the electronic bidding software used by the City of Ramsey. This ensures all bidders are bidding off the same set of plans, and all bidders are notified of any plan revisions (addenda) issued during the bidding process. Attached is the title sheet showing the scope of the improvements, as well as a plan sheet showing the typical sections, which includes information on the proposed pavement section. Plans are available upon request from the City Engineer.
Timeframe:
Staff estimates up to 10 minutes will be needed to present this case and respond to questions.
Observations/Alternatives:
Observations:
During project design and review of the initial geotechnical report, Staff noted a change in the subsoil conditions between gaps of several hundred feet in the soil borings. Additional soil borings within an addendum to the geotechnical report were acquired, which allowed Staff to more accurately place the limits to the subsoil correction areas, and expand the areas as necessary. Performing additional soil borings was discussed as a hopeful solution to change orders due to unforeseen subsoil conditions as part of the 2021 Tiger Street Reconstruction, Improvement Project #21-02.
Alternatives:
Alternative #1 – Motion recommending City Council approving plans and specifications and authorizing advertisement for bids for Barthel’s Rum River Acres 2nd Street Reconstructions, Improvement Project #23-05.
Alternative #2 – Motion of other.
During project design and review of the initial geotechnical report, Staff noted a change in the subsoil conditions between gaps of several hundred feet in the soil borings. Additional soil borings within an addendum to the geotechnical report were acquired, which allowed Staff to more accurately place the limits to the subsoil correction areas, and expand the areas as necessary. Performing additional soil borings was discussed as a hopeful solution to change orders due to unforeseen subsoil conditions as part of the 2021 Tiger Street Reconstruction, Improvement Project #21-02.
Alternatives:
Alternative #1 – Motion recommending City Council approving plans and specifications and authorizing advertisement for bids for Barthel’s Rum River Acres 2nd Street Reconstructions, Improvement Project #23-05.
Alternative #2 – Motion of other.
Funding Source:
Funding for this improvement is proposed to come from Pavement Management Funds and Stormwater Utility Funds.
Staff has completed an estimated based on the final plans and anticipated 2023 construction costs, with a total estimated project cost of $2,128,746.75, which includes 23-percent indirect costs for administrative, engineering, finance, and legal costs.
Staff has completed an estimated based on the final plans and anticipated 2023 construction costs, with a total estimated project cost of $2,128,746.75, which includes 23-percent indirect costs for administrative, engineering, finance, and legal costs.
- Street Project Costs $1,965,662.89
- Storm Sewer Project Costs $163,083.86
- Total Estimated Costs $2,128,746.75
Recommendation:
Staff recommends Alternative #1
Action:
Motion recommending City Council approving plans and specifications and authorizing advertisement for bids for Barthel’s Rum River Acres 2nd Street Reconstructions, Improvement Project #23-05.
Attachments
Form Review
| Inbox | Reviewed By | Date |
|---|---|---|
| Bruce Westby | Bruce Westby | 04/13/2023 01:54 PM |
| Brian Hagen | Brian Hagen | 04/13/2023 04:20 PM |
- Form Started By:
- Joe Feriancek
- Started On:
- 04/06/2023 08:19 AM
- Final Approval Date:
- 04/13/2023