Great Lakes Water Authority is scheduled to begin the first phase of an approximately $81 million water-main replacement along 14 Mile Road in Oakland County this month. About three miles of 48-inch prestressed concrete cylinder pipe are planned to be replaced with 54-inch steel pipe between Haggerty Road and Farmington Road, and construction is scheduled to continue through early 2028.
The timing follows a May failure at about half a 100-year design life. ClickOnDetroit reported that a 42-inch Auburn Hills main, installed in 1975 and designed to last 100 years, failed at roughly the halfway mark. WaterWorld tied the 14 Mile Road project to four major breaks in that corridor over seven years, and GLWA has a longer assignment already underway: a 2021 program to assess and rehabilitate more than 100 miles of drinking-water transmission main in six years.
What Six Years of Renewal Actually Covers
GLWA launched the Linear System Integrity Program in 2021 and describes it as an ongoing program of pipeline assessment and renewal. The aim is to renew deteriorated pipelines, reduce the impacts of failures, improve service levels, and increase reliability. Drinking-water transmission mains in southeast Michigan are the six-year mileage target, more than 100 miles assessed and rehabilitated. Wastewater interceptors are in the same program.
ClickOnDetroit reported May 12 on the Auburn Hills main. HDR says the drinking-water system serves nearly 4 million residents across eight Michigan counties. An 11-mile transmission main in Van Buren Township, installed in 1962, serves Romulus, Van Buren Township and Ypsilanti, and has broken 12 times since entering service.
A dozen breaks on one alignment is a thick emergency file for a single main. That report says the year-ahead calendar is how GLWA tries to find trouble before it becomes the next outage. Assess and rehabilitate is the other half of the published target. A diagnosis that never becomes a new pipe, or a lined one, does not meet the goal the authority has already set.
Seventy Years Old, Counted Two Ways
The University of Michigan Urban Collaboratory says the average pipe in the GLWA system is 70 years old. HDR, describing the integrity program, puts the average at approximately 70 and notes that some mains are more than 100 years old. The average has older pipe inside it.
Length is where the published figures split. ClickOnDetroit and HDR describe a transmission system of 800 miles. The Urban Collaboratory says GLWA has more than 816 miles of transmission mains. PCCP, the prestressed concrete cylinder pipe that failed in Auburn Hills and that phase one is planned to replace on 14 Mile Road, is split too. HDR says 400 of those 800 miles are PCCP. The university project says PCCP is the most common material, 47 percent of linear assets, or 389 miles.
Vintage is clearer than the mile-count. The collaboratory says 71 percent of GLWA's PCCP was fabricated in the 1960s and 1970s. The Urban Collaboratory describes durability problems associated with high-strength prestressing wire in PCCP from those decades. ClickOnDetroit reported May 12 that Olivia Olsztyn-Budry said the authority has about 80 miles of vulnerable PCCP. She said GLWA considers that vulnerability when it selects pipes for condition assessment.
Eighty miles is not another estimate of the whole PCCP inventory. It is a smaller class. On her account, it is already a factor in which mains get onto the inspection list.
Four Days From a Leak to a Rupture
Crews identified a leak on the Auburn Hills main on May 6. The line ruptured at approximately 1:30 a.m. on May 10, ClickOnDetroit reported. Four days from a known leak to a rupture is a narrow window on a transmission main.
The same investigation put the price of replacing all of that same type of pipe at approximately $1.6 billion, an estimated $20 million a mile. That is not the 14 Mile Road contract. A corridor job of about $81 million and a class-of-pipe estimate of $1.6 billion answer different questions, and they are not a sum.
ClickOnDetroit's May 12 report said the Auburn Hills main was designed to last 100 years and failed near 50. That report also said GLWA released an independent report in September, The Crisis Beneath Us: The Urgent Need to Invest in Michigan's Water Infrastructure, documenting statewide water and wastewater investment needs as high as $85 billion over 20 years.
The $85 billion is a two-decade, statewide figure for water and wastewater. The $1.6 billion is one published estimate for replacing a type of GLWA transmission pipe. The $81 million is a specific Oakland County project. Three numbers, three scopes.
The Corridor Scheduled for New Steel
WaterWorld reported approximately $81 million to replace and monitor aging water infrastructure along 14 Mile Road after four major breaks in the corridor over seven years. Phase one is scheduled to begin in November 2026 and continue through early 2028. It would replace about three miles of 48-inch PCCP with 54-inch steel pipe between Haggerty Road and Farmington Road.
The Urban Collaboratory identifies PCCP failures along 14 Mile Road in 2017 and 2021. That dated pair is not the same tally as WaterWorld's four breaks over seven years. Repeated PCCP failures are still on the road now scheduled for a material change.
An engineering paper describes electromagnetic inspection as a method for assessing PCCP.
The phase now on the calendar answers about three miles of the corridor differently, with new steel and a larger diameter. Monitoring remains part of the $81 million scope, along with the replacement.
Novi's Mile, on a Different Bill
The City of Novi said in a November 13, 2025, update that GLWA and member communities developed a three-phase plan, at a projected $12.8 million, to replace or renew about one mile of a transmission main. The plan followed inspection of nearly four miles. Most of the inspected length, on those figures, was not put on the immediate renewal list.
Novi said the carbon-fiber renewal is expected to extend the pipe's life by approximately 50 years. That expectation belongs to this plan. A liner with a 50-year extension and a steel replacement running into 2028 are both renewal. They are not the same bet, and they are not priced as if they were.
Phase one on 14 Mile Road is the work with a start date: November 2026 through early 2028, about three miles of 54-inch steel, monitoring included, approximately $81 million. Novi's piece is about a mile, a projected $12.8 million, and a carbon-fiber life extension of roughly 50 years. The next visible miles are these, while the 2021 program still calls for more than 100 miles of drinking-water transmission main to be assessed and rehabilitated.
