For Immediate Release
October 21, 2013
ODOT Gem of a Project Opens Early
First ever Diverging Diamond Interchange at I-270 and Roberts Road
COLUMBUS – (NEW) Opening five days ahead of schedule, Ohio’s first ever diverging diamond interchange at Interstate 270 and Roberts Road on the west side will be open to traffic right after this evening rush hour.
As its technical name suggests, the interchange is shaped like a diamond. It is designed to  reduce congestion and improve traffic flow by:
·         Switching traffic to the opposite sides of the road as it passes over the freeway; and
·         Constructing entrance ramps to I-270 that are free-flow turns
“To save time and improve efficiency, ODOT engineers closed the Roberts Road Bridge completely in just under 90 days,” said Ferzan M. Ahmed, District 6 Deputy Director. “That complete closure cut construction time in half for this project and opened it to motorists that much sooner.”
Driving through diverging diamond interchanges is easy if you read the signs and follow the striping and traffic signals. Traffic briefly crosses over to the opposite side of the road at signalized crossovers. When vehicles are on the same side of the road as the freeway entrance ramps, they don’t have to wait in separate turn lanes.
ODOT created this rendering to help motorists travel safely through this new interchange.
This is the first DDI in the state of Ohio. ODOT invested just under $10 million to build this new interchange at Roberts Rd. and I-270.
For up-to-date traffic information, construction information and road conditions, 24-hours a day, visit