16+ hour shift....

Hello all! This is my first post. This is only my 2nd travel assignment; I need advice to see if this is normal. At my hospital in California call in the operating room is mandatory, which is fine but they schedule my call after my 8 hour shift so I end up working 16+ hours. My shift in the operating room is from 2:45pm-11:15pm (30 minute lunch break). I was on call after that from 11:00pm-7:00am that night. Unfortunately, 2 traumas came in and I was working non-stop from 11pm-7am. Since the OR is not staffed at night and only has the one call team there was no one to give the tech and I a break. I am probably very naive, but is this normal for traveling? It seems unsafe to work that long without a break. I know I shouldn't complain about my job with this economy but I guess it was a really long night and I am very frustrated. Any advice is always appreciated!