Derry, NH (March 10, 2026) – A rollover crash on Monday afternoon, March 9, caused traffic delays and left at least one person seriously injured on Interstate 93 in Derry.
Emergency units responded to the southbound lanes of Interstate 93 near Exit 4 at approximately 2:10 p.m. after reports of a vehicle rollover. Details about how the crash occurred were not immediately released.
The incident forced the closure of the right lanes of the highway while responders worked at the scene. The lane closures caused southbound traffic to slow and back up in the area during the afternoon.
By about 5:45 p.m., crews had cleared the scene, and traffic resumed normal flow along the highway.
Authorities continue to investigate the cause of the crash, and more details will be released as soon as they become available.
Our thoughts are with those affected as they continue to recover.
How Rollover Accidents Affect Highway Traffic Flow
Main travel routes near Interstate 93 and Exit 4 can see delays after collisions. Injury accident scenes in Derry may involve lane restrictions while responders secure the roadway and assist those involved.
Rollover crashes often happen when a vehicle loses stability due to sudden steering, high speeds, or contact with another vehicle. When a vehicle overturns, it can block lanes and create additional hazards for drivers approaching the area.
Highways are designed to move large volumes of traffic, so even a single blocked lane can quickly cause backups. As responders manage the scene and remove damaged vehicles, traffic may be slowed or redirected until the roadway is cleared and safe for travel.
