We check this website, now trt1.jus.br is up and dont blocked for our system and other users of the Internet.
So, answer to question: Is trt1 Down Right Now? - NO! trt1 is up!
If you have problem with access to site trt1, and domain trt1.jus.br is not avalible.
Clear browser cache and/or try other web browser
(Chrome, Firefox or Safari).