New diverging diamond' traffic pattern will be implemented
CHARLOTTE -Construction on one of North Carolina's first diverging diamond interchanges (DDI) is progressing on Catawba Avenue over I-77 in Cornelius. The $5.4 million project will improve traffic flow and reduce congestion and crashes when traffic backs up on the ramps.
Beginning at midnight Friday, June 20, crews will close Catawba Avenue in both directions until 8 a.m. Sunday, June 22. Motorists approaching east or west of I-77 will be limited to right turns and will not be able to cross over I-77:
West of I-77: Traffic will be detoured to I-77 South to N.C. 73 (Exit 25). Motorists can turn left at the exit ramp, cross the bridge and turn left to I-77 North;
East of I-77: Traffic will be detoured to I-77 North to Griffith Street (Exit 30). Motorists can turn left at the exit ramp, cross the bridge and turn left to I-77 South.
All traffic exiting I-77 North or South at Catawba Avenue will be restricted to right turns.
When the road is opened June 22, the new pattern will allow traffic moving in both directions to temporarily cross the left side of the road. The design also improves safety by allowing free flowing turns when exiting or entering the interstate. This video shows how to drive through the interchange.
Construction on the DDI is scheduled to be completed November 1, 2014.