I think the cut score is developed from the combination of morning and afternoon. Thus every discipline within Civil will have a different one. Also, highly doubt it will deviate THAT much from the normal 70%.I agree with @Chris C.
The AM went smoothly. I found the PM Transportation Exam to be heavy on traffic and conceptual based. I can only hope. This was my first time taking the exam, but I can say it was NOTHING like the PE Practice Exams put out by NCEES or anyone else!