The crash happened around 10:30 a.m. near state Route 725 after Maxson, driving a 2015 Ford F-Super Duty pickup truck, rear-ended an Ohio Department of Transportation truck, the patrol said.
A third person in the pickup, 83-year-old Mary B. Maxson of Nicholasville, was taken to Miami Valley Hospital with serious injuries.
ODOT employee Jessica A. Brown, 55, of Dayton, who was driving the ODOT truck, was taken to Miami Valley Hospital with injuries that were not life-threatening. There have been 127 crashes this year involving ODOT crews, the department said.
Two dogs in the pickup truck were taken to the Montgomery County Animal Resource Center.
The patrol said all four people were wearing seat belts during the crash, which temporarily shut down the northbound lanes.
The victims’ family has been notified, and the crash remains under investigation.