Robert Lemieux, 38, of Pelham, New Hampshire, has died following a fatal single-vehicle crash on Interstate 93 in Londonderry.
The collision occurred Friday afternoon, September 18, 2026, near mile marker 12 and resulted in a significant emergency response and temporary lane closures.
Lemieux’s death has left family, friends and others who knew him mourning a sudden loss as authorities continue investigating the circumstances of the crash.
What Happened to Robert Lemieux?
According to information attributed to New Hampshire State Police, the crash happened at approximately 1:50 p.m. Friday on I-93 near mile marker 12.
Lemieux was driving a Buick sedan when the vehicle left the roadway and entered the center median separating the highway.
The sedan continued through the median before striking a concrete bridge support.
Emergency responders attempted life-saving measures at the scene before Lemieux was transported to an area hospital, where he was pronounced deceased.
Fatal I-93 Crash in Londonderry
The collision prompted a response from multiple emergency agencies.
New Hampshire State Police troopers from the Troop B barracks responded to the crash, while the Londonderry Fire Department, Derry Fire Department and New Hampshire Department of Transportation also assisted at the scene.
The left southbound lanes of Interstate 93 were closed for approximately an hour and a half while authorities investigated the collision and crews addressed the scene.
The incident caused a temporary disruption for motorists traveling through the area.
Robert Lemieux Obituary Details
| Detail | Information |
|---|---|
| Full name | Robert Lemieux |
| Age | 38 |
| Hometown | Pelham, New Hampshire |
| Crash location | Interstate 93 near mile marker 12, Londonderry |
| Date of crash | September 18, 2026 |
| Approximate time | 1:50 p.m. |
| Vehicle | Buick sedan |
| Crash type | Single-vehicle collision |
| Fatal outcome | Lemieux died after the crash |
| Cause of crash | Under investigation |
| Funeral arrangements | Not provided |
Investigation Into Robert Lemieux’s Death
New Hampshire State Police said all aspects of the crash remain under investigation.
Authorities have not announced why the Buick sedan left the roadway and entered the median.
Because the investigation remains active, no specific explanation for the collision should be assumed.
Investigators are working to establish the circumstances leading up to the crash and determine the factors involved.
Anyone with information that could assist authorities has been asked to contact Trooper Evan Puopolo of the New Hampshire State Police.
Family and Friends Mourn Robert Lemieux
Robert Lemieux’s death represents a sudden loss for the people who knew him.
At 38, his passing following the I-93 collision has left family members, friends and others in his community facing grief while authorities continue working to understand what happened.
For loved ones, the focus will extend beyond the details of the roadway crash to the memories and relationships they shared with Lemieux.
Those personal memories will remain an important part of how he is remembered.
Remembering a Pelham Resident
Lemieux was identified as a resident of Pelham, New Hampshire.
His death following the September 18 crash has brought attention to the dangers of serious collisions on major highways, but for those closest to him, the incident represents the loss of a person who was part of their lives.
As family and friends mourn, they will continue to remember Robert through the experiences and moments they shared with him.
Funeral Arrangements and Memorial Information
No funeral, visitation, burial or memorial arrangements for Robert Lemieux were included in the available information.
Additional details may be released by his family or an authorized funeral provider.
Until arrangements are announced, any information about services should be confirmed through an appropriate source.
Robert Lemieux Cause of Death
The fatal injuries sustained in the Interstate 93 collision resulted in Lemieux’s death after he was transported to an area hospital.
However, the precise circumstances that led to the crash remain under investigation.
Officials have not publicly established why the Buick left the roadway, and no specific contributing factor should be attributed to the collision without confirmation.
The ongoing investigation may provide additional information about the circumstances surrounding the accident.
Robert Lemieux Remembered
Robert Lemieux’s death has brought an unexpected end to the life of a 38-year-old Pelham resident.
His family, friends and others who knew him are now left to remember him while authorities continue examining the September 18 crash.
The investigation into the I-93 collision remains ongoing, but the loss experienced by his loved ones is already deeply personal.
As they mourn, the memories shared with Robert will remain an enduring part of his legacy.
Disclaimer
This obituary is based on information concerning the September 18, 2026, fatal crash involving Robert Lemieux on Interstate 93 in Londonderry, New Hampshire. The available information identifies Lemieux as a 38-year-old Pelham resident and states that he died after the Buick sedan he was driving left the roadway and struck a concrete bridge support. The cause and contributing circumstances of the crash remain under investigation. No additional cause, medical condition or other circumstance should be attributed to the collision without confirmation from authorities.