Title
Requisition No. REQ-0005317
42-Inch Downriver Transmission Main Loop
CIP #122016 / BCE Score: 76.0
Body
Agenda of: September 23, 2026
Item No.: 2026-352
Amount: $38,052,187.50
TO: The Honorable
Board of Directors
Great Lakes Water Authority
FROM: Suzanne R. Coffey, P.E.
Chief Executive Officer
Great Lakes Water Authority
DATE: August 28, 2026
RE: Requisition No. REQ-0005317
42-Inch Downriver Transmission Main Loop
Vendor: L. D’Agostini & Sons, Inc.
Status: New Contract/PO
MOTION
Upon recommendation of Cheryl Porter, Chief Operating Officer - Water and Field Services, the Board of Directors (Board) of the Great Lakes Water Authority (GLWA), authorizes the Chief Executive Officer (CEO) to enter into Requisition No. REQ-0005317, “42-Inch Downriver Transmission Main Loop” with L. D’Agostini & Sons, Inc., at a cost not to exceed $38,052,187.50 for a duration of 845 days; and authorizes the CEO to take such other action as may be necessary to accomplish the intent of this vote.
BACKGROUND
The Downriver communities of Riverview, Brownstown Township, Trenton, Woodhaven, Grosse Ile Township, Gibraltar, Flat Rock, Rockwood, South Rockwood, and Berlin Township are serviced by a single feed main along Allen Road supplied by Southwest Water Treatment Plant. The main purpose of this project is to provide redundancy to the Downriver communities serviced by GLWA in this portion of the system by constructing a new main along Inkster Road. This project is part of a broader initiative to build new water transmission mains that will form a loop, ensuring redundant and reliable water service for this area. Additionally, this project includes metering improvements in Trenton to allow for the 24-inch Trenton main procured by GLWA from the City of Trenton to allow flow to travel south in the event of a break to bolster redundancy. Also, a new meter pit for the City of Taylor will also be constructed as an opportunity project with the City that will be funded by the City of Taylor. The demolition of the two (2) reservoirs at Electric Avenue Pump Station will also occur under this project as those reservoirs have become hazardous with the decay of the exterior concrete wall exposing some of the reinforcing steel.
This Construction Contract is for the installation of approximately 20,800 linear feet of new 42-inch diameter transmission main that will connect to the existing 48-inch diameter pipeline and the 30-inch transmission main. The project also includes the demolition of the two (2) reservoirs at Electric Avenue Pump Station, improvements to existing metering facilities in the City of Trenton, and the construction of a new meter pit with the City of Taylor.
JUSTIFICATION
As identified in the GLWA 2015 Water Master Plan, a break along this 65-year-old main could result in the complete loss of service for several of the above listed Downriver communities until a repair is made.
FINANCIAL PLAN IMPACT
Summary: Sufficient funds are provided in the financial plan for this project.
Funding Source: 5519 - Water Construction Fund
Cost Center: 880000 - Capital Improvement Program
Spend Category: Construction
Project Worktag: PRJ-122016
Estimated Cost by Year and Related Estimating Variance: See table below.
Fiscal Year
FY26 $ 3,200,000.00
FY27 37,921,000.00
FY28 13,779,000.00
Financial Plan Estimate $54,900,000.00
Proposed Contract Award $38,052,187.50
Estimating Variance $16,847,812.50
COMMITTEE REVIEW
This item was presented to the Operations and Resources Committee at its meeting on September 9, 2026.
SHARED SERVICES IMPACT
This item does not impact the shared services agreement between GLWA and DWSD.