Minnesota Department of Transportation

511 Travel Info

Diverging Diamond Interchange


Improving interchange safety

Diverging diamond interchanges improve traffic safety and mobility
Diverging diamond

MnDOT is constructing Diverging Diamond Interchanges throughout the state. These interchanges:

  • Cut overall traffic delays up to 60 percent
  • Improve safety by eliminating standard intersection geometrics and conflict points
  • Provide better traffic operations and show some excess capacity 20 years into the future

Read more about other alternative intersection designs.

Recent DDI projects

  • County Rd 96 over I-35W in Arden Hills
  • Elk Run

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.