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Package 1
Drainage tunnel project
Schedule
2026-2028
Location
Detroit
Benefits
- Reduces freeway and service drive storm water discharged to the combined sanitary and storm water systems by 82 percent.
- During heavy rain events, the storm water flows from the freeway and service drives basins directly into drop shafts and then into the tunnel.
- Large capacity tunnels will store up to 8 million of gallons of water allowing municipal systems to drain first into treatment facilities before storm water from the tunnel is discharged.
- Prevents local systems from being overburdened and flooding neighborhoods.
Learn more about drainage tunnels.
Road and bridge project
Schedule
2028-2031
Location
Detroit
Benefits
- Improve safety and traffic operations by the addition of the auxiliary lanes between the Connor and Gratiot interchanges.
- Rebuilding service drives and converting to two-way traffic.
- Operational safety improvements by extending entrance and exit ramps.
- Modernizing interchanges at Conner Avenue and Gratiot Avenue.
- Replacing 8 overpasses above I-94.