96-Inch Water Transmission Main Relocation Project
View all work area and detour maps below:
1 – MACOMB ORCHARD TRAIL SITE CLEARING – Dequindre Road to 24 Mile Road, Shelby Township, Macomb County – Trail Detour 1 Map
1 – MACOMB ORCHARD TRAIL – 96-INCH WATER TRANSMISSION MAIN INSTALLATION, TRAIL RECONSTRUCTION – Dequindre Road to south of 24 Mile Road, Shelby Township, Macomb County – Trail Detour 1 Map
2 – TEMPORARY BOOSTER PUMP STATION – South side of M-59 east of Gratiot Avenue, Clinton Twp/Harrison Two, Macomb County
3 – DORSEY-DICKENSON VALVE REHAB/SITE IMPROVEMENTS – North of 32 Mile, west of M-53, Village of Romeo, Macomb County
4 – 24 MILE VALVE – 96-INCH WATER TRANSMISSION MAIN – South side of 24 Mile west of Macomb Orchard Trail, Shelby Township, Macomb County – Trail Detour 2 Map
5 – NSC VALVE – 96-INCH WATER TRANSMISSION MAIN – South side of South Boulevard, west of Dequindre Road, City of Troy, Oakland County
6 – PLUMBROOK DRAIN DISCHARGE FACILITY – South side of South Boulevard/Dobry Road east and west of Dequindre Road, City of Troy, Oakland County, City of Sterling Heights, Macomb County
7 – SOUTH BOULEVARD – 96-INCH WATER TRANSMISSION MAIN CROSSING, ROADWAY RECONSTRUCTION – South Boulevard, west of Dequindre Road, City of Troy, Oakland County, Rochester Hills, Oakland County – Detour TBD
8 – 24 MILE ROAD – 96-INCH WATER TRANSMISSION MAIN CONNECTION, TRAIL RECONSTRUCTION, ROADWAY RECONSTRUCTION – 24 Mile Road at the Macomb Orchard Trail, Shelby Township, Macomb County – 24 Mile Detour, Trail Detour 3
9 – HAMLIN ROAD – 96-INCH WATER TRANSMISSION MAIN CONNECTION, ROADWAY RECONSTRUCTION – Intersection of Hamlin Road and Dequindre Road, Shelby Township, Macomb County, Rochester Hills, Oakland County – Dequindre Detour, Hamlin Detour
10 – SOUTH BOULEVARD – 96-INCH WATER TRANSMISSION MAIN CONNECTION – North side of South Boulevard, west of Dequindre Road, Rochester Hills
Detour Maps
Download the detour maps for each work area in Phase 3
The Great Lakes Water Authority (GLWA) operates 816 miles of water transmission main that serves 112 communities in SE Michigan.
A 32 mile, 96-inch water transmission main in the system running north from Oakland County to Lapeer County is the focus of this project. The project involves installing a water transmission main segment along a new route and decommissioning approximately 2.5 miles of the existing water transmission main.
The objectives of this project are to increase reliability of the 96-inch water main that serves multiple communities and over 1 million people, improve access for operation and maintenance, relocate the water main outside of businesses and backyards, coordinate with other area infrastructure projects, and to improve traffic flow and pedestrian safety by making improvements at critical intersections.
Media Resources
For more details on the GLWA and RCOC projects, call 877-237-7311.
Frequently Asked Questions
The Great Lakes Water Authority (GLWA) is responsible for this GLWA capital improvement project.
GLWA retained the following engineering and construction firms for design, construction, and Owner’s Agent for the project.
- Phase 1 – Avon Road Improvements: Jacobs Consultants, Inc. (Design) and Kiewit Infrastructure Co. (Construction)
- Phase 2 – Dequindre Road: Jacobs Consultants, Inc. (Design) and Ric-Man/Clark, a Joint Venture (Construction)
- Phase 3 – Macomb Orchard Trail and Implementation: Jacobs Consultants, Inc. (Owner’s Agent) and Ric-Man/Clark, a Joint Venture (Design/Construction)
Please email 96inchWaterMain@glwater.org with questions or concerns.
The main objectives of this GLWA project include:
- Relocating the 96-inch water transmission main outside of the limits of private properties between 24 Mile Road and Hamlin Road. This will be accomplished by constructing a relocated 96-inch water transmission main that is approximately 2.5 miles long.
- Improving the operations and maintenance of the 96-inch diameter water transmission main located in Macomb County, Oakland County, and Lapeer County.
- Constructing two (2) new isolation valves on the 96-inch water transmission main to improve isolation capabilities for future operations and maintenance. The new isolation valves will allow GLWA to maintain water services from the 96-inch water transmission main while performing future system operations and maintenance.
- Continuing to provide essential, uninterrupted water services throughout construction utilizing temporary facilities.
Construction of the GLWA water transmission main is divided into three phases:
- Phase 1 – Avon Road Improvements: East Avon Road between the intersection of Dequindre Road and Avon Road and the intersection of Dequindre Road and 23 Mile Road (COMPLETED)
- Phase 2 – Dequindre Road: In two segments:
- South Dequindre Road, between Avon Road and Hamlin Road (COMPLETED)
- North Dequindre Road, between Macomb Orchard Trail and 23 Mile Road (COMPLETED)
- Phase 3 – Macomb Orchard Trail and Implementation: Macomb Orchard Trail and 24 Mile Road and several remote sites (as described in overview map and table above (2026-2028)
See response above. Updates to the construction schedule will be posted on the project webpage.
GLWA continues to coordinate with member partner communities, Macomb County, Oakland County, Lapeer County, utility providers, regulatory agencies, and local businesses, and residents to minimize planned disruptions. Stakeholders continue to be notified in advance of construction. GLWA and the Road Commission for Oakland County (RCOC) closely coordinated the Phase 1 and Phase 2 Construction. GLWA’s 96-inch water transmission main and roadway enhancements included in Phase 1 and Phase 2 are complete.
GLWA is coordinating with all impacted communities served by the 96-inch water transmission main to maintain uninterrupted water services during construction.
GLWA is committed to coordinating with other major infrastructure projects to lessen temporary traffic impacts and to implement permanent roadway and pedestrian enhancements to the areas within the communities that are affected by construction.
GLWA is working closely to coordinate with the Macomb County Department of Roads and the Road Commission for Oakland County on the design of several roadway improvements as part of this project, including:
- Roadway widening of East Avon Road by adding a center turn lane (COMPLETE)
- A new roundabout at the intersection of 23 Mile Road and Dequindre Road with related pedestrian crossing safety improvements (COMPLETE)
- Intersection improvements at Dequindre Road and School Road by adding a designated center turn lane
- Roadway reconstruction to current standards along Dequindre Road between East Avon Road and Hamlin Road
- Roadway widening of Dequindre Road between 23 Mile Road and the Macomb Orchard Trail by adding a designated center turn lane
Temporary access roads for local traffic only will be continuously provided during construction. Direct front access will be provided to local residents, businesses, and institutions during construction.
- Trees will be removed and replaced within the limits of work along the Macomb Orchard Trail between Dequindre Road and 24 Mile Road starting in December of 2025. A tree survey was performed to catalog tree species, size, and condition.
- The Macomb Orchard Trail will be temporarily closed between Dequindre Road and 24 Mile Road for Phase 3 construction and subsequent trail restoration in the trail corridor.
- Trail traffic will be temporarily rerouted using existing sidewalks along 24 Mile Road, 25 Mile Road, and Dequindre Road.
- The paved portion of the Macomb Orchard Trail will be removed and replaced as part of the 96-inch water transmission main construction restoration.
- A 30-feet-wide “tree free zone” is planned above the new, relocated 96-inch water transmission main. Outside of this “tree free zone”, trees that are removed for construction will be replaced at approximately a 1:1 ratio.
- Trail landscaping and hardscaping enhancements are planned for the Macomb Orchard Trail restoration between Dequindre Road and 24 Mile Road.
There are no planned disruptions to GLWA transmission system water services and fire-fighting supply during project construction. Rerouted water supply paths will be utilized during construction to avoid disruptions to water services. Hydraulic computer modeling and field testing are being conducted in advance of Phase 3 construction to confirm that planned changes in water supply paths do not materially affect water services and water quality.
This project will improve GLWA’s ability to perform operations and maintenance of the 96-inch water transmission main, valves, and outlets.
Register For Updates
96-Inch Water Transmission Main Relocation Project Registration Updates