Is my Arduino UNO fried?
It's hard to tell without further testing. Do the following:


Remove the Uno from the faulty circuit, making sure you remove all the wiring from the Arduino board.
Plug the Uno into the USB port. Does the ON LED light up? Does the built-in LED on D13 blink three times? (this should happen if you had the optiboot bootloader)
Remove the USB cable and plug the Uno to a 9V source through the barrel power connector. Do the same test above.
Can you upload the Blink sketch? If you can, does it make D13 LED blink once a second?


Report your findings by updating your question.