Replacement Pipe On Site for 15 Mile Sewer Repair
Nearly 4,000 feet of fiberglass-chemical polymer pipe – 9 feet, 2 inches in diameter – has begun to arrive in Fraser to repair the collapsed sewer interceptor along 15 Mile Road. The $2.5 million worth of pipe will both repair the collapsed section of pipe and line an adjacent 3,700 feet of sewer deemed as being at imminent danger of collapse.
“The arrival of this pipe marks another milestone in this massive project. I am very pleased to report that this project remains on schedule and on budget,” said Macomb County Public Works Commissioner Candice S. Miller. “All of the contractors, the government agencies, the neighbors – everyone involved in this project – have worked together as a team to get us to this point.”
The new pipe was manufactured by the Hobas company, which is based in Texas. It is in the process of being shipped to the work site in 20-foot segments, known as “sticks.” It will begin to be installed in early August. Final completion of the sewer line repair is expected to be completed by the end of September, with the re-opening of 15 Mile Road expected by the end of the year. The repair became necessary after the 11-foot diameter pipe under 15 Mile Road collapsed on Christmas Eve 2016, causing a sinkhole to develop.
The sewer line is owned by the Macomb Interceptor Drain Drainage District and managed by the county Public Works Office.
The pipe was purchased at 2014 prices, leveraging a previous purchase of similar pipe for the Oakland-Macomb Interceptor as part of a maintenance project.
With the purchase of the pipe, Miller noted that all the major components of the project were made in America – steel from Indiana and pipe from Texas. All of the major contractors on the project are based in the Detroit region, with the largest contractor, Dan’s Excavating, and the lead engineering firm, Anderson, Eckstein & Westrick, both based in Shelby Township.
“Here in Macomb County, we appreciate the value of the words ‘Made in America.’ American-made products, installed with local expertise, ensures we won’t be standing out here in another sinkhole again on 15 Mile Road,” she said.
Some details about the work.
- 20 foot increments, 9-foot, 2-inches in diameter, weighs about 7 tons per 20-foot “stick”
- Nearly 4,000 feet in all to be installed – 3,700 feet to line the pipe east of the collapse and about 280 feet for the collapsed portion of the interceptor
- Will be installed from east to west
- Manufactured in Texas
- 300 feet long by 28 feet wide
- Will be 60 feet deep when complete
- Every 12 feet of depth, the shaft is reinforced with steel beams to prevent collapse.
- The entire shaft is surrounded by a “cage” of 300 cement & steel circular piers that are 3 feet wide and 70 feet deep
- As of July 6, the shaft is 49 feet deep on the east end and 40 feet on the west.
- Shaft work is to wrap up in late July.
- Pipe installation to begin about August 1 and take about 20 days
- Pipe installation scheduled to operate 24 hours / 7 days until complete
- Sewage expected to begin flowing through new pipe about Sept. 1
- Shaft filled by late September
- 15 Mile Road drivable by the end of the year.
- Some property restoration work may wait until early 2018, weather dependent
- Total cost of project: $75 million
- Financed by municipal bond sold by the Macomb Interceptor Drain Drainage District: $70 million
- Financed by state grant or low-interest loan: $5 million