A single-vehicle crash on I-95 sent one person to the hospital and caused significant traffic delays in Westport early Sunday morning.

Westport firefighters responded to the northbound side of I-95 just north of Exit 18, where emergency crews found a vehicle involved in a crash.

Four occupants were evaluated and treated at the scene by firefighters, Westport EMS and Connecticut State Police. One person was transported to a hospital for further treatment.

The crash caused significant delays for northbound traffic while crews worked to clear the scene.

Officials are reminding motorists to always wear seat belts and remain alert to changing road conditions.