Drivers are advised to take alternate routes to avoid delays.
Fairview High School students were there Thursday, planning ahead for Friday's 7 p.m. graduation.
"Our teachers told us that if it took us 30 minutes to get here today, that we would need to add that times two because of the Fairview traffic and the Franklin traffic, because of everybody getting here and the families," graduate Katelynn Kelly told News 2.
There will be even more congestion since it will be Memorial Day weekend.
Tennessee Department of Transportation officials said the holiday is expected to draw more than a half a million people to the roads in Tennessee.
Drivers in the Peytonsville Road area need to be aware that there are about a half dozen graduations at the Ag Expo Center from Thursday until next Wednesday.
TDOT is hoping to provide somerelief by suspending all construction-related lane closures on interstates and state routes starting at Noon Friday until Tuesday morning.