Here, like most herbaceous perrenials, trumpet creeper dies back to the ground every winter. I am in Missouri and it is too early to know what will or will not resprout.
Trumpet creeper usually is very hardy and aggressive.
wait a while and see if it wont come back.

Here in PA (Zone 5 and 6) Trumpet Creepers often die back to the ground during the first few winters. Eventually they get large or strong enough to produce wood that survives above ground, and they seem to grow as woody vines thereafter. The ones I have grown didn't flower much intil they were old or large enough (not sure if its age or size that makes the difference) to survive above ground. This takes 3 or 4 years around here, in my experience.