The sinkhole had eastbound Route 30 Bypass closed at Route 100 in Exton.
Road crews just filled in the very same sinkhole on Monday, but it opened back up again Tuesday morning.
It turns out the problem was a cracked drainage pipe about six feet beneath the roadway.
One lane got by the scene on the eastbound side during the morning rush, but by 9:15 both eastbound lanes were closed so road crews could excavate, repair the pipe, and patch up the hole.
At first, PennDOT wasn't sure if the project would wrap up before the evening commute, but the entire eastbound Route 30 Bypass in Exton was, in fact, reopened right around 4:45 p.m.