Crash closes Interstate 85 northbound lanes in Gwinnett County, disrupting evening commute near Highway 120
What happened on I-85
A crash forced the shutdown of all northbound lanes of Interstate 85 in Gwinnett County during the evening commute, snarling traffic for miles across one of metro Atlanta’s busiest corridors. The incident occurred near the State Route 120 (Duluth Highway) area, a stretch that includes closely spaced entrances and exits serving Duluth and surrounding communities.
Authorities responded to the scene while the crash was investigated. The closure was later lifted and the northbound lanes reopened.
Location, timing and traffic impacts
The crash was reported in the I-85 northbound lanes near SR 120 and Boggs Road, with the interstate closing in the middle of rush hour. Traffic congestion extended back toward the Interstate 285 interchange, a common choke point where delays can cascade across regional routes and surface streets.
As responders worked the scene, drivers were directed to use alternate routes, including parallel surface roads such as Satellite Boulevard, to bypass the closure and reach destinations in Duluth, Lawrenceville and points north.
What is known about injuries and the investigation
Public officials did not immediately release detailed information about what led to the crash, and no confirmed injury count was provided in the initial reports. Law enforcement personnel and state troopers were present during the investigation, which is standard for major incidents that require documenting evidence, interviewing witnesses and restoring safe traffic flow.
How closures unfold on major interstates
Full interstate shutdowns are less common than partial lane closures, but they can be necessary when investigators need to preserve a scene, when debris spans multiple lanes, or when emergency vehicles require broad access to treat patients and remove damaged vehicles. In the I-85 corridor, even short-duration blockages can produce significant delays because of heavy commuter volumes and limited diversion capacity at nearby exits.
What drivers can do during future incidents
If traffic stops abruptly, increase following distance and avoid sudden lane changes near interchange ramps.
When a full closure is reported ahead, consider exiting early to use parallel arterials rather than waiting for the next available ramp.
Allow extra time during peak travel windows on I-85, especially near I-285 and the SR 120 interchange area where congestion builds quickly.
When major crashes lead to full-lane closures, reopening typically occurs in stages as vehicles are removed, debris is cleared and investigators complete on-scene documentation.
The incident underscores how quickly a single crash can disrupt movement across northeast metro Atlanta and why coordinated emergency response and traffic management are critical during peak commuting hours.