A veterinarian, her husband and their one-year-old son were killed in a fiery crash in Ohio after a semi-truck slammed into their car while sitting in traffic on the highway.

Lynnea Soposki, 36, her husband Luke, 37, and their one-year-old baby Logan died on Saturday in a nine-car crash while headed northbound on I-71 in Delaware County around 6.30pm.

Modou F. Ngom, 50, was behind the wheel of a 2006 Freightliner tractor-trailer when he allegedly failed to come to a stop, plowing into several vehicles. He subsequently killed the family at the scene and left three others injured, according to an Ohio Highway Patrol report cited by the Rome Sentinel.

Ngom faces three counts of aggravated vehicular homicide, while additional charges are still pending, authorities said.

The Soposki family was in their 2016 Chevrolet Silverado when they became stuck in traffic. Just four days before the tragedy, a part of the interstate had only one lane operating due to construction, according to the Columbus Dispatch.

The roadwork was a part of a $31million project to make the highway safer, as reported by the New York Post.

Lynnea was a veterinarian at the Muirfield Animal Hospital in Dublin after graduating from The Ohio State University College of Veterinary Medicine in 2016, according to the animal hospital's biography.

Her LinkedIn profile noted that she was a small-animal veterinarian with an interest in both traditional and integrative medicine.

'I enjoy being a friendly face for my clients and work hard to educate my clients and design a collaborative approach to help treat their pet,' she wrote.

'I have a strong interest in rehabilitative medicine and improving mobility of seniors, athletes, and every animal in between.'

The Muirfield Animal Hospital honored the beloved doctor in a touching Facebook post on Monday.

'Dr. Soposki was an extraordinary veterinarian, a compassionate caregiver, and a deeply valued member of our team,' the hospital wrote.

'She brought kindness, dedication, and a genuine love for her patients and their families into every interaction. Many of you had the privilege of knowing her, and we know this loss will be felt not only within our clinic, but throughout our entire community.'

In addition to the tribute a close family friend of the Soposki family set up a GoFundMe has been set up to help cover their funeral costs.   

Outside of the office, the vet enjoyed competing in bodybuilding, where her husband was her biggest fan, according to the couple's personal trainer, Michael Davies.

'Luke is the perfect yin to her yang, you know, her hype man,' Davies, who works as a trainer at Metro Fitness Worthington, where the Soposkis were members for nearly a decade, told NBC4.

'I got to watch all that, and that's a blessing.'

Luke was a market manager for analytical chemistry at Mettler-Toledo International, according to his LinkedIn profile.

The husband also owned his own award-winning beer-brewing company, Blue Quill Brewing Company, according to public records obtained by the Sentinel.

The Soposkis, who were college sweethearts, moved to Ohio together from New York.

Ngom was arraigned on Monday and was given a $500,000 bond as he faces up to five years in prison.

Additionally, the driver may be fined up to $10,000 if convicted.

A preliminary hearing is scheduled for April 21.