Title
An Ordinance awarding the bid for Project No. 1093 for the Raintree Spillway Bridge Deck Rehabilitation Project to Concrete Strategies, LLC. in the amount of $1,161,870.65, and authorizing the City Manager to execute an agreement for the same. (PWC 6/9/25)
Body
Issue/Request:
An Ordinance awarding the bid for Project No. 1093 for the Raintree Spillway Bridge Deck Rehabilitation Project to Concrete Strategies, LLC. in the amount of $1,161,870.65, and authorizing the City Manager to execute an agreement for the same.
Key Issues:
• An inspection of the existing bridge determined that the aging 15-span multi-celled reinforced concrete solid slab on concrete walls bridge requires improvements due to deteriorating superstructure and substructure including end bents, wing walls, intermediate bents, and their connections to the superstructure slab. There is concern that high water levels could get behind the structure and wash out the approach roadway fill.
• The Raintree Spillway Bridge Deck Rehabilitation (Project No. 1093) designed by Great River Engineering will repair the aging bridge by removing the deteriorated sections through milling and hydro demolition and then repairing those areas as needed at either partial or full depth sections.
• The project will be funded by the voter-approved 2017 CIP Sales Tax Renewal.
• Public Works Engineering issued an advertisement for bids for the construction of Project No. 1093 on May 8th,2025, in accordance with state and federal statutes and local policies.
• Concrete Strategies, LLC. was determined to be the lowest responsive and responsible bidder by City staff.
• The City and Contractor desire to enter into an agreement for Project No. 1093.
Proposed Committee Motion:
I move to recommend to City Council approval of an Ordinance awarding the bid for Project No. 1093 for the Raintree Spillway Bridge Deck Rehabilitation Project to Concrete Strategies, LLC. in the amount of $1,161,870.65, and authorizing the City Manager to execute an agreement for the same.
Proposed City Council Motion:
FIRST MOTION: I move to advance to second reading an Ordinance awarding the bid for Project No. 1093 for the Raintree Spillway Deck Rehabilitation Project to Concrete Strategies, LLC. in the amount of $1,161,870.65, and authorizing the City Manager to execute an agreement for the same.
SECOND MOTION: I move for adoption of an Ordinance awarding the bid for Project No. 1093 for the Raintree Spillway Bridge Deck Rehabilitation Project to Concrete Strategies, LLC. in the amount of $1,161,870.65, and authorizing the City Manager to execute an agreement for the same.
Background:
The Raintree Spillway Bridge Deck Rehabilitation will meet the City’s goals and needs of extending the serviceable life of the structure while being less costly than a full replacement. The City conducted an initial assessment of the structure through MoDOT’s Bridge Engineering Assistance Program (BEAP). That initial assessment was funded entirely by MoDOT, and verified the structure had a reduced structural rating that needed to be repaired. Deficiencies included surface spalling on both the deck and vertical walls, along with exposed reinforcing steel.
The areas of concrete spalling, exposed and disconnected reinforcement steel will be repaired by this project. The project will upgrade outdated guardrails as well as repair/replace the conduit system for utilities alongside the bridge. Structural cracks will be epoxy pressure injected along the bridge bents. Exposed reinforcement will be cleaned for better adhesion to new concrete and to minimize future corrosion. New pavement markings will be placed once repair is completed. This work will extend the life of the bridge another 20 to 40 years.
Impact Analysis:
Public Works Engineering issued an advertisement for bids for the construction of Project No. 1093 on May 8th,2025. Potential bidders were notified through QuestCDN and on the City website. Two (2) responsive bids were received by the May 29th, 2025 bid opening date. The lowest bid received from Concrete Strategies, LLC. is above the engineer’s estimate but is still within budget for this project. City staff is recommending to proceed with awarding this construction contract. Construction is anticipated to begin July of 2025 with 90 days to achieve substantial completion.
Timeline:
Start: July 2025
End: November 2025
Presenter
Kim Ward, Staff Engineer
Recommendation
Recommendation: Staff recommends approval.
Committee Recommendation
Committee Recommendation: The Public Works Committee voted unanimously 3-0 (Councilmember Carlyle "Absent"), to recommend to City Council approval of an Ordinance awarding the bid for Project No. 1093 for the Raintree Spillway Bridge Deck Rehabilitation Project to Concrete Strategies, LLC. in the amount of $1,161,870.65, and authorizing the City Manager to execute an agreement for the same.