Yep, at least 3 of them:
1. create new texture for vanila Crysis ladders
2. Add brush-planks from Crysis libraries manually (look at the prefabs library - planks windows supports from village houses or brushes library - planks woodlog supports). And add them manually to the missing rungs places. (lol one)
3. create new ladder in 3d max, using my tut here:
And do not forget to use search function. Its very powerful!