A state Department of Transportation employee was injured in a crash while working on Interstate 91 North in North Haven on Wednesday.
State police said a driver went into the right shoulder near exit 9, hit a DOT truck that was following a sweeping operation and the employee who was in that truck is being treated for injuries.
Fire officials said the DOT truck was rear-ended around 12:44 p.m., two people were injured and crews extracted people who were in the vehicles.
State Police are investigating.
Get top local stories in Connecticut delivered to you every morning. Sign up for NBC Connecticut's News Headlines newsletter.