Drivers traveling through Cornelius will see a new traffic pattern beginning Thursday night as construction continues on a $14.6 million North Carolina Department of Transportation (NCDOT) project designed to reduce congestion near Interstate 77 Exit 28.
The traffic shift is part of a long-term improvement project that includes two roundabouts at the intersection of Catawba Avenue and U.S. 21. Officials say the changes are intended to improve traffic flow and enhance safety in one of the area’s busiest corridors.
Traffic
According to NCDOT, Caton Construction Group Inc. of Charlottesville, Virginia, will begin shifting traffic after 9 p.m. on Thursday, July 23.
Drivers will be directed into a newly completed roundabout located on U.S. 21 south of Catawba Avenue while construction continues on a second roundabout north of the intersection.
The second roundabout is expected to open later this fall.
Project
NCDOT awarded the $14.6 million contract in 2023.
The overall project is scheduled for completion by winter 2027.
Officials say the improvements are designed to address recurring traffic congestion near Interstate 77 Exit 28, where backups frequently affect travel through the Catawba Avenue interchange.
Congestion
According to NCDOT, the area experiences consistently high traffic volumes.
“The roundabouts are being built in an area that experiences routine congestion and high traffic volume,” the department said in a news release.
“With Interstate 77 located just west of the intersection, traffic frequently backs up to the Catawba Avenue interchange, compounding travel conditions.”
Transportation officials expect the redesigned intersection to improve traffic movement while reducing delays.
Changes
Once the project is complete, traditional left turns at the intersection will be eliminated.
Instead, drivers who want to turn left from Catawba Avenue onto U.S. 21 will:
- Turn right onto U.S. 21
- Enter one of the roundabouts
- Make a U-turn
- Continue straight through the intersection
NCDOT says this design reduces conflict points between vehicles and helps improve overall traffic flow.
Benefits
According to the department, the roundabouts are expected to provide both safety and operational improvements.
Officials stated that the redesigned intersection will reduce congestion while improving conditions for drivers, pedestrians, and bicyclists.
To help motorists prepare, NCDOT has released an instructional video explaining how to safely navigate roundabouts and highlighting their traffic safety benefits.
Timeline
| Project Milestone | Status |
|---|---|
| Contract Awarded | 2023 |
| First Traffic Shift | July 23 after 9 p.m. |
| South Roundabout Opens | July 23 |
| North Roundabout Expected | Fall 2026 |
| Project Completion | Winter 2027 |
The traffic shift marks another step in Cornelius’ long-term effort to improve one of the region’s busiest intersections. As construction continues through 2027, NCDOT advises motorists to use caution, follow posted traffic signs, and allow extra travel time while crews complete the remaining phases of the project.
FAQs
When will the traffic shift begin?
After 9 p.m. on Thursday, July 23.
How much does the project cost?
The project is valued at $14.6 million.
Why are roundabouts being built?
To reduce congestion and improve safety.
When will the project be completed?
Construction is expected to finish by winter 2027.
Will left turns still be allowed?
No. Drivers will use the roundabouts instead.
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