Rule 9.2.10:  No part of the bridge shall extend above the decking support surfaces at any transverse section along the length of the bridge.

Anticipated Error:  As this is a new rule this year, it is possible that it might be overlooked in some designs.  The rules in 2009 force ALL of the structure to be below the top of the decking support.  Compliance can be verified by running a long board laid transverse to the center line all the way down the bridge.