Minnesota Department of Transportation

511 Travel Info

Diverging Diamond Interchange

Improving interchange safety

Diverging diamond
Diverging diamond interchanges improve traffic safety and mobility

MnDOT is constructing diverging diamond interchanges throughout the state. These interchanges:

  • Reduce overall traffic delays up to 60 percent
  • Are safer because they eliminate conflict points that put vehicles in each other's path
  • Provide better traffic operations and can handle additional capacity 20 years after construction

Read more about other alternative intersection designs.

Recent DDI projects

  • I-35W and Hwy 97 in Forest Lake
  • Hwy 169 and Hwy 41 in Jordan
  • I-494 and 34th Ave. in Bloomington
  • Hwy 101 and Hennepin Co. Rd 144 in Rogers
  • County Rd 96 over I-35W in Arden Hills
  • Elk Run Olmsted County
  • Hwy 15 and Stearns Co. Rd 120 in St. Cloud

Navigating a DDI

Traffic crisscrosses at either end of the bridge, so instead of making hard left turns, drivers veer to the left for access. Pedestrians cross to the middle of the bridge and walk in the middle between the eastbound and westbound lanes with protective barriers on either side.