Is that a broken bridge in the water? If so maybe you should put a stump of the bridge on the land using columns and the three prongs on flag stands for rhebar
Wow nice remake, try using something else for a shipwreck so people know its a shipwreck and not something else as Waterfall here thought it was another bridge.
I feel this is missing some of the more important features of Helms Deep, such as the curving tower where the main gate comes through, or the grated waterway that is blown open during the fight.