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Package 1

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.

Drainage tunnel graphic showing the tunnel location on a map and an infographic of how the tunnel works. Click to enlarge drainage tunnel infographic.

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.
A map showing the locations of the advanced bridges and construction as part of the I-94 Package 1 project from Burns to Barrett avenues. Click to enlarge I-94 Package 1 project map.