Sounds like you're getting a bit worked up over nothing. I've never heard of a bridge deck being rejected for too-strong of concrete. Cracking, too weak, segregated mix, sure. . .too strong? no.
I've been noticing a lot of engineers using lower case lettering for their calculation sheets. I never saw this before when working for pivate engineering firms, but now that i work for the government it seems rather common with gov employees. Is this common? Any comments? I personally don't...