Wooden bridge - openlock 1x4

Hi there, this is an effort to build a wooden bridge to use with openlock system, need to test the "printability" (with support of course) and this will be done soon (if someone want to test, please, send a photo or mail the result!).
This could be used for little bridge on any creek, little river, chasm etc...
i try to fill it with the feeling of "not secure to pass over it..." that many time players have when i descrive a damn tricking bridge...

this is a remix of the 1x1 tile of nowall standard dungeon done by TheRooster.

any suggestion to improve it (or improve the printability) is welcomed!

edit: sorry i publish the wrong stl (the one with the 4x2 tiles on back to see the dimension :D) now it's ok.